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Memphis car audio

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MAXIMIZE your MEMPHISUse this TOOLKIT to MAXIMIZE the enjoyment of your music by MAXIMIZING the performance of YOUR MEMPHIS CAR AUDIO system.VERSION 2.0Memphis Car Audio Quality Statement (what we believe about our products) We are confident there will be practically 0 failures if every Memphis Car Audio partner and customer installed and operated our products according to the product guidelines. A failureThank you very much for taking the time to invest in your stores future growth. Your business is very much a part of our business. As an independent Memphis Car Audio partner, you have already discovered what it takes to drive customers into your store. And you already employ talented installers and sales personnel. That is where having a great product line and a company that has your back fits into your stores profitability. is defined as any reason for one of our products to stop working properly. If you are not currently experiencing practically 0 failures with our products, we encourage you to become familiar with the contents of this manual. Your sales rep will work with you to help accomplish this goal. How to use this manual: Common Failures: This commentary provides further insight on typical causes for product failures. Product Application Guide: Designed to offer the best product combination between a given amplifier model and the desired quantity of subwoofers being powered. Each product family is color- coded for easier visibility. Please observe the proper wiring technique and recommended Memphis Car Audio enclosure (if available) under each subwoofer listed. The wiring action symbol(s) indicated are: "||" for parallel, "+||" for series-parallel and "||+" for parallel-series wiring. (See our subwoofer wiring diagram examples in this manual). Also, please note our recommended accessories for each amplifier application. Where an "X" is printed, no subwoofer models are available to work properly with that particular application. Extensive Product Application Guide: Created to help you determine all available subwoofer models that will work properly with each amplifier model. Compliance with this list is your first step in achieving lower product failures. Choose from a wider variety of subwoofer families and sizes on this list. Subwoofer Wiring Diagrams: Use these examples to establish the proper techniques necessary for series and parallel wiring. Subwoofer Power Handling Chart: Outlines the nature of each subwoofers power handling characteristics. Notice the yellow (optimum) regions, designed to give the best performance for each subwoofer model. Be sure to use the appropriate enclosure type based on which area of the power spectrum you are operating within. You should not apply an amount of power that falls in the Below Minimum Power category. The numbers above each color line indicate (from left to right): absolute minimum recommended power, lowest optimum power, highest optimum power, and absolute maximum recommended power. Exceeding the maximum recommended power number or going below the minimum recommended power will result in a voided warranty. Amplifier Gain Adjustments: Provides the correct settings for an amplifiers sensitivity range (gain) at the desired impedance. By not going beyond the AC output voltage listed for each amp, you ensure that an amplifier cannot create amplitude distortion (clipping), which in turn will greatly reduce the chance of product failures. For best accuracy, we suggest making final adjustments for crossover settings, subsonic filter, and bass boost settings before performing this process. To prevent damage to midrange speakers (or speakers that cannot be properly crossed over), we recommend disconnecting those speakers while performing this process. Enclosure Recommendations: All current Street Edge and Memphis Car Audio subwoofer models are listed on this chart for easy references to our recommended enclosure size. This chart is designed to interact with our Subwoofer Power Handling Chart recommendations. 