Toa Electric Co., Ltd.

Model D-5.5, D-5.5E

ELECTRONIC MUSIC MIXEROperating Instruction Manual

KOBE, JAPAN

Contents

General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3·4

Front Panel: Names of components & their usage (D-5.5) . . . . . . . 5~9

Rear Panel: Names of components & their usage (D-5.5) . . . . . 10~12

Front Panel: Names of components & their usage (D-5.5E) . . . . . . 13

Rear Panel: Names of components & their usage (D-5.5E) . . . . . . . 14

Block and Level Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15·16

Specifications (D-5.5, D-5.5E) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

Rack Mounting Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Procedure for changing internal switch setting . . . . . . . . . . . . . . . . 19

Characteristics Diagam . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Appearance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Precautions

1. Power SupplyThe D-5.5 and the D-5.5E are designed to operate on local AC (50/60Hz) Mains,±10%.

2. XLR Type Audio ConnectorThe connectors are wired as follows.The pin 1 is ground (shield), the pin 2 cold (low, minus), the pin 3 hot (high,plus).

3. Phantom Power SupplyThe phantom power switch on each input channel permits the user to supply 48VDC through the input connectors to a condenser microphone. If phantom power isnot required, the switch must be in the "off" position.

4. Description of components and function on the D-5.5, D-5.5EVarious descriptions are applied, depending on each manufacture. In ourOperating and Instruction Manual explanation of components and functions ismade according to our usage for them.

— 1 —

General Description

The TOA D-5.5 is a 19" rackmount or console configuration, eight-input stereo mixer especially designedfor electronic music and sound. It is expandable to a 32-input mixing system, with group, stereo andmono outputs, and 16 MIDI-THRU jacks, when combined with two D-5.5E 12-input expansion units.The D-5.5 was designed to perform many different applications in broadcast, live sound reinforcement,and recording environments.

The D-5.5 provides four Group outputs, and mixing busses for Aux 1, Aux 2, Effects, Reverb, and Cue.System features include: Sum output selectable pre- or post-fader (St. L + R); two Aux sends, selectablepre-EQ/fader, post-EQ/pre-fader, or post-EQ/fader; Aux returns to Groups 1~4 and Stereo L, R, with pan,level and crossfade controls; an effects patching loop and an internal spring reverb effect are returnableto the 4 groups, stereo L, R, and Aux 1 & 2, with pan, level, and crossfade controls; dual bargraph meters,selectable to Sum/Cue or Stereo L/R; a Headphone output with level control, a Cue buss output withlevel control, and a Cue buss input.

Each input channel features a writing block to identify the source; tape/source selection switch; cueswitch; 60 mm fader; pad and trim controls; two-color LED to indicate signal prescence (green), orclipping (red); channel on/off switch with orange LED indicator; 3-band EQ (high and low shelving-type,and mid peaking-type with frequency sweep control); two Aux sends, selectable pre- or post-EQ; reverbsend to internal spring reverb; effects send; and four group sends via two pan and level controls.

Each of the four Groups features level and crossfade controls for returning Aux and Effects signals to theGroup mixing busses, and a stereo pan for assigning Group signals to the stereo Left and Right mixingbusses. The four groups and Stereo L, R also feature dual-color signal prescence/clip LED indicators; anon/off switch with orange LED; writing block; 60 mm fader; and cue switch.

The D-5.5 rear panel features an RCA tape input, a 1/4" phone jack, and an electronically balanced XLR(with switchable 48-volt phantom powering) for each input channel. Each input also has separate preand post accessory patch points and a direct output. Input channels 7 and 8 are front panel switchable tostereo RIAA inputs, for use with magnetic cartridge turntable.

Group 1~4 output connections are RCA and 1/4" phone jacks; each features separate pre and postaccessory patch points (RCA). Stereo L, R and Sum output connections are individual RCA's, 1/4" phonejacks, and electronically balanced XLR's with ground lift switches. Stereo L, R and Sum outputs alsofeature pre and post accessory patching jacks.

The MIDI jacks are also located on the rear panel. "A" or "B" MIDI inputs are assignable to fourMIDI-THRU outputs (expandable to 16), allowing the use of multiple MIDI instruments without the dataloss or delay that may occur when several instruments are connected serially through their internalMIDI-THRU jacks. Each MIDI-THRU output is provided with a front panel mounted on/off switch.

Also on the rear panel are a Buss-Link connector for connecting D-5.5 Expander units, separate 1/4"phone jacks for stereo L, R Cue buss input and outputs, Aux 1, 2 sends and returns, external Reverb sendand return, and Effects send and return; a push button circuit breaker, chassis ground post, and six-footAC power cord complete the rear panel.

The D-5.5 combines with one D-5.5E for 20-inputs or two D-5.5E's for 32 input channels. Both units canbe mounted in a standard 19" rack, or may be used in a console configuration by removing the rack ears,rotating the rear panel 90 degrees, and attaching the included wooden side panels. The mixers arefinished in an attractive and durable gray enamel, with 3-color control identification markings.

— 2 —

System Features: Each Input Channel Feature:

8 × 4 × 2 × 1 configuration: 8 inputs; 4 sub groups;stereo L & R; mono sum.

Expandable to 32 inputs with two 12 input D-5.5Eexpansion unit.

Rear panel rotates 90 degrees to enable use as consoletype mixer, or as 19" rack mount mixer with theincluded mounting brackets; removable wooden sidepanels.

Selectable 2×4 MIDI Thru function; expandable to2×16.

Stereo RIAA Inputs for turntables with magneticcartridge; selectable from front panel; input channels7 & 8.

2 Aux returns to four groups and Stereo L & R, withlevel and crossfade controls.

Internal spring reverb with dedicated 2-band EQ. Canreturn to four groups, stereo L & R, and Aux 1, 2 withpan, level, and crossfade controls.

Effects patching loop, returnable to four groups,stereo L & R, and Aux 1, 2 with pan, level, andcrossfade controls.

Dual bargraph meters; selectable between Sum/Cueand St L & R.

Sum Output (St L & R); selectable pre or post fader.

2 Aux sends; selectable "pre-EQ and fader," "post-EQ, pre-fader," "post-EQ and fader."

Mono reverb send and mono effects send; both are"post EQ and fader."

Headphones output with level control.

Push button circuit breaker instead of fuse.

Tape/Source Selection switch.

2-color LED indicator for signal presence (green) andclip (red).

Pad and trim controls.

3-band EQ; shelving type for high and low; peakingmid with sweep control.

2 Aux sends; selectable pre or post.

Reverb send to internal spring reverb; post EQ andfader.

Effect send; post EQ and fader.

4 group sends via 2 level and pan controls.

Channel on/off switch with LED indicator (orange).

Writing block.

60 mm fader.

Cue switch.

The D-5.5 is an 8 input, 19" rack mountable mixing console, featuring superioraudio performance, system expandability, and unique "user friendly" design.

Each Group Features:

Level and crossfade controls for returning aux andeffects signals to group busses.

Stereo pan pot to Stereo L & R busses.

2-color LED indicator for signal presence (green) andclip (red).

Channel on/off switch with LED indicator (orange).

Writing block.

60 mm fader.

Cue switch.

Features

— 3 —

Features

Stereo L & R Features: Sum Connections:

2-color LED indicator for signal presence(green) and clip (red).

Channel on/off switch with LED indicator(orange).

Writing block.

60 mm fader.

Cue switch.

REAR PANEL:

Other Connections:

L & R Cue input: 1/4" phone jacks.

L & R Cue Buss output: 1/4" phone jacks.

Aux 1 & 2 sends and Aux 1 & 2 returns: 1/4" phonejacks.

