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Old 15th August 2006, 01:54 AM   #1381
GHM is offline GHM  United States
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Default What would you chose?

I'm planning to have my noble pot in the Audio Sector integrated changed to a 24 ladder stepped resistor control. Specifically a Scott Endler stereo attenuator. I've been told the 4k ohm might be the one to go with. The other choice is a 20k ohm unit. Which one do you guys suggest? My input impedance will be between 15 and 30 ohms...thanks to the buffer.

Thanks for any advice.
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Old 15th August 2006, 02:33 AM   #1382
Peter Daniel is offline Peter Daniel  Canada
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The pot used in an Integrated amp is 25k.

If Scott claims that 4k sounded the best, you may try that value, especially when buffer has very low output impedance. Otherwise, 10k or even 20k would be probably more suitable.

You can read about my experiments with passive volume controls here: http://www.diyaudio.com/forums/showt...538&highlight=

The most recent one is getting closer to completion. Control interface was developed by Veteran:

Click the image to open in full size.

Click the image to open in full size.
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Old 15th August 2006, 03:30 AM   #1383
jleaman is offline jleaman  Belgium
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Peter the buffer you are selling, the one that we are currently are talking about with in the last few post's will it work with the aleph series amps ? Ie Aleph Mini 's or others ?

Thanks

Jase
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Old 15th August 2006, 03:45 AM   #1384
Peter Daniel is offline Peter Daniel  Canada
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Yes, that buffer should work well with all amps, as the output impedance is 6ohm only.

The buffer should be installed on source output though.
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Old 15th August 2006, 03:51 AM   #1385
jleaman is offline jleaman  Belgium
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Quote:
Originally posted by Peter Daniel
Yes, that buffer should work well with all amps, as the output impedance is 6ohm only.

The buffer should be installed on source output though.

Could i use it between source cd player and Amplifier ? I want to use it as a buffer with a nice pot. ie a small simple volume pot. I'm using one now as a passive pot but want to see what a buffer sounds like with out causing to much distortion.

Jase

Is there a way to get a balanced buffer in any way ? Would there be difference ?


Would i use it before the volume pot or after ( sorry just added that question )
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Old 15th August 2006, 04:11 AM   #1386
Peter Daniel is offline Peter Daniel  Canada
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I had very good results with buffer installed directly at DAC output and the switching attenuator directly at amp's input (one IC only)
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Old 15th August 2006, 04:57 AM   #1387
karma is offline karma  Canada
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i already have the buffer, and it still sounds great.
i would like to get my hands on the passive volume control
when its finished

i like the display.
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Old 15th August 2006, 08:37 AM   #1388
GHM is offline GHM  United States
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Thanks Peter..for the info! Man..that volume control looks sweet! Every time I turn around you've got something new out. It seems I'll never be able to keep up!
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Old 15th August 2006, 06:33 PM   #1389
jleaman is offline jleaman  Belgium
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Quote:
Originally posted by Peter Daniel
I had very good results with buffer installed directly at DAC output and the switching attenuator directly at amp's input (one IC only)

Do i need to buy 2 of these or one ? Ie 1 Board will do both channels..?

All i need to add would be a transformer ?

Jase
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Old 15th August 2006, 07:42 PM   #1390
Peter Daniel is offline Peter Daniel  Canada
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A kit includes two boards, so one set is good for stereo, two sets neded for balanced setup.

All you need is transformer indeed (plus input/output connectors)
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