DXT-MON active Mini-DSP a

Matthias DXT-MON

Fully active, with the DDRC-24 of Mini-DSP and Ice-Power amplifiers

 

Some time ago infected with the DIY-LS virus, I followed the development of the DXT-Mon with interest - ultimately designed in "competition" with a widely used reference monitor of the same size. The highest quality LS that I have owned so far were compact Focal with beryllium HT, the current reference for me is mainly Stax and Audeze headphones with corresponding DIY amplifiers.
After I had been looking for new, high-quality speakers for my little “music room” for a while, the finished product fit exactly into my loot scheme.
When it finally became clear that Alexander also released the DSP data for common systems for his projects, there was no stopping him, because I wanted to build actively right from the start. The 9,5l version was built.

Since I lacked a counterweight to the rather unusual front in the standard form, I sat for a long time and figured out the case shape. Soon a nice piece of solid wood was found for the front, 

I built the rest of the MDF according to Alexander's plan. A friend of mine made the "crooked" parts on the CNC milling machine, which made things very easy. 

DXT-MON active Mini-DSP CNC


The solid wood part I have repeatedly sealed with hard wax oil, the
I had the rest of the body painted with "liquid rubber" by a friend.


There was some confusion when taking over the DSP data*, as it seems
nothing wanted to fit - after a few emails (always answered very quickly! by the way) the error was found and I had suitable turnout data (a DDRC24 and a DIY power amplifier with IcePower modules are used as active hardware).

*Note: Initially, biquads were used for the Mini-DSP-HD, which works internally at 96kHz. The DDRC-24 works with a clock rate of 48kHz => the biquads did not fit. The error could then be corrected very easily.

The result inspires me every time again!

I can listen to music for hours without being fatigued, the spatial image is very accurate and dissolves completely from the speakers.
With a little bass boost through the room itself, the LS reach about 45 Hz linearly. With Dirac Live equalized in the bass range, I don't miss a subwoofer, and the “little ones” can easily cope with higher levels.
All in all, a speaker that leaves nothing to be desired for me and has far exceeded the set expectations.

 

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