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Old 20th March 2006, 09:48 AM   #1
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Default deq2496 and/or dcx2496

A lot has been written about these unit but something is troubling me. Although the possibilities of tweaking are endless and really bang for you buck I am not sure about its 'high end' quality. I do own both and use them only digitally except for a modified AKM DAC output stage(original is crap!)on the dcx. I also have a nice analog active LR-filter with opa2134's. If I use a simple sony CD-player I find the analog way to have more fine-detail than the digital way with same cd-player(digital out).
Anybody else having this experience within a high-end system (scanspeak revelator and Aleph amps)?
I hear people saying there is no degrading in fine detail but their system isn't that fantastic so to speak...
Please share your experiences with me
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Old 20th March 2006, 10:04 AM   #2
kepa1 is offline kepa1  France
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Hello,

I've always used the digital in so can not compare.

In my opinion, the stock DCX output has a good sound but a bit metal like, not very natural. On the other hand, it acts has a sound precessor and a DAC, you can do a lot with it.

You can even tweak it if you're not satisfied with the sound.

I'm about to instal a new clock inside it (after having gone for passive outpu), I'll wait and hear, then
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Old 20th March 2006, 10:23 AM   #3
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thanks kepa1
I use a modified outputstage on the dcx and still mis fine detail and this is independant from any settings used.
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Old 20th March 2006, 06:36 PM   #4
AndrewT is online now AndrewT  Scotland
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Hi,
I used a DCX for a short while, into Michell Alectos and Cyrus power feeding Acoustic Energy AE1s.

I felt the deep bass was down and it sounded like a treble filter was set to on. Not just fine detail missing.

I wondered if the active drive to the treble unit was suppressing a treble peak that otherwise would artificially raise the apparent treble output, but quite clearly all the sparkle and life was gone when active.

I will be using the DCX as a tool to design an analogue active filter for my speakers. Then I can compare performance and even think about mods to both input and output stages.
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Old 20th March 2006, 06:46 PM   #5
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I'm using a DCX with the anologue input. When I first put it in circuit I was blown away with all the tweaks and sound shaping I could now do. Then when I got down to "normal" listening I was disappointed at how much detail was being compromised. After playing around with the options I now only use the DCX for eq'ing the bass up to 140Hz and tweeking the treble over 7KHz and using my main speaker direct not using the DCX. I know this isn't ideal but IMO using the DCX for the extremes is a decent compromise.

Ive decided not to mod the DCX yet as I have doubts whether I would use it to drive my main speakers as they sounds so good the DCX could only compromise the sound.

Kev
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Old 21st March 2006, 06:46 AM   #6
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thanks for your answers.
I am particulary interested in loss of detail in the digital algorithms/hardware of the units (ofcourse in comparison with nice analog active filters), my analog stages are really fine now and the AKM DAC's are ok too.
So anyone using a modified dcx with or without a deq on a high end modern amp/speaker set?
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Old 22nd March 2006, 08:30 PM   #7
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Quote:
Originally posted by aaronboumans
thanks for your answers.
I am particulary interested in loss of detail in the digital algorithms/hardware of the units (ofcourse in comparison with nice analog active filters), my analog stages are really fine now and the AKM DAC's are ok too.
So anyone using a modified dcx with or without a deq on a high end modern amp/speaker set?

Hi

Behringer offers lots of function for money, but soundwise they are not among worlds' best

Jitter and analogue output stage are the first 2 areas to concentrate on.

best
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Old 23rd March 2006, 06:43 AM   #8
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Hi Guido,
I agree, but I allready replaced the analog output stages so my main concern would be jitter. I have the feeling I will not get this right.... because somehow in the digital stage things are not getting any better.
I boroughed a nice sa7001KI sacd player and used this with my analog LR filter; really incredible, unbelieveble. So much more detail and dynamics. Maybe I should go this way and in order to flatten the room I SHOULD flatten the room, really dedicate the room for listening (I can do this ) Oh what a nice hobby.....
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Old 23rd March 2006, 06:58 PM   #9
mm2 is offline mm2  Germany
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Default 3 Areas

Hy Guido,

Quote:
Jitter and analogue output stage are the first 2 areas to concentrate on.
don't forget the psu,
I think psu is very important for jitter and analogue output stage

best
mm˛
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Old 23rd March 2006, 07:38 PM   #10
Coolin is offline Coolin  Netherlands
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Default Re: 3 Areas

I agree about the PSU...

What Andrew T. said about the high pass filter is correct. THis hapens sometimes on my unit as well. I believe its the PLL on teh recieving chip that does this incorrectly. Someone has posted a fix on this issue by using a newer chip that also lets you use higher sampling rates 192 kHz i thought.

Look here for this and other mods.
http://freerider.dyndns.org/anlage/HiresAudio_E.htm
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