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Looks beauty-ful.
Help please - before I put this back together, can you guys\gals please take a quick look at transistor list and tell me if any jump out at you as known problems?
I'd really like to replace any now, before putting it back in service.
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well it says 2SC458 and 2SC1000 in the middle of your picture, i´d replace those before puting it together, those are pretty worthless.
or is it just the manual that recommends them as subs for 2SC945? must be a typo in that case
who would use those as subs for anything?
well it says 2SC458 and 2SC1000 in the middle of your picture, i´d replace those before puting it together, those are pretty worthless.
or is it just the manual that recommends them as subs for 2SC945? must be a typo in that case
who would use those as subs for anything?
What? No testing party at your place?
Madfro is referring to the DC offset, not the bias. The DC offset can measured at the speaker terminals +/- right and +/- left with the volume at minimum, speakers disconnected, tone controls off or set to zero. I'm assuming this is a direct coupled amp, and if so you'd look for a reading as close to 0mV for each channel. If the reading is 50mV or higher it might be worth your efforts to gain match the differential transistors in an attempt to lower the offset voltage for better performance.
Actually, I do have a question. The rectifier looks to be fairly robust (and easily replaced), so what's the opinion on upping the final filters from 6800\42 to 10K\50?
I'm thinking this will be just fine and in fact should be a nice upgrade.
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