Rev send, and return: 1/4" phone jacks.

Effects send, and return: 1/4" phone jacks.

A and B MIDI Input: DIN plug.

1-4 MIDI Thru: DIN plug.

Buss Link: Multi-pin computer-type connector.

Input Channel Connections:

Separate pre and post accessory patch points: RCA.

Direct Output: RCA.

Source inputs: 1/4" phone jack, and electronicallybalanced XLR with individually switchable 48-voltphantom power.

Tape input: RCA.

RIAA inputs on channels 7 & 8: RCA.

Group 1-4 Connections:

Separate pre and post accessory patch points:RCA.

Direct Output: RCA, 1/4" phone jack.

Stereo L & R Connections:

Separate pre and post accessory patch points: RCA.

Separate pre and post accessory patch points: RCA.

Direct Output: RCA. 1/4" phone jack, and electroni-cally balanced XLR with ground lift switch.

— 4 —

Direct Output: RCA, 1/4" phone jack, and electroni-cally balanced XLR with ground lift switch.

Front Panel (D-5.5)

INPUT CHANNEL(D-5.5)

Phono EQ (RIAA) IN/OUT Switch (RIAA IN/OUT)This switch is available for input channels 7 and 8 only and is active when aturntable with magnetic type cartrige is connected to the Phono input channel.The switch is a "push-in push-out" type. The "out" position provides a flatfrequency response.

Tape/Source Switch (TAPE/SOURCE)This switch is provided for selecting the desired input signals. When monitoringthe signals from the XLR connector, phone jack and phono inputs, the switchshould be set to the "SOURCE" position. When the signal from the "Tape In"input is desired, the switch should be set to the "TAPE" position.

Signal/Peak LED Indicator (SIG/PEAK)The dual color LED indicator lights green when the pre or post EQ signal levelreaches more than -30dB, and turns red when the signal level reaches 3dBbelow clipping, giving a visual reference for optimum setting of the trim control.

Input Level Selector (PAD)The selector provides 30dB attenuation of the sensitivity of the XLR connector,phone jack and phono inputs at the "30" position. The "0" position shows thesensitivity indicated on the panel. The correct setting should be made accordingto the output level of the equipment connected.

Input Trim Control (TRIM)The trim control adjusts the gain of the preamp stage of the associated channel,providing 30dB of gain control. When the trim control is set to the "0" positionwith the input level selector at the "0" position, the nominal levels of theassociated inputs are as follows.a. Mic input: -60dBb. Tape input: -20dBc. Phono input: -50dB (Input channels, 7 and 8 only)The trim control and input level selector of each channel should be properlyadjusted so that the peak LED just begins to turn red from green or only flash redoccasionally. This will ensure lowest distortion level and optimum signal tonoise ratio.

High Equalizer Control (HIGH)The high EQ control alters the high frequency response of the input channel,providing ±10dB at 4kHz, and ±15dB at 20kHz of continuously variable activeshelving equalization. The "0" detented position provides flat audio response.

Mid Equalizer Center Frequency Control (MID FREQ)This control alters the center frequency of the mid EQ control in the range from200Hz to 5kHz.

Mid Equalizer Control (MID LEVEL)This control alters the mid frequency response of the input channel, providing±15dB at the center frequency of peaking equalization. The "0" detentedposition provides flat audio response.

Low Equalizer Control (LOW)The low EQ control provides ±10dB at 150Hz and ±15dB at 20Hz ofcontinuously variable active shelving equalization. The "0" detented positionprovides flat audio response.

AUX 1 Control (AUX 1)This control determines the level of the input signal to be fed to the aux 1 buss.When in the center detent position the control is off, and no signal is assigned.Rotating the control counter-clockwise increases the amount of pre-fader/post-EQ signal assigned to the buss. Rotating the control clockwise increases theamount of post-fader/post -EQ signal.Note: "Pre-fader/post-EQ" can be changed to the pre-EQ signal with an internal

switch. (See page 19 for details.)

— 5 —

The D-5.5 incorporates two, switchable MIDI inputsand four MIDI THRU outputs. With the D-5.5E, sixadditional MIDI THRU outputs are available.

MIDI LED Indicator (MIDI IN)This yellow LED indicates the presence of MIDI dataat the MIDI input jack on the rear panel (MIDI IN).

MIDI Input Selector Switch (MIDI IN, A, B)This switch selects either the MIDI input B signal inthe "push" position, or A signal in the "release"position.

CAUTIONWhile the MIDI LED indicator is flashing, do notoperate either the MIDI input selector switch orthe MIDI THRU on/off switch in order to avoidmalfunction of connected MIDI equipment.

MIDI THRU ON/OFF Switch (MIDI THRU ON/OFF)This switch is for "on" or "off" function of each MIDITHRU output. The MIDI THRU is "on" in the "push"position.

(D-5.5E)

MIDI THRU

(D-5.5)

Group Assign Pan Control 1 and 2 (GROUP PAN)This pan control assigns the amount of signaldetermined by the group assign control to the group1 and 2 busses, providing equal output to the group 1and 2 busses at the center position. Rotating the pancontrol clockwise decreases the amount of signal tobe fed to the group 2 buss, keeping the original levelof the signal for the group 1 buss, while rotating thecontrol counter-clockwise decreases the amount ofsignal to be fed to the group 1 buss, keeping theoriginal level of the signal for the group 2 buss.

Cue Switch (CUE)The cue switch is for monitoring the post-EQ,pre-fader signal in each input channel throughheadphone and cue output. The switch is a "push-onpush-off" type. When more than two switches are"on" the signals are combined.

Group Assign Control 3 and 4 (GROUP LEVEL)This control determines the amount of a given inputsignal assigned to the group 3 and 4 via the groupassign control.

Group Assign Pan control 3 and 4 (GROUP PAN)This pan control assigns the amount of signaldetermined by the group assign control to the group3 and 4 busses, providing equal output to the group 3and 4 busses at the detent center position. Rotatingthe pan control counter-clockwise decreases theamount of the signal to be fed to the group 4 buss,keeping the original level of the signal for the group 3buss, while rotating the pan control clockwisedecreases the amount of the signal to be fed to thegroup 3 buss, keeping the original level of the signalfor the group 4 buss.

Channel Switch ON Indicator (CHANNEL ON)The LED indicator lights orange when the channelon/off switch is "on".

Channel ON/OFF Switch (CHANNEL)This pushbutton connects or disconnects the inputsignal to the mixing busses.

Writing BlockThe name of the input equipment or microphonesetting can be written in with an erasable felt pen orgrease pencil.

Input FaderThe fader provides continuously variable adjustmentof the channel's output to the mixing busses. Thenominal level is at the "0" position, with the faderretaining a l0dB margin.

AUX 2 Control (AUX 2)This control determines the level of the input signalto be fed to the aux 2 buss. When in the center detentposition the control is off, and no signal is assigned.Rotating the control counter-clockwise increases theamount of pre-fader/post-EQ signal assigned to thebuss.Rotating the control clockwise increases the amountof post-fader/post-EQ signal.Note: "Pre-fader/post-EQ" can be changed to pre-EQ

signal with an internal switch. (See page 19 fordetails.)

Reverb Control (REV)This control determines the amount of post-fader/post-EQ signal assigned to the reverb buss from agiven input channel, and thus the level of reberb forthat channel.

Effects Control (EFF)This control determines the amount of post-fader/post-EQ signal assigned to the effect buss from agiven input channel, and thus the level of effects forthat channel.

Group Assign Control 1 and 2 (GROUP LEVEL)This control determines the level of input signalassigned to the group buss 1 and 2 via the groupassign pan control.

