From the VC3Q Manual
THE COMPRESSOR
The built-in JOEMEEK compressor is slightly different from the big studio
units like
the JOEMEEK SC2.2 or SC4, so that it is easier to operate with
musical instruments. The 'ATTACK' control is variable so that the impact of
the compression sound can be varied from a gentle effect (with the attack
adjusted fast) to more powerful sounds with longer attack times.
The compression release is variable from 125mS up to 1.5 seconds giving
a wide range of effects. An in/out switch allows comparison between
compressed and uncompressed sound.
Technically, the compressor is a feedback optical device where the
compression is provided by a light dependent resistor. The light source
works in a servo loop, the compression effect is carefully controlled and the
compression ratio varies with the amount of compression applied.
During slight compression, the ratio can be as low as 1.2:1. During heavy
compression, the ratio rises to about 7 to 1 although a feature of the
JOEMEEK compressor is that the ratio momentarily decreases during
transient signals; this effect works to retain brightness that is often lost with
other types of compressor.
From the VC6Q Manual
THE COMPRESSOR
The built-in JOEMEEK compressor is slightly different from the big studio
unit so that it is easier to use with musical instruments. The 'ratio' or slope is
variable to make very sensitive adjustments possible. The attack and
release are variable and have extreme ranges. Attack is variable from 0.5 to
5 milliseconds and the release from 250mS to 5 seconds. There is an in/out
switch for comparisons. The compression control is rotary. The
compression ratio varies from 1.5 to 1 up to 7 to 1 depending on musical
content and the setting of the 'slope' control.
Seems that there pretty similar, but with the compression on the VC3Q
being so interdependent on the other controls (attack, release), I doubt that there's a direct correlation with settings on the VC6Q.
I would set the input gain, compression, attack and release on both units the same and mess with the slope on the VC6Q 'till they were close.
Hope this helps,
Carmen
