
Hermansson Amplification
Active member
It’s time for another Simms!
I really like the big transformers in these amps.
Here’s the guts from the original PA circuit.
Out with the old and in with the new.
Making new turret boards.
Turret boards filled with NOS Mustard Capacitors and Iskra resistors along with some new components.
Installing the new circuits in the amp.
Here's the finished result:
It has two channels with gain, volume, treble, middle, bass and a three way gain structure switch.
Channel 2 also has a tightness control and a growl control. The controls for the power amp is master volume, presence, punch and deep.
Follow all my amp projects on my Facebook page: https://www.facebook.com/hermanssonamplification



I really like the big transformers in these amps.

Here’s the guts from the original PA circuit.


Out with the old and in with the new.

Making new turret boards.

Turret boards filled with NOS Mustard Capacitors and Iskra resistors along with some new components.

Installing the new circuits in the amp.

Here's the finished result:








It has two channels with gain, volume, treble, middle, bass and a three way gain structure switch.
Channel 2 also has a tightness control and a growl control. The controls for the power amp is master volume, presence, punch and deep.
Follow all my amp projects on my Facebook page: https://www.facebook.com/hermanssonamplification