So I picked a good-looking set of speakers up at a thrift shop for 5 bucks (Aiwa SX-LM99). Can't find much on them on the internet but they appear to be working fine. I tested them at a friend's place who had a proper speaker pre-amp and stuff. Connecting them to my own setup, however, posed some issues. If I run a frequency sweep, they spike at around 180 Hz (very noticable when listening to music) and a couple HZs before that, the sound seems to pan around (first it seems as if i hear it left, then right, then left, then back to center as it should.) Any idea what's going on here? Will it be fixed if I get another speaker pre-amp? I'm currently using my turntable, perhaps that's adding some sort of EQ to compensate for the low end's in records? That's just speculation though. I'm sorry if I'm not very clear. Thanks for any help!