1failureCommon failures and causesAmplifiersWhy does my amp go into protection mode and/or blow the fuse(s)?1. High gain or bass boost function setting, or improper crossover frequencyIf the amplifier gain (or bass boost) is too high versus the input signal, it will cause the amplifier to clip the output signal. The amplifier gain is actually a sensitivity control; it was designed to be set according to the audio input signal level. If less signal is available from the source unit into the amp, adjust the gain clockwise to match the amps sensitivity. If more signal is available from the source unit into the amp, less gain (counter-clockwise) is necessary to help the amp drive the signal to full output. Clipping an amp means to exceed the peak value of the amplifiers power supply voltage. This distortion of the waveform causes high current demand through the amplifiers output section. The transistors inside the amp will prompt the amps protection mode due to overload. Having a bass boost feature on the amplifier (or any external component, even the radio) can result in rapid clipping. A boost at a particular frequency (or band of frequencies) is added to the existing voltage- contributing to many amplifier failures! This can be best corrected by lowering the amp gain or bass boost (if applicable). This should be done by a certified installer.There are 3 common ways that amplitude distortion or clipping can be identified.x Use an oscilloscope to measure the signal voltage. If the peaks and troughs of the wave form are flattened out (figure 1) or the wave forms are not symmetrical, clipping is occurring.x Use a digital voltmeter to measure the voltage across the (+) and (-) speaker output terminals. This value should be less than (or equal to) the recommended amp rail voltage. If not, clipping is most likely occurring. (See the rail voltage chart in this guide.)x Some listeners can hear clipping audibly. The signal will sound choppy or have a static noiseor can be thought of as cutting in and out. Most listeners cannot hear this form of distortion unless the audio waveform is severely clipped.2. Not using the subsonic filter when appropriate (vented enclosures)A subsonic filter is designed to cut-off dangerously low frequencies from getting to the subwoofer, especially in a vented enclosure. The subwoofer(s) lose power handling rapidly when frequencies dip below the tuning frequency of a vented enclosure. A subsonic filter is a high pass filter that will remove unwanted and potentially damaging low frequencies from the subs. Subsonic filters are recommended for vented enclosures and are incorporated in our Class D amplifiers.3. Low battery voltageLow battery voltage (below 12V) creates the need for very high current demands to maintain constant output power through the amps power supply section. This causes heat and will reduce the available output voltage rail, even in an amplifier with a regulated power supply. This results in premature amplifier clipping, which may trigger the protection circuit. Conditions to check for this problem include (but are not limited to);x Poor ground wire connections (to the amp or the vehicle chassis)x Improper wire gauge being used for power and/or ground wirex Loose connections to other points (capacitors, battery(s), fuse or distribution block)x Not having sufficient capacity (batteries)x Not having a large enough alternator to keep batteries chargedWhen resistance enters the circuit path, voltage will drop across that resistance as current flows through it- leaving less available voltage at the amplifier. The alternator is the main