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Building a Hushbox

 (Page 1)

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The following procedure was written by Kal (the webmaster).

If you’re at all concerned about the noise that a projector will add to your home theater, consider building a hushbox for your ceiling mounted projector.

Whether you require a hushbox is very much a personal preference. Some projectors are fairly quiet to begin with (ex: Sony 10xx, Barco 70x, 80x, 120x, etc.) while some others are noisy enough that pretty much everyone considers a hushbox to be a requirement (ex: Sony 1292, NEC XG).

Regardless of the noise level produced by your projector, a hushbox will only help to increase the dynamic range of the audio portion of your home theater. A good thing all around. If you’ve spent a considerable amount of money on the audio side of your home theater, you’ve probably already realized that a hushbox is more or less a requirement to maintain that level of audio quality.

The author of this procedure (Kal the webmaster) does not recommend fan mods in order to reduce the noise level of a projector – doing so only creates more heat which will shorten the life of your projector. You’re best to build a hushbox and vent it properly to keep the electronics cool.

Below are instructions for building an effective, inexpensive solution that will not only quiet your projector, but cool it better than having no hushbox at all. A cooler projector will last longer and drift less over time.

Since every projector model is slightly different, these instructions only give general guidelines showing a successful solution instead of giving exact measurements. Use your own measurements to build a hushbox that matches your projector’s size and cooling requirements.

A big thanks to Guy Kuo of Ovation Software for some of the original ideas and principles that were employed in these instructions.

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