>>anywhere in the high volume range the woofers go into a constant shake/shudder.

We should make sure that your amp is not clipping at high volume, since that can be bad for the speakers (and for any new speakers you get). Can you describe what happens at high volume a bit more (particularly if the sound changes) so we can be sure ?

If it's just the woofer cones flapping around because of very low frequency sound then no problem... although I think some of the older Yamaha receivers had a low frequency cutoff ("high pass") which to control woofer flap. It only cut off the frequencies below your normal bass notes so didn't noticeably affect the sound.

Don't write off the CD changer until you check to make sure the cable is good, and make sure the changer is plugged into the same AC outlet as the receiver at least for a trial run.


M60ti, VP180, QS8, M2ti, EP500, PC-Plus 20-39
M5HP, M40ti, Sierra-1
LFR1100 active, ADA1500-4 and -8