Did anyone else try the hockey tape mod (post 2362 in this thread)? I've been running them happily on my desk at work (from an O2) daily for the last two years with zero complaints. I came back around to modelling the driver June of 2018 in a fluid-structure-interaction (FSI, coupled Fluent...

That is really difficult to predict based on the mode-superposition analysis I showed. The modal and operating shape results only tell half of the story since the phase varies over the diaphragm in operation at intermediate frequencies. Differently phased components may constructively or...

The center two node lines in the 9.8kHz mode are right at the magnet holes (you can distinguish the circles in the mesh image), and the outer two nodes are just outboard of the next row of holes (i.e. at the inner edge of the outer magnets).

I measure 0.018+/-0.002" between the cup-side magnets and the clamp surface, and the diaphragm assembly contributes another 0.003" of clearance to that. I'd call it a solid 20 mils in assembly, so about half of that gap remains with the tape on one side.

The plates with the holes act as magnetic field guides (a "pole piece" in a loudspeaker driver) to concentrate the field where the diaphragm coil sits (and increase the sensitivity). The field lines attracted by the guides follow the material around the holes within the guide material to exit...

If you'll notice in my photo - all four of those posts on my test driver were gone. I couldn't arrive at a decent way to flex the hooks out of the way when disassembling. I would bet those serve as an assembly aid only since there is some gap left when the hooks are the only thing holding it...

I used Howies brand tape - which is described as a "tightly woven poly-cotton cloth and an aggressive natural rubber adhesive" Since it is bonded to the magnet I don't think permeability would make much of a difference with this. I would guess that surface roughness (hockey tape is good at...

Hey folks, forum newb here. I decided to model the RP driver in some software I use at work. It had been bugging me that some uber-damping mods here appear to preserve the high frequency character. I wondered in particular whether the ~10kHz peak is due to a resonance of the driver membrane...

Howdy everyone - Tom here. I've been gleaning from the collective experience (especially enjoyed monstrous threads of Grado and Fostex mods) here for a while, and having made some good and bad modding choices I hope to contribute.