Other "room correction devices" simply adjust amplitude response – uneven output at different frequencies – to offset room modes. But they don't address phase or group-delay timing issues that exist in all real-world speakers.
DEQX processors are unique because they first address the shortcomings of the speaker via direct measurement and then apply corrected digital filtering. Once the speaker is working accurately the HDP-EXPRESS and HDP-3 measure again and provides room compensation for your newly-corrected speakers.
Think of them as Pre-Amp Processors that measure your speakers and apply sophisticated correction filters. There are two ways to DEQXify. DEQX Inline™ works with your stereo amplifier and speakers as a complete package, also called a passive setup. In a typical audio system, you might use the six available DSP channels to optimize a 1-way, a 1-way plus sub(s), a 2-way, or a 2-way plus sub(s) system.
A popular home theater setup is a single DEQX Inline to integrate, correct and time align one or a pair of subwoofers with main Left and Right speakers, and then adds room compensation and Preference EQ. A remote control for a 3-band equalizer with one fully parametric band adjustable across ten octaves makes fine-tuning easy.
DEQX Inline's powerful DSP technology is transparent to the speaker's internal crossover and measures the cumulative output of your speakers and corrects for amplitude balance (frequency response), phase, group-delay and timing errors thus vastly improving the immersive experience.
When you DEQXify and lower intrinsic distortion and add room compensation the presentation changes in an instant as the sound becomes startlingly more coherent. Youll experience a surprising sense of realism that makes suspending disbelief and fully engaging with music or video easy.
DEQX XS-1 USB Audio Board
DEQX XS-1 24/192 Asynchronous USB board.
This digital input board allows you to connect your DEQX directly to your Windows or Mac-based music servers.
If you use a music server, this is the best sounding way to get sound into your DEQX!
USB Board Features:
- 16/44 - 24/192 Asynchronous
- No 5v power connection to computer; powered internally from ultra-clean DEQX power supply.
- I2S interface to eliminate conversation to SPDIF and reduce jitter.
- Interdependent regulated clocks.
- No drivers required for Macintosh OSX.
- Windows Drivers supplied for XP, Vista, Windows 7, Windows 8 32 and 64 bit.
- DEQX HDP firmware update supplied on disc.
- Easy to install, just one plug.
Need more bass?
A popular way of configuring DEQXs active crossover options is to simply add one or two subwoofers to existing speakers. All can be calibrated and time aligned with room calibration.
Going active option:
HDP5 also offers full 3-way active crossover features not offered by sister products PreMate and PreMate+.
Upgrade your speakers to another level of performance now or in the future using HDP-5s HD-Active crossover outputs that introduced a new generation active speaker regime. The three sets of active outputs; bass, mid and high, drive separate amplifiers each for bass, mid and tweeter drivers.
Choose the best amplifier suited for bass, mids and high frequencies. For example, a priority for bass is high power. The midrange driver needs moderate power but good detail. While Tweeters may only need 10 watts of rich detail where even tube amps and A-Class amps are affordable.
Professionals have used active speakers for decades because they deliver high dynamics with lower distortion and greater accuracy than passive speakers. HDP5 new generation HD-active regime improves on traditional analog and DSP active crossovers with steep linear-phase crossover filters that incorporate individual driver calibrations. This preserves each drivers linearity, or native resolution, by better quarantining frequencies to its comfort zone.
DIY speaker design was never like this! HDP5s 3-way active crossovers allow active 2-way speakers to be integrated with subs, or 3-way speakers can be implemented actively using custom designs or upgrading existing passive speakers to active.
HDP5 and its DEQX-Cal software provide the same measurement features that the best speaker designers use. DEQX can directly compensate what's going wrong so that what you hear is as close to the original source as possible.
DEQX-Cal is half a million lines of software designed by DEQXs award-winning engineers over fifteen years and provides DIYs with a risk-free environment where numerous design options can be instantly auditioned and compared. Save months of traditional speaker design work where results will outperform traditional techniques.
Use our DEQXpert on-line service for DEQX-Cal DIY tips and training, or well do it for you.
DEQX technology - realizing HD-Audio:
DEQXs patented, very low latency convolution processing corrects speaker frequency-response and timing errors by adjusting thousands of frequency groups, depending on your speakers measurements, so that they not only arrive at the correct volume but also on time.
Going further, DEQXs HD-Active regime offers hope of achieving a playback environment that comes closer to actually hearing the content of new HD media. Today's loudspeakers remain passive and uncompensated, dating from the same era as CRT TVs.
As a result, today's so-called HD-Audio is akin to watching an HD BluRay video on a twenty-year-old CRT Screen. Yes it will look slightly better, but inherently limited by the resolution and accuracy that CRTs can fundamentally deliver – we needed new technology HD-displays and projectors to get real.
With loudspeaker distortion around 1%, to name just one alarming parameter, its resolution is limited to 40dB, whereas the amplified signal driving the speaker is closer to 80dB and typically more.
Loudspeaker phase-response and frequency-response are decimated by the amplified signal of hi-res audio. In other words, frequencies do not arrive to our ears either at the right volume or the right time specified by our recordings. Taken to full implementation DEQX addresses all of these issues directly and indirectly.
The timing coherence accuracy that DEQX restores is often the most expensive design feature of loudspeakers. Normally, loudspeakers have no way to compensate errors via the signal driving them; so expensive engineering is used to minimize these errors and distortions. DEQX uses real computing horsepower to make that happen with essentially zero distortion and minimal processing delay so audio remains in sync with video.
A DEQXpert agent can run the comprehensive DEQX Cal™ software for you on a secure, remote connection for a surprisingly affordable price. Youll need a simple USB link to your PC (or Mac running Windows) using a measurement microphone and a broadband connection.
Or, if you prefer to calibrate it yourself, we can lend a hand via email or phone with tips and directions on getting the best from your setup.
Frequently Asked Questions