Unbalanced to Balanced

mcash257 · 13th October 2004, 09:25 PM

I'm looking for an inexpensive way to convert an unbalanced (consumer audio) signal to a balanced one for input into my car's head unit (there is no aux. in, I'm hijacking the CD changer cable). I've seen several commercial units, but they were all very expensive. If a simple circuit diagram is floating around that would do the job, well then that's what I'm interested in.

Cheers,
Matt

Netlist · 13th October 2004, 09:41 PM

Hi Matt and welcome.

I'm sure you'll find something
here

/Hugo

EUVL · 13th October 2004, 11:52 PM

A simple and inexpensive way if that is what you want :

http://www.schuro.de/Daten/Burr%20Brown/DRV134.pdf

Single chip (< US$ 4), 4 x 9V batteries (to give +/- 18V), nothing else.

Alternative -- use a single-transistor phase splitter with coupling caps.

Have tried both. Works fine.

Patrick

mcash257 · 14th October 2004, 12:03 AM

Is there some standard that my equipment will (probably) adhere to that you guys know of, or is a bit of testing needed? It's a standard saab head unit ('98 900SE) connecting to a clarion 625 6 disc changer.

13th October 2004, 09:25 PM	#1
mcash257 diyAudio Member Join Date: Oct 2004	Unbalanced to Balanced I'm looking for an inexpensive way to convert an unbalanced (consumer audio) signal to a balanced one for input into my car's head unit (there is no aux. in, I'm hijacking the CD changer cable). I've seen several commercial units, but they were all very expensive. If a simple circuit diagram is floating around that would do the job, well then that's what I'm interested in. Cheers, Matt

13th October 2004, 11:52 PM	#3
EUVL diyAudio Member Join Date: Oct 2003	Balanced ouput A simple and inexpensive way if that is what you want : http://www.schuro.de/Daten/Burr%20Brown/DRV134.pdf Single chip (< US$ 4), 4 x 9V batteries (to give +/- 18V), nothing else. Alternative -- use a single-transistor phase splitter with coupling caps. Have tried both. Works fine. Patrick

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13th October 2004, 09:41 PM	#2
Netlist diyAudio Moderator Join Date: Jan 2003	Hi Matt and welcome. I'm sure you'll find something here /Hugo

14th October 2004, 12:03 AM	#4
mcash257 diyAudio Member Join Date: Oct 2004	Is there some standard that my equipment will (probably) adhere to that you guys know of, or is a bit of testing needed? It's a standard saab head unit ('98 900SE) connecting to a clarion 625 6 disc changer.

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