DEQX HDP-3

Introducing DEQX Calibrated™...Loudspeaker Correction Linear Phase Digital Crossovers with Room Correction. 

Based on the PDC-2.6 Platform, the HDP-3 has been improved and put on some steroids. A new more robust power supply has been implemented to handle more power draw from future DSP software upgrades and to handle some new higher grade passive components added to the mother board. DEQX has upgraded many of the parts on the board to a higher grade.  ALL op-amps (about 26) are changed to the LM4562, as are ALL electrolytic caps are upgrade, in addition to a few strategically placed new ones. There are also changes to the regulators, an EMI mains filter added.

A new bigger chassis was required for all the upgrades and now has the ability to be easily upgraded to any of the output options available, or all of them:)
The new unit is more resolving with bigger dynamics. A big improvement on an already incredible sounding platform.
Output options can be added quite easily on the new chassis. So future upgrades are easy.
 
DEQX’s reference quality HDP3 preamp processor is aimed at the audiophile and professional seeking the ultimate DEQX implementation. Based  on the same ground breaking features provided by the acclaimed PDC2.6P Preamp/Processor, the HDP-3 provides further analogue transparency in a new larger chassis with analogue power supplies and further enhanced analogue electronics.
 

DEQX’s reference quality HDP3 preamp processor is aimed at the audiophile and professional seeking the ultimate DEQX implementation. Based on the same ground breaking features provided by the acclaimed PDC2.6P Preamp/Processor, the HDP-3 provides further analogue transparency in a new larger chassis with analogue power supplies and further enhanced analogue electronics.

The HDP-3 is a stereo digital processor offering DEQX’s patented speaker and room correction technology. When connected to a PC running DEQX’s software, the HDP-3 allows you to measure and correct your main speakers and subwoofers using its largely automated wizard-driven measurement, analysis, and correction software.

Our loudspeakers introduce between ten to one hundred times more distortion, as well as errors in the form of inaccurate frequency-response and incoherent timing, than the signal that drives them. Unlike DSP room correction systems, whose measurements must contain room acoustic effects, the HDP-3 first measures and corrects a speaker’s native (anechoic) behavior so that frequency related phase (group-delay) errors and frequency-response errors can be corrected in detail before measuring and correcting room acoustics.

The HDP-3 can be used for correcting passive speakers and optionally integrating one or two subwoofers, followed by room correction. If used to provide DEQX-HD™ active implementation, where each driver type has its own amplifier, the HDP3 corrects each driver individually. The HDP’s six outputs providing up to 3-way active crossovers. Configurations supported are; passive speakers plus the option of one or two subwoofers, 2-way active speakers plus optional subwoofers, and 3-way active speakers.

Stereo digital and analogue Inputs include: SPDIF (RCA), AES/EBU (XLR), unbalanced analog (RCA), balanced analogue (XLR). Standard outputs are analogue unbalanced (RCA). Optional outputs include balanced analogue (6 x XLR) OR Digital outputs (3 x XLR, 3 x RCA). Multiple HDP-3 units can connected together for multi-channel surround configurations such as 4.2 and 5.1 to 7.7 configurations. For Home Theatre use, it is possible use only one HDP3 to correct front Left and Right plus subwoofers only, where most soundtrack music is provided. The HDP3 can automatically select its digital input when it senses a stereo PCM output from a stereo CD or DVD player (up to 24-bit 96kHz), defaulting to its analogue input for front left/right film soundtrack playback.

The Preamp features of the HDP-3 include six digitally controlled analogue volume controls that allow the DACs to operate at their maximum resolution at low listening levels. The remote control provides volume control, input selection, four different speaker and room correction profile selections, and Lo, Mid, Hi, tone controls where the mid control provides a fully parametric EQ band. 100 tone control settings can be saved and recalled from the remote control.
The industry leading SHARC 32-bit floating point DSPs from Analogue devices combined with DEQX’s software contribute less than 0.0001% distortion and noise. The HDP-3 contains improved power supplies and analogue electronics to preserve the system’s digital processing transparency to audiophile requirements.

