Diwa:

Welcome & thanks for coming over from AVS. Again I get no sound out of the first video but the last 2 are OK.

I've never experienced anything like this with my pair. As chesseroo said, sounds like some kind of signal input problem or a loose component. Did you try it at various volume levels with the input cable disconnected?

I run my EP400s at about 12:30 on the Volume Control that give me music peaks at around 90 Db. While the internal DSP should protect the sub, it is unwise to run it (or any component) flat out, IMO.

Hopefully the wizards at Axiom will be able to help...

TAM