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Masterclass


diyAudio Member

Registered: February 2014
Location: Guildford
Posts: 2
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Infa bass speaker I believe will reach 5Hz. Exhibition in London in the 70's and articles in Hi Fi magazines.

3D microphone has 8 mic's.
Date: Sun March 2, 2014 Views: 757
Filesize: 27.2kb, 347.0kb Dimensions: 2500 x 1875
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Keywords: 3_D_Graham_Holliman_microphone_001
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Zero D
diyAudio Member

Registered: August 2009
Posts: 1,235
Sat May 24, 2014 7:50am

Hi, & thanx for posting the pics of the 3D Mic & the Infra Bass. I've been interested in the IB since i first read about it in a hifi mag in the 80's. I bough the plans for it from Wilmslow audio, which i still have. I never got round to building one though ! Is the IB still working ?

I wasn't aware of the 3D Mic until now. That seems quite remarkable too.

I noticed that your name is Stephen Holliman, so i'm "presuming" you are related in "some" way. If you are, in what way ? Did you inherit both items, or aquire them in some other way ? If you could tell us more about GH's life & work etc, that would be appreciated.

I've contributed to several threads on here about GH's IB. If you do a search on here you should find them.

Regards
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