Bearhug Compressor
Version 2.1
J
K
10nF
9.1Vz
H
InI
F
G
H
I
J
K
Q1
Q3
2.7K
10M
L
M
N
O
5817
2.2K
100nF
100K
22K
3
1
E
G
E
100K
D
F
D
100nF
G
C
Q2
2
3
47
10uF
C
B
100K
47uF
10M
4.7K
47pF
10uF
1M
10nF
10M
47uF
A
B
A
1K
1
2
1
Out
3
G
1n4148
1n4148
4.7uF
2
3
1
Vol
10K Lin
Comp
1K Rev log
Short/Long
2
Q1: BS170 (DGS). Q2: BC549C (CBE). Q3: 2N5457 (DSG)
This layout fits easily in a 1590A or 1590B.
See schematic and 1776 build doc for more info.
This is a revised layout to eliminate unnecessary parts and use better capacitor values.
Red 47R is an optional comp limit. You can simply connect comp pot 2 to the emiter of Q2 if omitting.