Graphic EQ, Parametric EQ, effects, and Premium Rack
Reference Manual
146
Buss Comp 369
Buss Comp 369 emulates a standard bus compressor that has been used in recording studios
and broadcasting stations since the 1980s. It produces a smooth and natural compression
that does not interfere with the expression in the source signal, in contrast with the aggressive
compression of the U76. Buss Comp 369 includes both a compressor and a limiter. You can
use both functions individually or in combination, according to your needs. Further, the rich
overtones generated by the audio transformers on the input/output circuits and the discrete
Class A amplifier add depth and unity to the sound quality.
STEREO mounting
DUAL mounting
1
INPUT ADJUST
Used to adjust the input gain. However, the output gain is linked to change in the
opposite direction, to prevent changes in pass-through volume (the volume when
COMP IN and LIMIT IN are off). For example, if INPUT ADJUST is +5dB, the input gain
is +5dB and the output gain is -5dB.
See below for more information about how to use INPUT ADJUST.
• If the level of the input signal sent to effects is too low to reach the threshold,
increase the input gain.
• Adjust the sound quality by changing the input level sent to the input circuitry (audio
transformer and Class A amplifier).
INPUT ADJUST structure
2
LINK (STEREO mounting)
Stereo link on/off
3
COMP IN
Compressor on/off
4
COMP THRESHOLD
Compressor threshold. However, the changing value is linked to INPUT ADJUST.
5
COMP RECOVERY
Compressor release time. The release times for a1 (auto 1) and a2 (auto 2) change
automatically. a1: Changes automatically between 100 ms and 2 sec. a2: Changes
automatically between 50 ms and 5 sec.
3
1
8
> A
B
C
4
2
5
6
7
1
9
> A
B
C
4
3
5
6
7
dBFS
dBFS
COMP THRESHOLD LIMIT THRESHOLD
Buss Comp 369
COMPRESSOR/LIMITER SECTION
INPUT
CIRCUIT
OUTPUT
CIRCUIT
OUTPUT GAIN
INPUT GAIN
INPUT ADJUST
COMPRESSOR
LIMITER
OUT
OUT
IN
IN
Since there are substantial changes in threshold, the changing display
values are linked. However, the internal conditions of the COMPRESSOR/
LIMITER SECTION do not actually change.
Linked in reverse