So I got into DML speakers by making some homemade exciters from old drivers. I was amazed with the sound so I wanted to make a project around that.
I figured a smaller panel with a woofer could be a good combination.
I had a pair of Cerwin Vega E 312 speakers with bad surrounds and a broken midrange.
So I got the idea to downsize the 12" woofer to a 6.5 inch.
Trying to estimate the TS parameters I figured it could fit well in a smaller enclosure with an A4 size panel and exciter.
I cut off the aluminium basket off the 12" woofers and cut the cone down to 6.5 inch size. Then I 3D printed a new basket and glued everything together incl new surrounds.
They do sound nice in a bunch of music but sound harsh in some songs.
The base needs to be turned up quite a bit to be satisfactory.
(As a reference I use my Dali 606)
I tried both a 500 Hz first order series filter and without a filter on series and parallel.
I think the panel needs a bit of testing to work out the flaws of the sound.
So far parallel connection without s filter sounds nicest. I'm a afraid of the low load on my amp.
I had some spare low grade plywood and I wanted to do some end grain patterned plywood.
The exciters I used are the Dayton ultra since they have a threaded adapter that I can print more of. It makes it easier to try different panel materials. The panel I currently use is a 5 mm thick sandwich styrofoam with paper front and back from an art supply store.
I figured a smaller panel with a woofer could be a good combination.
I had a pair of Cerwin Vega E 312 speakers with bad surrounds and a broken midrange.
So I got the idea to downsize the 12" woofer to a 6.5 inch.
Trying to estimate the TS parameters I figured it could fit well in a smaller enclosure with an A4 size panel and exciter.
I cut off the aluminium basket off the 12" woofers and cut the cone down to 6.5 inch size. Then I 3D printed a new basket and glued everything together incl new surrounds.
They do sound nice in a bunch of music but sound harsh in some songs.
The base needs to be turned up quite a bit to be satisfactory.
(As a reference I use my Dali 606)
I tried both a 500 Hz first order series filter and without a filter on series and parallel.
I think the panel needs a bit of testing to work out the flaws of the sound.
So far parallel connection without s filter sounds nicest. I'm a afraid of the low load on my amp.
I had some spare low grade plywood and I wanted to do some end grain patterned plywood.
The exciters I used are the Dayton ultra since they have a threaded adapter that I can print more of. It makes it easier to try different panel materials. The panel I currently use is a 5 mm thick sandwich styrofoam with paper front and back from an art supply store.
