Axiom Home Page Forums General Discussion Home Theater epic 80-600

Actually 90 Hz is pretty much perfect for Axiom center and surrounds; maybe there are a bunch of Axiom owners over in the Yamaha design center

after all the minor adjustments i got to watch the LOTR twin towers......the fronts and the center sounded great but my concern was with the sub....to me it appeared as if there was something loose in the sub and after making the boom sound something would "ratte or vibrate" inside...i have the sub set up at around 9 o clock position.......afraid to go further up......what might be the cause or is it just me....

It could be the sub but it's more likely to be something in your house rattling. Get some bass heavy music, turn it up until you hear the rattle on every beat, and walk around to find out exactly where it's coming from. I had to fix shelves, heating ducts, one water pipe and a couple of picture frames before I got all the rattling under control. The bottles on the bar still rattle occasionally...

Not saying it *isn't* the sub (could be something wrong with it) but normally it's something else...

In reply to:

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The bottles on the bar still rattle occasionally...

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That wouldn't happen if they weren't all empty

there are all kind of things in the room....we haven't completly unpacked yet......but the noise seems to come from the sub itself !!!!!

RE. The reason titanium and aluminum are chosen as driver materials is that they're light and rigid. Why would you want them to soften up? It would muddy the sound. If you're referring the the other parts of the speaker breaking-in -- the surround and the spider -- then those are the same regardless of the actual cone material.

I guess I really wasn't sure of what 'break-in' is supposed to do. I apparently misspoke by using the 'softening up' commment. Here's an excerpt from the review that sparked my comment:

http://www.onhometheater.com/product/20020801.htm
(okay, explain how to paste this as a link. Rookie move)

...following, as it did, on the heels of the Thiel PowerPoints, which cost $1300 each, and the superb Polk LSi15-based system, which costs about twice as much as the Axioms.

And, I must confess, the transition was not a painless one. The Axioms definitely have a break-in period during which the tweeter seems quite rough and the woofers seem decidedly lightweight. But over time that began to change, and it wasn't long before I began to notice how much I was enjoying films and music through the system. ...

http://www.onhometheater.com/product/20020801.htm

It's true that a new speaker system will sound different over time, but it has much more to do with the listener's perception of the sound changing over time than it does with the speaker actually undergoing physical changes over time. It makes sense when you think about it. A new speaker in your own home will have a sound that you are not used to. As you become accustomed to the sound, the way you perceive it changes.

This is similar to something I call the "barking dog phenomenon." Many of the homes on my block have dogs, most of which will bark from time to time when they are outside in their yards. I barely notice it when they bark since I'm so used to hearing it. Occasionally, a new or visiting dog will bark and I really notice because it's not something I hear regularly. It's not any louder than the other barks, it just doesn't sound the same as the barks I'm used to hearing. My brain is more acutely aware of that new bark since it hasn't been filed into the "normal" category. If that dog stays in the neighborhood, over time its bark will be filtered into the background noise along with the others.

Re: over time its bark will be filtered into the background noise along with the others.
The same thing applies to wives/girlfriends (if you can get away with it)!

LOL! (but don't tell anyone I laughed)