Balanced Line Driver

Jerry Parker · 1st April 2003, 04:08 AM

I use a consumer reciever for my home theater needs. I use a Behringer feedback destroyer pro, however to act as a parametric equilizer for my subwoofer. I also use a prosound amplifier to power the subwoofer.

The output coming from my reciever is not very loud, and the level drops because of the equilization from the Behringer. So I want to make a line driver of a fixed gain of say 12dB to allow more output, and balance the line for the prosound equipment.

http://www-s.ti.com/sc/psheets/sbos094/sbos094.pdf

I looked at this balanced line driver, and thought it looked pretty much exactly what I need, except it only provides 6dB of gain. Is their any way I could cascade two of them to provide more gain? Its a limited bandwidth application, so sound quality isnt TOO critical, but I don't want it to alter the sound in any way.

I used its unbalanced brother the opa134 in a headphone amplifier designby Chu Moy over from www.headwize.com with excellent results.

Does anyone have a skematic on how to make one? Thanks!

Sparhawk · 1st April 2003, 05:32 PM

Maybe these might provide a starting point:

http://sound.westhost.com/project51.htm

http://sound.westhost.com/project87.htm

1st April 2003, 04:08 AM	#1
Jerry Parker diyAudio Member Join Date: Apr 2003 Location: Tulsa, OK	Balanced Line Driver I use a consumer reciever for my home theater needs. I use a Behringer feedback destroyer pro, however to act as a parametric equilizer for my subwoofer. I also use a prosound amplifier to power the subwoofer. The output coming from my reciever is not very loud, and the level drops because of the equilization from the Behringer. So I want to make a line driver of a fixed gain of say 12dB to allow more output, and balance the line for the prosound equipment. http://www-s.ti.com/sc/psheets/sbos094/sbos094.pdf I looked at this balanced line driver, and thought it looked pretty much exactly what I need, except it only provides 6dB of gain. Is their any way I could cascade two of them to provide more gain? Its a limited bandwidth application, so sound quality isnt TOO critical, but I don't want it to alter the sound in any way. I used its unbalanced brother the opa134 in a headphone amplifier designby Chu Moy over from www.headwize.com with excellent results. Does anyone have a skematic on how to make one? Thanks!

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1st April 2003, 05:32 PM	#2
Sparhawk diyAudio Member Join Date: Sep 2002 Location: Ontario, Canada	Maybe these might provide a starting point: http://sound.westhost.com/project51.htm http://sound.westhost.com/project87.htm

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