Standing in an 8Hz 115dB Soundfield

CEDIA 2006

Standing in an 8Hz 115dB Soundfield

By John Atkinson • Posted: Sep 19, 2006

I couldn't resist posting one more photo of Bruce Thigpen's fan-driven infrasonic subwoofer, this time showing the drive-unit in operation. Loaded with an infinite baffle—it is in the next room—it fires into a foam-lined sub-chamber, which low-pass filters the residual fan noise, leaving just the awesome infrasonics to pressurize the room next door. Because the fan is providing the main motive power, just 30W of audio signal was required to create an spl of 115dB at 8Hz!

Comments

Submitted by Bill Leebens on September 20, 2006 - 5:10am.

Undoubtedly, John, if it throbbed like an old Leslie speaker you would've mentioned that. ;->Cheers, Bill

Submitted by JIm Tavegia on September 22, 2006 - 8:47am.

This is absolutely when the quietness of your TT platter DOES matter. Better bearings is better science.

It was a beneficial workout

Submitted by fahadyre on December 18, 2011 - 11:17am.

It was a beneficial workout for me to go through your webpage. It definitely stretches the limits with the mind when you go through very good info and make an effort to interpret it properly
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Submitted by DUP on September 23, 2006 - 9:14am.

Those wires are on THE CARPET!!!!!!!! Where are the cable lifts, Myrtle Blocks...thing looks just so un audiophile, needs a replacement AC cord.

Submitted by Donald N. on September 23, 2006 - 4:12pm.

This sub has my interest peaked.

Submitted by Ramesh on October 11, 2006 - 5:24am.

I simply cannot resist this. The day I do this by DIY, I will be GOD.