I found them effective, even on a cheap pair of Radio Shack LX-8 speakers.
The cabinet sucked, but the drivers were an OK 8" bass/mid, and the top mounted Linnaeum design dipole.
MUSH in the middle, boomy bass.
I put the Tekna-Sonic's on, and heard a good difference. Definitely far from magic, but more than a subtle improvement. Bass still a bit boomy, but the midrange mush was greatly reduced.
I'd recommend them if you really think the cabinet is the main cause of the problem. I think they'd be more effective in the back, as the rear wave probably hits the back the hardest. They may work on the sides, but perhaps not as well, and it might be a little ugly.
Good luck.
The cabinet sucked, but the drivers were an OK 8" bass/mid, and the top mounted Linnaeum design dipole.
MUSH in the middle, boomy bass.
I put the Tekna-Sonic's on, and heard a good difference. Definitely far from magic, but more than a subtle improvement. Bass still a bit boomy, but the midrange mush was greatly reduced.
I'd recommend them if you really think the cabinet is the main cause of the problem. I think they'd be more effective in the back, as the rear wave probably hits the back the hardest. They may work on the sides, but perhaps not as well, and it might be a little ugly.
Good luck.