miniDSP 2x4 HD Boxed USB DAC Digital Signal Processor

I needed to integrate a subwoofer with what are generally regarded as some of the fastest speakers on the planet; Fuijitus Ten Eclipse TD712Z’s on moving to a new house that was far too bright compared to my old house. No easy feat and after much deliberation I chose to try the minidsp 2 x 4 HD. A 70hz low pass filter worked well on the crossover in the subwoofer so I programmed in 48dB/octave 70hz low pass and high pass filters on the 2 x 4 HD, which was straightforward and worked perfectly first time. So the 2 x 4 HD is now functioning as an active crossover between a Naim pre and power amp, and the Naim pre and the subwoofers digital amp. How does it sound, given that it’s undertaking AtoD, applying the crossover filter then DtoA conversion? Utterly fabulous. The subwoofer integrates perfectly with the TD712’s in terms of impulse response and timing, and when DIRAC room correction is applied it really sounds stunning! An absolute bargain if you need something like this.

Helps to sort out bass and speaker settings once you follow through the instructions. It can be money well spent

Very pleased with the flexibility this has added to my setup. Running dual subs it's helped me achieve a nice integration with these which I was struggling to do manually before. I am forever tweaking the system and the dsp box gives plenty of flexibility, measuring with REW as an example and then importing filters is fairly simple, there are many guides knocking around if some pointers are required.

Great bit of kit, has made a massive difference with my 2 subs.

This has been one of the best upgrades to my system for years, forget about upgrading your speaker cables, for the price you paid for them the miniDSP 2x4 HD would make an enormous difference in comparison.

Das Teil ist einfach nur der Hammer,... ich liebe diesen DSP ! Ich habe mit Ihm und REW mit einem kleinen Bassarray alle meine Moden in Perfektion bekommen. Absolut Empfehlenswert !

I'm sorry I didn't get this earlier

Excellent product for multiple subwoofer users in Home Theatre. You need umik 1 mic and REW Software to make this happen.

works

If you have discovered this amazing device, have a use in mind and think you might somehow find a reasonable alternative that is not a POS designed for bad automotive audio then save yourself time and effort and buy it now! I questioned and researched for over a year to find nothing comparable. I found need for a miniature "little black box" multi-channel digital sound processor to use for with the accompaniment system of my player grand piano. My belief that it would be very easy to find because essentially the same circuitry is included in today's "basic" devices was utterly incorrect! My smallish town in the mid-west still--amazingly--has a true "hi-fi" store and even their salesman I've known since the 80s gave me a blank stare when asking about a miniature digital sound processor. My application requires only the basic functions of output channel equalization and input parametric equalization. My audio source is monophonic but the 2x4 nature allows completely independent adjustment of the two input channels which allows separately tailored parametric EQ from the inputs to be applied to the four independent outputs. One input channel has a parametric curve optimized to the single subwoofer channel in its proper space just ahead of the rear leg of the piano with the instrument itself diagonally spaced in the purposely designed band area of a very large room on the lower floor of a big ranch home. The second input channel has very little general parametric EQ but highly tailored EQ curves driving three channels that I call "presence," "depth" and "ambiance" all of which are either very carefully attached to the instrument or directly beneath on the heavy wool Oriental of the sort I consider an absolute sonic necessity outside of a carefully designed concert hall. I've been building and working with audio equipment all of my life and this is the most useful and smooth sounding device I've experienced since my first Heathkit Pro Series component (the awesome preamplifier) c. 1984. Certainly not cheap but considering I paid over $1,000 for a Yamaha DSP-1 in the 1980s it is a fantastic value. Since my system is fully contained to and beneath a physical musical instrument I have absolutely no reason to use the delay and other advanced features. If anything however I somewhat regret not buying the 4 x 8 version. Despite my monophonic input I'm operating six loudspeakers to include two pairs. My corner location has 30' or so of mirrored wall on one wall and another of wood and stone. With a couple more channels I could attempt to play some sonic games to reinforce what I can only call the sonic holograms that find performers I have heard in real life literally in the house. It's the sonic extasy I've sought all my life but never thought I could achieve--much less afford. Yoga beneath the treble section is sublime. Programming via the supplied software is simple and intuitive. The device itself contains the programming instructions for three (at least) system-wide settings that can be changed without direct connection to the computer. I had a problem with the first unit as it utterly refused to maintain connection to my older but top-of-the-line HP laptop. Service and communication was SUPERB! They replaced the original after truly good communication over a few days which seemingly eliminated the computer as the problem. The replacement still experienced communication failure but only rarely--think tens of minutes instead of rarely more than ten seconds--and I was able to properly transfer my settings (created off-line). Very shortly after I got a new laptop (Acer Nitro) and there has never been another communication failure. Operation over the last six months or so has been flawless. I have things power protected but this has been a CRAZY year for storms in southeastern Missouri and the power has experienced numerous "blip outs" and spikes.