a Trademark of High Fidelity Engineering Co.
Speaker Designs

 PLANS for FULL RANGE SPEAKERS

Model Personal Planar

This speaker design is an experiment in pneumatic planar technology, something I've never seen elsewhere.  This set is for your desktop.  The wave front is IN PHASE coming off both sides of the panel.  They image like crazy.  The down side is very low efficiency and very rolled high frequency response.  Nevertheless, for the guys who like to tinker with new ideas we have made some plans and design notes.

 Read the White Paper to find out how it works!
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Personal Planars

 

 

This speaker design is based on the 1956 Jensen Imperial folded horns. After building several from the original Jensen prints over the years we re-designed it to improve the tone, rigidity, and efficiency.  These 28 cubic foot horns stand over 5 feet tall, over 6 if you use a bent wood high frequency lens like in the picture.  For a world reference in TIGHT bass, these actually beat my reference Acoustat Monitors (electrostats) for making music sound completely live once!  Typical Response 20Hz ~ 20KHz.   Speaker design as it happened.

 Read the White Paper to find out how it works!
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Imperial Horns

 

 

Model 103B

This speaker design was an attempt to make a speaker from readily available parts that kicks butt for around $500 including cabinets.  Now the exact parts (cabinet, midrange, tweeter) are no longer available - go figure! But, for any do it yourselfer, a simple 2 cubic foot sealed box isn't too hard to come by.  The woofer that this design is based on is still available, and you could choose your own midrange and tweeter without harming the overall design.

 Read the White Paper to find out how it works!
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Model 103b

 

 

 

 PLANS for SUBWOOFERS

Model DBK10

This subwoofer design is rock solid.  We did it in the early 90's for car audio but found it has merit in any home system as well.  It's a box with very low distortion and very clean bass with great efficiency.  It also accommodates a variety of 10 inch woofers because it has an adjustable Q.  To date, over 17,000 of these sub boxes have been built around the world with overwhelming positive feedback.

 Home or Car  /  40Hz ~ 240 Hz  /  Uses 1 or 2 tens.

 Read the White Paper to find out how it works!
PLANS
OR
FINISHED

Model DBK10-II

DEATHBOX

 

Model DBK210

This subwoofer design is a larger interpretation of the 10 inch design above.  It uses one or two 12 inch woofers.  It also has a transmotional insert for fine tuning to a specific driver like the cabinet above, but it's larger size allow it to dig deep into the lowest octave with amazing clarity and efficiency.  
 

 Home or Car  /  35Hz ~ 200 Hz  /  Uses 1 or 2 twelves.

 Read the White Paper to find out how it works!
PLANS
OR
FINISHED

Model DBK212

12 INCH DEATHBOX

 

Model HWK15

This subwoofer design was done in the early 90's for night clubs that need huge SPL.  It uses between one and four 15 inch drivers to give you a variety of signatures - everything from peaked up boom to flat, tight and accurate.  It's large size and variety of woofer loading possibilities make it almost a generic box like the two above.  You can get good results with a huge variety of 15 inch woofers.  affectionately called the "House Wrecker" because so many people make it for the home.  

 Home only  /  20Hz ~ 100 Hz  /  Uses between 1 and 4 fifteens.

 Read the White Paper to find out how it works!
PLANS
OR
FINISHED

Model HWK-15s

HOUSEWRECKER

 

Model LRK210

This subwoofer design was done specifically for cars with fair size trunks. It uses two 10 inch woofers.  The 12 inch cabinet height makes it possible to fit under some rear decks.  It uses a low mach porting design that assists the band pass in efficiency and helps broaden the response.  Called the "Lowrider" it makes a good show box.  Typical
 
 

 Home or Car  /  35Hz ~ 120 Hz  /  Uses  2 tens.

 Read the White Paper to find out how it works!
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Model LRK-210

LOWRIDER

 

Model TBK210

This subwoofer design is very specific for truck cabs.  It fits in smaller and standard size trucks with a depth of about 7 inches allowing the seat to be all the way back.  Set up for use with two 10 inch woofers it has wonderfully tight and non-fatiguing bass.  Some modifications such as the tire jack may need relocated in order for this cabinet to fit.  


 Pick-up Truck only  /  40Hz ~ 600 Hz  /  Uses   2 tens.

 Read the White Paper to find out how it works!
PLANS
OR
FINISHED

Model TBK-210

TRUCKBOX

 

Model WO32

This subwoofer design was done with the serious audiophile in mind who needs something exceptionally fast to keep up with his or her electrostats, Lowthers, or horn speakers.  It's a wicked design using two 10 inch woofers.  This is another one that has been praised throughout the world for it's sound!  


 Home or Car  /  28Hz ~ 110 Hz  /  Uses  2 tens.

 Read the White Paper to find out how it works!
PLANS
OR
FINISHED

Model WO32

WICKED ONE HYBRID

 

This is the original "Wicked One" subwoofer design.  It features a pair of 10 inch woofers bandpass loaded into a dual folded horn.   Built by over 30,000 people world wide with overwhelming positive feedback. Perhaps our best box design, we have given away free since 1996 to show people what DECWARE is all about.
 
 

 Home or Car  /  20Hz ~ 100 Hz  /  Uses  2 tens.

 Read the White Paper to find out how it works!
PLANS
OR
FINISHED

Wicked One

ORIGINAL WICKED ONE

 

 

 ASSEMBLED FULL RANGE SPEAKERS


 

 The Radial Loudspeakers - 360 degree dispersion of sound - the benchmark for imaging

The Radial Loudspeakers
 

NOTE:  A single Zen Triode (SE84C) amp is  just enough to get these speakers enjoyable in a small room.  We recommend a little more power for most rooms.

 

 

 

HIGH DEFINITION TOWERS
using the Decware modified
Fostex FE206E full range driver. 

35~18KHz 1~30 Watts 96 dB  8 ohms

More information

 



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