Need Schematic : -10dB to +4dB Converter/Line Amp
« on: April 07, 2007, 09:55:28 AM »
I have a -10 CD player and would like something to convert the signal to a balanced +4 signal.

Does anybody have a schematic or know of an affordable product?

Thanks,

Douglas


Need Schematic : -10dB to +4dB Converter/Line Amp
« Reply #1 on: April 07, 2007, 10:53:28 AM »
Would a passive transformer based device help with the level?

Douglas

rlaury

Need Schematic : -10dB to +4dB Converter/Line Amp
« Reply #2 on: April 07, 2007, 11:48:11 AM »
Here's a solution I designed. It uses the DRV134 and the OPA134.
They work great for CD players, vintage single ended effects like
the old DBX units, single ended consoles, ect. The pot gives you
6 to 16 dB gain adjustment. There is also polarity flip provisions.
I have tested these driving 400 feet of cable and they work great.
I also have the balanced to un-balanced receiver for +4 to -10 inputs.
I build these 25 at a time for stock. PM me if your need some.



and the schematic:

http://www.nashaudio.com/XLR/BalDrvSch_Web.pdf
When all you have to work with is a hammer,
everything looks like a nail.

peterc

Need Schematic : -10dB to +4dB Converter/Line Amp
« Reply #3 on: April 07, 2007, 03:38:20 PM »
Hre's something that will do the trick:

http://1176neve.tripod.com/id6.html

PCB as well. Right click & save as for full res graphics

Peter
If opportunity doesn't knock, build a door.


 

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