DESCRIPTION
FRONT PANEL
Power Switch: To turn the REQ313 on or off, press the upper or
lower portion of this button.
NOTE: ALWAYS TURN THE EQUALIZER ON BEFORE THE
POWER AMPLIFIER IS TURNED ON, AND TURN THE EQUAL-
IZER OFF AFTER THE POWER AMPLIFER IS TURNED OFF.
Filter Level Controls; Each of these sliders control the output level
of each of the 31 bandpass filters. Center detent position is
grounded for guaranteed flat response.
Filter Range Switch & Indicators: The gain range of the filter sliders
is switchable (as a group) from +/-6dB to +/-12dB. At 6dB the
green LED will light, at 12dB the yellow LED will light.
Bypass Switch & Indicator: When the red LED is lit, the equalizer
circuitry is bypassed. Use this switch to compare equalized and
unequalized material, or to bypass the EQ in the event of power
loss.
Overload Indicator: This LED lights if any section of the EQ circuitry
is within 3dB of clipping. Occasional blinking of this LED is accept-
able.
Low-Cut Frequency Control: This control determines the roll-off
frequency of the High-Pass Filter. This roll-off frequency can be
adjusted from 10Hz to 250Hz.
High-Cut Frequency Control: This control determines the roll-off
frequency of the Low-Pass Filer. This roll-off frequency can be
adjusted from 3kHz to 40kHz.
REAR PANEL
The rear panel contains the XLR and 1/4” input and output jacks.
Connect the power cable to a properly grounded AC outlet.
Fuse Holder: This receptacle contains an AC primary fuse. Always
replace this fuse with the same type and rating of fuse. If the fuse is
blowing out consistantly after each replacement, the unit is in need
of service.
SCHEMATIC
5
2
