User Manual Q&AAnswer
Jan 21, 2025 - 11:30 PM
To set up the Focal 091FDPSPO2 amplifier in 4 channel stereo mode, follow these steps:
1. Inputs: If you are using one pair of RCA cables, plug them into the Channel 3+4 (REAR) RCA inputs and select "2IN" on the switch. If you are using the Harley Molex harness, set the switch to "2IN".
2. Normal/Bridged: Set the switch to "NORM".
3. Slope: Choose the crossover slope you want for both channels by selecting either a 6db/octave slope or a 12db/octave slope.
4. Channels 1 & 2 Crossover Configuration: These channels can be run in Full Range or High Pass (HP) mode. To run in Full Range mode, adjust the HP control down to the 10Hz position. To run in HP mode, adjust the HP control to your desired HP frequency. Motorcycles typically use HP 120Hz.
5. Channels 3 & 4 Crossover Configuration: You can select between Full Range (FR), Low Pass (LP), High Pass (HP), or Band Pass (BP) mode. For FR, set the MODE switch to HP and adjust the HP control down to 10Hz. For HP, set the MODE switch to HP and adjust the HP control to set the HP frequency. For LP, set the MODE switch to LP, adjust the HP control down to 10Hz, and then adjust the LP control to set the LP frequency. For BP, set the MODE switch to LP, adjust the LP control to the desired LP frequency, and adjust the HP control to set the HP frequency. Motorcycles typically use HP 120Hz.
6. Gain Control: Use both gain controls to match your sources output level to your amplifier's input.
7. Speaker Outputs: Wire your speakers to the appropriate output wires, respecting the channels and the + and - phasing.
For more detailed instructions and diagrams, please refer to the Focal 091FDPSPO2 Universal-Fit Audio and Off-Road Gear Instruction Manual, specifically the "4 Channel Stereo Mode" section on page 2.
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