MiniDSP vs DCX2496 vs DCX2496-Modded vs DEQX - diyAudio
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Old 3rd November 2010, 06:48 AM   #1
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Default MiniDSP vs DCX2496 vs DCX2496-Modded vs DEQX

Hi guys,

Thought you may want to know this. We compared the following last weekend in Australia:

- Behringer DCX2496
- Behringer DCX2496, modified
- Behringer CX2310
- DEQX HDP-3
- MiniDSP (Gainphile's)

The system used was Acapella Violon, Cary signature monoblocks, etc. High res enough?

I honestly thought I could not differentiate any of the products which says alot about MiniDSP being the cheapest of the bunch. But this is what the host had to say:

The comparisons were made with very close level matching.


Red trace: MiniDSP, Blue trace: DCX2496. Again, near perfect level matching. Note that the MiniDSP drops off sharply with a brick wall filter after 20kHz. I felt that the MiniDSP sounded better - with a clearer top end, lower noise floor, and better bass definition. I was able to pick the MiniDSP 3/3 in a blind test. I am pretty sure I could have made it 5/5 or 10/10 but the others thought that I had proven my point that I wasn't bluffing when I said I heard the difference .
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Old 3rd November 2010, 07:06 AM   #2
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How did it compare to the DEQX HDP-3 which unless I'm doing a Murray Walker is the only one using FIR filters?
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Old 3rd November 2010, 07:46 AM   #3
minidsp is offline minidsp  Hong Kong
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Wow.. You guys are having quite some fun down under! :-)

Neat to hear that you're able to line up a blind test with so much gear in one room... Must have been a fun day!

In the end, we're certainly glad to hear that you're finding the miniDSP fitting your expectations.. :-)

Did you initially intend to send us a screenshot of a measurement as part of your post? (Red trace/blue trace) It doesn't show up for some reason...
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Old 3rd November 2010, 09:22 AM   #4
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Quote:
Originally Posted by KenTripp View Post
How did it compare to the DEQX HDP-3 which unless I'm doing a Murray Walker is the only one using FIR filters?
We had hoped that it would be the star of the day. However upon adjusting levels etc. it played up and did not want to make sound. And when it did we clearly hear the tonal balance was difference! Not sure what happened then but we did not get a good valid result.
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Old 3rd November 2010, 09:27 AM   #5
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Quote:
Originally Posted by minidsp View Post
Wow.. You guys are having quite some fun down under! :-)

Neat to hear that you're able to line up a blind test with so much gear in one room... Must have been a fun day!

In the end, we're certainly glad to hear that you're finding the miniDSP fitting your expectations.. :-)

Did you initially intend to send us a screenshot of a measurement as part of your post? (Red trace/blue trace) It doesn't show up for some reason...
Fun we did have !

Yes this was my intended attachment. It shows how close we level matched each other. Crossover was 80hz and 607hz 4th orders.


Click the image to open in full size.

Above was the Standard DCX2496 vs. MiniDSP.
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Old 5th November 2010, 04:18 AM   #6
minidsp is offline minidsp  Hong Kong
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Cool, thanks for the measurement.

I wonder where the difference at what seems to be the crossover point (607Hz cut off though hard to read so couldn't be sure...) is about....

I can't see with the res of that picture what scale we're looking at on the amplitude, but it's quite odd that a similar implementation on a DCX and miniDSP would have a different overall response. (mic position didn't change I'm guessing).

Do you see what I mean?

As for the DEQX, we'd also be interested in seeing how it compares... :-) The advantages of FIR filtering and all the advanced features it provides would be very valuable to evaluate... When is the next "Australian-DSP-shoot-out" planned?
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Old 6th December 2010, 02:03 AM   #7
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Default Comparation PART II

We did another comparo between MiniDSP, Behringer DCX2496, and DEQX. This time we use Unity Horn speakers.

Again, I cannot pick any difference from those units, except DEQX where it seems it's not properly cofigured (?). Although the rest do pick up difference and prefer the sound of MiniDSP.

Paul Spencer had done a great write up:
Red Spade Audio: Test 2: Antripodean's unity horn system

Also:
http://www.stereo.net.au/forums/show...r-DBT-GTG-pt-2
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Last edited by gainphile; 6th December 2010 at 02:09 AM.
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Old 6th December 2010, 04:20 AM   #8
minidsp is offline minidsp  Hong Kong
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@ Gainphile and the "Aussie Team"

Nice write up and glad to hear that miniDSP was performing so well in your tests! :-)

Alright, down to this magic DEQX @ 2K a pop... How come it's not behaving? Is the unit faulty or is there a complex setup involved maybe? (PS Pardon my ignorance on their units.. I really don't know how they are setup and used .. :-) )

We'd love to hear the improvement on these 300dB/oct filter, linear phase filters, FIR filters and all the goodness it comes with...

While in a "complete" different league than miniDSP (20 X the price), we're are just curious as to which of the feature they provide would really be worth implementing.. i.e. keeping cost low but yet providing even more features on the miniDSP platform...

anyway, thanks again for sharing your findings..
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Old 10th December 2010, 04:13 AM   #9
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Quote:
Originally Posted by minidsp View Post

Alright, down to this magic DEQX @ 2K a pop... How come it's not behaving? Is the unit faulty or is there a complex setup involved maybe? (PS Pardon my ignorance on their units.. I really don't know how they are setup and used .. :-)

We'd love to hear the improvement on these 300dB/oct filter, linear phase filters, FIR filters and all the goodness it comes with...
It's $6k when new. I did not personally set the unit so not really sure what's wrong. We know that the response was audibly rolled off. To me all the settings, menu, etc. looks very complex.

I suggested an "operator error" and that was not taken too kindly

Earlier in the year I listened to a pair of Legend Tikandis which uses the DEQX and noticed no issues whatsoever.
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Old 10th December 2010, 05:28 AM   #10
minidsp is offline minidsp  Hong Kong
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Does it make breakfast with Waffles and coffee for that price? ;-)

Anyway, if it's indeed a tough piece to configure, we understand that it takes time. We look forward to hearing your comments the day you get it to work. Although very hard to compare such platform to our low cost platform, our main interest would be to know if which one of the feature would be of real interest to focus on.
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