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<DIV><SPAN class=380133003-22042005>not sure, but it looks like they are klark
technics... the two below them look like krohn-hite 3202 LP/HP/BP filters, nice
but no Q unless you make a feedback loop amplifier.</SPAN></DIV>
<DIV><SPAN class=380133003-22042005></SPAN> </DIV>
<DIV><SPAN class=380133003-22042005>the pyramid of signal generators is most
impressive, though.</SPAN></DIV>
<DIV><SPAN class=380133003-22042005></SPAN> </DIV>
<DIV><SPAN class=380133003-22042005>MB</SPAN></DIV>
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
<DIV class=OutlookMessageHeader dir=ltr align=left><FONT
face=Tahoma>-----Original Message-----<BR><B>From:</B>
owner-synth-diy@dropmix.xs4all.nl
[mailto:owner-synth-diy@dropmix.xs4all.nl]<B>On Behalf Of
</B>SRRecords@aol.com<BR><B>Sent:</B> Thursday, April 21, 2005 5:38
PM<BR><B>To:</B> analogue@hyperreal.org<BR><B>Cc:</B>
synth-diy@dropmix.xs4all.nl<BR><B>Subject:</B> [sdiy]
columbia/princeton<BR><BR></FONT></DIV><FONT id=role_document face=Arial
color=#000000>
<DIV>Hello</DIV>
<DIV> </DIV>
<DIV>Can ANYONE tell me the make/model of the filters seen in this
photo:</DIV>
<DIV> </DIV>
<DIV><A
href="http://www.columbia.edu/acis/history/cpemc.html">http://www.columbia.edu/acis/history/cpemc.html</A></DIV>
<DIV> </DIV>
<DIV>(third photo down)</DIV>
<DIV> </DIV>
<DIV>just diagonal to the UPPER LEFT of Virgil deCarvalho's head - two white
boxes with sliders, one on top of the other....? I once knew, but now
the name escapes me.</DIV>
<DIV> </DIV>
<DIV>Thanks a bunch,</DIV>
<DIV> </DIV>
<DIV>J Mask</DIV></BLOCKQUOTE></FONT></BODY></HTML>