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7. LP Button (Low Pass Filter)
A circuit that only passes signals below its cutoff frequency, selectable with the
LP knob, while attenuating all signals above it.
8. HP Button (High Pass Filter)
A circuit that only passes signals above its cutoff frequency, selectable with the
HP knob, while attenuating all signals below it.
9. 'Bump' Button
This engages a slight resonance at the cutoff frequency of the high-pass filter
(only). This helps retain some of the perceived bass energy, while still filtering
out unwanted frequencies below the cutoff. The 'bump' button was not provided
on the original 32C analog console, but was a common modification, thereafter.
10. PC/Direct Knob
This knob blends the signal from the PC and the input to the 32Ci.
11. 11. Headphone volume controls
Connect one or two pairs of stereo headphones to the two 1/4 ” TRS jack
sockets and adjust the volume with these knobs. The headphone outputs should
be routed to analogue outputs 1/2 and 3/4 respectively (as stereo pairs).
12. Master knob
This knob controls the volume of the main output 1/2, unless the 'Alternate'
button is selected, in which case the knob will control outputs 3/4, (if no
monitoring is set up for outputs 3+4, the 'Alternate' button effectively becomes
a 'Mute' button). The surrounding LED lights provide responsive Left + Right
channel metering, (in six segments indicated by the LEDs, (-20dB, -10dB, -6dB,
0dB, +6dB and +10dB). This metering shows the level for the 'monitor mix' being
sent to the speakers, i.e. it shows the combined level of the direct inputs and PC
playback.
Note: if you turn the mix knob all the way to 'direct' and speak into a mic (or
use instrument or line-in sources), the user can benefit from the level meter for
setting the mic/instrument/line in input level.
13. Alternate button
Select this button to switch between two separate monitoring options via outputs
1/2 and output 3/4. The Main output level (1/2) is '+4', intended for 'pro level'
speakers. The 'Alt' output has an output level of '-10', which is better for a
consumer system and/or a speaker which have a limited trim range and are too
loud when fed a '+4' signal.
