+14 Db Input Select; Highpass Freq.; Highpass Subsonic Select; Highpass Enable - Diamond D9 & TDX TECHNOLOGY Owner's Manual

D9 800.2

+14 dB Input Select

Pushing this button "IN" gives the signal inputs 14 dB of gain allowing them to see 0.3 -
6 V of signal. This should be used with head units that have a low pre-amp output
voltage. Leaving this button "OUT" is the default, allowing for signal voltages from 1.5 -
30 V. In this position, the amplifier will yield the lowest THD.

Highpass Freq.

Turning this control sets the Highpass crossover point from 50 Hz (fully counterclockwise)
to 5 kHz (fully clockwise) or 10 Hz to 1 kHz if in subsonic mode. (see highpass subsonic
select)

Highpass Subsonic Select

Pushing this button "IN" engages the Subsonic filter. The filter is in Highpass mode
when this button is left "OUT".

Highpass Enable

Pushing this button "IN" enables the Highpass filter. Leaving this button "OUT"
bypasses the filter entirely.
Lowpass Freq.
Turning this control sets the Lowpass crossover point from 50Hz (fully counterclockwise)
to 5kHz (fully clockwise).
Lowpass Enable
Pushing this button "IN" enables the Lowpass filter. Leaving this button "OUT" bypasses
the filter entirely.
Mono Enable
Pushing this button "IN" creates a mono signal for use with subwoofer systems. When
mono mode is selected, only RCA input channel 1 is used. Leaving the button "OUT"
defaults the amp to normal stereo mode.
©2005 Diamond Audio Technology. All Rights Reserved
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