Behringer DCX2496 - What Volume control? - diyAudio
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Old 10th May 2007, 02:11 AM   #1
ark is offline ark  United States
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Default Behringer DCX2496 - What Volume control?

After mulling over too many crossover circuits and driver consideration I've decided to go digital active and make those changes prior to analog conversion... etc etc.

What I want to know is what are the differences in these multi channel volume controls?

Selectronic has this one:
http://www.selectronic.fr/upload/pro...me_control.pdf

it uses transistors.

then there is the DACT 6 channel attenuator
http://www.dact.com/html/attenuators.html
which is entirely passive.

if I were planning on feeding say.. a SET 45 amp in one channel and a 300 B on another... or used three little digital amp for the time being..

which volume control would be better?
What do the transistors do for that kind of attenuator?

Provided I have the Behringer output stage modded (reference audio mods, or by kit from selectronic) to bring the default output down a little.. which would be better?

advantages of one type over the other?

Much thanks in advance for your input and education here.
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Old 17th August 2007, 03:42 PM   #2
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Hi,

For those people interested in my 6-channel level control mod, I have put together a User Guide and a Construction Guide (to be completed). There is also a picture of the replacement flat cables. You can find both in the 6-channel area on my website.

Jan Didden
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Old 17th August 2007, 06:40 PM   #3
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Wow, sounds like it turns the DCX2496 into a usable piece of equipment for hifi. Kits?
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Old 17th August 2007, 08:23 PM   #4
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It's a very neat piece of engineering, it's a shame we didn't really get a chance to listen to it properly at the UKdiy fest. If I had a DCX, it would certainly be on my list of upgrades.
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Old 17th August 2007, 08:26 PM   #5
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Quote:
Originally posted by m0tion
Wow, sounds like it turns the DCX2496 into a usable piece of equipment for hifi. Kits?

I'm working on a kit, I'll have more details end of the month. Also need to finish the construction guide. Please send me an email so I can mail you directly, if you wish.

Jan Didden
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Old 17th August 2007, 08:41 PM   #6
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Multi-channel pots do not track well and you really need a remote control so my answer would be "neither."

Something VCA or relay-selected resistor based with remote and a dB attenuation display would be great. Exactly like Jan's - that's a nice piece of enginering.
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Old 17th August 2007, 09:55 PM   #7
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Jan, did anyone ever answer the question at the end of your article? (Rigelian)
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Old 9th September 2007, 11:49 AM   #8
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Quote:
Originally posted by SY
Jan, did anyone ever answer the question at the end of your article? (Rigelian)
I assume you mean the end of the passive article? Yes, lots did! The first one got a PCB IIRC. I must say I myself had to look it up. Knowing most of Jack Vance's characters, this one had escaped me...

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Old 9th September 2007, 11:51 AM   #9
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BTW, finally Ward and I got most of the parts and PCB's for the DCX2496 Active Level Control kit together. Ward will be able to start shipping kits as of 15 September or so.

I have put up the info on how to order the kit on my web site.

Thanks again everyone who expressed interest for prodding me on.

Happy Building, and, the most important part, Happy Listening!
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Old 17th September 2007, 09:01 PM   #10
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Will you also be offering in-house mods?
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