If you are not utilizing the services of a DEQX installer and intend to measure and correc your speakers and room yourself you will need either the Standard Calibration Kit or Reference Calibration Kit. For high end ‘speaker’ correction (as distinct from room correction), it is recommended to use the Reference Calibration Kit that provides the Earthworks microphone. The Standard Calibration Kit proving the Beringher microphone has a 20kHz high-end correction limit—the HDP3 however will pass up to 40kHz

• Provides DEQX Calibrated™ speaker correction for passive speakers
• Provides DEQX-HD™ speaker correction for up to 3-way active speakers
• Enhanced audiophile grade analogue electronics
• DEQX-HD™ active crossovers; 48dB/octave to 300dB/octave linear-phase
• Frequency-response of speakers typically corrected from 6dB range to 1dB*
• Traditional active 3-way crossovers from 6dB/octave to 48dB/octave
• Automatically corrects phase and group-delay over typically 3ms window
• 32-bit, floating-point, 240-MFLOPS processing with dual SHARC DSPs
• Integrate one or two subwoofers with main speakers with time-correction
• Audiophile op-amps typically 300V/uSec slew-rate with high output drive
• Provides anechoic measurement and detailed display for speaker correction
• Audiophile 24-bit 96kHz ADC-DSP-DAC processing and conversion
• Patented low-latency FIR processing for speaker correction allows video use
• Front-panel volume control and ‘Profile’selection
• Provides room-measurement/display (non-anechoic) for room correction
• Four, user-defined ‘Profiles’ allow different crossovers, room-EQ, preferences
• Auto and real-time manual Parametric EQ over measurement display
• Remote controls; Volume, Profile, Input select, and Lo, Mid, Hi tone controls
• Remote tone control provides full-spectrum parametric EQ with 100-presets
• Analogue volume control maintains full DAC resolution at low listening levels
• DEQX integrated software measurement, correction and user-defined options
• Calibration Kit provides DEQX-calibrated measurement microphone
• Two analog inputs: Unbalanced (2 x RCA) and Balanced (2 x XLR)
• Individual driver correction prior to crossover when actively implemented
• Two stereo digital inputs: S/PDIF (1 x RCA) and AES/EBU (1 x XLR)
• Microphone input has 48V phantom power for DEQX Calibrated™ mics
• Anodized Black brushed or Silver brushed aluminum front panel
• D115V-230VAC switched mains input; 30VA (100V-200V Japan only option)
• 2U high chassis; 3.5" H x 17" W x 11.5"
• Audiophile linear main power supply
• Six analog outputs: unbalanced (6 x RCA)
• Membership of DEQX Users Group (online)
• Free downloadable software and firmware updates

Inputs:

Stereo analog inputs, balanced (XLR) and unbalanced (RCA)

Stereo digital inputs, S/PDIF and AES/EBU

Six analog outputs, unbalanced RCA

Mic input for optional DEQX Calibrated™ measurement microphone

Standard Calibration Kit includes:

DEQX Calibrated™ Behringer measurement microphone

Five-metre balanced microphone cable (XLR)

DEQX PC-based measurement, correction software on CD

Five-metre USB cable

Reference Calibration Kit includes:

DEQX Calibrated™ EARTHWORKS measurement microphoneFive-metre balanced microphone cable (XLR)

DEQX PC-based measurement, correction software on CD

Five-metre USB cable

Additional OUTPUT options (6 x RCA unbalanced outputs are standard):

Electronic balanced analogue outputs (6 x XLR)

OR

Jensen/DEQX transformer analogue balanced outputs (6 x XLR)

And/Or

Digital outputs; S/PDIF (3 x RCA) and AES/EBU (3 x XLR). One AES sync input (XLR) allows Sample Rate Conversion (SRC) asynchronous re-clocking of all digital outputs to the input reference clock 24-bit,100kHz max (auto-sense input clock)

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