Attenuators, Vishay Dale vs Dact?

Guijs · 10th November 2005, 07:12 PM

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

Mick_F · 11th November 2005, 01:34 PM

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

Guijs · 11th November 2005, 02:14 PM

Thanks Mick. So no disavantages on this one?

mr mojo · 11th November 2005, 02:16 PM

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

Guijs · 11th November 2005, 02:54 PM

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

mr mojo · 11th November 2005, 04:01 PM

http://www.shallco.com/frameset.html

HTH. The folks there were very friendly and knowledgeable.

Best,
mr mojo

moreismore · 11th November 2005, 04:42 PM

You could try these guys, if you don't have such deep pockets.http://www.diyfidelity.com.au/index.php?cPath=26

Mick_F · 11th November 2005, 07:12 PM

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

Guijs · 11th November 2005, 07:18 PM

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...

Mick_F · 11th November 2005, 07:22 PM

"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

10th November 2005, 07:12 PM	#1
Guijs diyAudio Member Join Date: Aug 2005	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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11th November 2005, 01:34 PM	#2
Mick_F diyAudio Member Join Date: Jun 2005 Location: Cologne	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

11th November 2005, 02:14 PM	#3
Guijs diyAudio Member Join Date: Aug 2005	Thanks Mick. So no disavantages on this one?

11th November 2005, 02:16 PM	#4
mr mojo diyAudio Member Join Date: Jun 2005 Location: Iowa	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

11th November 2005, 02:54 PM	#5
Guijs diyAudio Member Join Date: Aug 2005	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

11th November 2005, 04:01 PM	#6
mr mojo diyAudio Member Join Date: Jun 2005 Location: Iowa	http://www.shallco.com/frameset.html HTH. The folks there were very friendly and knowledgeable. Best, mr mojo

11th November 2005, 04:42 PM	#7
moreismore diyAudio Member Join Date: Jun 2004 Location: Toronto	You could try these guys, if you don't have such deep pockets.http://www.diyfidelity.com.au/index.php?cPath=26

11th November 2005, 07:18 PM	#9
Guijs diyAudio Member Join Date: Aug 2005	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...

11th November 2005, 07:22 PM	#10
Mick_F diyAudio Member Join Date: Jun 2005 Location: Cologne	"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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