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

  • 00 Created June 8th, 2023

  • 02 2155, 2124, 2118 added July 5th, 2023

Biradial Product Summary 

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 
    • Comprised of 1835, 1836
    • Continuing to design custom cabinets and horns as per order 
  • 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
  • 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 
  • 2124 Y-Adapter for Horn 1723, to be 3D printed and tested (July '23) 
    • 2154 Speaker Plans 15” 2-Way
    • 2155 Speaker Plans 15" 2-Way using 15LX60V2 (please contact, not published online)