MiniDSP 2x4 HD, a USB DAC and DSP in a low cost package powered by a powerful Sharc 400MHz floating point DSP

Product Information

For multichannel system (E.g. 5.1/7.1) or a surround application where multiple speakers are spreadout around the room, use the 90deg file and point the UMIK-2 at the ceiling. So unlike many AV products that resample everything to 48 kHz, here we have end to end sample rate of 96 kHz (my guess). Bandwidth is in excess of 35 kHz.

Digital Audio Processor — Flex based on the I/O configuration selected. No Dirac Live license for default configurationminiDSP products are audio processors, with two or more audio input channels and two or more audio output channels. Inputs and outputs might be digital or analog, depending on the specific product. Typical applications include:

NOTE: The UMIK-1/2 are measurement microphones approved by Dirac Research. Knowing the major effect a wrong calibration/measurement would have on the final results of Dirac Live tuning, we strongly recommend that you select a UMIK-1/2 microphone together with your platform for a plug&play experience leading to best results. Any issues related to 3rd party microphones such as ASIO/USB audio driver incompatibility/Latency problems or incorrect calibration process will not be under our support structure by our support team.

Sophisticated Room Correction

Can I use the digital SPDIF output from Digital Out 1&2 into a DAC and use the built in analog Out3 for the sub at the same time? Flex Eight: IIR (10bands/outputs) + FIR (Stereo bank on input @ 2048taps for impulse response correction) PC Setup: SoundblasterX G6 DAC -> JDS Labs Atom Headphone Amp -> Sennheiser HD560s & AKG K702 & Hifiman HE4XX & NAD HP50 & Sennheiser HD600 all EQ'd to Harman Curve. IEM: TRUTHEAR x Crinacle Zero. The Flex Eight has USB audio, S/PDIF (RCA and optical) and Bluetooth (LDAC/aptX) stereo digital inputs. An OLED front panel display and volume control/encoder knob provides easy control. Last but not least, it is easily software-upgradable with Stereo Dirac Live® for full range correction (20~20kHz), the world’s premiere room correction system. INDIA: Avenue Sound specializes in performing custom installations and integrations of Audio/Video and Home Automation Solutions for Residential, Commercial and Marine Landscapes.

With multiple digital inputs and eight unbalanced analog output channels, the miniDSP Flex Eight can implement active speakers up to stereo four-way. Flexible 2x8 signal routing supports many other configurations such as two-way, three-way and multiple subwoofers. As always, a full suite of miniDSP’s tried and proven audio processing functionality is included: FIR filters and parametric EQ on the input channels, and parametric EQ, crossovers, advanced biquad programming and delay on each output channel. After getting used to the basics of in-room measurement with the app note UMIK-1 setup with REW , you may want to perform some more advanced measurements. In this app note, we will explain some techniques that will help with your active loudspeaker design. We will assume that you're already up and running with the UMIK-1 and REW. Did you also test the second output? People seem to have meassured significantly worse performance.

I alternated between Coax S/PDIF input and USB although performance is the same in both. Here is our dashboard: For stereo system (e.g. 2ch dirac live, single speaker measurement), use the 0deg file and point the UMIK-2 at the speakers Audiophile performance with very low noise floor and distortion (SNR @128dB(A), THD+N @ -111dB (0.0003%) I am amazed once again! End to end performance this good? Remember this is the performance of ADC and DAC combined. And we still manage to have distortion at < -110 dB (18+ bits). It is safe to say that the miniDSP UMIK-1 omni-directional USB microphone has become the non-plus-ultra for affordable yet highly accurate acoustic measurement. The USB-calibrated UMIK-1 provides low noise while being easy to use. Thanks to the USB interface and the unique calibration files provided with it, you will be ready to conduct your first measurement and make recordings within a few easy steps.