Axiom Home Page Forums General Discussion Home Theater Brief Review of My New System

Most people aren't aware that they are exposed to hazardous limits on a daily basis. We can always debate what's hazardous of course as there isn't a general concensus yet.

John Galt,

The phenomenon you are referring to of the sub feeding back to an M80 is in fact possible with any sub-woofer / front channel combination that are both capable of reproducing very low frequencies. In order for this to occur you must be using the high level input on the sub. You would be using the sub output from your receiver so this could not occur. What happens is if someone were to say slam a door hard enough to move air in the room and thereby cause the M80 driver to physically move this movement would create a signal out the speaker input (a motor is a generator when physically moved). This signal would be transmitted to the sub and the sub would reproduce it. The air moved by the sub would then physically move the M80 woofer again if they were very close to each other and around the circle we go.

Ahhhh....the mystery is finally revealed. Thanks, Ian.

Thanks for the rundown Ian, makes perfect sense. It's a shame that review is out there, I've seen is discussed in a few places and it definitely seems in indicate that this is an issue particular to your products rather than something that would happen under the right conditions with any system.

I suppose this means that I'll have to get back on the horn shortly to have an EP 600 sent this way.

Pretty darn interesting thread.... and nice review. A 'lil over my head, by interesting none the less.

I especially liked the review of the Yam V3800. That AV was actually on my list to review....