Front Panel (D-5.5, D-5.5E)

— 6 —

Front Panel (D-5.5)

OUTPUT CHANNEL

Level Control for Return to Group (RET TO GROUP,LEVEL)This control adjusts the level of signal from the AUX1 return and AUX 2 return, or the EFF return andREV return.

Cross-fate Control to Group (RET TO GROUP,X-FADE)With the return signal select switch set to theREV/EFF position, the EFF and REV return signallevels are equally assigned to the group buss. Whenthe control is in its center, detent position. Rotatingthe control counter-clockwise decreases the signallevel of the EFF return, keeping the original level ofthe REV return signal, while rotating the controlclockwise decreases the signal level of the REVreturn, keeping the original level of the EFF returnsignal.With the return signal select switch set to the aux1/aux 2 position, the aux 1 and aux 2 return signallevels are equally assigned to the group buss whenthe control is in its center, detent position. Rotatingthe control counter-clockwise decreases the signallevel of the aux 2 return signal, keeping the originallevel of the aux 1 return signal, while rotating thecontrol clockwise decreases the signal level of theaux 1 return, keeping the original level of the aux 2return signal.

Return Signal Select Switch (REV/EFF, AUX 1 /AUX 2)This switch selects either the REV/EFF return signalsor the AUX 1 / AUX 2 return signals to feed them tothe group buss.

Pan Pot (PAN)The pan pot control assigns the fader output signal ofeach group channel to the stereo L and R mixingbusses. At the detented center position, the pan potroutes the signal equally to the L and R mixingbusses. Panning from one side to the other graduallyassigns the input signal to either the stereo L or Rmixing busses exclusively.

Signal/Peak LED Indicator (SIG/PEAK)The LED indicator lights in green colour when thegroup output signal reaches more than -30dB, andturns to red when the groups signal reaches -3dBbelow clipping, giving a visual reference for adjust-ment of the group fader. (See NOTE 1)

Group Channel ON indicator (CHANNEL ON)The LED indicator lights orange when the groupchannel ON/OFF switch is "on".

Group Channel ON/OFF Switch (CHANNEL)This pushbutton connects or disconnects the signalto the group output and stereo L/R busses.

— 7 —

NOTE 1:Levels should be adjusted so that the LED only

indicates that the channel is being over drivenand the level should be reduced.

flashes red intermittently. A steady red light

Front Panel (D-5.5)

Writing BlockThe name of the source signal can be written in withan erasable felt pen or grease pencil.

Group Fader (GROUP 1 - 4)The 60mm fader provides continuously variableadjustment of the group level to the stereo L and Rbusses, and the group output connectors.

Cue Switch (CUE)The cue switch is for monitoring the pre-fader signalin each group channel through the headphones andcue out. This function is for independent audition ofthe group mixes.

Level Control for Aux 1 Return to Stereo L and R(AUX/RET, LEVEL)This control adjusts the signal level from the AUX 1return and feeds it to the stereo L and R busses viathe pan control.

Pan Pot (PAN)The pan control assigns the signal from the AUX 1return to the stereo L and R busses.

Cue Switch (CUE)The switch permits monitoring the AUX 1 signalprior to the AUX 1 return level control.

Level Control for Aux 2 Return to Stereo L and R(AUX 2 RET, LEVEL)This control adjusts the signal level from the AUX 2return and feeds it to the stereo L and R busses viapan control.

Pan Pot (PAN)The pan control assigns the signal from the AUX 2return to the stereo L and R busses.

Cue Switch (CUE)The switch permits monitoring the AUX 2 signalprior to the AUX 2 return level control.

Level Control for Reverb Return or Built-in Reverbto Stereo L and R (REVERB RET, LEVEL)The control adjusts the signal level from the reverbor the built-in reverb and feeds it to the stereo L andR busses via the pan control.

Pan Pot (PAN)The pan control assigns the signal from the reverbreturn to the stereo L and R busses.

Cue Switch (CUE)The switch permits monitoring the signal prior to thereverb return level control.

Level Control for Effect Return to Stereo L and R(EFF RET, LEVEL)This control adjusts the signal level from the effectsreturn and feeds it to the stereo L and R busses viathe pan control.

Pan Control (PAN)The pan control assigns the signal from the effectsreturn to the stereo L and R busses.

Cue Switch (CUE)The switch permits monitoring the signal prior to theeffect return level control.

Sum Select Switch (SUM SLECT, PRE/POST)This switch selects either the channel pre-fader orpost-fader signals derived from the stereo L and Rbusses, and sends them to the SUM output. Theswitch provides pre-fader signal in the "push"position, and post-fader signal in the "release"position.

Signal/Peak LED Indicator (SIG/PEAK)The LED indicator lights green when the sum outputsignal reaches more than -30dB, and turns to redwhen the signal level reaches -3dB below clipping,giving a visual reference for adjustment of the SUMchannel fader. (See NOTE 1)

Sum Channel ON Indicator and Channel ON/OFFSwitch (CHANNEL ON)The LED indicator lights orange when the channelon/off switch is "on".

Writing Block

Sum Out Fader (SUM)The fader provides continuously variable adjust-ment of the SUM output.

Cue Switch (CUE)The cue switch permits monitoring the pre Sum-fader signal through the headphone and cue output.

Aux 1 / 2 Send Control (AUX SEND, AUX 1 / AUX 2)The aux 1 and aux 2 send controls govern the overalllevel of signal sent to on-stage monitor amplifiers, oran outboard effect device thought the aux 1 and 2send jacks on the rear panel.

Reverb Send Control (REV/EFF SEND, REV)This control governs the overall level of signal sentto the built-in reverb unit or an outboard effectdevice through the reverb send jack on the rearpanel.

Effect Send Control (REV/EFF SEND, EFF)This control governs the overall level of signal sentto an outboard effects device through the Effect Sendjack on the rear panel.

Internal Reverb Equalizer Control (INT REV EQ,HIGH/LOW)These controls alter the frequency response of thebuilt-in reverb circuitry. The high EQ control pro-vides ±10dB at 4kHz, and ±15dB at 20kHz ofcontinuously variable active shelving equalization.

The low EQ control provides ±10dB at 150Hz and±15dB at 20Hz of continuously variable activeshelving equalization. The "0" detented position ofboth controls provide flat audio response.

— 8 —

Level Control for Effect and Reverb Return to Aux 1(REV/EFF TO AUX, LEVEL AUX 1)This control governs the amount of reverb signal(built-in or outboard) returned through the reverbreturn jack (REV RET), and effect signal returnedthrough the effect return jack (EFF RET) to AUX 1mixing buss. The signals of REV RET and EFF RETare controlled simultaneously.

Cross-fade Control to Aux 1 (REV/EFF TO AUX,X-FADE)When this control is in the center position, the REVRET and EFF RET signals are equally assigned to theAUX 1 mixing buss. Rotating the control counter-clockwise decreases the EFF RET signal level,keeping the original level of the REV RET signal.Rotating the control clockwise decreases the REVRET signal level, keeping the original level of theEFF RET signal.

Level Control for Effect and Reverb Return to Aux 2(REV/EFF TO AUX, LEVEL AUX 2)This control governs the amount of reverb signal(built-in or outboard) returned through the reverbreturn jack (REV RET), and effect signal returnedthrough the effect return jack (EFF RET) to AUX 2mixing buss. The signal of REV RET and EFF RET arecontrolled simultaneously.

Cross-Fade Control to Aux 2 (REV/EFF TO AUX,X-FADE)When the control is in the center position, the REVRET and EFF RET signals are equally assigned to theAUX 2 mixing buss. Rotating the control counter-clockwise decreases the signal level of the EFF RET,keeping the original level of the REV RET signal.Rotating the control clockwise decreases the signallevel of the REV RET, keeping the original level ofthe EFF RET signal.

