This control (fig. 10) 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 three simple steps:
1. Set the volume of GAIN on the amplifier to Min (completely counter clock wise).
2. Turn on the head unit and adjust volume to 2/3 maximum, and set the BASS and TREBLE to zero.
3. Adjust the GAIN control clockwise until the sound just begins to distort, then back off slightly to cut distortion and operate
at optimum gain.
Remember, the gain control is not a volume control. Ignoring these three steps above may leave you with dam-
aged speakers and/or a damaged amplifier.
Input Gain Adjustment
Fig.10 GAIN Control
GAIN
MIN
MAX
ADJUSTMENTS AND SETTINGS
Bass EQ Adjustment
This special feature is designed to provide you more powerful sound quality, and it allows you to boost the real
Bass EQ up to +18dB. Keep in mind that more is not always better. Setting the control to the max (18dB) will
stress the amplifier and the speakers and could result in damage.
Fig.11 Bass EQ Control
0dB
18dB
BASS EQ
HPF (High Pass Filter) Adjustment
When you are using coaxial or component speaker system, this allows you to adjust high-pass X-over fre-
quency from 80Hz to 1.5KHz. To get better sound quality from coaxial or component speaker system, we
recommend the frequency should be higher than 65dB. Make sure the switch position of X-Over is at “HPF”
Fig.12 High Pass Control
80Hz
1.5KHz
HPF
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