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my preamp has been acting up to the point where i'm afraid damage has been done down line to either my speakers or my power amp.
i dug out my old onkyo receiver and hooked it up to my speakers and found them to be in working order.
i'm not sure about testing for possible power amp damage. can i just hook up interconnects between my CD player and power amp without doing any damage?
as another testing option, i noticed the onkyo receiver has a tape monitor with output inlets. could i hook up interconnects between these inlets and power amp as a test without doing any damage?
Follow Ups:
You can also just take the cover off the amp and do a quick visual inspection. Might spot something that fried.
Also, what were the symptoms you heard that made you realize something was wrong?
Jonesy
"I know just enough to get into trouble. But not enough to get out of it."
i had work done on my preamp a while back...new transformer and current limiter put in. when i set it back up in my audio system and fed it input from my CD player, i got a torrent of sound coming through the speakers even though i had the volume on low. luckily, the speakers weren't damaged. i've been in contact with the guy who did my preamp work and he's very puzzled as to how this could happen. (i won't mention any names here, but he's very well respected in the audio biz)
anyway, i'll do a visual inspection of the power amps innards and if nothing is obviously wrong, i'll get back in contact my preamp repair guy and play it from there.
Some of those models had a separate Input/output jack.
If it does you can use that as a preamp out to amp.
Your main concern now Is to isolate which component is bad.
But Abe is correct about the DC on the speakers. If you get a blast of DC it will cook the speakers. So test that first with every setup you try.
Also does the amp have a balanced input or variable input?
Charles
the onkyo receiver is an oldie...TX-SV343. there's no preamp out, but there is a monitor output jack.
the amp is a Belles with variable input.
abe collins' advice of checking out my components with a multimeter is probably the way my for technologically-challenged self to go.
I'm no expert on the topic but I would measure the output terminals on the power amp with a multimeter to check for DC. Do this w/o anything connected to the input of the amp (disconnect the preamp). If there's a significant amount of DC at the output do not connect the amp the to speakers.
You can do the same with your preamp. Measure the preamp output w/o connecting it to an amp. Check for DC.
You can use your CDP as a source to your amp directly IF your CDP has a volume control. Do not use the tape monitor outputs. Turn the volume way DOWN before experimenting.
If your CD player has a volume control, you can connect it directly to the amp. If no volume control you will damage your speakers and your ears.
Do NOT use the tape out into your amp. The volume control is bypassed at that point and any sound will come out at full volume.
Look for "preamp out" if available on your receiver.
Dan Santoni
thanks much. no 'preamp out' on the receiver, but my CD player does have volume control.
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