Cue Out Level Control and Cue ON LED Indicator(CUE OUT, CUE)The cue out level control adjusts both the stereo Land R signals and the Cue in (L, R) signal fed to theCue output on the rear panel (CUE OUT) and permitsstereo monitoring when the cue switch is "off".When the cue switch is "on", the control adjusts thecorresponding cue signal. When two or more of thecue switches are "on", the control adjusts thecorresponding combined cue signals. The cue onLED lights when one of the cue switches is "on".

Headphone Level Control and Jack (PHONES)The phones level control adjusts both the stereo Land R signals and the Cue IN (L, R) signal fed to thephones output and permits stereo monitoring whenthe cue switch is "off". When the cue switch is "on",the control adjusts the corresponding cue signal.When two or more of the cue switches are "on", thecontrol adjusts the corresponding combined cuesignals. The headphone jack will accept any stereoheadphone with 8 ohms impedance, or higher.

Signal/Peak LED Indicator (SIG/PEAK)The LED indicator lights green when the stereo out Lor R signals reach more than -30dB, and turns to redwhen the stereo out L or R signals reach -3dB belowclipping, giving a visual reference of adjustment ofthe stereo L or R faders. (See NOTE 1)

Stereo Channel ON Indicator and Channel ON/OFFSwitch (CHANNEL ON)The LED indicator lights orange when the channelswitch is "on".

Writing Block

Stereo Left and Right Fader (STEREO L, R)The fader provides continuously variable adjust-ment of the stereo L or R output, and the signal levelto the Sum out channel when the sum select switchis set in the "POST" position.

Cue Switch (CUE)The cue switch permits monitoring the pre stereo L,R fader signals through the headphones and cue out.

Power LED indicator and Switch (POWER)The power switch alternately turns AC power to theD-5.5 "on" and "off". The LED indicator lights whenthe switch is "on".

Dual LED Bargraph Meter and Meter Select Switch(METER SELECT, SUM/CUE, L/R)The meter indicates the sum output (left side) andcue output (right side) when the meter select switchis set in the "push" position, and indicates the stereoL output (left side) and stereo R output (right side)when the meter select switch is set in the "release"position.

— 9 —

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10k

ohm

s, a

nd o

utpu

t jac

k im

pe-

danc

e is

1k

ohm

s. T

he A

cces

sory

jack

s al

low

sig

nal p

roce

ssin

g an

def

fect

dev

ices

to

be i

nser

ted

into

the

sign

al p

ath.

The

reg

ular

sig

-na

l pa

th

is

inte

rrup

ted

whe

n a

plug

is

inse

rted

int

o th

e A

cces

-so

ry i

n ja

ck.

AC

Pow

er C

ord

The

pow

er c

ord

is o

f th

e th

ree-

wir

e ty

pe w

ith

prop

er g

roun

ding

faci

litie

s bu

ilt-i

n.

(6ft

.)

Ear

th T

erm

inal

Thi

s te

rmin

al

can

be

used

to

grou

nd o

ther

dev

ices

to t

he D

-5.5

to r

educ

e hu

m a

nd s

hock

haz

ard.

Aux

2 S

end

Jack

(A

UX

2 S

EN

D)

Thi

s 1/

4" p

hone

jac

k ca

n be

use

dei

ther

as

a m

onit

or s

end,

or

inco

njun

ctio

n w

ith

the

Aux

2 R

e-tu

rn j

ack

to c

onne

ct a

n ou

tboa

rdef

fect

s de

vice

(ie

., de

lay

or r

e-ve

rb)

to t

he D

-5.5

. T

he A

ux

2S

end

jack

sho

uld

be c

onne

cted

to

the

inpu

t of

the

eff

ect.

Nom

inal

outp

ut

leve

l is

+

4dB

w

ith

anim

peda

nce

of 1

k oh

ms.

Pus

hbut

ton

Cir

cuit

Bre

aker

(1A

)(P

USH

RE

SET

)T

his

brea

ker

is d

esig

ned

to p

ro-

tect

th

e D

-5.5

in

th

e ev

ent

ofin

tern

al

or

exte

rnal

fa

ult.

Wai

tab

out

two

min

utes

aft

er c

orre

ct-

ing

the

faul

t an

d pu

sh t

he b

utto

nto

re

set

the

syst

em a

nd

rest

ore

prop

er o

pera

tion

.

L &

R C

ue B

uss

Out

put

(CU

E O

UT

L/R

)T

hese

1/4

" ph

one

jack

s pr

ovid

eth

e sa

me

sign

al a

s th

e he

adph

one

outp

ut, a

nd a

re u

sed

for

mon

itor

-in

g th

e si

gnal

s of

the

cue

buss

or

ster

eo L

and

R b

usse

s th

roug

hm

onit

or s

peak

ers.

Thi

s ja

ck h

as a

nom

inal

out

put

leve

l of

+4d

B a

nd a

n im

peda

nce

of 1

k oh

ms.

Aux

1 S

end

Jack

(A

UX

1 S

EN

D)

Thi

s 1/

4" p

hone

jac

k ca

n be

use

dei

ther

as

a m

onit

or s

end,

or

inco

njun

ctio

n w

ith

the

Aux

1 R

e-tu

rn j

ack

to c

onne

ct a

n ou

tboa

rdef

fect

s de

vice

(ie

., de

lay

or r

e-ve

rb)

to t

he D

-5.5

. T

he A

ux

1S

end

jack

sho

uld

be c

onne

cted

to

the

inpu

t of

the

eff

ect.

Nom

inal

outp

ut

leve

l is

+

4dB

w

ith

anim

peda

nce

of 1

k oh

ms.

Sum

Out

put

jack

s(S

UM

OU

TP

UT

)T

he u

nbal

ance

d R

CA

pin

jac

k,1/

4" p

hone

jac

k an

d el

ectr

onic

al-

ly b

alan

ced

XL

R c

onne

ctor

are

wir

ed i

n pa

rall

el.

The

RC

A j

ack

has

a no

min

al

outp

ut

leve

l of

-l0

dB

an

d a

n i

mp

edan

ce o

f 1k

ohm

s, a

nd t

he 1

/4"

phon

e ja

ckha

s a

nom

inal

ou

tput

le

vel

of+

4dB

and

an

impe

danc

e of

1k

ohm

s. T

he X

LR

con

nect

or h

as a

nom

inal

ou

tput

le

vel

of

+4d

Ban

d an

im

peda

nce

of 1

k oh

ms.

All

ja

cks

may

be

us

ed

sim

ul-

tane

ousl

y.

Gro

und

Lif

t Sw

itch

(G

ND

)T

hese

sw

itch

are

ass

igne

d to

the

XL

R S

um O

utpu

t an

d St

ereo

L &

R

conn

ecto

rs,

and

are

used

to

avoi

d gr

ound

loo

ps a

nd i

nduc

edhu

m t

hat

som

etim

es o

ccur

whe

nco

nnec

ting

the

D-5

.5's

XL

R S

umO

utpu

t or

Ste

reo

L &

R O

utpu

tw

ith

othe

r eq

uipm

ent.

Sli

ding

the

Gro

und

Lif

t Sw

itch

from

the

NO

RM

AL

pos

itio

n to

the

LIF

Tpo

siti

on b

reak

s th

e gr

ound

con

-ne

ctio

n an

d m

ay r

educ

e hu

m a

ndno

ise.

For

mos

t ap

plic

atio

ns t

hew

itch

sho

uld

be l

eft

in t

he N

OR

-M

AL

pos

itio

n.

