User manual BLAUPUNKT MPA400

[. . . ] M PA M U LT I - C H A N N E L P O W E R A M P L I F I E R MPA 400us 3/2 Channel Mobile Audio Amplifier with 400 Watts Max. Power Amplificateur audio mobile de 400 watts de puissance maximum à 3/2 canaux Amplificador Móvil de Áudio de 31 Canales con Potencia Máx. de 400 vatios Amplificador Móvel de Áudio de 3/2 Canais com Potência Máx. de 400 Watts 2 3/ L NE AN CH ER W PO AM IF PL R IE MP A4 x2 00 W · 2 O HM W 80 2x + 0W 20 1x /2 00u s RS KE EA + SP CH2 ­ ­C H3 + AB ST LE FU +1 2V SE ­C H1 + BLAUPUNKT SPECIFICATIONS - MPA400US, 3/2 CHANNEL AMPLIFIER Below is a basic trouble-shooting guide to assist in seeking out and correcting a problem that may occur in the installation process. [. . . ] 2. ) HI-PASS CROSSOVER CONTROL (ch 1 & 2) - Once the "crossover frequency setting" is set to "HI-PASS", this control adjusts the frequency for which all signals ABOVE this setting are passed on to the speakers. 3. ) CROSSOVER FREQUENCY SETTING (ch 1 & 2) - the internal crossover frequency control setting of the amplifier can be switched to either the "flat" frequency response position or in a high-pass/low-pass mode. On this amplifier, the choice is for either 50-250 Hz in LOW-PASS mode or 50-500 Hz in a HIGH-PASS mode. 4. ) HIGH LEVEL INPUTS - Should RCA cables not be available from the radio you are able to tap onto the audio signal from the high level speaker outputs of the radio. This is most commonly used when the amp is an add-on device such as for a subwoofer system. 5. ) INPUT GAIN CONTROL (ch 1 & 2) - This controls the gain setting on the input of the amplifier. For high gain settings ( 0. 3 volts), this says that it takes ONLY 0. 3 volts to drive the amp to full output. For low gain settings (near 4 volts), this says that it takes nearly 4 volts to drive the amp to full output. If the amp is often going into distortion at only moderate volume settings on the radio, rotate this control towards the 4 volts setting to reduce the distortion. 6. ) LOW LEVEL INPUTS - The more commonly used inputs, these are connected to the standard RCA outputs available on nearly all aftermarket radios today. These lines are dedicated to left and right outputs of the radio, be it for front or rear speaker installations. The input gain settings of the amplifier (0. 3 - 4 volts) are referenced to these inputs. 7. ) INPUT GAIN CONTROL (ch 3) - This controls the gain setting on the input of the amplifier. For high gain settings ( 0. 3 volts), this says that it takes ONLY 0. 3 volts to drive the amp to full output. 8. ) CROSSOVER FREQUENCY SETTING (ch 3) - the internal crossover frequency control setting of the amplifier can be switched to either the "flat" frequency response position or in low-pass mode, 50-250 Hz. EL ­ INP UT R GAIN -+ L MIN MAX LEFT (+) LEFT (­) GREEN GREEN-BLACK (NOT USED) GREY-BLACK RIGHT (­) RIGHT (+) GREY "Common Ground" Radio Outputs HIGH-LEV +- EL ­ INP UT R GAIN -+ L MIN MAX LEFT (+) GREEN GREEN-BLACK (NOT USED) RADIO CHASSIS GROUND -ORCOMMON SPEAKER GROUND GREY-BLACK (NOT USED) RIGHT (+) GREY 9. ) POWER "ON" LED - This light will turn on when the amplifier receives a +12 volt High Level (Speaker Input) Wiring turn on signal from the radio in the vehicle. The input line to the "trigger" connection must be properly connected to the radio's trigger line which is often also the power antenna line. If the amp is properly wired, but the light does not turn on, verify the trigger line is properly connected, is receiving +12 volts, and the speaker outputs are not shorted to themselves or ground in any way. 10. ) LOW-PASS CROSSOVER CONTROL (ch 3) - Once the "crossover frequency setting" is set to "LOW-PASS", this control adjusts the frequency for which all signals BELOW this setting are passed on to the speakers. The power and speaker connections for this amplifier are explained in the summaries below and reference the numbered call-outs above. ­7 ­ POWER CONNECTIONS & SPEAKER OUTPUTS 1 23 Power Terminal (+12V) Connect directly to the vehicle battery + terminal with 10 gage wire (minimum) 1. ) POWER CONNECTIONS GROUND - This is the high current ground connection to the chassis of the car. It should be fastened to a clean ground connection in the car, capable of handling high current loads and within 3 feet (absolutely no longer than 3 feet). TRIGGER - This allows the amp to be remotely switched on from the radio and normally uses a dedicated "trigger" line output. It MUST be fused through its own dedicated fuse at the battery. +12V Spade Connector NOT SUPPLIED To Battery Terminal 10 Gage Wire 30 amp Fuse or Circuit Breaker Battery Terminal Adapter 2. ) FUSE - This fuse is only for catastrophic situations should the amplifier begin to self-destruct or incur installation situations where gross amounts of current are being required from the amplifier. [. . . ] Repaired and replacement car audio products shall assume the identity of the original for purpose of this warranty and this warranty shall not be extended with respect to such products. To obtain performance of this warranty, contact the nearest Blaupunkt authorized repair facility or our nearest office. A dated purchase receipt or other proof that the product is within the warranty period will be required in order to honor your claim. For further information, write to the Robert Bosch Corporation, 2800 South 25th Avenue, Broadview, Illinois, 60153, attention Blaupunkt Customer Service Department or call 1-800-266-2528. [. . . ]