Hi all.
I’ve replaced all of the electrolytic capacitors on the akai am-u1. And left the original films and ceramics in place.
Some had made it to the age of 40 and others like to low leakage orange 1uf 50v nippons hadn’t.
It doesn’t sound to bad considering. Not quite up there with the Cambridge audio axa25, but not bad.
The only thing that made me pause before was the woofers moving out, slightly back in, out and then fully back in on power up.
I’m measuring a few milli volts occasionally at the speaker outputs but other than that nothing.
I assume there’s 2 film capacitors near the outputs on filtering duty.
Is this a normal occurance on budget 80’s gear?.
Hmm. You checked DC at the speaker outputs? Moving in and out slightly is normal for non-relay units but all the way in and out? That’s what you’re saying?
Don’t think that’s all the way in and out. I’m assuming that’ll be output from the stk461 module. Reading up it’s as you say, normal for non relay amps without a delay on startup.