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Welcome to Decware


For Live Listening Experiences without compromises.

Size:  60" high by  14" wide (excluding wings) by 28" deep.  150lbs ea.



Commissioned by Lii Song for their flagship driver, this 29.5Hz Folded Horn was a no compromise design by Steve Deckert.  The combination is so good we had no other choice but to name it 'The Headwrecker'.  


The Horn Design

This design is licensed to Lii Song who will be manufacturing it for markets outside the USA.  Decware is also building them (as shown in high performance black) for anyone who wants to pick them up from our facility in East Peoria Illinois, USA.

For those ambitious enough to DIY a pair of your own, we are providing the complete plans in both Imperial and Metric, 9 pages of each.  This pair of horns uses exactly 4 sheets of 48 x 96" plywood.  Cut sheets are included in the plans.


Available as D.I.Y. plans and fully built & tested

Assembly photos

Testing Videos

Purchase Plans

Purchase Drivers

Model PT-10

Pickup from Decware - no shipping

These are available in many stages of completion from raw cabinet only to fully finished as shown for around 10K per pair.

Purchase optional magnetic crossover

The speaker cabinets are offered: 

  • sealed and ready for paint or fully finished in eggshell 2K paint.

  • with or without wings.

  • with or without drivers and hardware.

  • optional magnetic crossover (Gizmo2) is purchased separately. 

Optional wings shown left.  Wings help with midrange projection and frequency response. 

User installable and removable. 

Recommended for larger spaces.

Frequency Response w/ Gizmo2


RMS Average Response @ 0 & 15 degrees with horn output.

RMS Response @ 15 degrees without horn output


RMS Average Response @ 15 degrees with horn output.

RMS Response @ Horn Mouth (blue)

RMS Waterfall plot

Frequency Response w/out Gizmo2

Gizmo2 Magnetic Crossover (with orange / without blue)


Net weight: 140lbs each.

Net weight without drivers and hardware: 110 lbs each.

Response 30Hz ~ 17kHz.

Efficiency 103dB 1W/1M.

Width without wings 14 inches.

Width with wings 23 inches.

Depth is 28 inches.

Height is 60 inches.

This horn design is made with a removable baffle making driver changes fairly easy.  This is because the cabinet design will work with a wide range of drivers up to 10 inches in diameter.  It is in fact a fun way to make inexpensive drivers sound like they cost a lot due to the bass response capabilities of the horn.

There is a design log in the Decware support forums for this horn.  You can read about it here.

Sound Demos
(recorded for headphones)