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 was interested in the history of the DXT-Mon pursued - ultimately designed in "competition" to a widely used reference monitor of the same size. The highest quality LS I ever had were compact Focal with Beryllium HT, as a current reference serve me mainly Stax and Audeze headphones with appropriate DIY amplifiers.
After I had been looking for higher quality new speakers for my little "music room" for a while, the finished product fit into my prey 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 entirely according to Alexander's MDF plan. The "leaning" parts were made by a friend of mine 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
The rest of the body I have in turn by a friend with "liquid rubber" paint.


There was some confusion when taking over the DSP data*, as it seems
did not fit - after a few (by the way, always! very fast! answered emails) the error was found and I had the appropriate turnout data (As active hardware serve a DDRC24 and a DIY power amplifier with IcePower modules).

*Note: Biquads were first used for the Mini-DSP-HD, which works internally with 96kHz. The DDRC-24, however, works with a clock 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 some bass boost through the room itself, the LS reach about 45Hz linearly. Equalized by Dirac Live in the bass I miss here no subwoofer, even higher levels stuck the "little ones" easily.
All in all, a speaker that leaves nothing to be desired for me and has far exceeded the set expectations.

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