device that constantly generates current (with the vehicle on). The battery(s) would be the reservoir that stores current and discharges it to the amp, and the amplifier is the root of current consumption. If there is a capacitor (or battery/or batteries) physically near the amp, it should be supplemental to the rest of your charging system.4. Low impedanceIf the speaker impedance goes below the amplifiers rated stability, high current flows through the amps output section transistors and may cause them to become saturated (shorted). This will most likely cause the amp to go into protection mode until the impedance becomes suitable for the amplifier to handle.Figure 15. DC offset DC offset generally comes from the source unit; it could potentially damage the input section of the amp and may be the root of the amplifiers protection status.6. Internal damageWhen an amp is internally damaged in locations other than the input power supply section, the unit will usually trigger the IC chip assigned to engage a protection fault condition. Therefore, there will not be an output under this condition. When this condition occurs, the amplifier must be repaired.What can I check for if my amplifier gets hot?1. Insufficient ventilation around the amplifier2. Loose connections to power/ground terminals on amplifier3. Low battery voltage at the amplifier4. Too low of an impedance connected to the amp5. An open audio signal ground in the RCA cables and/or within the amplifier traces6. Gain and/or amplifier settings improperly adjustedWhat is the relationship between using multiple amplifiers across multiple subwoofers that share a common airspace inside their enclosure?When multiple amplifiers are being used to power more than one voice coil (or subwoofer), symmetry among the amplifiers is of the utmost importance if the subs share a common airspace. This means that the low pass filter, subsonic filter, bass boost, and amp gain should all be set identically. Also, designing an enclosure with the subwoofers mounted equal distances from one another (and the port, if applicable) will help with an asymmetry problem. Do not mix single voice coil versions and dual voice coil versions of the same subwoofer in a common airspace together. If possible, use a small partition between multiple subs to create even air pressure between them.SpeakersWhy do my tweeters (or midrange drivers) keep blowing?1. Amp clipping is harsh on tweeters since their voice coil is small and cannot dissipate as much heat.2. High frequency band(s) being boosted can result in premature amplifier clipping. The device most often used to boost these frequencies is an equalizer.3. The farther away the speakers are from the listener, the less perceived output. As a result, some listeners tend to increase volume to compensate for this deficiency and end up damaging the tweeters/midrange.How do I know if my speakers are properly crossed over?1. Ideally cut-off above the speakers Fs (free air resonance) frequency. Tweeters need to be crossed over very high.2. Filter slope may dictate appropriate cut-off frequency; try using a steeper slope.SubwoofersWhat causes the voice coil former on my subwoofer to become discolored?1. Amplifier clipping causes distortion, resulting in excessive heat at the coil and coil former. If the coil former is Kapton or black anodized aluminum, there will generally be a white color in locations that are getting too hot inside the former.2. Over powering the subwoofer will also generate excessive heat on the voice coil. Clean power is rarely the cause of a defect. But too much clean power will generate excess heat and a voice coil can only dissipate a certain amount of heat.How did the dust cap on my subwoofer get cracked?1. Excessive movement (in either direction) causes stress right at the center of the cone. This is caused by amplifier distortion (clipping) or excessive power.3Why is there a rip (or tear) in my subwoofers cone and/or surround?1. Usually caused by object making contact with speaker cone or surround; be sure to offer the subwoofer clearance for excursion.2. Mechanical defects may be caused by over-excursion of subwoofer (too much power or not enough).When theres not enough power on a subwoofer, the DC voltage (amplifier clipping) will cause the cone to move farther outward and inward, creating severe mechanical stress.What causes a short on the voice coil on my subwoofer?1. Amplifier became defective while speaker load was connected2. Not enough power (distortion)3. Voice coil rubbing inside of gap caused by misalignment (weakened suspension). If the suspension of the sub (the spider and the surround section) has become weakened, its ability to control cone movement is more limited, resulting in a higher risk for mechanical damage.Wiring (Dont be stingy)So youve got the optimum source unit and have successfully transferred the audio signal with minimal deterioration to the amplifier, and your amplifier does a wonderful job of keeping the audio output signal clean. However, the wire gauge and wire quality have everything to do with maximum power transfer to the amplifier.Inappropriate wire gauge and poor copper quality result in added resistance hence less power transfer(conductivity). Illustrated below is an example of how much real power to the amplifier may be lost by using copper clad aluminum or a smaller wire gauge compared to 4 gauge pure copper on a 1000w amplifier.*Car Audio and Electronics Magazine, Apr 08, Wire Warnings, Garry Springgay Mandatory Alternator Upgrade!The 16-MC1.2500 and the 16-MC1.4000 both require an alternator upgrade in the installed vehicle. They both accept 0 gauge power and ground wire terminal connections. Also required are additional dedicated system batteries (ideally located near the amplifier) each rated at 1000 CCA or more. These batteries are in addition to the cranking battery. Although not required, we do recommend adding capacitance for supplementing battery voltage at the amplifier. Our 1 Farad capacitors (17-1FCAP or 17-1FCAPM) serve this purpose well. With either amp, the battery terminal wires should match the wire gauge used at the amplifier, ground wire, and the charging lead from the alternator. Be sure to also upgrade the ground connection from the case of the alternator to the vehicle chassis with the same gauge wires being used at the amplifier. The MC1.2500 will demand over 200 amps of current and the MC1.4000 will demand over 400 amps of current at full output with 14.4 volts applied. Select a solid chassis ground and mount the amp in a secure, well ventilated area for maximum performance. Not following the 2 requirements above will result in voiding the warranty. If more than 1 of these amplifiers are being installed in the same vehicle, please consult our technical support department.1 SUB2 SUBSAmp Model(Connection Method)RMS Power8"10"12"15"Recommended Accessories8"10"12"15"SE2.50(4 Ohms Bridged)140 WattsX(SE10S4)PE1X10(SE12S4)PE1X12X10GKITXXXXSE2.100(4 Ohms Bridged)280 Watts(MCP8S4)no enclosure available(PR10S4)PE1X10(PR12S4)PE1X12(PR15S4)PE1X158GKIT(MAS84D) +|| no enclosure available(SE10S8) ||PE2X10(SE12S8) ||PE2X12XSE4.50 (Front Channels 4 Ohms Bridged) 140 WattsX(SE10S4)PE1X10(SE12S4)PE1X12X8GKITXXXXSE1.250 (2 Ohms Mono)250 Watts(MCP8D4) ||no enclosure available(PR10D4) ||PE1X10(PR12D4) ||PE1X12(PR15D4) ||PE1X158GKITX(SE10S4) ||PE2X10(SE12S4) ||PE2X12XPR2.50 (4 Ohms Bridged)130 WattsX(SE10S4)PE1X10(SE12S4)PE1X12X10GKITXXXXPR2.75 (4 Ohms Bridged)200 Watts(MCP8S4)no enclosure available(SE10S4)SE1X10(SE12S4)SE1X12X10GKIT(MAS84D) +|| no enclosure available(SE10S8) ||PE2X10(SE12S8) ||PE2X12XPR2.100 (4 Ohms Bridged) 300 Watts(MCP8S4)no enclosure available(PR10S4)PE1X10(PR12S4)PE1X12(PR15S4)PE1X158GKIT(MCP8D4) +||no