The JD-01 Compressor has been produced with
the help of Jerry Donahue who has given his invaluable feedback in
every aspect of the design, it is again based around the CA3080
Operational Transconductance Amplifier as used our other designs,
but with the addition of a BLEND control.
This models four external
controls are Attack, Blend, Sustain and Level, this being
output level only! the Input trim control available externally on our
other models is still available but as an internal trim preset which
can be adjusted on the PCB. So now more info about the BLEND part of
the design, basically the original Input signal goes through a Split
and Blend circuit allowing you to always have part of the input
signal appearing at the output, Jerry specified this as he wanted to
keep the dynamics of the original guitar signal, and be able to
"mix" this into what appears at the output socket.
With the blend
control fully Anti-clockwise only the original guitar signal will
appear at the output, fully clockwise only the compressed signal
will appear at the output, this is useful for setting the parameters
of the compressor, before you set a mix level, in between will give
you a mix of both. The Level control on this unit only adjusts the
compressed signal output so you can adjust the compressor to be
higher in level than the original signal if required.
following are demo videos of the DRW JD-01 Compressor