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Model HDT

click here 1280px high res image

 MODEL HDT
Single Driver Full Range Crossover-less Loudspeaker

Size 13.5" wide x 13.5" deep x 39" high

GET THE PLANS NOW FOR $19.95

Add to cart


ADD TO CART
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We accept MC VISA AMX DISC JPC and Paypal


This Speaker has at least one Decware Authorized Builder that will custom make the speaker for you if you don't want to do it yourself!  Authorized Builder's Listed Below:


Designs in Wood - NC, USA

Contact information will be e-mailed to you after you purchase the plans.  You may contact all of the above builders for a quote and choose the best price.

(To become an authorized builder please contact Decware)



Model HDT

Music sounds live through the HDT's




OVERVIEW

The HDT's are a crossover-less point-source loudspeaker featuring Decware's 8 inch full range driver, model DFR8.  The rather fascinating cabinet design redefines what is possible with a single driver in nearly every category and represents a 6 year investment of designer Steve Deckert's best efforts.

If you're considering single driver speakers, these are the most performance in the smallest amount of space you're going to find.  They have nearly perfect bass and it's extended to the point where you have no danger of being tempted to add a sub-woofer.  They also have no mid-range shout and all of the high frequency extension and focus that you could want / eliminating any desire to mess with super tweeters.  That covers the three biggest downfalls of most single driver speaker designs.

An extremely serious audiophile speaker, the HDT should ALSO be considered by audiophiles who have no intention of purchasing a single driver design such as this... why?  Because it spanks regular hi-fi speakers with it's electrifying speed, presence, dynamics and imaging.  At 10dB louder than most hi-fi speakers on a single watt and the ability to handle real power, these speakers can out rock even the best of them. 

HDT's are at home with 2 watts but can also handle over 100 class A tube watts making them at home on either side of the fence... Small SET amps to large KT88 push pull monsters can be used without distortion.  This ability to work well in either camp is one of the biggest things that separates these from other single driver designs that are too delicate to handle real power.

Extremely honest, the HDT's are used at Decware for final voicing of the all amplifiers because as Steve puts it; "They tell me what's wrong faster than any other speaker we have".  A great tool for amplifier design.  When the signal feeding these speakers is bad, the sound is bad.  When it's good everything sounds real and you can no longer hear the speakers or amplifiers. 




CABINET TECHNOLOGY

The cabinets are around 70 lbs each and consist of three primary chambers that are cross-coupled at the top behind the driver and passively coupled to the room to eliminate internal back wave reflections that cloud mid-range and create distortions at higher volumes.  These 3 chambers are then tuned at the bottom to 2 different frequencies to feed an averaging chamber in the base of the loudspeaker.  This chamber feeds a transmission line that runs the vertical length of the loudspeaker and exits at the top of the cabinet.  The energy from this line is then pre-loaded by a plate that sits on top of the cabinet to force an omnidirectional wavefront on a horizontal plane.

What all this accomplishes is multilevel reflex tuning across a wide band of frequencies which in turn maintains better control on the cone for more linear response.  There are no large cavities inside the cabinet and no parallel surfaces to create standing waves or box sound.  Yes, these speakers are more like quads in that they lack the typical box coloration that we've all grown used to over the past 50 years.




The result of this design is linear response from 38Hz to 20000Hz without inductors or networks to dumb down dynamics as illustrated by the impulse response above - where the speaker (light blue) measured impulse hides behind and accurately follows the test signal in red. 


POWER REQUIREMENTS

Tube amp friendly with reasonable to above average performance on our 2 watt SET amplifiers but electrifying on higher power.


ON THE SOUND & PERFORMANCE

Besides the elevated performance of these speakers, their biggest asset is the smoothness and disappearing act.  Smoothness that is often hard to find in most high efficiency speakers...  They accurately reflect the recording source and amplifier.  Imaging is one of these speakers strong points and they virtually disappear with good upstream components.  Musicians will appreciate the accuracy of timbre and harmonics making it effortless to identify specific brands and models of instruments in the recording. 



SPECIFICATIONS

96 dB with 1 watt at 1 meter
38Hz ~ 20kHz
8 ohm nominal impedance
Driver compliment - DECWARE DFR8
Crossover - none
2 ~ 100 watts
Max SPL 116dB
Size 13.5" wide, 13.5" deep, 39" high



REVISION HISTORY

Click picture for larger high-res image ! Model HDT - 2003 to Present

This speaker design has remained unchanged since it's release in 2003 with the exception of a driver upgrade.  The DFR8 full range driver used in this cabinet was improved in 2005.  The cone is now white instead of black.


OPTIONS

An interesting option is called the HDT MKII.  For situations when a warmer speaker with greater bass weight is desired.  This is accomplished with a 2-way implementation of the same cabinet using different drivers and tuning.  There are two top plates instead of one that frame the isodynamic planar ribbon tweeter.  The woofer is a Silverflute wool cone driver running full range with no crossover.  Total efficiency of the MKII option is 94dB and is available in 4 or 8 ohms.


Click picture for larger high-res image !







SUPPORT

We also have a support forum with many people who own our speakers who's experiences you may benefit from. 

HDT Owners manual in pdf format.


REVIEWS

You may read reviews on our products here.





Model HDT

click here 1280px high res image


MODEL HDT
Single Driver Full Range Crossover-less Loudspeaker

Size 13.5" wide x 13.5" deep x 39" high

GET THE PLANS NOW FOR $19.95

Add to cart


ADD TO CART
View Cart or Check Out

We accept MC VISA AMX DISC JPC and Paypal



 

 




Zen Styx speaker cables



Zen Styx Reference Grade Silver Cables


Starting at $250.00 PR

 

more info

 

 









 
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