enclosure available(SE10S8) ||PE2X10(SE12S8) ||PE2X12XPR2.150 (4 Ohms Bridged) 400 WattsX(PR10S4)PE1X10(PR12S4)PE1X12(PR15S4)PE1X158GKIT(MCP8D4) +||no enclosure available(SE10S8) ||SE2X10(SE12S8) ||SE2X12XPR4.50 (Rear Channels 4 Ohms Bridged) 140 WattsX(SE10S4)PE1X10(SE12S4)PE1X12X8GKITXXXXPR1.500 (1 Ohm Mono)500 WattsX(M310D2)||PE1X10(M312D2)||PE1X12(M315D2) ||PE1X154GKIT(MCP8D4) ||no enclosure available(PR10D4) ||PE2X10(PR12D4) ||PE2X12(PR15D4) ||PE2X15PR1.1000 (1 Ohm Mono) 1000 WattsX(MOJO10D2) ||do not recommend prefab(MOJO12D2) ||do not recommend prefabX4GKIT/1FCAPMX(MCP10D4) ||SE2X10(MCP12D4) ||SE2X12(M315D4)||PE2X15MM2.100 (4 Ohms Bridged) 300 Watts(MCP8S4)no enclosure available(PR10S4)PE1X10(PR12S4)PE1X12(PR15S4)PE1X158GKIT(MAS84D) +|| no enclosure available(SE10S8) ||PE2X10(SE12S8) ||PE2X12XMM4.50 (Rear Channels 4 Ohms Bridged) 140 WattsX(SE10S4)PE1X10(SE12S4)PE1X12X8GKITXXXXMM1.500 (1 Ohm Mono) 500 WattsX(M310D2)||PE1X10(M312D2)||PE1X12(M315D2) ||PE1X154GKIT(MCP8D4) ||no enclosure available(MAS104D) ||PE2X10(MAS124D) ||PE2X12(PR15D4) ||PE2X15SC2.120 (4 Ohms Bridged) 420 WattsX(SC10S4)PE1X10(MCP12S4)PE1X12(PR15S4)do not recommend prefab8GKIT(MCP8D4) +||no enclosure available(MAS104D) +|| PE2X10(MAS124D) +|| PE2X12XSC4.55 (Rear Channels 4 Ohms Bridged) 230 Watts(MCP8S4)no enclosure availableXXX8GKIT(MAS84D) +|| no enclosure available(SE10S8) ||PE2X10(SE12S8) ||PE2X12XSC1.500 (2 Ohms Mono) 500 WattsX(SC10D4) ||SE1X10(SC12D4) ||PE1X12(M315D4) ||PE1X154GKIT(MCP8S4) ||no enclosure available(PR10S4) ||PE2X10(PR12S4) ||PE2X12(PR15S4) ||PE2X15MC2.100 (4 Ohms Bridged) 300 Watts(MCP8S4)no enclosure available(MCP10S4)PE1X10(MCP12S4)PE1X12(PR15S4)PE1X158GKIT(MCP8D4) +||no enclosure available(SE10S8) ||PE2X10(SE12S8) ||PE2X12XMC4.50 (Rear Channels 4 Ohms Bridged) 140 WattsX(SE10S4)PE1X10(SE12S4)PE1X12X8GKITXXXXMC4.75(Rear Channels 4 Ohms Bridged) 230 Watts(MCP8S4)no enclosure availableXXX4GKIT(MAS84D) +|| no enclosure available(SE10S8) ||PE2X10(SE12S8) ||PE2X12XMC4.125 (Rear Channels 4 Ohms Bridged) 360 WattsX(MCP10S4)PE1X10(MCP12S4)PE1X12(PR15S4)PE1X154GKIT(MCP8D4) +||no enclosure available(SE10S8) ||SE2X10(SE12S8) ||SE2X12XMC1.250 (2 Ohms Mono) 250 Watts(MCP8D4) ||no enclosure available(PR10D4) ||PE1X10(PR12D4) ||PE1X12(PR15D4) ||PE1X158GKITX(SE10S4) ||PE2X10(SE12S4) ||PE2X12XMC1.500 (1 Ohm Mono) 500 WattsX(M310D2)||PE1X10(M312D2)||PE1X12(M315D2) ||PE1X154GKIT(MCP8D4) ||no enclosure available(PR10D4) ||PE2X10(PR12D4) ||PE2X12(PR15D4) ||PE2X15MC1.1100 (1 Ohm Mono) 1100 WattsXX(MOJO12D2) ||do not recommend prefabX4GKIT/1FCAPM/VBF1X(M310D2)||PE2X10(M312D2)||PE2X12(M315D4)||PE2X15MC1.1100 x 2(Bridged Pair @ 2 Ohms Mono)2200 WattsXXX(MOJO15D4) ||do not recommend prefab0GKIT/1FCAPMx2/VBF1Secondary Battery UpgradeXX(MOJO12D2) +||do not recommend prefabXMC1.1500 (1 Ohm Mono)1500 WattsXX(MOJO12D2) ||do not recommend prefab(MOJO15D2) ||do not recommend prefab0GKIT/1FCAPMx2/VBF1Secondary Battery UpgradeX(M310D4) ||do not recommend prefab(M312D4) ||do not recommend prefab(M315D4)||do not recommend prefabMC1.1500 x 2(Bridged Pair @ 2 Ohms Mono)3000 WattsXXX(MOJO15D4) ||do not recommend prefab0GKITx2/1FCAPMx3/VBF1225A Alternator/Secondary BatteryXX(MOJO12D2) +||do not recommend prefab(MOJO15D2) +||do not recommend prefabMC5.700 (5th Channel @ 1 Ohm Mono)500 WattsX(M310D2)||PE1X10(M312D2)||PE1X12(M315D2) ||PE1X154GKIT/VBF1(MCP8D4) ||no enclosure available(PR10D4) ||PE2X10(PR12D4) ||PE2X12(PR15D4) ||PE2X15MC5.1400 (5th Channel @ 1 Ohm Mono)1100 WattsXX(MOJO12D2) ||do not recommend prefabX0GKIT/1FCAPM/VBF1X(M310D2)||PE2X10(M312D2)||PE2X12(M315D4)||PE2X15MC1.2500 (1 Ohm Mono) 2500 WattsXXX(MOJO15D2) ||do not recommend prefab0GKIT/1FCAPMx2/VBF1MANDATORY 200A Alternator/Secondary Battery XX(MOJO12D4) ||do not recommend prefabXMC1.2500 x 2(Bridged Pair @ 2 Ohms Mono)5000 WattsXXXX0GKITx2/1FCAPMx5/VBF1MANDATORY 250A Alternator/Secondary