User`s guide

2. FILTER LEVEL CONTROLS

Each of these sliders controls the output level of each of the 31 (or 15) bandpass filters. The center

detent position is grounded to assure flat response.

3. FILTER RANGE SWITCH & INDICATORS

The gain range of the filter sliders is switchable (as a group) from +/- 6dB to + /-12dB for maximum

boost/cut capability. At 6dB the green LED will illuminate and at 12dB the yellow LED will illuminate.

4. BYPASS SWITCH & INDICATOR

When the red LED is illuminated, this indicates that the unit or channel is in the bypass mode. Signal

is routed directly from the input to the output without passing through any circuit (often referred to as

”hard-wire bypass”). Use this switch to compare equalized and unequalized material, or to bypass the

EQ section in the event of power loss or unit failure.

5. OVERLOAD INDICATOR

This red LED illuminates if any section of the equalizer is within 5dB of clipping. Occasional flickering

of this LED is acceptable, but if it remains on more than intermittently you should turn down either the

equalizer’s level controls or reduce the output level of the preceding component to avoid audible

distortion.

6. HI PASS FILTER (LOW-CUT FREQUENCY CONTROL)

To cut down on unwanted low frequency signals, this control determines the roll-off frequency of the

High-Pass Filter (HPF). The roll-off frequency can be adjusted from 10Hz to 250Hz by turning this

knob. Because of its high roll-off slope, the HPF can be efficiently used to cut down the ”HUM” noise

from preceding instruments, or to reduce low frequency resonances, when speakers are installed in

an enclosed acoustic environment.

7. LOW PASS FILTER (HIGH-CUT FREQUENCY CONTROL)

To cut down on unwanted high frequency signals, this control determines the roll-off frequency of the

Low-Pass Filter (LPF). The roll-off frequency can be adjusted from 3kHz to 40kHz by turning the

knob. Because of its high roll-off slope, the LPF can be effectively used to cut down the high fre-

quency noise from preceding instruments, or roll-off excessive high frequency sounds to obtain a

more natural sound in acoustic situations.