Solid State Logic THE BUS+ User Manual page 11

S/C HPF (SIDE-CHAIN HIGH-PASS FILTER)
Introduces a 12 dB/oct (2nd order) High-Pass Filter into the compressor side-chain. 31-position
stepped pot ranging from OUT (fully counter-clockwise) to 300 Hz (fully clockwise). Steps are
in 10 Hz resolution.
MIX
Allows the dry (uncompressed) and wet (compressed) signal paths to be blended together.
31-position stepped pot range from DRY (fully counter-clockwise) to WET (fully clockwise).
By default, the control cross-fades between dry and wet paths but this can be altered in the
Settings menu to be a parallel control - i.e. the dry level is always kept at 100% and the wet
level 'fader' is brought up as you move the control towards WET, before switching to fully wet
only at the fully counter-clockwise position.
Please note that MIX only applies to the Bus Compressor part of The Bus+. D-EQ is
unaffected by the MIX control.
LOW THD
Most compressors by their nature start distorting low frequencies before high ones, particularly
when set for fast release times. Sometimes this forms part of the desirable 'analogue character'
but other times it is counter-productive. Pressing the LOW THD switch on The Bus+ introduces
a special circuit modification in the side-chain, helping to limit the amount of low frequency
distortion. Subjectively, LOW THD 'cleans up' the bottom-end, allowing you to achieve 'cleaner'
gain reduction than without it. Give it a try on your mix and see if you like it!
THE BUS+ User Guide
The graph to the left compares LOW THD
mode disabled vs enabled with a +4 dBu
test signal.
Bus Compressor settings:
Threshold 0 dB, Ratio 10:1, Attack 0.1 ms,
Release 0.1 s, Make-Up 0 dB.
Note how the distortion at low frequencies is
reduced with LOW THD enabled.
Tutorial
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