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When many compressors are linked to the "STEREO LINK" mode, only one channel is controlling the
compression. When the 2500+ is linked, the control voltages are summed together, but both channels
are still detecting their own control voltages.
compressor when linking is used. Many popular units actually change when linked! Additionally, each
channel uses multiple VCA's to minimize noise and distortion found in single VCA compressors. The
input and output stages are ALL DISCRETE, using the API 2510 and the API 2520 op amps.
A TYPE switch that lets you choose between classic and modern compression characteristics: OLD for
vintage-style feedback compression and NEW for today's more common feed-forward compression.
The 3-position KNEE switch adjusts the shape of the curve at the onset of compression for an "over-
easy" type compression resulting in a very natural, uncompressed sound or a typical sharp knee type
that lends itself to a much more severe limiting effect.
The auto make-up GAIN function lets you adjust ratio and threshold controls without affecting the
output level. Alternately, make-up GAIN can be set manually.
The BLEND feature allows the mixed or parallel compression to be achieved on-board by allowing the
input and compressed signals to be "blended" in two different ways: input vs. output wet/dry
percentage (crossfade) or input plus output percentage (parallel).
2.0 Quick Start
One tip to get started: We try to design all of our processing modules with the understanding that
there is never enough time to read a manual and learn all of the features in the 10 seconds that is
allowed during a setup. If you simply set all of the parameters as follows the 2500+ will have a useful,
but conservative effect on the signal.
•
Set all of the knobs in the COMPRESSOR section to the 12:00 position
•
Set KNEE to MED
THRUST
•
Set
•
Set TYPE to NEW
•
Set L/R LINK to 50%
•
Set SHAPE to SLOW
•
Turn off MANUAL make-up gain (auto make-up gain on)
•
Set BLEND to off:
These settings will provide a good starting place for additional tweaking to achieve the desired sound.
2500+ Bus Compressor
®
to NORM
X
(Crossfade) or
This also eliminates changing of the tone of the
l l
(Parallel) not engaged
7
API
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