I have several 5.1 and 5.2 channel JBL systems in my home. Some are running from a satellite TV cable box and others are running directly from a CD. All of these are connected to various JBL sub-woofers, a few JBL 18"erz, and one sub-woofer running a 2206. These are powered by Dayton plate amps - typically 1000 watts at 8 ohms, or from Crown bridged power amps.
I have several newer and older high end receivers (Denon, Oynko), and one pre-amplifier (Adcom). I have switched receivers, switched CD players, switched JBL sub-woofer, switched plate amplifiers and THEY ALL DO THE SAME THING.
That would be, when played at normal or lower volumes, the sub-woofer signal periodically drops out completely. Then, if I turn the volume up to a loud level, the sub-woofer signal comes back, however. Adjusting the sub-woofer volume up to full tilt relative to the other 5 channels in the receivers or pre-amp does help reduce the occasional signal drop out but it still happens.
YEAH, THIS HAS DRIVEN ME NUTS FOR SEVERAL YEARS NOW.....
Why does the sub-woofer signal drop out and is there any way to stop it?