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. [. . . ] 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. If one is not available, simply use the power antenna line. When a +12 volt DC signal is applied it will turn on the amplifier. +12V - A high current line run directly to the battery is required. This line should NOT be connected to the fuse block of the vehicle. 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. Although another fuse is located at the battery, in line with the battery high current line, this fuse MUST remain in the circuit to physically protect the amplifier. Ground Terminal Connect to a good chassis ground. The ground connection should be clean, unpainted metal to provide a good electrical connection. +12V 3. ) SPEAKER OUTPUT CONNECTIONS - These connections are used to connect to the loudspeakers with the appropriate impedance. It is imperative that these lines NOT be connected or touch the chassis of the vehicle in any way. Also, the (+) and (-) leads are in no way inner connected so the left channel (+) and the right channel (+) must remain independent. In addition, the (-) leads for the speakers CANNOT touch or be wired to the ground lead of the amplifier; these are NOT common ground amplifiers. Spade Connector Ring Connector 10 Gage Wire Sheet Metal Screw Drill 1/8" hole in chassis sheet metal Remote Terminal Connect the radio power antenna lead from the receiver to the amplifier terminal. This turns the amplifier on whenever the receiver is turned on. +12V Important If wiring connections are made wrong, the unit will not operate properly and it could be damaged. [. . . ] Carefully pack the unit and ship prepaid to the servicing location. 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. Specifically excluded from this warranty are failures caused by misuse, neglect, abuse, improper operation or installation, dropping or damaging, unauthorized service or parts, or failure to follow maintenance instructions or perform normal maintenance activities. Normal maintenance activities for car audio products include but are not limited to cleaning and other minor maintenance activities and adjustments that are outlined in the owner's manual or that are normally required for continued proper operation. [. . . ]