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Subwoofer Upgrade

Posted by Coastman (A) on January 22, 2008 at 09:35:43

I am looking for suggestions for a subwoofer upgrade. My room is approx. 20' x 24'. I am using an Onkyo TX-SR701 receiver that is a couple of years old, but which does the job. It has a dedicated subwoofer output and internally adjustable frequency cutoffs. My speakers are older Cambridge Soundworks speakers, and the current sub is a Cambridge Soundworks Powered Sub II. The reason for upgrade is that it seems that on DVD movie soundtracks, the sub is oftentimes overdriven to the point where the speaker cone rattles or bottoms out. It is almost as if the sub is getting way too much signal.

Now, I know I am not running the sub too "hot". In fact, its volume control is usually set at "1" or "2", out of a possible "10". The internal level on the receiver is also not set too high. I have all speakers set to produce a 75 dB SPL with the receiver test tone, using the Radio Shack meter. I have checked and rechecked all settings, and they appear to be proper.

I would note that on TV programming (DirecTV high def) the sub works appropriately. The issue in just on DVD movie soundtracks.

Suggestions?

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