Hello good folks on the board,
I have a nice one here. A local church in the dominican republic bought a real Peavey amplifier. Only the sound was "no bueno"
If they hear that over here, there is something seriously wrong.
And there is! A local repair shop took out the original peavey electronics and build in two chippy chappy boards.
..............................................
And so, i'm trying to make something of it by:
Just by applying the rules for electronics (good cables)
earth grounding (does an amp need that?)
good soldering
a diagram
a DC protection
an output filter
Cooling of the drivers (they are not cooled...)
And if you folks have a remark about the electronics: SHOOT!
my first impression:
first of all: The capacitor C2 seems to be a big one for feedback.
R3 doesn't have a capacitor parallel
the protection circuit around the thyristor puzzles me.
There is no thermal stabilisation. What component is influenting the thermal behavior more? The triple rectifiers or transistor T20?
Good things:
The power transistors are ok
Let's make this a holy ampie again
Koert.
I have a nice one here. A local church in the dominican republic bought a real Peavey amplifier. Only the sound was "no bueno"
If they hear that over here, there is something seriously wrong.
And there is! A local repair shop took out the original peavey electronics and build in two chippy chappy boards.
..............................................
And so, i'm trying to make something of it by:
Just by applying the rules for electronics (good cables)
earth grounding (does an amp need that?)
good soldering
a diagram
a DC protection
an output filter
Cooling of the drivers (they are not cooled...)
And if you folks have a remark about the electronics: SHOOT!
my first impression:
first of all: The capacitor C2 seems to be a big one for feedback.
R3 doesn't have a capacitor parallel
the protection circuit around the thyristor puzzles me.
There is no thermal stabilisation. What component is influenting the thermal behavior more? The triple rectifiers or transistor T20?
Good things:
The power transistors are ok
Let's make this a holy ampie again
Koert.