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System feedback coming thru speakers.....help

I just hooked up my system that I have been building for several months and I am getting some feedback out of the speakers. I ended up hooking up a different speaker and it still is doing the same thing. The speakers are all static-ie and the signal seems weak. Here is my system:
Sonograph SA 400 amp
CJ PV 11 with phono
Thorens TD 160 turntable
Hales T 3 speakers
Nakamichi dragon tape deck
Panasonic DVD S 53 as cd source (for now).
Just had a pair of audio quest bi wire speaker cables made today.

Any ideas?
Additional note: I am in a really old house......like late 1800's. Old wiring, two prong, pre grounding even. Could it be:
Line noise?
Cables touching behind my system?

Any suggestions would be greatly appreciated.

Thank you in advance!

Jason
jdvorak

Showing 3 responses by tbg

tbg
5,263 posts
 
Jdvorak, get another amp to try or take your amp in for repair.
tbg
5,263 posts
 
Lloydelee21, the standard procedure is to disconnect everything except the amp to the speaker wires. Turn on the amp. Do you have any noise? If you have noise with just the amp on, it is your wiring in the house. If not connect the preamp to the amp. Turn on the preamp and then the amp. Any noise? If so, it is your preamp or the interconnect wires. If not, connect one source and turn everything on. If there is noise, it is either that source or the interconnects to the preamp. If not, add the second source and turn everything on. If noise is present, it is that source or the interconnects to the preamp.

Actually, I think it is just a cold solder joint in which ever component you identify as the culprit above.
tbg
5,263 posts
 
Lloydelee21, as improbable as it seems that an amp in both channels would do this with any input but not without, I think this is the only obvious test.
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