<span style='font-family:Verdana'><span style='font-size:12px'>Hi,<br />
<br />
I took part in a part in an installation based on David Tudor's rainforest which used transducers attached to various objects. In this case there were 8 objects all metal. We went to a scrap and picked out various pieces, all were hung from the ceiling with cables to let them ring freely. The loudest was an 8 footx3 foot steel kitchen counter top which responded the most musically without much encouragement and sounded like a big reverb. I did some trials with applying a transducer with a fixed pitch signal to various materials. I found most of them harsh. It gave me a nice sense of how different materials filter and disperse the sound in different ways. I like the work Mark Bain has done with doing things to buildings that he probably shouldn't. I cant remember the type of transducer but it was kinda creamy coloured smoke alarm lookin thing.<br />
<br />
<br />
Macdara <br />
<br />
<p style="margin:0px; padding:0px;" >
</p>
<blockquote style="border-left: #ccc 1px solid; margin: 0px 0px 0px 5px; padding-left: 5px" type="cite">
<p style="margin:0px; padding:0px;" >
<span style="font-family: Verdana"><span style="font-size: 12px">----- Original Message -----</span></span></p>
<p style="margin:0px; padding:0px;" >
<span style="font-family: Verdana"><span style="font-size: 12px">From: michael trommer</span></span></p>
<p style="margin:0px; padding:0px;" >
<span style="font-family: Verdana"><span style="font-size: 12px">Sent: 12/29/11 05:55 PM</span></span></p>
<p style="margin:0px; padding:0px;" >
<span style="font-family: Verdana"><span style="font-size: 12px">To: microsound@microsound.org</span></span></p>
<p style="margin:0px; padding:0px;" >
<span style="font-family: Verdana"><span style="font-size: 12px">Subject: [microsound] Transducers as speakers</span></span></p>
<br />
<div>
<font size="4"><font face="Calibri, Verdana, Helvetica, Arial"><span style="font-size: 11pt">Hi all...<br />
<br />
I was wondering if anyone has had any experience using transducer-type speakers.<br />
I’m planning on using them to generate low frequencies, including infrasound, for a gallery-based installation.<br />
<br />
Any info regarding how different materials (e.g. drywall, wood/cement floors, etc.) respond with respect to loudness and eq, power requirements etc. would be useful.<br />
<br />
Fwiw, here are some of the speakers I’ve been looking at:<br />
<br />
<a href="http://www.soliddrive.com/solid-drive.html">http://www.soliddrive.com/solid-drive.html</a><br />
<a href="http://www.woweeone.com/index.php">http://www.woweeone.com/index.php</a><br />
<br />
Cheers (and happy new year)...<br />
<br />
michael<br />
<br />
<br />
<br />
....................................<br />
<br />
<a href="http://michaeltrommer.blogspot.com/">http://michaeltrommer.blogspot.com/</a><br />
<a href="http://soundcloud.com/sans-soleil/">http://soundcloud.com/sans-soleil/</a><br />
<a href="http://michaeltrommer.bandcamp.com/">http://michaeltrommer.bandcamp.com/</a><br />
<a href="http://www.myspace.com/mtrommer">http://www.myspace.com/mtrommer</a></span></font></font><br />
</div>
</blockquote>
<p style="margin:0px; padding:0px;" >
</p>
<br />
</span></span>