I am running atlantic technology seakers in my HT. Lately, I am
experiencing an internal rattle on certain frequencies in the signal.
Any clues other than the obvious that something is lose or blown. I
don't overdrive the unit and it's less than a year old.

respond to nmor...@iglou.com

It is likely that something internal is vibrating against the
driver basket. It could be a wire. It could also be a voice-coil
rubbing at the excursion limits or possibly a loose box brace
that is creaking under the internal pressure.

I suggest you get with AT on this. They are a good outfit (I
reviewed their System 270 in a recent issue of The Sensible
Sound) and their customer-service people should be able to give
you some guidance on your problem. Probably, it can be handled
under warranty, so I advise against trying to do any repairs
yourself, unless they authorize it. Their phone or email number
should be included somewhere in the literature that came with
your speakers.

Howard Ferstler
Author of The Home Theater Companion
(Schirmer Books, 1997, 437 pages), and
the upcoming The Digital Audio Music List
(A-R Editions, due out this month).