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Old 31st January 2013, 03:11 PM   #1
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Default Step Attenuator

Hi guys!

I need a good stepper attenuator.
Preferably more than 23 positions, with non-metallic resistors (better carbon or wirewound).
I have just tried a chinese audiometric.com but it broke immediately.
Not Elma unless it's already mounted, even only 23 positions. And not DACT.
Please if possibile better ladder type 50KOhm stereo logarithmic.

Thanks.
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Old 31st January 2013, 03:31 PM   #2
Loren42 is offline Loren42  United States
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Gold Point: Prices

That is the only one I know of, but it is 23 positions as well.
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Old 31st January 2013, 04:19 PM   #3
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Curious why not Dact?.
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Old 31st January 2013, 04:47 PM   #4
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A second vote for Gold point. I bought mine with the SMD resistors though you can roll your own.
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Old 31st January 2013, 06:02 PM   #5
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Acoustic-Dimension, high-end audio and components for tube audio

potentiometers, switches and attenuators homepage

http://www.percyaudio.com/Catalog.pdf page 14 PDF TKD stepped attenuator

http://www.khozmo.com/

Good luck.

Last edited by merlin el mago; 31st January 2013 at 06:06 PM.
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Old 31st January 2013, 09:48 PM   #6
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Micheal Percy stocks a 45 position 2 deck Shallco switch. The Shallco part is physically huge.

Wirewound resistors are metallic. Carbon film parts require hand matching. Non-metallic, non-inductive, and 1% tolerance are what you get with Caddock resistors.

Perhaps a good off the shelf volume control, with an "infinite" number of positions, is what's needed. PEC hot molded carbon parts match that description and they are reasonably priced.
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Old 1st February 2013, 09:01 AM   #7
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Why do you need more than 23 positions? I used 12 for a while when I made my own, since they're easily available. And since I built it I could chose the values in the range I listened most to.
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Old 1st February 2013, 09:44 AM   #8
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http://www.ebay.co.uk/itm/Valab-23-S...item416fded76b

Anything wrong with this Valab one? It's a ladder type (2 resistors at a time). They also have a SMD one with Vishays, but don't say if it's ladder. Anyone tried these two?

Valab 23 Step Attenuator Potentiometer 100K Stereo Log | eBay
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Old 1st February 2013, 10:31 AM   #9
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Thanks to all!

Quote:
Originally Posted by merlin el mago View Post
I have found interesting the 41 position Shalko but it's not clear what type of resistor they use. I hope not metallic. After the 46 positions square at 179 with Cadoc resistors seems very good, maybe the best.
What do you think? Who is the best?

Bye!
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Old 1st February 2013, 01:08 PM   #10
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Shalco is the best if you can afford it.
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