Well I replaced the final coupling cap in the amplifier and sure enough the noises went away completely on the Magnavox and it plays perfectly now.
I was playing an old Harvest album on the record player and the electric bass notes were going extremely low on one of the songs on the album and the audio this stereo was producing was so good that it was quite literally making my walls and ceiling in my basement rattle to the beat of the song and the stereo wasn't even touching the wall or anything.
Anyways I had picked up the 10 MFD crossover caps at Radio Shack (or what I thought were the 10 MFD crossover caps) but when I got them home and went to install them I got a look at them and they turned out to be regular polarized electrolytic capacitors but when I installed them I didn't realize it until it was too late but what's weird is that the capacitors didn't explode or anything and they actually seem to be working at filtering the high and low frequencies like a regular crossover cap would, so would it do any harm to run this stereo with polarized caps in the crossover or should I actually go back to radio shack and get the actual crossover caps and put them into the speakers?