Behringer DCX2496 - What Volume control?

ark · 10th May 2007, 01:11 AM

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.

janneman · 17th August 2007, 02:42 PM

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

wigginjs · 17th August 2007, 05:40 PM

Wow, sounds like it turns the DCX2496 into a usable piece of equipment for hifi. Kits?

pinkmouse · 17th August 2007, 07:23 PM

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.

janneman · 17th August 2007, 07:26 PM

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

Drew Eckhardt · 17th August 2007, 07:41 PM

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.

SY · 17th August 2007, 08:55 PM

Jan, did anyone ever answer the question at the end of your article? (Rigelian)

janneman · 9th September 2007, 10:49 AM

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...

Jan Didden

janneman · 9th September 2007, 10:51 AM

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!

Mike1234 · 17th September 2007, 08:01 PM

Will you also be offering in-house mods?

10th May 2007, 01:11 AM	#1
ark diyAudio Member Join Date: Dec 2003 Location: Arcata, CA	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.

17th August 2007, 02:42 PM	#2
janneman diyAudio Member Join Date: May 2002 Location: Where Germany, The Netherlands and Belgium meet Blog Entries: 6	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 __________________ /Another new issue: Linear Audio Volume 3!

17th August 2007, 05:40 PM	#3
wigginjs diyAudio Member Join Date: Dec 2003 Location: Columbia, SC	Wow, sounds like it turns the DCX2496 into a usable piece of equipment for hifi. Kits? __________________ The Four Chairs DIY Home Theater

17th August 2007, 07:23 PM	#4
pinkmouse diyAudio Moderator Join Date: Apr 2002 Location: Chatham, England	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. __________________ Al I conceive of nothing, in religion, science or philosophy, that is more than the proper thing to wear, for a while. Charles Fort

17th August 2007, 08:55 PM	#7
SY diyAudio Moderator Join Date: Oct 2002 Location: Austin, TX Blog Entries: 1	Jan, did anyone ever answer the question at the end of your article? (Rigelian) __________________ “Listening to records is like ****ing a picture of Brigitte Bardot.” - Sergiu Celibidache


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

17th August 2007, 07:41 PM	#6
Drew Eckhardt diyAudio Member Join Date: Jun 2003 Location: Menlo Park, CA	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.

9th September 2007, 10:51 AM	#9
janneman diyAudio Member Join Date: May 2002 Location: Where Germany, The Netherlands and Belgium meet Blog Entries: 6	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! __________________ /Another new issue: Linear Audio Volume 3!

17th September 2007, 08:01 PM	#10
Mike1234 diyAudio Member Join Date: Aug 2005	Will you also be offering in-house mods?

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