Need to convert single ended input to balanced input...how?

Does whatever gear you are hooking up have a provision for SE in/balanced out? If it does I would probably just use that.

If your gear does not have that there are basically 2 ways to do this, both can be bought off the shelf (yaay!) 

You can do what you want easily with active (GENERALLY opamp-based) stuff, or with transformers. Active solutions are less expensive but require a power supply and introduce their own noise, transformers are nearly ground loop proof. 

Here you go for opamps:

http://www.mcmelectronics.com/product/555-8485

For transformers you have a few more options... 

Edcor:

http://www.edcorusa.com/products/45-s2s10k-600t.aspx

Will require wiring the balanced connection yourself, and reduces gain by a bit BUT can drive long cables.

http://www.edcorusa.com/products/46-s2s10k-10kt.aspx

Also with balanced connection yourself, but only a nominal reduction of gain. Not so hot for longer cables, but 1-2m should be OK.

If you have a lot of money to throw at the project, Jensen makes outstanding transformers... 

http://www.jensen-transformers.com/pixxpoxx.html

Can you provide some more detail?

I'm a bit confused. You say "source input" but when you're talking about a source, you're talking about outputs, not inputs.

Are you saying you're wanting to take an unbalanced source output and convert it to balanced to drive a balanced input?

se

Quote:

Originally Posted by elrod-tom 

Yes Steve, you're right...I meant that I want single ended output converted to balanced to drive a balanced input. 

Ah, ok. Figured as much but just wanted to be sure.

The cheapest way would be the little Edcor boxes, though get the 600:600 not the 10k:600. Mount them as close as you can to the source with the shortest cable.

The most expensive way would be the Jensen boxes, specifically the DM2-2RX.

In the middle, if you don't mind a little DIY, use a pair of CineMag CMOB-4 line output transformers.

se