Fli Audio FL400.2-F1 User Manual
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FL800.4-F1
TERMINALS AND CONNECTIONS
1. Power LED
If the amplifier is operating normally the green LED will illuminate.
2. Front crossover frequency control
This control is used to set the HPF crossover frequency for the front amplifier channel.
The frequency is adjustable between 50Hz and 300Hz.
3. Front crossover mode select switch
This switch is used to select the crossover mode of the amplifier. FULL is full range output, HPF is
used to limit the amout of low frequency information passed to the speakers.
4. Front gain control
This control is used to match the input signal of the source to the front amplifier channel. See the
setup guide for more details.
5. Low level input
For connection to any source (headunit) with a low level output. This is your RCA output from the
source (headunit)
6. Rear gain control
This control is used to match the input signal of the source to the rear amplifier channel. See the
setup guide for more details.
7. Rear crossover mode select switch
This switch is used to select the crossover mode of the amplifier. FULL is full range output, LPF is
used to limit the amount of high frequency information passed to the speakers.
8. Crossover frequency control
This control is used to set the LPF crossover frequency for the rear amplifier channel.
The frequency is adjustable between 50Hz and 300Hz.
9. Bass boost
This control is used to add bass boost to the rear channels centred at 45Hz.
0dB, +6dB, +12dB settings are selectable.
10. Protection LED
If the amplifier is in protection mode the red LED will illuminate.
11. Speaker terminals
Used to connect the speaker wires to the amplifier. See the wiring configurations section for more
details.
12. Fuse
Replace only with same value ATC fuse:
2 x 25 amps.
13. Power terminals
Used to connect DC power to the amplifier. See the power connection section for more details.
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