Kaktus_Kontrafaktus
Member
Hi,
I found this amp a couple of months ago for what seemed like a very good price.
(270€ together with the AVP-8500 preamp which I immediately sold for 135€)
I've been rather happy with it but it does produce a buzzing noise both on the speaker outputs and directly from the amp.
At my typical listening distance, the buzzing from the speakers is on the edge of audibility, so it's not too pressing an issue but I'd like to get it fixed.
I'm on a rather limited budget at the moment, so I could use your in narrowing down the cause, estimating the cost of repair and deciding whether it's worth it.
The noise doesn't change with the input signal and persists when I disconnect the inputs and shut off every othe device in my flat (incl. lights, fridge, etc.), connecting the amp to another power outlet at the opposite end of the flat doesn't change anything either.
The noise in the speaker outputs seems identical on both channels and what's coming from the amp itself sound rather similar, too.
Mic in front of the tweeter:
Mic in front of the midrange driver (150-2600hz):
Mic on top of the amp (right above the transformers):
Pictures of the amp (please excuse the potato quality):
Specs:
(since it's not listed, weight is ~26kg/56lb)
Edit: Production date is October 28 1993
best regards
Jan
I found this amp a couple of months ago for what seemed like a very good price.
(270€ together with the AVP-8500 preamp which I immediately sold for 135€)
I've been rather happy with it but it does produce a buzzing noise both on the speaker outputs and directly from the amp.
At my typical listening distance, the buzzing from the speakers is on the edge of audibility, so it's not too pressing an issue but I'd like to get it fixed.
I'm on a rather limited budget at the moment, so I could use your in narrowing down the cause, estimating the cost of repair and deciding whether it's worth it.
The noise doesn't change with the input signal and persists when I disconnect the inputs and shut off every othe device in my flat (incl. lights, fridge, etc.), connecting the amp to another power outlet at the opposite end of the flat doesn't change anything either.
The noise in the speaker outputs seems identical on both channels and what's coming from the amp itself sound rather similar, too.
Mic in front of the tweeter:
Mic in front of the midrange driver (150-2600hz):
Mic on top of the amp (right above the transformers):
Pictures of the amp (please excuse the potato quality):
Specs:
(since it's not listed, weight is ~26kg/56lb)
Edit: Production date is October 28 1993
best regards
Jan
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