AMP Module
Description
From Designer Tim Caswell’s own hand: The amplifier (
AMP
) is a 2 stage Class A discrete design using three pairs of hand matched
transistors. Envelope is usually applied to
ST1 CV1
;
ST1 CV2
goes thru an attenuverter and can be used for envelope or modulation;
ST2 CV1
goes to the 2nd stage, and is typically used for volume control;
ST2 CV2
goes thru an attenuverter providing access to the final
stage of modulation input.
!
The
AMP
, the
5089
, and the
3003
are Class A circuits. They draw more current from the +12 rail than from the -12 volt rail. If the
system power supply is under-sized, hum or buzz may be heard. In that case, larger filter capacitors and/or a larger power transformer
will be needed. The 4075 draws equally from both rails, and is more immune to hum. Like our time-perfected filters, this
Boomstar
Modular
AMP
module, a gorgeous all-in-one discrete VCA charmer, is hand-built entirely in the U. S. of A—just ask Rachael Herbison!
!
Potentiometer Potential
Two attenuverter, and two attenuation pots control the
INPUT
,
ST1 CV2
(CV),
ST2 CV2
(CV), and
OUTPUT
.
!
Switch It Up
Uber-useful continuous hypnotic
DRONE
for endless sustain/release, and
DRIVE
—the overdrive circuit from the
Boomstar
desktop—for
last stage push, clipping, good ol' dirty vintage fuzz fun, and tone-crushed distortion.
!
Patch It Up
Six patch points:
INPUT
,
ST1 CV1
,
ST1 CV2
,
ST2 CV1
,
ST2 CV2, OUTPUT
direct the deepest manipulation.
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