JBL BP-300.1 CAR AMPLIFIER CIRCUIT DIAGRAM
CAR AMPLIFIER
JBL BP-300.1
CIRCUIT DIAGRAM
Test Conditions and Notes
All tests to be done, unless otherwise
specified, from 20Hz to 40KHz at 14.4V DC into 4 ohm loads and adjust the units
gain so that with a .775 volt input signal the unit is at its maximum rated
output. All measurements will be done using an Audio precision system one and
the supply voltage. An A+ line voltage of 14.4V DC shall be applied to the unit
under test for all measurements unless otherwise specified. The voltage applied
to the unit shall be measured at the power connection on the Amplifier.
Signal Source
Unless otherwise specified, all tests shall be conducted with the Audio Signal Generator output configured to be balanced, less than or equal to 50 ohm source impedance, and floating. The signal source "GND" shall be connected to the Amplifier PWR GND at the Amplifier.
Output Load
Unless otherwise specified, all tests shall be conducted with 4 ohm resistive loads having less than 10% reactive components at any frequency below 75KHz. Each resistor shall have a value that remains within 1% while dissipating the rated output of the unit under test. Power Indicator LED steadily illuminates for normal operation. LED blinks when protection circuitry is engaged, and during power up.
Signal Source
Unless otherwise specified, all tests shall be conducted with the Audio Signal Generator output configured to be balanced, less than or equal to 50 ohm source impedance, and floating. The signal source "GND" shall be connected to the Amplifier PWR GND at the Amplifier.
Output Load
Unless otherwise specified, all tests shall be conducted with 4 ohm resistive loads having less than 10% reactive components at any frequency below 75KHz. Each resistor shall have a value that remains within 1% while dissipating the rated output of the unit under test. Power Indicator LED steadily illuminates for normal operation. LED blinks when protection circuitry is engaged, and during power up.
Controls and Connections
1. It allows left and right input channels to be connected to be amplifier using RCA plugs.
2. Speaker Output Connector - Connect spea wiring to these connectors. See wiring inst tions on page 4 for more information.
3. Fuse - Two 20 Amp ATC type Fuses.
4. Power Connection for 12V+, GND and REM connections
for power wires. See wiring instructtions on page 4 for more information.
5. Input-Level Control - Adjusts input sensitivity for pre-amp level and speaker level inputs.
6. The electronic crossover is a 12dB/oct. Low pass filter which can be Set at any frequency between 32Hz and 320Hz.
7. The bass boost control will provide up to 6dB of boost at 50Hz.
8. It allows left and right input channels such as high level speaker output signals to be the amplifier.
5. Input-Level Control - Adjusts input sensitivity for pre-amp level and speaker level inputs.
6. The electronic crossover is a 12dB/oct. Low pass filter which can be Set at any frequency between 32Hz and 320Hz.
7. The bass boost control will provide up to 6dB of boost at 50Hz.
8. It allows left and right input channels such as high level speaker output signals to be the amplifier.
CIRCUIT DIAGRAM
POWER AND PRE AMP
INVERTER
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