<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=Content-Type content="text/html; charset=iso-8859-1">
<META content="MSHTML 6.00.2800.1400" name=GENERATOR>
<STYLE></STYLE>
</HEAD>
<BODY bgColor=#ffffff>
<DIV><FONT face=Arial>Hi everyone,</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>Does anybody out there have some schematics for making a
voltage-controlled mixer? I need to build a mixer desk for the dance-band I work
with.</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>I need to have:-</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<OL>
<LI><FONT face=Arial>a minimum of two input signal options - microphone or
line</FONT></LI>
<LI><FONT face=Arial>1 line-output</FONT></LI>
<LI><FONT face=Arial>a minimum of 4 bands of filter control (basic cut and
boost over a band with centre-frequencies of, say, 100Hz, 1kHz, 2kHz and
10kHz)</FONT></LI>
<LI><FONT face=Arial>level control (zero to unity)</FONT></LI></OL>
<DIV><FONT face=Arial>I plan on using MIDI control so the hardware would consist
of:-</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<OL>
<LI><FONT face=Arial>multiple 4-channel sub-mixer units with the above
specification. Each of these units will be potentially capable of being
expanded to 16-channels each</FONT></LI>
<LI><FONT face=Arial>up to 16 sub-mixer units in a system.</FONT></LI>
<LI><FONT face=Arial>1 sub-mixer with only mixing capabilities ie no filter
control and line-in only.</FONT></LI></OL>
<DIV><FONT face=Arial>There will also be a master-mixer which will take the
outputs from sub-mixers and will be used to generate a psuedo-stereo output for
driving the front-of-house amp/speakers.</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>Eventually I hope to implement the MIDI link from the main
controller to the master-mixer over a radio link to allow me to move around the
audience are and adjust the mixers as I go.</FONT></DIV>
<DIV><FONT face=Arial></FONT> </DIV>
<DIV><FONT face=Arial>I would like, also, any advise on a suitable cable for
joining these units together. Ideally the one cable would support the MIDI data
connection, audio output and power (+/-18VDC ?). The intention here is to
minimise the number of cables that need to be laid down when setting up the
band. By using multiple sub-mixers I can place each sub-mixer close to the
signal devices (microphones, DI boxes etc) for the various band sections and
connect them back to the sub-mixer (3 above) before running to the
master-mixer.</FONT></DIV><FONT face=Arial>
<DIV><BR>Best Regards<BR>Laurie Biddulph<BR><A
href="http://www.elby-designs.com">http://www.elby-designs.com</A></FONT></DIV></BODY></HTML>