This is where isolation, again, does nothing to filter, inhibit, airborne resonances. Couple your CDP with Audio Points, the rack, and your subwoofers. Star Sound Technologies sells their Sistrum Subwoofer stand. Call Robert, and tell him your problem. I guarentee he will be able to help you. You'll solve the skipping and get much better sound. I have my subwoofer, too, 6" away from my rack. No skipping; ever, no matter what the volume. Of course, I have everything coupled. Good luck.
warren
warren