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Old 30th August 2014, 02:02 AM   #1
Bigun is offline Bigun  Canada
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Default DSP vs no DSP ?

I'm very interested in this DSP approach to room correction and tone control. I use single Full Range drivers so no X-over interest.

But the thought of putting an ADC-DSP-DAC into my signal chain after spending time and effort on an 'audiophile' amplifier worries me.

Has anybody done a comparison between a piece of wire and the ADC-DSP-DAC into a single full range driver to assess how transparent this is (or is not) ?

Thx
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Old 30th August 2014, 02:36 PM   #2
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If you've gone down the path of full-range drivers with no crossovers, I find it a bit puzzling you'd be interested in DSP equalization. But, anyways, you're asking a question regarding subjective performance ("transparency") that only you can answer.

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Old 1st September 2014, 01:44 AM   #3
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All speakers need EQ. For no other reason, they exist in rooms. I was bothered by the miniDSP ADC>DSP>DAC chain, so I went with the nanoDIGI which is all digital 24/96>32-bit>24/96. You get to choose your own DAC's. I do FAST, so I am bi-amped, but that is another issue.

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Old 1st September 2014, 01:53 AM   #4
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What Bob says, the biggest limitation of the miniDSP stuff is the very basic ADC/DAC that's built into it. Going the all digital route completely removes this, especially if you are using an ESS DAC with their jitter removal tech.

If done like that it will be completely transparent.
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Old 1st September 2014, 02:48 AM   #5
Bigun is offline Bigun  Canada
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All digital is attractive, but I also like to listen to my FM analogue radio.

Bob - when you say you were 'bothered' by the chain, was it based on actual listening experience ?
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Old 1st September 2014, 03:15 AM   #6
Davey is offline Davey  United States
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Quote:
Originally Posted by Bob Brines View Post
All speakers need EQ.
Bob
Some people might argue with you on that.

Anyways, the OP hasn't specified a particular miniDSP unit he's interested in. There are different ADC/DSP/DAC chains depending upon whether it's the 2x4 unit or 2x8 unit. Many have noted considerable subjective differences between these two.
But as has been noted, you don't necessarily have to utilize the onboard ADC/DAC's and there is also a couple of digital-only units.

"Transparency" is highly nebulous and really difficult to quantify.

Dave.

Last edited by Davey; 1st September 2014 at 03:18 AM.
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Old 1st September 2014, 03:16 AM   #7
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FM radio is like listening to 256 MP3's. SQ and MP3 is an oxymoron. But hey, I've been known to listen to SiriusXM over BlueTooth from my iPhone.

The DAC's in the miniDSP are not the greatest implementation. My Topping D20's are bettter, if not great. Yes, there is an improvement (IMO, of course).
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Old 1st September 2014, 03:26 PM   #8
Bigun is offline Bigun  Canada
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I'll grant that many FM channels have been sacrificed on the alter of youth - compression and lots of it, gotta have loud. But there are many exceptions, one local station has preserved a higher quality experience (it's in French so I can't understand the adverts - that helps too !).

OK - so the conclusion from Bob is that the native DACs are not the greatest implementation.

Are there any others out there who have done the simple evaluation of DSP-in and DSP-out ??
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Old 2nd September 2014, 10:39 AM   #9
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I think it has the tendency to suck the life out of the music, but i understand that this is opinion and not something i can prove.
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Old 2nd September 2014, 04:41 PM   #10
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Is this your direct experience or just something you 'heard' - ideally I'm looking for direct experience not rumour.
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