User's Manual
EQU MKII SERIES
www.altoproaudio.com
Version 1.2 NOV. 2007
LTOR
English
15/31 BANDS GRAPHIC EQUALIZER
CAUTIONRISK OF ELECTRIC SHOCK
DO NOT OPEN
IMPORTANT SAFETY INSTRUCTION
TO REDUCE THE RISK OF ELECTRIC SHOCK
PLEASE DO NOT REMOVE THE COVER OR
THE BACK PANEL OF THIS EQUIPMENT.
THERE ARE NO PARTS NEEDED BY USER
INSIDE THE EQUIPMENT. FOR SERVICE,
PLEASE CONTACT QUALIFIED SERVICE
CENTERS.
WARNINGTo reduce the risk of electric shockand fire, do not expose this equipmentto moisture or rain.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
Dispose of this product shouldnot be placed in municipal wasteand should be separate collection.
11.
12.
Move this Equipment only with a cart,stand, tripod, or bracket,specified by themanufacturer, orsold with theEquipment. Whena cart is used, usecaution whenmoving the cart /equipmentcombination toavoid possibleinjury from tip-over.
Permanent hearing loss may be caused byexposure to \ extremely high noise levels.The US. Government's Occupational Safetyand Health Administration (OSHA) hasspecified the permissible exposure to noiselevel.These are shown in the following chart:
According to OSHA, an exposure to high SPL inexcess of these limits may result in the loss ofheat. To avoid the potential damage of heat, it isrecommended that Personnel exposed toequipment capable of generating high SPL usehearing protection while such equipment isunder operation.
This symbol, wherever used, alerts you to thepresence of un-insulated and dangerous voltages
within the product enclosure. These are voltages thatmay be sufficient to constitute the risk of electricshock or death.
This symbol, wherever used, alerts you toimportant operating and maintenance instructions.
Please read.
Protective Ground TerminalAC mains (Alternating Current)Hazardous Live Terminal
ON: Denotes the product is turned on.OFF: Denotes the product is turned off.
The apparatus shall be connected to a mainssocket outlet with a protective earthingconnection.
The mains plug or an appliance coupler is usedas the disconnect device, the disconnect deviceshall remain readily operable.
CAUTIONDescribes precautions that should be observed toprevent damage to the product.
Read this Manual carefully before operation.
Keep this Manual in a safe place.
Be aware of all warnings reportedwith this symbol.
Keep this Equipment away from water andmoisture.
Clean it only with dry cloth. Do not usesolvent or other chemicals.
Do not damp or cover any cooling opening.Install the equipment only in accordance withthe Manufacturer's instructions.
Power Cords are designed for your safety. Donot remove Ground connections! If the plugdoes not fit your AC outlet, seek advice froma qualified electrician. Protect the powercord and plug from any physical stress toavoid risk of electric shock. Do not placeheavy objects on the power cord. This couldcause electric shock or fire.
Unplug this equipment when unused for longperiods of time or during a storm.
Refer all service to qualified service personnelonly. Do not perform any servicing other thanthose instructions contained within theUser's Manual.
To prevent fire and damage to the product,use only the recommended fuse type asindicated in this manual. Do not short-circuitthe fuse holder. Before replacing the fuse,make sure that the product is OFF anddisconnected from the AC outlet.
HOURS X DAY EXAMPLE
864321,510,50,25 or less
SPL
90929597100102105110115
Small gigtrainSubway trainHigh level desktop monitorsClassic music concert
Rock concert
IN THIS MANUAL:
1. INTRODUCTION.........................................................................1
2. FEATURES................................................................................1
3. CONTROL ELEMENTS................................................................2
4. APPLICATION............................................................................7
5. INSTALLATION & CONNECTION...................................................9
6. TECHNICAL SPECIFICATIONS
7. WARRANTY.............................................................................13
.....................................................12
1. INTRODUCTION
Thank you for your purchasing the EQU MKII series Graphic Equalizers.
With the EQU MKII series Graphic Equalizers you have acquired extremely
musical and flexible Graphic Equalizer. The high-end EQU MKII series are
based on many years of experience and are designed to provide a permanent
precise equalization to musician, performer, and studio engineer. They can be
used wherever is requested to modify the frequency "contour" of a sound and
can offer a solution to many common sound problems and allows the user to
use the creativity to obtain nice results in terms of sound characterization.
EQU Series Graphic Equalizers include the following seven models:
EQU131-MKII V2-Graphic Mono 31-Band Equalizer
EQU215-MKII V2-Graphic Stereo 15-Band Equalizer
EQU215TWIN-MKII-Graphic Stereo 15-Band Equalizer
EQU131VU-MKII-Graphic Mono 31-Band Equalizer/VU Meter 1
EQU231VU-MKII V2-Graphic Stereo 31-Band Equalizer/VU Meter 2
EQU231-MKII V2-Graphic Stereo 31-Band Equalizer
EQU231TWIN-MKII V2-Graphic Stereo 31-Band Equalizer
1
2. FEATURES
Constant Q circuitry with a 3% center frequency accuracy
Control range 6 dB/ 12 dB selectable
Active balanced and unbalanced input and output connectors
Variable input level control
Signal clip pilot
Ground "LIFT" switch to disconnect signal ground from chassis ground
Power off automatic bypass function
Line voltage selectable
Robust and compact design
Mountable in a 19" rack unit(1U)
Manufactured Under QS9000, VDA6.1 certified management system
Enjoy your EQU MKII and make sure to read this Manual carefully before
operation.