BatteryXXX(MOJO15D2) +||do not recommend prefabMC1.4000 (1 Ohm Mono) 4000 WattsXXX(MOJO15Q1) +||do not recommend prefab0GKIT/1FCAPMx4/VBF1MANDATORY 250A Alternator/Secondary BatteryXX(MOJO12D4) ||do not recommend prefab(MOJO15D4) ||do not recommend prefabMC1.4000 x 2(Bridged Pair @ 2 Ohms Mono)8000 WattsXXXX0GKITx2/1FCAPMx8/VBF1MANDATORY 300A Alternator/Secondary BatteryXXX(MOJO15Q1) +||do not recommend prefabProduct Application Guide (BEST FIT) ||=parallel +||=series-parallel Recommended MCA Enclosure ||=parallel +||=series-parallel Recommended MCA Enclosure Amp Kit recommendations based on wire distances up to 14ft with 13.8VDC battery voltage. If wire distances exceed 14ft, use amp kit with next largest gauge wire.Class AB amplifiers (50% efficiency averages). Class D amplifiers (75% efficiency averages).79Subwoofer Wiring Diagram ExamplesBlack Lines= Negative Connections Red Lines= Positive Connections Green Lines = Series Connections Two Single 40 Subwoofers n Parallel= 20 Two 0ual 40 Subwoofers n SerIes-Parallel= 40 Two Dual 40 Subwoofers n Parallel= 10 Two 0ual 20 Subwoofers n SerIes-Parallel= 20Three Dual 20 Subwoofers n Parallel-Series= 30 Three 0ual 40 Subwoofers n SerIes-Parallel= 2.670 Three Single 40 Subwoofers n Parallel= 1.330 Quad 10 Subwoofer WIth CoIls n SerIes-Parallel= 10Four Single 40 Subwoofers n Parallel= 10 Four Dual 40 Subwoofers n SerIes-Parallel= 20 13Street Edge AmplifiersImpedance SE2.50 SE2.100 SE4.50 SE1.2504 14.1 V x 2 (stereo) 20 V x 2 (stereo) 14.1 V x 4 (stereo) 25.3 V x 1 (mono)2 11.8 V x 2 (stereo) 16.7 V x 2 (stereo) 11.8 V x 4 (stereo) 22.4 V x 1 (mono)4 23.7 V x 1 (bridged mono) 33.5 V x 1 (bridged mono) 23.7 V x 1 (bridged mono) -----Across Channels 1&2 or 3&4Power Reference AmplifiersImpedance PR2.50 PR2.75 PR2.100 PR2.150 PR4.504 14.1 V x 2 (stereo) 17.3 V x 2 (stereo) 20 V x 2 (stereo) 24.5 V x 2 (stereo) 14.1 V x 4 (stereo)2 11.8 V x 2 (stereo) 14.1 V x 2 (stereo) 17.3 V x 2 (stereo) 20.5 V x 2 (stereo) 11.8 V x 4 (stereo)4 22.8 V x 1 (bridged mono) 28.3 V x 1 (bridged mono) 34.6 V x 1 (bridged mono) 40 V x 1 (bridged mono) 23.7 V x 1 (bridged mono)Across Channels 1&2 or 3&4Impedance PR1.500 PR1.10004 24.5 V x 1 (mono) 34.6 V x 1 (mono)2 24.5 V x 1 (mono) 34.6 V x 1 (mono)1 22.4 V x 1 (mono) 31.6 V x 1 (mono)Marine AmplifiersImpedance MM2.100 MM4.50 Impedance MM1.5004 20 V x 2 (stereo) 14.1 V x 4 (stereo) 4 24.5 V x 1 (mono)2 17.3 V x 2 (stereo) 11.8 V x 4 (stereo) 2 24.5 V x 1 (mono)4 34.6 V x 1 (bridged mono) 23.7 V x 1 (bridged mono) 1 22.4 V x 1 (mono)Across Channels 1&2 or 3&4SClass AmplifiersImpedance SC2.120 SC4.55 SC1.5004 21.9 V x 2 (stereo) 14.8 V x 4 (stereo) 33.5 V x 1 (mono)2 20.5 V x 2 (stereo) 14.8 V x 4 (stereo) 31.6 V x 1 (mono)4 41 V x 1 (bridged mono) 30.3 V x 1 (bridged mono) -----Across Channels 1&2 or 3&4MClass AmplifiersImpedance MC2.100 MC4.50 MC4.75 MC4.1254 20 V x 2 (stereo) 14.1 V x 4 (stereo) 17.3 V x 4 (stereo) 22.4 V x 4 (stereo)2 17.3 V x 2 (stereo) 11.8 V x 4 (stereo) 15.2 V x 4 (stereo) 19 V x 4 (stereo)4 34.6 V x 1 (bridged mono) 23.7 V x 1 (bridged mono) 30.3 V x 1 (bridged mono) 38 V x 1 (bridged mono)Across Channels 1&2 or 3&4 Across Channels 1&2 or 3&4 Across Channels 1&2 or 3&4Impedance MC1.250 MC1.500 MC1.1100 MC1.15004 22.4 V x 1 (mono) 22.4 V x 1 (mono) 34.6 V x 1 (mono) 38.7 V x 1 (mono)2 22.4 V x 1 (mono) 22.4 V x 1 (mono) 34.6 V x 1 (mono) 38.7 V x 1 (mono)1 ----- 22.4 V x 1 (mono) 33.2 V x 1 (mono) 38.7 V x 1 (mono)Hybrid AmplifiersImpedanceFront & Rear Channels Subwoofer Channel Front & Rear Channels Subwoofer Channel4 14.1 V x 4 (stereo) 22.4 V x 1 (mono) 17.3 V x 4 (stereo) 34.6 V x 1 (mono)2 12.2 V x 4 (stereo) 22.4 V x 1 (mono) 15.2 V x 4 (stereo) 34.6 V x 1 (mono)1 ----- 22.4 V x 1 (mono) ----- 33.2 V x 1 (mono)4 24.5 V x 1 (bridged mono) 30.3 V x 1 (bridged mono)Across Channels 1&2 or 3&4 Across Channels 1&2 or 3&4Mojo AmplifiersImpedance MC1.2500 MC1.40004 50 V x 1 (mono) 63.2 V x 1 (mono)2 50 V x 1 (mono) 63.2 V x 1 (mono)1 50 V x 1 (mono) 63.2 V x 1 (mono)>Perform setup with a digital voltmeter and disconnect speaker loads from the amplifier. Adjust source volume to 75%.MC5.700 MC5.1400Amplifier Gain Adjustments>Voltage measurements represent AC output voltage. Use 50Hz tone (0dB) for subwoofers. Use 1kHz tone (0db) for midrange.122 Gayoso Avenue Memphi s, Tennessee 38103 | www. memphi scar audi o. com | 800. 