Acoustic 320, low output, what to do?

[Enzo]

And from yesterday:

I wonder if R44,R45 is open, or not connected to +90 somehow.

I love it when circuit analysis combines with meter readings to pinpoint the problem.

Glad you found the trouble.

There is a note on the schematic that R45 is selected for no AGC actiion at 18v output into a 2 ohm load, and AGC does turn on by 19v.

COmpressor? Sure. It lets the signal get only so large, then the larger it gets, the more it shuts down the input. is ther a linear area in this response or is it just on off at some lever? I have no idea, you tell us from how your amp works.

And your English is flawless, certainly better than my Swedish. The only Swedish word I know is Volvo. Plenty of native English speakers use wrong terms all the time too.

[W2L]

Hello Enzo,

Sorry to disappoint you, but Volvo is not a Swedish word; it is latin and means " I am spinning" as far as I know...........
And by the way - the personal car division of Volvo is now owned by Ford.

But - here is short English/Swedish dictionary:

Resistor = motstånd
Capacitor = kondensator
Coil = spole
Transistor = transistor(!!)
Diode = diod!
Cable = ledning
Loudspeaker = högtalare
Collector = kollektor
Emitter = emitter
Base = bas
Voltage = spänning
Current = ström

and so on...

Have nice day,

//W2L

EDIT: About Volvo - In English you have for example the words "revolve" and "revolver" that describes a rotating fenomena, maybe these originates from Latin too, just like Volvo?

[gpc]

I do have it

Can somebody please help me with a readable schematic for Acoustic 320?
//W2L

...a complete schematics of acoustic 320 amp. I'm in germany and own that amp since years.
I might sell the schematics.

[Enzo]

Hi gpc, welcome to the forum. As to the 320, I already have it, and W does also now. Around here we don't sell schematics, we share them. I post them on the Ampix if they seem of general interest, and we also send them around direct between one another. I have provided a number of them to the collection at Schematic Heaven and to the collection at Blue Guitar.