Over on Audio Asylum, I posted a question about the plus or minus (or outright insanity) of adding (somehow) a phase plug to wizzer cone Fostex drivers. Got a reply from Moray, who mentioned what I'll call the Ping Pong tweak ('cause "PP Tweak" doesn't sound right
I'm waiting to hear back from him, but in the mean time, I managed to turn up a few, slightly more detailed posts by Moray concerning this idea on the Single Driver Forum.
From what I can understand, one suspends a ping pong ball directly in front of the wizzer cone (first with string or tape, as a listening test). Then, if you like the effects, a more permanent (but still removable) solution involves making a wire frame to hold the balls
, which itself is attached to the mounting bracket with magnets.
The result is claimed to be smoother highs, improved soundstage and a wider sweet spot for better off-axis listening.
Anybody tried this?
One thing it's hard to get excited about is that wire frame notion. Aren't there certain adhesives--like the rubbery stuff used for automotive weather seals, or even removable caulk--that would allow you to place the ball directly inside the wizzer, still leaving the ball removable and the drivers undamaged?