Hi,
I think you may have already sent me an email, to which I replied. In any case, the possibilities of #1 or #2 are extremely unlikely. The woofers in the QS8 should not "pop" even if you happened to inadvertently set them to "Large". They should be set to "Small" with an 80-Hz crossover in your Onkyo 805's speaker setup menu. If you used any Onkyo auto-setup mode, turn it off and do it manually.
By all means exchange the left and right surround wires to see if the "popping" noise remains with the left QS8. If the popping noise moves to the right surround QS8, then that will tell you the problem is likely the Onkyo 805's surround amplifier clipping, or a defective left-channel surround amp.
If, on the other hand, the popping noise stays at the left QS8 even when you exchange the surround channel wires, then there may be a defective driver in your left QS8 surround.
Call Axiom's toll-free number and mention the problem, and our service manager will take it from there.
Regards,
