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Old 25th November 2002, 09:13 PM   #1
cowanrg is offline cowanrg  United States
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Default adding balanced output to cd player

is there a way to add balanced outputs to an existing cd player? its an NAD 502 and just has rca analog outs. any way to easily add balanced connections?

i can post pics of the board if necessary. hopefully it will be an easy fix.
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Old 25th November 2002, 09:16 PM   #2
UrSv is offline UrSv  Sweden
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Yes. Build a BoSoZ and put it inside the player.

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Old 25th November 2002, 09:31 PM   #3
skaara is offline skaara  Slovenia
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I dont know if youll be able to put them in cdplayer..

With that you add another stage, which will additionally degrade sound, I dont recommend you to do this unless you are using very long wires to your preamp/amp.
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Old 25th November 2002, 09:41 PM   #4
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Another one: Get a decent output transformer (e.g. Sowter 8347 DAC Interface Transformer) and connect it directly to the DAC. I/V conversion is done by a simple resistor if necessary. No additional circuitry, no power supply and de-coupling as a plus...
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Old 26th November 2002, 03:14 AM   #5
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For a relatively compact solution Analog Devices offer the SSM2142 and Texas Instruments the DRV134/135 balanced line drivers. The SSM2142 and the DRV134 are available in 8-pin DIP.

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Old 26th November 2002, 07:06 AM   #6
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The '2142 does degrade the top-end a bit.

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Old 26th November 2002, 08:40 AM   #7
halojoy is offline halojoy  Sweden
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Originally posted by Jocko Homo
The '2142 does degrade the top-end a bit.

So does BOSOZ (a bit, or 1.5 bit)
If left to chose.
I'd go for SSM2142, nine times out of ten.
A very high quality audio IC!
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