Dual 15 Band Graphic Equalizer Channel One
63 250 1.6K 6.3K40 160 1K 4K25 100 630400 2.5K 10K 16K 63 250 1.6K 6.3K40 160 1K 4K25 100 630400 2.5K 10K 16KINPUTLEVEL
0
+12
-12
+6
- 6
INPUTLEVEL
0
+12
-12
0dB
+12
-12
+6
- 6
Channel Two
INPUT OUTPUT
SIG CLIP SIGCLIP
RANGE
6 12
EQ
ON
16KHz
LOW-PASS
40Hz
HI-PASS
0dB
+12 INPUT OUTPUT
SIGCLIP SIGCLIP
RANGE
6 12
EQ
ON
16KHz
LOW-PASS
40Hz
HI-PASS
-12
EQU215TWIN
MKR
LTO
Dual 15 Band Graphic Equalizer
R
LTO
63 250 1.6K 6.3K40 160 1K 4K25 100 630400 2.5K 10K
0
+12
-12
+6
- 6- 6
0dB
+12
-12
Channel One
LEVEL16K
INPUT OUTPUT
126 ON
EQRANGE
40Hz
HI-PASS
16KHz
LOW-PASS
SIG CLIP SIGCLIP
63 250 1.6K 6.3K40 160 1K 4K25 100 630400 2.5K 10K LEVEL
0
+12
-12
+6
- 6
Channel Two
0dB
+12
-12
16K
INPUT OUTPUT
126 ON
EQRANGE
40Hz
HI-PASS
16KHz
LOW-PASS
SIG CLIP SIGCLIP
EQU215MK V2
R
LTO
31 Band Graphic Equalizer
31.5 50 100 200 500 1.25K 2.5K 6.3K 12.5K25 40 80 160 400 1K 2K 5K 10K63 125 315 800250 630 1.6K 4K3.15K 8K 16K 20K20INPUTLEVEL
0
+12
-12
0dB
+12
-12
+6
- 6
INPUT OUTPUT
OUTPUT
SIG CLIP SIG CLIP
RANGE EQHIPASS
6 12 ON16KHz40Hz
LOWPASS
EQU131VUMK
POWER OUTPUT
LTOR
3. CONTROL ELEMENTSSPOTLIG
HT
Front panel
1 11 3 9
210
12 56
8
7
4
EQU131VU-MKII
EQU215-MKII V2
4
8
7
1 15 6 2
3 12
9
10
11
EQU131-MKII V2
11
8
653
1
EQU215TWIN-MKII
12
9
10
1 22
4
11
12 9
102
3
4
5
8 713 6
1
2
20 31.5 50 100 200 500 1.25K 2.5K 6.3K 12.5K25 40 80 160 400 1K 2K 5K 10K63 125 315 800250 630 1.6K 4K3.15K 8K 16K 20K
R
LTO
INPUT OUTPUT
ON40Hz 16KHz126
SIGCLIP SIGCLIP
EQRANGE HIPASS
LOWPASS
31 Band Graphic Equalizer INPUTLEVEL
0 0dB
+12
-12
+12
-12
+6
- 6
EQU131MK V2
7
20 31.5 50 100 200 500 1.25K 2.5K 6.3K 12.5K25 40 80 160 400 1K 2K 5K 10K63 125 315 800250 630 1.6K 4K3.15K 8K 16K 20K
20 31.5 50 100 200 2.5K 6.3K 12.5K25 40 80 160 2K 5K 10K63 125 315250 1.6K 4K3.15K 8K 16K 20K500 1.25K400 1K800630
Channel One
Channel TwoDual 31 Band Graphic Equalizer
0
+12
-12
0dB
+12
-12
+6
- 6
INPUTLEVEL
INPUTLEVEL
0
+12
-12
0dB
+12
-12
+6
- 6
INPUT OUTPUT
CLIP
RANGE
12 ON16KHz40Hz
LOW-PASSHI-PASS
SIG CLIP
EQ
SIG
6
INPUT OUTPUT
CLIP
12 ON16KHz40Hz
SIG CLIP
RANGE EQLOW-PASSHI-PASS
SIG
6
EQU231TWIN
MK V2
R
LTO
20 31.5 50 100 200 2.5K 6.3K 12.5K25 40 80 160 2K 5K 10K63 125 315250 1.6K 4K3.15K 8K 16K 20K
20 31.5 50 100 200 500 1.25K 2.5K 6.3K 12.5K25 40 80 160 400 1K 2K 5K 10K63 125 315 800250 630 1.6K 4K3.15K 8K 16K 20K
500 1.25K400 1K800630INPUTLEVEL
INPUTLEVEL
0 0