Eff

ect

Ret

urn

Jack

(E

FF

RE

T)

Thi

s 1/

4" p

hone

jac

k is

use

d in

conj

unct

ion

wit

h th

e E

ffec

t S

end

jack

to

co

nnec

t an

ou

tboa

rdef

fect

s de

vice

(i

e.,

dela

y or

re-

verb

) to

th

e D

-5.5

. T

he

Eff

ect

Ret

urn

jack

sho

uld

be c

onne

cted

to

the

outp

ut

of

the

effe

ct.

Nom

inal

inp

ut l

evel

is

— 2

0dB

wit

h an

im

peda

nce

of 1

0k o

hms.

Rev

erb

Ret

urn

Jack

(R

EV

RE

T)

Thi

s 1/

4" p

hone

jac

k is

use

d in

conj

unct

ion

wit

h th

e R

ever

bse

nd j

ack

to c

onne

ct a

n ou

tboa

rdef

fect

s de

vice

(ie

., de

lay

or r

e-ve

rb)

to

the

D-5

.5.

The

E

ffec

tR

etur

n ja

ck s

houl

d be

con

nect

edto

the

out

put

of th

e ef

fect

dev

ice.

Nom

inal

in

put

leve

l is

-2

0dB

wit

h an

im

peda

nce

of 1

0k o

hms.

Whe

n a

plug

is

inse

rted

int

o th

isja

ck,

the

buil

t-in

rev

erb

circ

uitr

yis

aut

omat

ical

ly c

ut o

ff.

CA

UT

ION

- T

he g

roun

d pi

n on

the

AC

plu

g sh

ould

not

be

re-

mov

ed u

nder

any

cir

cum

stan

ces.

If t

he D

-5.5

mus

t be

use

d on

an

AC

cir

cuit

wit

h no

gro

und

or a

ndop

en

grou

nd,

then

a

suit

able

grou

ndin

g ad

apte

r sh

ould

be

used

an

d it

s gr

ound

te

rmin

alsh

ould

be

secu

rely

att

ache

d to

ago

od e

arth

con

nect

ion.

Fai

lure

todo

so

w

ill

resu

lt

in

incr

ease

dno

ise

and

shoc

k ha

zard

.

Aux

1 R

etur

n Ja

ck (

AU

X 1

RE

T)

Thi

s 1/

4" p

hone

jac

k ca

n be

use

din

con

junc

tion

wit

h th

e A

ux

1Se

nd j

ack

to c

onne

ct a

n ou

tboa

rdef

fect

s de

vice

(ie

., de

lay

or r

e-ve

rb)

to

the

D-5

.5.

The

A

ux

1R

etur

n ja

ck s

houl

d be

con

nect

edto

th

e ou

tput

of

th

e ef

fect

.N

omin

al i

nput

lev

el i

s —

20d

Bw

ith

an i

mpe

danc

e of

10k

ohm

s.

Aux

2 R

etur

n Ja

ck (

AU

X 2

RE

T)

Thi

s 1/

4" p

hone

jac

k ca

n be

use

din

con

junc

tion

wit

h th

e A

ux 2

Send

jac

k to

con

nect

an

outb

oard

effe

cts

devi

ce (

ie.,

dela

y or

re-

verb

) to

th

e D

-5.5

. T

he

Aux

2

Ret

urn

jack

sho

uld

be c

onne

cted

to

the

outp

ut

of

the

effe

ct.

Nom

inal

in

put

leve

l is

-2

0dB

wit

h an

im

peda

nce

of 1

0k o

hms.

Eff

ect

Send

Jac

k (E

FF

SE

ND

)T

his

1/4"

pho

ne j

ack

is u

sed

inco

njun

ctio

n w

ith

the

Eff

ect

Re-

turn

jac

k to

con

nect

an

outb

oard

effe

cts

devi

ce (

ie.,

dela

y or

re-

verb

) to

th

e D

-5.5

. T

he

Eff

ect

Sen

d ja

ck s

houl

d be

con

nect

ed to

the

inpu

t of

the

eff

ect.

Nom

inal

outp

ut

leve

l is

+

4dB

w

ith

anim

peda

nce

of I

k oh

ms.

Rev

erb

Sen

d J

ack

(R

EV

SE

ND

)T

his

1/4"

pho

ne j

ack

is u

sed

inco

njun

ctio

n w

ith

the

Rev

erb

Re-

turn

jac

k to

con

nect

an

outb

oard

effe

cts

devi

ce (

ie.,

dela

y or

re-

verb

) to

the

D-5

.5.

The

Rev

erb

Sen

d ja

ck s

houl

d be

con

nect

ed to

the

inpu

t of

the

eff

ect.

Nom

inal

outp

ut

leve

l is

+

4dB

w

ith

anim

peda

nce

of 1

k oh

ms.

Rea

r P

anel

(D

-5.5

)R

CA

Sum

Pos

t A

cces

sory

Pat

ch P

oint

s(P

OST

IN

/OU

T)

The

se R

CA

pin

jac

ks a

re u

nba-

lanc

ed,

wit

h a

nom

inal

lev

el o

f—

l0dB

. In

put

jack

im

peda

nce

is10

k oh

ms,

and

out

put

jack

im

pe-

danc

e is

1k

ohm

s. T

he A

cces

sory

jack

s al

low

sig

nal

proc

essi

ng a

ndef

fect

dev

ices

to

be i

nser

ted

into

the

sign

al p

ath,

the

reg

ular

sig

nal

path

is

inte

rrup

ted

whe

n a

plug

is i

nser

ted

into

the

Acc

esso

ry i

nja

ck.

RC

A S

um P

re A

cces

sory

Pat

ch P

oint

(PR

E I

N/O

UT

)T

hese

RC

A p

in j

acks

are

unb

a-la

nced

, w

ith

a no

min

al l

evel

of

— l0

dB.

Inpu

t jac

k im

peda

nce

is10

k oh

ms,

and

out

put j

ack

impe

-da

nce

is 1

k oh

ms.

The

Acc

esso

ryja

cks

allo

w s

igna

l pr

oces

sing

and

effe

ct d

evic

es t

o be

ins

erte

d in

toth

e si

gnal

pat

h. T

he r

egul

ar s

ig-

nal

path

is

in

terr

upte

d w

hen

apl

ug i

s in

sert

ed i

nto

the

Acc

es-

sory

in

jack

.

Ster

eo L

& R

out

put

jack

s(S

T L

& S

T R

OU

TPU

T)

The

unb

alan

ced

RC

A p

in j

acks

,1/

4" p

hone

jac

ks

and

elec

tron

i-ca

lly

bala

nced

X

LR

co

nnec

tors

are

wir

ed i

n pa

rall

el.

The

RC

Aja

ck h

as a

nom

inal

out

put l

evel

of

— l0

dB a

nd a

n im

peda

nce

of 1

koh

ms,

an

d th

e 1/

4" p

hone

jac

kha

s a

nom

inal

ou

tput

le

vel

of+

4dB

an

d an

im

peda

nce

of 1

koh

ms.

The

XL

R c

onne

ctor

s ha

vea

nom

inal

out

put

leve

l of

+4d

Ban

d an

im

peda

nce

of 1

k oh

ms.

All

ja

cks

may

be

us

ed

sim

ul-

tane

ousl

y.RC

A S

tere

o L

& R

Pre

Acc

esso

ry P

atch

Poi

nts

(PR

E I

N/O

UT

)T

hese

RC

A p

in j

acks

are

unb

a-la

nced

, w

ith

a no

min

al l

evel

of

— l0

dB.

Inpu

t jac

k im

peda

nce

is10

k oh

ms,

and

out

put j

ack

impe

-da

nce

is 1

k oh

ms.

