I used to do a lot of electronics a long time ago. Here is a simple way
to do what you want to do:
Buy some 4.7 Kilo Ohm resistors (say 10) by mail order. Solder one end
of 5 resistors together and hook this common point to input of the left
channel in you amplifier.
Do the same for the right channel. Now each free end of the resistors
becomes an independent input for any source you choose. Take left and
right channel pairs and hook them up to shiny gold plated RCA
connectors, and mount the connectors on the terminal box. You can build
this passive mixer for a few bucks. Purists consider this type of mixers
the best because not being active (no transistors) they don't contribute
distortion. It does cut the max volume down a bit, but when did you ever
play full blast? If you are picky, reduce the resistor to 1K Ohm.
Of course you also need a ground line (or return path for each channel
(for each source from each connector)). If you are working with only a
few sources the wiring doesn't get too complicated.
You control the master volume from the main amplifier. You control the
individual sources from the volume control of the sources themselves (if
you use speaker or headset outputs of the sources). So you have all the
flexibility. This will allow you to listen to all the channels
simultaneously (cacophony in my opinion, but hey, I am not the one
listening!), just like the volume controls on your computer based mixer
with CD, AUX, MIC, MIDI and PCM inputs.
If you are seriously interested and verbal description is not working,
express your displeasure and I will make a drawing.
Have fun.
Sri Amudhanar
Maxys Corporation
Ashburn, VA
Scott Cadillac wrote:
Hi Robert,
Thank you for your time on the search. I think what I need is something more
like this unit:
http://www.radioshack.com/product/index.jsp?parentPage=search&summary=summary&cp=&productId=2104026&accessories=accessories&kw=audio+mixer&techSpecs=techSpecs¤tTab=summary&custRatings=custRatings&sr=1&features=features&origkw=audio+mixer&support=support&tab=techSpecs
Where all the inputs are active at the same time, not just a single one switched on. I'd
have to get line adapters and a mess of cables though - I guess I was just hoping for
something that was "ready made" for the small stereo jacks and impedance rating
that computers and small devices like the iPod output.
I miss Radio Shack. They were my favorite store when I was kid, but they left
Canada a few years ago. Unfortunately the online Radio shack doesn't ship to
Canada directly. The chain that replaced them him is sub-par and don't carry
all the same stuff.
Oh well, I appreciate the effort, I'll keep searching. Thank you.
Scott,
On Thursday, December 27, 2007 10:07pm, Robert Garcia <[EMAIL PROTECTED]> said:
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