Adding Volume controls to DAC output?

Badge · 8th January 2011, 05:39 PM

I need information on adding a volume control for each channel of a DAC. It is a solid state unit with RCA outs. Thanks.

SoNic_real_one · 09:57 PM

Cheap:
Amazon.com: Koss VC20 Volume Control: Electronics
Amazon.com: Cables To Go - 03182 - 3.5mm Stereo Female to RCA Male Y-Cable: Electronics
Expensive:
http://www.amazon.com/Sumiko-Pro-Jec...527367&sr=1-14

Badge · 8th January 2011, 11:01 PM

What I would like to do is add one to each channel and I am wondering what value pot would be best. This would be a hard wire install.

SoNic_real_one · 8th January 2011, 11:39 PM

You need to provide more information than "It is a solid state unit with RCA outs"...

Badge · 9th January 2011, 12:16 AM

It is a Peter Daniel NOS DAC. I would guess the output impedence is around 50 ohms and close to the two volt out standard.

SoNic_real_one · 01:08 AM

Then a 100-200 ohm would be all right... Lower is better for longer connections.
I wasn't kidding with the headphones volume - is low impedance, therefore lower thermal noise, lower capacity influence, lower interferences from outside EMF...

wwenze · 9th January 2011, 05:16 AM

Do consider: DAC chip -> volume control -> buffer -> connection to outside

8th January 2011, 05:39 PM	#1
Badge diyAudio Member Join Date: May 2004 Location: Oregon	Adding Volume controls to DAC output? I need information on adding a volume control for each channel of a DAC. It is a solid state unit with RCA outs. Thanks. __________________ The freaks stick together, they are a tight old crew

8th January 2011, 09:53 PM	#2
SoNic_real_one diyAudio Member Join Date: Jan 2008 Location: Virginia	Cheap: Amazon.com: Koss VC20 Volume Control: Electronics Amazon.com: Cables To Go - 03182 - 3.5mm Stereo Female to RCA Male Y-Cable: Electronics Expensive: http://www.amazon.com/Sumiko-Pro-Jec...527367&sr=1-14 Last edited by SoNic_real_one; 8th January 2011 at 09:57 PM.

8th January 2011, 11:01 PM	#3
Badge diyAudio Member Join Date: May 2004 Location: Oregon	What I would like to do is add one to each channel and I am wondering what value pot would be best. This would be a hard wire install. __________________ The freaks stick together, they are a tight old crew

9th January 2011, 12:16 AM	#5
Badge diyAudio Member Join Date: May 2004 Location: Oregon	It is a Peter Daniel NOS DAC. I would guess the output impedence is around 50 ohms and close to the two volt out standard. __________________ The freaks stick together, they are a tight old crew

9th January 2011, 01:05 AM	#6
SoNic_real_one diyAudio Member Join Date: Jan 2008 Location: Virginia	Then a 100-200 ohm would be all right... Lower is better for longer connections. I wasn't kidding with the headphones volume - is low impedance, therefore lower thermal noise, lower capacity influence, lower interferences from outside EMF... Last edited by SoNic_real_one; 9th January 2011 at 01:08 AM.


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8th January 2011, 11:39 PM	#4
SoNic_real_one diyAudio Member Join Date: Jan 2008 Location: Virginia	You need to provide more information than "It is a solid state unit with RCA outs"...

9th January 2011, 05:16 AM	#7
wwenze diyAudio Member Join Date: Mar 2008	Do consider: DAC chip -> volume control -> buffer -> connection to outside

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