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