Input GAIN Adjustment
This control allows you to match the input level of the amplifier to the output level of your head unit. Matching
the input can be accomplished in four simple steps:
1. Make sure that the remote level control is not plugged in until after the master gain control is set.
2. Set the GAIN control on the amplifier to Min (completely counter clock wise).
3. Turn on the head unit and adjust volume to 2/3 maximum, and set the BASS and TREBLE to zero.
4. Adjust the GAIN control clockwise until the sound just begins to distort, then back off slightly to cut distor-
tion and operate at optimum gain.
Remember, the
GAIN control is not a volume control.
Ignoring these steps above may leave you with dam-
aged speaker and/or a damaged amplifier.
SUB SONIC 40 Click Detent Control
The subsonic control will filter out all frequencies below where the control is set and prevent those frequencies
from going to your subwoofer(s). This will prevent your subs from playing any low frequencies that may harm
the speaker. When this amplifier is used with a subwoofer in a Vented Woofer application it is important to set
the frequency of the filter to cutoff ½ octave below the vent frequency. This will prevent the woofer unloading
from bass notes which are too low for the vented woofer. Once the woofer is unloaded it is operating as a free
air driver and may experience damage by striking the back plate or by shearing off the spider. Proper setting
of the subsonic filter is critical.
See the chart on page 23 to set the subsonic filter to the precise cutoff frequency.
SET UP ADJUSTMENTS
Fig.7 GAIN Control
Fig.8 Sub Sonic Adjustment
GAIN
MIN
MAX
10Hz
50Hz