The

Acc

esso

ryja

cks

allo

w s

igna

l pro

cess

ing

and

effe

ct d

evic

es t

o be

ins

erte

d in

toth

e si

gnal

pat

h. T

he r

egul

ar s

ig-

nal

path

is

inte

rrup

ted

whe

n a

plug

is

inse

rted

int

o th

e A

cces

-so

ry i

n ja

ck.

Rea

r P

anel

(D

-5.5

)G

roup

Out

put

jack

s(G

RO

UP

OU

TPU

T)

The

unb

alan

ced

RC

A p

in j

acks

and

1/4"

pho

ne j

acks

are

wir

ed i

npa

rall

el.

The

R

CA

ja

ck

has

ano

min

al o

utpu

t le

vel

of —

10d

Ban

d an

im

peda

nce

of 1

k oh

ms,

whi

le t

he 1

/4"

jack

has

a n

omin

alou

tput

le

vel

of

+4d

B

and

anim

peda

nce

of 1

k oh

ms.

The

jack

sm

ay b

e us

ed s

imul

tane

ousl

y.

RC

A T

ape

Inpu

t (T

AP

E I

N)

The

se R

CA

pin

jac

ks a

re u

nba-

lanc

ed,

wit

h a

nom

inal

lev

el o

f-2

0dB

an

d im

peda

nce

of 1

0koh

ms,

and

acc

ept

inpu

t so

urce

sfr

om

-20d

B

to

+ 1

0dB

. P

rope

rad

just

men

t of

bot

h tr

im c

ontr

ol(T

RIM

) an

d in

put

fade

r en

sure

opti

mum

si

gnal

-to-

nois

e ra

tio

and

min

imum

dis

tort

ion.

Dir

ect

Out

put

(DIR

EC

T O

UT

)T

he D

irec

t O

utpu

t on

eac

h ch

an-

nel

util

izes

an

unba

lanc

ed R

CA

pin

jack

wit

h an

im

peda

nce

of 1

koh

ms

and

a le

vel

of -

10dB

. T

heD

irec

t O

utpu

t is

po

st-E

Q/p

ost-

fade

r, a

nd i

s us

eful

for

rec

ordi

ngan

d fo

r se

ndin

g in

divi

dual

in

-st

rum

ents

to

a m

ain

PA

mix

erth

roug

h di

rect

box

es.

RC

A P

ost

Acc

esso

ry P

atch

Poi

nts

(PO

ST I

N/O

UT

)T

hese

RC

A p

in j

acks

are

unb

a-la

nced

, w

ith

a no

min

al l

evel

of

-10d

B.

Inpu

t ja

ck i

mpe

danc

e is

10k

ohm

s, a

na!

outp

ut ja

ck im

pe-

danc

e is

1k

ohm

s. T

he A

cces

sory

jack

s al

low

sig

nal

proc

essi

ng a

ndef

fect

dev

ices

to

be i

nser

ted

into

the

sign

al p

ath.

The

reg

ular

sig

-na

l pa

th i

s in

terr

upte

d w

hen

apl

ug i

s in

sert

ed i

nto

the

Acc

es-

sory

In

jack

.

RC

A P

re A

cces

sory

Pat

chP

oint

s (P

RE

IN/O

UT

)T

hese

RC

A p

in j

acks

are

unb

a-la

nced

, w

ith

a no

min

al l

evel

of

-10d

B.

Inpu

t ja

ck i

mpe

danc

e is

10k

ohm

s, a

nd o

utpu

t ja

ck i

mpe

-da

nce

is 1

k oh

ms.

The

Acc

esso

ryja

cks

allo

w s

igna

l pr

oces

sing

and

effe

ct d

evic

es t

o be

ins

erte

d in

toth

e si

gnal

pat

h. T

he r

egul

ar s

ig-

nal

path

is

in

terr

upte

d w

hen

apl

ug i

s in

sert

ed i

nto

the

Acc

es-

sory

in

jack

.

1/4"

ph

one

Cha

nnel

Inp

ut

(IN

-P

UT

)T

his

jack

is a

sta

ndar

d 1/

4" p

hone

jack

, w

ith

a no

min

al

leve

l of

-40d

B

and

an

impe

danc

e of

100k

oh

ms,

an

d ac

cept

s in

put

sour

ces

from

-40

dB t

o +

20dB

.P

rope

r ad

just

men

t of t

he p

ad a

ndti

rm c

ontr

ol (

PA

D/T

RIM

) an

d in

-pu

t fad

er e

nsur

e op

tim

um s

igna

l-to

-noi

se r

atio

and

min

imum

dis

-to

rtio

n. W

hen

a pl

ug i

s in

sert

edin

to t

he 1

/4"

inpu

t ja

ck,

the

cor-

resp

ondi

ng

XL

R

mic

in

put

orph

ono

inpu

t is

au

tom

atic

ally

swit

ched

out

of t

he i

nput

cir

cuit

-ry

-

Pha

ntom

Pow

er S

wit

ches

(PH

AN

TO

M1~

8)T

he

phan

tom

pow

er

swit

ch

onea

ch i

nput

cha

nnel

per

mit

s th

eus

er t

o su

pply

48V

DC

thr

ough

the

inpu

t co

nnec

tors

to

a co

nde-

nser

m

icro

phon

e.

If

phan

tom

pow

er is

not

req

uire

d, t

he s

wit

chm

ust

be i

n th

e "o

ff"

posi

tion

.

Ear

th T

erm

inal

The

se

may

be

used

to

pr

ovid

egr

ound

con

nect

ion

for

tape

dec

ksor

tur

ntab

les.

MID

I T

hru

Con

nect

ors

(MID

I T

HR

U)

The

MID

I si

gnal

fro

m t

he M

IDI

Inpu

t con

nect

or (M

IDI I

N, A

/B) i

ssp

lit

and

sent

un

alte

red

to

the

four

MID

I Thr

u co

nnec

tors

on

the

D-5

.5,

and

to s

ix m

ore

MID

I T

hru

conn

ecto

rs o

n th

e D

-5.5

E, i

f use

d.E

ach

of t

he M

IDI

Thr

u ja

cks

can

be c

onne

cted

to a

dif

fere

nt s

ynth

-es

izer

's M

IDI

Inpu

t ja

ck,

allo

w-

ing

one

MID

I ke

yboa

rd

or

se-

quen

cer

to

cont

rol

up

to

four

othe

r M

IDI

synt

hs.

(ten

w

hen

usin

g th

e D

-5.5

E

and

sixt

een

whe

n us

ing

the

two

D-5

.5E

's.)

Bal

ance

d X

LR

Mic

roph

one

In-

put

(MIC

)T

he X

LR

-typ

e m

icro

phon

e in

put

conn

ecto

rs a

re e

lect

roni

call

y ba

-la

nced

wit

h a

nom

inal

lev

el

of—

60dB

and

an

inpu

t im

peda

nce

of 1

k oh

ms,

and

wil

l ac

cept

sig

-na

ls f

rom

-60

dB t

o 0d

B.

Pha

n-to

m p

ower

ing

is p

rovi

ded

for

use

wit

h co

nden

ser-

type

m

ic-

roph

ones

(se

e P

HA

NT

OM

), a

ndon

ce a

gain

the

prop

er a

djus

tmen

tof

Pad

and

Tri

m c

ontr

ol (

PA

D/

RT

IM)

and

Inpu

t F

ader

wil

l in

-su

re

opti

mum

si

gnal

-to-

nois

era

tio

and

min

imum

di

stor

tion

.T

he m

ic i

nput

is

auto

mat

ical

lydi

scon

nect

ed

whe

n ei

ther

th

eco

rres

pond

ing

the

1/4"

ph

one

jack

is

used

.

