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miniDSP Low cost, modular Digital Signal Processor (DSP) kits for the DIYer from miniDSP.

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Old 8th August 2018, 12:20 PM   #1
mart34 is offline mart34  England
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Location: England
Default Nanodigi vs 2x4 HD


Iím considering a minidsp, main purpose is for the subsonic filter and a low pass filter for subwoofer operation.

I donít want the standard minidsp 2x4, because I donít like the idea of ADC-processing-DAC, due to impact on sounds quality, even though Iím sure this will be fine for my purposes if used for the subwoofer only. I know that once I get my hands on one of these units, Iím going to enjoy playing with it, so want to future proof myself and consider putting HPF on my floor standing speakers (and trying eqíing full range, more for fun, than for gain)

Iím therefore considering the minidsp 2x4 HD or the Nanodigi. Iíd take a digital in, from various sources, USB from Laptop (my primary music listening source) and maybe a digital in from a TV.

My understanding is that the nanodigi has all the benefits of the 2x4 HD ?, just instead of analogue outs only, it has digital outs only. If this is the case, Iím tempted with the nanodigi, as I can take digital from sources, pass through nanadigi, one digital out straight to my hifi amplifier for driving floorstanders (even if straight pass through eg no eq). Then another digital out, through a higher quality (than minidsp 2x4HD) external DAC (maybe $100 DAC), over to the subwoofer.

This to me appears to be the best route for sound quality purposes, but so long as the nandigi has all the features of the minidsp 2x4 HD. My concern is itís the minidsp 2x4 board and not the minidsp 2x4 HD inside a nanodigi. Iíd like all the benefits of the minidsp 2x4 HD, including ability to upgrade to Dirac Live at later date.

Also, the nanodigi is specified with SPDIF outputs, so I can tie this into a Digital Coax Input on my hifi amplifier ?

Any comments or advice on the above would be appreciated.

Many thanks

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Old 8th August 2018, 01:39 PM   #2
Davey is offline Davey  United States
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Join Date: Dec 2001
Location: Bremerton, WA.
Those two units are quite a bit different from each other.
The 2x4Hd unit is a more advanced DSP and supports FIR filtering...among other things. Also it allows USB streaming.
The nanoDIGI is a 2x8 unit.

I suggest to take a closer look at the capabilities of both and see which one best fits your intended usage.

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Old 10th August 2018, 08:04 PM   #3
mart34 is offline mart34  England
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Join Date: Jul 2004
Location: England
Thanks Dave. Totally got this all wrong. Think the 2x4 HD suits my needs, even if I use it only for the subwoofer.
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Old 29th March 2019, 10:18 PM   #4
dtaylo3 is online now dtaylo3  United States
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Join Date: Nov 2004
Location: coloradao usa
U have USB in on 2x4. Nano Digi would require a dac or two or three after it with RCA/SPDIF in, and an amplifier channel for each.
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