467. 2400Memphis Car Audio Install Tips It is very important to perform pre and post-installation tests for all vehicle electrical functions! Use a DVM to measure the cranking batterys voltage with the engine turned off- Continue to measure battery voltage while someone cranks the vehicle. If the voltage falls below 12V during this process, we strongly recommend having the battery tested by a qualied battery technician, as it may have weakened or damaged cells. Inspect all battery terminals, fuse connections, and grounds for corrosion and resistance.Be sure to upgrade battery terminal wires & charging leads (including ground) to the same gauge wires being used at the amplier. This also applies to the case ground of the alternator to the motor mount! Insulate all power wires that pass through metal with appropriate grommets.Choose different sides of the vehicle interior to run power wires than for RCA cables & speaker wires. Use the constant +12V and ground connections of the amplier to feed back to the radio along with the remote turn-on lead in a braided bundle.Before making a chassis ground connection and drilling into the vehicle chassis, be sure to double-check this point to prevent damage to fuel lines or important vehicle harnesses. Upon completing this connection, measure resistance between that point of the vehicle chassis to the cranking batterys ground terminal. If the resistance measurement is greater than 1 ohm, reconnect your grounds or choose a different point on the chassis of the vehicle that has greater continuity with the batterys ground. Making direct connections to the negative battery terminal is best performed if the wire distance is less than 18 inches. Fuse all batteries in the vehicle within 18 inches to protect the vehicle.If possible, set all functions and levels on the source unit to at (or the detent) position. Apply built-in equalizer or loudness functions provided on the radio with discretion, as these settings will have an impact on your amplier settings.Select the lowest possible gain adjustment on each amplier to minimize peak transient clipping. Apply only a marginal amount of bass boost (if available). Use subsonic lter adjustments (when possible) if subwoofers are used in a vented enclosure. Adjusting amp gain (sensitivity) is best performed with a DVM set on AC voltage and the source unit set to 75% volume, in accordance to the manufacturer (see our Amplier Gain Adjustments page). Once completing nal system adjustments, crank the vehicle and turn the source unit to 75% while measuring the battery voltage on the cranking battery rst. This provides a reference for available voltage to the audio system. If this measurement is low, the system may need additional charging upgrades. If the voltage available at this point is sufcient, then measure battery voltage at each amplier while the system is under its heaviest speaker load to ensure the most amount of voltage was transferred from the cranking battery to the amplier(s). Make certain that all ampliers are mounted in well ventilated areas and never mounted in an inverted position. Monitor temperature of each amplier to make sure that over-heating is not occurring. Be sure that each installed device is properly mounted in the vehicle. Use all supplied mounting hardware and rubber spacers to reduce vibration that could potentially cause damage.