MID

I In

put

DIN

Con

nect

ors

(MID

I IN

, A

/B)

The

se c

onne

ctor

s w

ill

acce

pt t

heM

IDI

outp

ut o

f an

y sy

nthe

size

r,se

quen

cer,

or

othe

r M

IDI

devi

ce.

Use

of

non-

MID

I-st

anda

rd D

INca

bles

, or

of

cabl

es l

onge

r th

an5m

(16

'5")

may

res

ult

in i

mpr

op-

er o

pera

tion

and

dat

a lo

ss.

RC

A P

hono

(R

IAA

)In

puts

(P

HO

NO

)T

hese

R

CA

pi

n ja

cks

have

a

nom

inal

lev

el o

f —

50d

B a

nd a

nim

peda

nce

of

50k

ohm

s,

and

acce

pt i

nput

sou

rces

fro

m -

50dB

to +

10dB

. P

rope

r ad

just

men

t of

the

pad

and

trim

con

trol

(P

AD

/T

RIM

) an

d in

put

fade

r en

sure

opti

mum

si

gnal

-to-

nois

e ra

tio

and

min

imum

dis

tort

ion.

Whe

nus

ing

a tu

rnta

ble

wit

h m

agne

tic

cart

ridg

e,

plac

e th

e ph

ono

EQ

IN/O

UT

sw

itch

on

the

fron

t pan

elto

the

"i

n"

posi

tion

.

Bus

s L

ink

C

onne

ctor

(B

US

SL

INK

)T

his

conn

ecto

r is

use

d to

lin

k th

eD

-5.5

wit

h th

e D

-5.5

E. E

xpan

der.

A

six-

foot

co

nnec

ting

co

rd

isin

clud

ed w

ith

the

D-5

.5E

.

L &

R C

ue In

put (

CU

E I

N L

/R)

The

se

1/4"

ph

one

jack

s al

low

acce

ss

to

the

ster

eo

cue

buss

.T

his

feat

ure

is e

spec

iall

y co

nve-

nien

t du

ring

rec

ordi

ng

appl

ica-

tion

s. T

hese

jack

s ha

ve a

nom

inal

inpu

t le

vel

of

-10d

B

wit

h an

impe

danc

e of

10k

ohm

s.

— 1

1 —

— 1

0 —

—

12

—

Front Panel (D-5.5E)

* The names of the functions on the D-5.5E are specified below as function of the input channel on the D-5.5 isthe same as the D-5.5E. Difference in functions are explained.

Power LED indicator and Switch (POWER)The power switch alternately turns AC power to the D-5.5E "on" and "off".The LED indicator lights when the switch is "on".

Tape/Source Switch (TAPE/SOURCE)

Signal/Peak LED Indicator (SIG/PEAK)

Input Level Selector (PAD)

Input Trim Control (TRIM)

High Equalizer Control (HIGH)

Mid Equalizer Center Frequency Control (MID FREQ)

Mid Equalizer Control (MID LEVEL)

Low Equalizer Control (LOW)

AUX 1 Control (AUX 1)

AUX 2 Control (AUX 2)

Reverb Control (REV)

Effects Control (EFF)

Group Assign Control 1 and 2 (GROUP LEVEL)

Group Assign Pan Control 1 and 2 (GROUP PAN)

Group Assign Control 3 and 4 (GROUP LEVEL)

Group Assign Pan Control 3 and 4 (GROUP PAN)

Channel Switch ON Indicator (CHANNEL ON)

Channel ON/OFF Switch (CHANNEL)

Writing Block

Input Fader

Cue Switch (CUE)

— 13 —

AC Power Cord(6 ft.)

Pushbutton Circuit Breaker(1A)

(PUSH RESET)This breaker is designed toprotect the D-5.5E in theevent of internal or externalfault. Wait about two mi-nutes after correcting thefault and push the button toreset the system and restoreproper operation.

MIDI Thru Connectors(MIDI THRU)The MIDI signal from theMIDI input connector (MIDIIN) is split and sent un-altered to the four MIDI Thruconnectors on the D-5.5, andto six more MIDI Thru con-nectors on the D-5.5E, ifused. Each of the MIDI Thrujacks can be connected to adifferent synthesizer's MIDIinput jack, allowing oneMIDI keyboard or sequencerto control up to four otherMIDI synths. (ten when usingthe D-5.5E and sixteen whenusing the two D-5.5E's.)

Earth Terminal

Balanced XLR MicrophoneInput (MIC)

Phantom Power Switches(PHANTOM 9~20)

1/4" Phone ChannelInput (INPUT)

RCA Pre AccessoryPatch Points(PRE IN/OUT)

RCA Post AccessoryPatch Points(POST IN/OUT)

Direct Output(DIRECT OUT)

RCA Tape Input(TAPE IN)

* The names of the functions on the D-5.5E are specified below as connection of theinput channel on the D-5.5 is the same as the D-5.5E. Difference in functions andconnection are explained.

Rear Panel (D-5.5E)

Buss Link Connector(BUSS LINK OUT)

This connector is used tolink the D-5.5E Expanderwith the D-5.5. A six-footconnecting cord is includedwith the D-5.5E.

Buss Link Connector(BUSS LINK IN)

This connector is used tolink the D-5.5E Expanderwith another D-5.5E Expan-der.

— 14 —

Block Diagrams

D-5.5 BLOCK DIAGRAM

D-5.5E BLOCK DIAGRAM

— 15 —

D-5.5 LEVEL DIAGRAM

Level Diagrams

D-5.5E LEVEL DIAGRAM

— 16 —

D-5.5E ONLYStereo phone jack is wired : Tip=Left, Ring=Right and Sleave=Common.All XLR type connectors are electronically balanced.The XLR type connectors are wired as follows Pin No.l-Ground, Pin No.2-Cold (Low), Pin No.3-Hot (High)

OUTPUT SPECIFICATIONS (D-5.5, D-5.5E)

D-5.5E ONLYAll XLR type connectors are electronically balanced.The XLR type connectors are wired as follows. Pin No.1-Ground, Pin No.2-Cold (Low), Pin No.3-Hot (High)

0dB is referenced to 0.775V RMS

Connector

¼" PHONE JACKRCA PIN JACKXLR-3-32 TYPE¼" PHONE JACKRCA PIN JACK

¼" PHONE JACK

RCA PIN JACK

RCA PIN JACK

¼" PHONE JACK¼" STEREO

PHONE JACK

Output Level

Nominal MAX. Before ClipFor Use With NominalActual Source ImpedanceOutput

GROUP 1~4

STEREO L & R SUM

AUX1 SEND, AUX2 SENDREV SEND, EFF SENDACCESSORY OUTPRE/POST (INPUT, GROUP,STEREO, SUM)DIRECT OUT 1~8<9~20>CUE OUT L & R

PHONES

Input

MIC 1~8<9~20>

INPUT 1~8<9~20>

PAD

0

30

0

30

TAPE 1~8<9~20>

PHONO (RIAA) 7 & 8

ACCESSORY IN PRE/POST(INPUT, GROUP, STEREO,SUM)

AUX1 RET, AUX2 RETREV RET, EFF RET

CUE IN L & R

Actual LoadImpedance

For UseWith Nominal

INPUT SPECIFICATIONS (D-5.5, D-5.5E)Input Level (Trim "0" to Trim "-30")

Nominal-60dB (0.78mV)

to -30dB (25mV)-30dB (25mV)

to 0dB (780mV)-40dB (7.8mV)

to -10dB (250m V)-10dB (250mV)

to + 20dB (7.8V)-20dB (78mV)

to + 10dB (2.5V)-50dB (2.5mV)

to -20dB (78mV) at 1kHz

-10dB (250mV)

-20dB (78mV)

-10dB (250mV)

MAX. Before Clip-40dB (7.8mV)

to -10dB (250mV)-10dB (250mV)

to +20dB (7.8V)-20dB (78mV)

to +10dB (2.5V)+10dB (2.5V)

to +40dB (78V)0dB (780mV)

to +30dB (25V)-30dB (25mV)

to 0dB (780mV) at 1kHz+ 10dB (2.5V)EXCEPT GROUP, STERO,SUM. ACCESSORY IN POST+6dB (1.6V)

+10dB (2.5V)

+24dB (12V)

Connector

XLR-3-31 TYPE

¼" PHONE JACK

RCA PIN JACK

RCA PIN JACK

RCA PIN JACK

¼" PHONE JACK

¼" PHONE JACK

0dB is referenced to 0.775V RMS

Accessory (D-5.5E ONLY)BUSS LINK CABLE 6ft. 1

* 0dB is referenced to 0.775V RMSSpecifications are subject to change without notice.

