dsmdavid

I recently came into ownership of a set of Altec Lansing ADA 885 speakers w/Subwoofer.

I have extensive knowledge in the car audio field, yet I am perplexed as to this issue...

Upon setting up the speakers, they worked fine, great sound, true bass, everything was going fine. Then the sub woofer stopped working. I turned off the speakers, left them alone for a couple hours (thinking maybe I was jamming to loud and sent the sub into a protection mode). When I turned them back on at a very, very low volume, the sub still cut's out (after about 20 or 30 seconds), and doesn't come back on until I turn them off for an hour or two and come back to another 20 or 30 seconds of clean bass only to be disappointed when it cuts out again.

I am using the speakers with an analog cable right now, and my question is if I swap to a Digital S/PDIF cable would this possibly remedy the sub cutting in and out (due to faulty wiring inside the sub itself w/regards to the analog interface), or are the two completely unrelated at all and I just have a defective sub woofer?

Thanks in advance!