a/d/s/ PQ40.2 - Manual (Page 9)

Internal signal routing
2-channel/4-channel input switch – routes RCA input from channels 1/2
to channels 3/4. When the switch is engaged,
channel 1 input is routed to both amplifier
channels 1 and 3 with input channel 2 routed to
amplifier channels 2 and 4.
Switch in the engaged position.
When the switch is disengaged, channels 1, 2, 3,
and 4 receive signal individually from their
respective inputs.
Switch in the disengaged position.
multi-cross
TM
crossover configuration
xover control 1/2 The crossover selection for channels 1 & 2 has three possibilities:
When the switch is in the left position, the crossover section of the amplifier is
bypassed. Channels 1 & 2 output is full range.
When the switch is the center position, channels 1 & 2 are filtered through a
12dB per octave high-pass crossover that is infinitely variable from 45Hz to
5,000Hz.
When the switch is in the right position, channels 1 & 2 receive signal from the
crossover output of channels 3 & 4. Note: When the switch is in the right
position, the output level is controlled by the ch 3/4 level control.
The crossover sections dedicated for channels 3 & 4 are activated by
depressing the switch next to each frequency adjustment control.
Both high-pass and low-pass crossovers are infinitely adjustable from
45Hz to 5,000Hz. The high-pass and low-pass sections may be used
individually or together to create a bandpass filter.
Note: When using both sections to create a bandpass filter, make sure you have selected a
low-pass frequency which is higher than the high-pass frequency!
System 4 – PQ40 in 2-channel bridged mode. Commonly used for subwoofers but may also be used
for full range, midbass or midrange applications depending on crossover mode and frequency setting.
Optional: AC502 can be used in this mode.
System 5 – PQ40 used in front high-pass , rear tri-mode operation. Channels 1 & 2 can be configured
for high-pass or full range operation. Rear channel must be configured for full range operation.
Important! Choose passive crossover frequencies for the subwoofer and high-pass speakers
that do not overlap.
8 15