Ed,
Unfortunately I don'tknow that there is a commercial mixer that is as simple
as what we've made here for this exact purpose.

What you want can be done with 4 varriable resistors )pots),  4 fixed resistors
and the necessary jacks and plugs.  This is a "passive' mixer, meaning it has
no amplification built in, thus it must work into powered speakers.

It will reduce the total max volume you can get from the speakers by a few
DB, but this rarely should be a problem.

If you have any building experience or have a friend who has, E.G. basic
soldering, dreilling holes in a box, and the like, it's very easy to duplicate 
this
device.

If interested, let me know and I'll bung up a brief text
discription of how it goes together for you.

Again, sorry I don't know where you can just buy one.

Tom Fowle
smith-Kettlewell RERC.

On Wed, Mar 24, 2010 at 02:23:31PM -0400, Edward Przybylek wrote:
> Hi all,
> 
>  
> 
> I currently have two sound cards installed in my computer.  I'd like to
> combine the outputs of the two cards so that both cards can be played
> through a single set of speakers.  I'm told the best way to do this is to
> use an audio mixer.  My problem is that I'm beginning to run out of desk
> space and that's why I'm hoping some really small mixers exist.  This is a
> fairly simple application that requires minimal complexity so I really don't
> need anything like a professional unit or one that has the capability to
> perform any and all audio mixing functions.  All I need to do is combine two
> stereo outputs into a single set of speakers while maintaining reasonable
> sound quality.  If anyone knows of a very small and simple mixer that will
> serve this purpose, I would greatly appreciate hearing about it.  Thanks a
> lot.
> 
>  
> 
> Take care,
> 
> Ed Przybylek
> 
>  
> 
> 
> 
> [Non-text portions of this message have been removed]
> 

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