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0
+6dB
+12dB
20Hz
40Hz 60Hz 80Hz 100Hz
QBASS
™
and CROSSOVER Operation
9
QBASS
™
For extra BOOM from your system, we've developed the
QBASS
™
bass control circuit. The
QBASS
™
control is located
to the left of the RCA outputs, and allows you to add up to
12dB of boost centered at 40Hz by rotating the control
clockwise.
QBASS
™
CAUTION:
QBASS
™
should only be used in systems with
strong subwoofers. 12dB is a lot of bass boost and could
damage full range speakers.
Crossover
Your new
POWERCLASS
™
amplifier has a 90Hz crossover
built in to provide system flexibility without the added expense
and installation of an outboard crossover. The
PC2100
has a
third-order Butterworth type 18dB per octave crossover, and
the
PC2200
and
PC2300
house a fourth-order Linkwitz-Riley
type, 24dB per octave phase correlated crossover for a tighter
sound. The speaker outputs of your amplifier are high pass or
low pass according to the HP/LP switch adjacent to the inputs.
You would choose low pass (switch out) to use this amp for
subwoofers, or choose high pass (switch in) to use this amp
for full range speakers. The RCA outputs are controlled by the
same HP/LP switch, but are always the inverse of the speaker
output crossover. If the HP/LP switch is out (LP) the RCA
outputs will be high pass, and if the HP/LP switch is in (HP) the
RCA outputs will be low pass. In addition, the speaker outputs
can be all pass (no crossover) by setting the Xover ON/OFF
switch to the off (out) position.
NOTE: The RCA outputs are always crossed over.The System
Diagrams beginning on page 12 show several ways to use the
internal crossover in your system.
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