Project Matrix
Below is a chronological project matrix to help customers navigate my ongoing projects. Feel free to review the various projects to see if something interests you. I will update the matrix as I progress through the various projects.
Black Indicates the project is complete
Blue indicates the project is still in development
Revision Log
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00 Created June 8th, 2023
- 02 2155, 2124, 2118 added July 5th, 2023
Biradial Product Summary

- ES200 Biradial No.1135
- ES1200 Biradial No.1054
- ES800 Biradial No.1094
- ES450 Biradial No.1993
- ES290 Biradial No.1670
Project Matrix
- 1159 Stand-Mount using SB Acoustics Drivers

- 1159.2 updated crossover to improve imaging (Jan '23)
- Plans available by request
- 1159.3 Woofer size increased to 6.5" and enclosure made deeper
- Plans available by request
- 1274 Mid-Bass Cabinet
- Been discontinued (replaced by cabinet No.1798)
- 1416 Co-Entrant Horn
- Built on-off build for customer
- Plans available by request
- Crossoverless design on midrange, very simply crossover on HF
- Co-entrant technology available hobbyists or commercial licensing (please contact)
- No plans are published on my site (please contact)
- 1309 Sabourin

- Introduced plans in '22 using GRS Planar
- Changed Eton woofer to Lavoce 12" subwoofer or Dayton 12" woofer
- Dual compression driver option added (May '23)
- Passive crossover to be developed and published (summer '23)
- Horn No.1931 added (3D printed and CAD Plans)
- Passive crossover to be developed for use with bass cabinet No.1303 (Summer '23)
- 1349 Nighthawk

- Build and testing ongoing
- Changing all sheet metal to x2 thickness to strengthen
- Crossover development underway (June '23)
- Building two pairs (one pair spoken for)
- Second pair in 'espresso' stain and varnish
- 1680 Floorstander 10" 2-way

- No changes > available as a custom build
- Thomas Stereo to review (summer '23)
- 1736 2-way Stand Mount using 8" Purifi
- Tested new horn No.2007 with Peerless tweeter
- Tested Seas tweeter
- Testing new throat adapter for SEAS (June '23)
- Built cabinet and evaluating in listening room using active setup (May '23)
- 2807 15" Large Scale Horn Speaker System

- Design development complete (Fall '22)
- TAD TL1601B standard driver of choice (available new)
- Developed complete system using ES290 (passive) (spring '23)
- Demo video here.
- Testing SB Audience 15" Subwoofer 15SW600 (summer '23)
- Testing Beyma 15LX60V2 (summer '23)
- Testing Lamar M3 Alnico (July '23)
- Designed custom 200Hz biradial
- Removing Western Electric throat adapter and bolting directly to horn using 18mm throat and x6 M5 bolt pattern
- Getting Yuichi A290 horns for direct comparison to ES290 (Horn No.1670) (summer '23)
- Making custom horn for Fostex T96A to replace existing front horn lens, material is lacewood. (reference project No.1896)
- Plan on demoing at Toronto Audiofest Fall '23
- Working with Lamar on 21" Field Coil Woofer version of cabinet
- Will use Lamar M2 or M3 as a 2-way setup using 300Hz crossover point
- 1693 Open Baffle, 15" 3-way using 10" Seas and 1" horn

- Design complete
- Metal support brackets getting plasma cut
- Fully developed passive crossover and baffle almost ready for CNC (May '23)
- 1723 Large format midrange horn (200Hz Fc)
- Tested Celestion Axi2050, BMS 4599, RCF ND950
- Making Y-Adapter for BMS 4590 (3D Printed) (July '23)
- Classic Series

- 1797 Pro-Sound Mid Bass

- Design complete spring '23
- Customer testing in Quebec summer of '23
- Design changed to stackable single driver cabinets (April '23)
- Beta testers welcome
- 1816 Conical Petal Horn

- Released plans for 300Hz mid horn
- Plan to release HF petal horn (Summer '23)
- 1861 Biradal for RAAL

- Designed and build custom horn for RAAL 210 Lazy Boy
- Issued CAD plans on site
- Continue to design or build custom horns for various RAAL and other pure ribbon, AMT, and Planar
- 1866 Fullrange driver plans using Markaudio CHR120

- Issued plan set April '23
- Developing shallow horn 3" fullrange drivers and using 1866 as a bass cabinet (reference short horn No.1928)
- 1900 Small Desktop monitor

- Introduced May '23
- Successfully created concrete injection mold to make horn and made a prototype!
- Proof of concept, will continue to develop concrete injection molding process for other horn sizes and types.
- Successfully had local supplier make horn from ceramic, kiln fired with artistic glaze (offering in fall of '23)
- Currently building x3 identical speakers for L,R, Center for small home theater using concrete horns. (not spoken for, please contact)
- 1901 Circular Baffle for 8" fullrange

- Built pair in cherry in spring of '23
- Customer reported excellent sound quality results
- Please contact for custom quote
- 1905 Waveguide for Dayton Audio AMTPRO4
- Completed finned version here.
- Building pair in walnut with 3D printed throat adapter (July '23)
- Taking orders for extra pairs (please contact)
- 1929 Conceptual Wide Coverage Horn (multicell)
- Design complete and issued for free to beta testers
- Attempted testing but could not successfully 3D print since the openings in the throat were too small
- Changing design to 50% less cell density (fall '23)
- 1930 Trying to design a hexagon version but having difficulty modelling in solidworks
- 1931 Full ES horn for GRS Planar
- Designed for 3D printing
- Horn split horizontally to allow on 340 x 340 print bed
- Custom rear vented cover
- 1937 Large 15" 2-way Studio Monitor (TAD style)

- Issued plans fall '22
- Replaced monitor 1362
- 1939 ES450 Biradial
- New size variant the fill gap between ES290 and ES600 biradial
- 1978 Revised design for ES-600 Biradial


- Changed design to include draft angles similar to latest ES290 1670
- Added Viablue UFO feet x3 pocketed into bottom of horn
- Added custom Joseph Crowe decal in brushed copper on black
- Added heavy duty 3D printed throat adapter that transitions 1.4" throat down to 1" throat.
- Accommodates standard 76mm bolt circle pattern
- Allows flexibility to use either 1" or 1.4" drivers
- Making one pair for customer (June '23) with another pair being made for inventory (please contact)
- Introduced speaker plans No.2154 that uses Horn No.1978 along with compression driver rear cover No.1978-01-005
- 2015 10" MTM 2-way plan set using Scanpeak 10" and 1" horn

- Released May '23
- 2037 Speaker System No.2037 - 6.5" 2-way Plan Set
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- 6.5" SB Acoustics SB17NRX2C35-4 woofer
- Peerless OC25SC65-04 25mm Dome Tweeter 1
- 2099 Focusrite Scarlett Solo replacement
- Looking for low noise preamp for speaker testing
- Considering purchasing Universal Audio Apollo Duo X preamp based on specifications.
- 2100 Eminence N314x
- Tested on ES600 Biradial
- Quite impressed with sound quality
- Want to update 1815
- 2118 Custom ES100 Biradial Design for End User
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- 2124 Y-Adapter for Horn 1723, to be 3D printed and tested (July '23)
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- 2154 Speaker Plans 15” 2-Way
- 2155 Speaker Plans 15" 2-Way using 15LX60V2 (please contact, not published online)
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