QUAD 4 Amplifier Owner’s Manual
Level and HPF/ FULL Control Adjustments
FRONT
REAR
LEVEL
QUAD 4
LEVEL
HI
HI
FULL
FULL
MAX
MIN
MAX
MIN
X-OVER
INPUT SIDE PANEL
INPUT LEVEL (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
three simple steps:
1. Set the volume of LEVEL 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 LEVEL control clockwise until the sound just begins to
distort, then back off slightly to cut distortion and operate at optimum
gain.
NOTE: The LEVEL control is not a volume control. Ignoring the three
steps above may leave you with damaged speaker and/or a damaged
amplifier.
HI / FULL X-OVER Switch adjustment (Front/Rear):
These switches activate the built-in electronic crossover network. When
set to FULL, this allows full spectrum (Bass/Mid/Treble) reproduction.
Moving the switch to HI, sets the onboard crossover to 110 Hz, which
cuts off low frequencies, and allows the channels with this switch
activated to pass only frequencies above 110Hz. Note: Default setting is
set to FULL.
14.
