Quote:
Originally Posted by Electronic M
Speakers can look fine and still sound like crap. The cone can rub, the suspension fail, the voice coil can have defects. When a problem is not obvious that is the time to test everything carefully.
If that someone is a conventional magnetic or ceramic type instead of the capacitive type most cobras used originally then you could take the output of another Phono with a cart that puts out similar voltage and see if the amp circuits in your unit sound good with that.... I've used that trick a few times.
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Well it seems that I spoke too soon about the power supply caps, as they just failed when I powered it on just now, there was a slight hum that started growing louder and then it started squealing and when it started squealing I quickly turned it off but now when I go to turn it on the tubes wont light up.
So I'm thinking the power supply filter caps must of suddenly failed catastrophically as it was working fine hum free for the most part up until just now.
So I wonder if that might of been part of the reason why it was putting out bad audio, because the filter caps were starting to go out and I didn't realize it.