Stereo channel balance/image


I just recently setup a rega p3 turntable with a cambridge 540p phono preamp on my system. I noticed that there is somewhat of a channel imbalance. The left speaker is just slightly weaker than the right speaker. I tested every possible thing , moving the speakers, swapping the wires, changing interconnects and i've come to the conclusion that it is not the amp. There's something definetely wrong with the turntable or the phono preamp it only seems to happen when I play vinyl. Strange thing is when I played Bob Dylan's "love and theft" lp, the stereo image seemed just right same thing for the "bringing it all back home" 180g lp... I also noticed that the right woofer is working and "thrumping" more than the left when the music is louder. Does any know why this is hapening? Any suggestions?
128x128decapg
I have to say channel imbalance is something that makes me crazy. You should be able to isolate imbalance to either TT or phono pre-amp - I think. Can you switch TT leads into phono pre-amp first? If it doesn't change anything try switching phono pre-amp to amp leads next. Have you checked the cartridge/stylus alignment? That would certainly explain the "vinyl only" symptoms...on the other hand if Dylan sounds balanced maybe your system is OK??? Can you listen to the recordings that seemed "imbalanced" on another system? I'll be curious what you find out if you do track down the cause.
This sounds like improper cartridge alignment. Alignment, VTA, azimuth, VTF
and anti skate are fully covered in the archives. These adjustments are critical to balanced playback.
Ghosthouse: i'm not sure what you mean when you say "switch TT leads into phono pre-amp first or switching phono pre-amp leads next"? Do you mean connecting the turntable's rca's into the output of the phono preamp instead of the phono input? Thanks in advance.