WeightD-5.5, D-5.5E22kg (48.5lbs)

Dimensions (W×D×H)

Power ConsumptionD-5.5 41WD-5.5E 39W

Meter ("0" = Nominal level of STEREO, SUM OUT and CUE bus)pair of 12 segment bargraph LED meter for STEREO L, R or SUM,CUE

Phantom Power48V DC is applied to MIC Input for powering condenser mic-rophones

Sig./Peak Indicator

EqualizationLOW ±15dB 20Hz ShelvingMID ±15dB 200Hz to 5kHz Variable PeakingHIGH ±15dB 20kHz Shelving

Sig. (Green) LED turn on at -30dB below nominal levelPeak (Red) LED turn over from Sig. (Green) at -3dB below clipping

Maximum Voltage GainMIC IN to SUM OUTMIC IN to STEREO OUT

MIC IN to GROUP OUTINPUT to GROUP OUTINPUT to AUX½, REV, EFF SENDAUX½, REV, EFF RET to GROUP OUT

All Fader minimumMaster (GROUP, STEREO or SUM) FaderNominal, D-5.5 onlyMaster (GROUP) Fader Nominal, D-5.5E con-nectionMaster (GROUP) and One Input FaderNominal

Equivalent Input Noise (MIC IN)Equivalent Input Noise IHF-A weighted (MIC IN)

Hum and Noise (20Hz to 20kHz)

Total Harmonic DistortionLess thanLess than

(MIC IN)(INPUT)

GENERAL SPECIFICATIONSFrequency Response

+0dB, -0.5dB 50Hz to 20kHz+0dB, -3.0dB 20Hz to 50kHz

Specifications (D-5.5, D-5.5E)

MICROPHONES

or LOWERIMP. LINES

or LOWERIMP. LINES

or LOWERIMP. LINES

or LOWERIMP. LINES

or LOWERIMP. LINES

Lines

Lines

Lines

Lines

Lines

Lines

or higher

+4dB (1 .2V)-10dB (250mV)+4dB (1.2V)+4dB (1.2V)-10dB (250mV)

+4dB (1.2V)

+ 10dB (250mV)

-10dB (250mV)

+4dB (1.2V)

+20dB (7.8V)+6dB (1.6V)+20dB (7.8V)+ 20dB (7.8V)

+ 6dB (1.6V)

+20dB (7.8V)

+ 20dB (7.8V)

+ 10dB (2.5V)

+ 20dB (7.8V)-6dB (390mV)/8+ 20dB (7.8V)/OPEN

104dB94dB

84dB64dB54dB34dB

-125dB*-127dB*

-100dB*-70dB*

-65dB*

-61dB*

0.3%0.1%

+4dB*+4dB*

1kHz1kHz

— 17 —

Rack Mounting Instructions

The D-5.5 and D-5.5E are designed for either console or rack-mount use, using a pair ofbrackets (included). The following procedure should be observed for the rack-mount use.

1. Remove both side panelsand armrest unscrewingand removing 6 screws.

2. Mount the brackets on bothsides of the chassis, using thescrews removed from theside panels.

3. The rear panel and blankpanel should be inter-changed to allow for easyconnection when the D-5.5and D - 5 . 5 E are r ackmounted.

a. Remove the rear panel corner frame and blank panelb. Put the rear panel in the original position of the blank panel.c. Put the corner frame back in place.d. Put the blank panel in the original position of the rear panel.

WARNING

The D-5.5 and D-5.5E contain voltage levels that may be hazardous to human life. Alwaysdisconnect the power cord from wall outlet prior to removing either unit's outer case.

— 18 —

Procedure for Changing Internal Switch Setting

NOTE:The internal switches have been provided for addedversatility when using the D-5.5 and D-5.5E in avariety of applications.

AUX 1 / AUX 2 SEND PRE/POST EQ SELECTIONSWITCH: Each input features an auxiliary send controlfor use as either an additional effects send, or as anon-stage monitor send. You should note that the Aux 1and 2 control are a "split" pot with the detentposition (12o'clock) being the off position. Typically,the control would be rotated clockwise ("post") whenused as an effects send. This enables the effects level tobe automatically increased as the input channel levelincreases. Obviously, since this signal is also derived"post" EQ, any changes made in the input channel's EQsettings will be reflected in the effects signal. When theAUX 1 or 2 control is to be used as an on-stagemonitoring send, the control would typically be rotatedcounter clockwise ("pre"). This allows the on-stagemonitor mix to operate independently of the inputchannel's fader. In other words, any change in the inputchannel's fader will not affect the level of the monitormix. The Aux Send Pre/Post EQ Selection Switch isactive only when the Aux 1 or 2 Control is used in the"pre" (counter clockwise) position. When the switch isset to the "pre" EQ position, the input channel's EQcontrols will not affect the on-stage monitor mix. This isparticularly desirable when the input source is amicrophone. Since an on-stage monitor system isnormally operated near acoustic feedback, a change inEQ (especially an increase in high frequencies) maycause ringing or squealing (feedback) through theon-stage monitor speaker system. However, when theinput source is a synthesizer, musical instrument, etc.,which is not so susceptible to feedback, you may desireto place the switch in the "post" EQ position so that theinput channel EQ will affect that instrument in themonitor mix.

NOTE:The Aux 1 and 2 controls are unable to independentlyderive the pre or post EQ signal via the pre/post EQselection switch, but always derive the same signal.Also the selection switch provides the pre or post EQsignal for the cue switch.

WARNING

The D-5.5 and D-5.5E contain voltage levels that may behazardous to human life. Always disconnect the powercord from wall outlet prior to removing either unit'souter case.

1. Disconnect the power cord from the wall outlet.2. Remove the four screws that secure the bottom panel

to the main chassis, and carefully remove the panel(See Fig 1)

Fig l

INPUTCHANNELPCBPRE

POSTPOST

PREPRE

POST

BUSS LINKCONNECTOR

Fig 2

3. Refer to block diagrams and Figure 2 for location andorientation of switches.

4. Set switches to desired positions.5. Carefully replace the bottom panel and secure with

four screws.6. The Aux send pre/post EQ switch is factory preset at

"POST" position (post-EQ).

— 19 —

* Dimensions with brackets

D-5.5E

* Dimensions with brackets

Appearance

D-5.5

FREQUENCY RESPONSEINPUT EQ CHARACTERISTICS

Characteristics Diagrams

FREQUENCY FREQUENCY

LEV

EL

LEV

EL

— 20 —

Toa Electric Co., Ltd.KOBE, JAPAN

Printed in Japan133-02-748-80