Attenuators, Vishay Dale vs Dact? - diyAudio
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Old 10th November 2005, 08:12 PM   #1
Guijs is offline Guijs  Brazil
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Default Attenuators, Vishay Dale vs Dact?

Hello,


I'm looking for a good attenuator for my tube pre-amp project. I was thinking about the Dact CT2 mono, but there ir a Ladder Type with Vishay Dale resistors that looks like very good. Does anyone here ever tryed these against the Dact?

http://cgi.ebay.com/for-ALTEC-Amplif...QQcmdZViewItem


Wich one is better choice? The Dact worth the price?

Thank you.

Guilherme
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Old 11th November 2005, 02:34 PM   #2
Mick_F is offline Mick_F  Germany
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I never tried the DACT but I have the one you found on ebay and it is very good. Others on this forum agree with this point of view

Mick
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Old 11th November 2005, 03:14 PM   #3
Guijs is offline Guijs  Brazil
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Thanks Mick. So no disavantages on this one?
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Old 11th November 2005, 03:16 PM   #4
mr mojo is offline mr mojo  United States
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Guijs,

Hi!

I usually post in the tube section, but I saw your post on the home page when I logged in.

I recently built my first scratch DIY tube amp and struggled with what type of pot/attenuator and which brand.

I don't know what your budget is or how soon you need your attenuator, but I thought I'd give you a heads up on what I used.

I went with a custom attenuator from Shalco-exceptionally high quality and they can be ordered in mono, stereo, log taper, any ohm value and almost any number of steps. They also use precision 1% metal film resistors in a ladder arrangement, are encased in a MU metal shielded can and have solid silver contacts. Rated number of turns is listed over 10 million.

Shalco generally manufactures attenators for military and commercial broadcast/engineering applications-I don't think there is a higher quality attenuator to be had.

I ordered a stereo 500k, log taper, make before break, 30 steps in 1.2db incrments. Cost was @$175 USD, turnaround time was about 4 weeks, no down payment needed to place order.

A mono attenuator would be @ half the cost.

I've been exceptionally pleased with mine and would never use a carbon or plastic pot for volume control ever again-attenuators truly DO make a very large difference in sound quality.

Just my $.02!

Best,
mr mojo
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Old 11th November 2005, 03:54 PM   #5
Guijs is offline Guijs  Brazil
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Mr Mojo,


Thanks for the help! Can you give me a link to this manufacter?
I need two 100k mono attenuators. This price you told me is near of the cost of a Dact Mono.

Guilherme
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Old 11th November 2005, 05:01 PM   #6
mr mojo is offline mr mojo  United States
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http://www.shallco.com/frameset.html

HTH. The folks there were very friendly and knowledgeable.

Best,
mr mojo
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Old 11th November 2005, 05:42 PM   #7
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You could try these guys, if you don't have such deep pockets.http://www.diyfidelity.com.au/index.php?cPath=26
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Old 11th November 2005, 08:12 PM   #8
Mick_F is offline Mick_F  Germany
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Quote:
Originally posted by moreismore
You could try these guys, if you don't have such deep pockets.http://www.diyfidelity.com.au/index.php?cPath=26
That is exactly the same attenuator as the one sold on ebay.

And, no, there are no disadvantages with this one.

Mick
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Old 11th November 2005, 08:18 PM   #9
Guijs is offline Guijs  Brazil
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My doubt "Dact vc Ebay Ladder Type" is because Dact uses SMD components, wich is much better than common solded components. I want to know if is better enough over the Ladder type...
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Old 11th November 2005, 08:22 PM   #10
Mick_F is offline Mick_F  Germany
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"Ladder" refers to the architecture not to the type of resistors used. You can make a ladder-type attenuator using SMD resistors, for example.....

Btw, I doubt that the Dale resistors are worse than any SMD res.

Mick
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