I found it
<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by PhilD:
Apologies for the delay Albie, but I had to venture into the loft to find it. Here it is, the speaker is about 5" diameter, and it seems to use a bunch of tunnels in the box, kind of like the Wave technology Bose have.
http://www.h2southtexas.com/temp/sub1.jpg
http://www.h2southtexas.com/temp/sub2.jpg <HR></BLOCKQUOTE>