Designer:

Charlie

Project Category:
Freestyle Speakers

Project Level

Intermediate

Project Time:

1-8 Hours

Project Cost:

$100-$500

Project Description:

Another speaker experiment. I gave up on the bass (less than 150 Hz) response of the exciters and added a couple of 100W Jamo subs. The plates for the exciters are made of 1/16″ bass wood ply. The metal rings are industrial stainless filter spacers. With the help of a DSP power amp I can force a flat response out to 17 KHz. The DSP only works when you use a single driver for the mids and highs in order to maintain phase/timing information in stereo. They are open baffle/dipole speakers.

Design Goals:
 
Decent response, open baffle dipole, non-ear bleeding listening.

Driver Selection:

Dayton Audio EX32EP2-4

Enclosure Design

Circular Plate 300mm in diameter.

Crossover Design:

None, added a couple of Jamo 100w subs.

Tips & Tricks:

 Connect the exciters without mechanically loading their mounts.
I used a diode laser engraver to cut the basswood plates.

Conclusion:

 With the help of a DSP power amp I can force a flat response out to 17 KHz. The DSP only works when you use a single driver for the mids and highs in order to maintain phase/timing information in stereo. They are open baffle/dipole speakers.

About the Designer:
Old guy retired from Boeing Lab engineering in Seattle. I love to tinker.

Project Parts List: