Hi Sri,
I don't think we've heard from you for a while. Keeping busy?
This will allow you to listen to all the channels
simultaneously (cacophony in my opinion, but hey, I am not the one
listening!)
It's not so much that I want to listen to multiple streams of music
at once, it's more that I want to hear the various sound prompts
from the computers whenever they happen, audio from videos like
YouTube, and the background sound therapy I have on (special white-
noise at low volume) while listening to music (I don't always use
the same machine for playing music or video, and I have more desktop
than laptops these days).
I can do it now, but it means 3 sets of speakers crowding my desk,
and then physically unplugging and plugging cables if I want to tune
in my short-wave radio onto a decent set of speakers, and stuff like
that.
Thank you for the detailed description of how to build all this. I
used to love doing this stuff when I was kid - but I honestly don't
know if I would ever have the time or patience to build this now
(aside from work, I'm also renovating a 100 year old house), so I
respectfully express my gratitude Sri, but decline your generous
offer.
There must be something ready made from somebody that does something
this simple? 4 or more small audio input jacks, with some measure of
volume control for each, to produce one "mixed" level of audio
output to one set of speakers.
I appreciate your reply, and sorry if I haven't been more clear on
what I was looking for. Thanks.
Scott,
On Friday, December 28, 2007 2:12am, Sri Amudhanar <[EMAIL PROTECTED]>
said:
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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