Addictive audio B250.4 Owners & Installation Manual - Page 9

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5. Input Gain/Level Control *NOT A VOLUME KNOB*

This allows for the adjustment of the gain of both channels to match the

output level of the source unit. In addition, it allows adjustment from 0.2V

to 6.0V.

6. Subsonic Filter

Control the high pass crossover point for the speaker outputs to eliminate

ultra low frequencies. This crossover is always on with a -12dB per octave

slope and adjustable from 15-60Hz. This filter is used mainly in ported

applications, to protect the subwoofers from excessive excursion below

the port tuned frequency.

enclosures, but can still be used to help protect the subwoofer system.

7. Auto-Start

When using high-level inputs turn this feature to "Auto-Start High-Level"

and the amplifier will turn on via signal sense rather than having to install a remote

(REM) turn on wire. If installing RCA input cables, turn this feature to "Head Unit

Remote" and install remote turn on cable to the REM input.

8. Bass Boost

This allows the ability to Boost low frequency response

9. Low Pass Filter

This controls the low pass crossover point for the speaker outputs. This

crossover, when selected, will attenuate the frequencies above the

crossover point with an adjustable slope of -12dB or -24dB per octave

(See #10) The crossover point is adjustable from 50-300Hz. This filter

reduces unwanted upper frequencies

subwoofer(s).

10. Low Pass Slope

Choose between -12dB or -24dB per octave slope for the Low Pass circuit.

The steeper the slope (higher the number) the quicker the notes

above/below the set point of #9 above fade away.

Not necessary when dealing with sealed

from being played through the

up to +18dB.

(45Hz)