Sound-isolated booths: alternatives to IAC 1200 series?

[Daniel Oberfeld <oberfeld@xxxxxxxxxxxx>]

Dear list,

a happy year 2009 to all of you!

We're currently in the process of moving our department to a different 
building.
In this context we have to purchase four new sound isolated booths for 
psychoacoustics, EEG and other physiological experiments.

Now my question is whether anybody knows an alternative to the 
double-walled IAC 1200 series. We need a sound attenuation of >60 dB at 
frequencies above 250 Hz, a decent isolation against vibration, 
electromagnetic (RF) shielding (for the physiological recordings), and 
of course a silent ventilation system.

I'd appreciate any suggestion because the administration of our 
university is of course not very happy with the IAC price tag...

Kind regards,

Daniel


--
Dr. Daniel Oberfeld-Twistel
Johannes Gutenberg - Universitaet Mainz
Department of Psychology
Experimental Psychology

Staudingerweg 9
55128 Mainz
Germany

Phone ++49 (0) 6131 39 22423
Fax   ++49 (0) 6131 39 22480
http://www.staff.uni-mainz.de/oberfeld/