Anyone have any idea if it would be feasible to suspend a Dipole 18 OB AE driver from a 10mm eyelet screwed into the mounting hole on the rear of the magnet? I am toying with the idea of suspending these in a sonotube h-frame from the ceiling...Of course I sent email to AE asking but as anyone who has tried contacting them knows, getting a reply from them is next to impossible....Thanks.
I just today came across the thread. It was a simple and genuine question given the data on cabinet noise reduction from isolating the drivers that I had read. No need to be dismissive.
I experienced an M6 bolt cross thread into a T-nut. It was done by hand and oddly there was little indication of such until it was about 1/3 the way in. It came to a stop and wouldn’t even back out - I could watch the bolt bending/twisting under the torque of the No.3 screwdriver. I had to use penetrating fluid to release the galled bits of metal. It was actually hot when I finally turned it out. I then ran a 6mm tap in it to clear the threads.
Apparently, I am the Hulk.
There was, however, no fear of the T-nut releasing from the wood in that case. It was balanced piano board, a pressed particle board pressure glued under tons of force with 3mm plywood on both faces. That stuff is amazing - it’s hard as nails and doesn’t warp or swell. I like high-density fibre board for machined finishes, but MDF is not great on its own.
I quit using t-nuts. I have had too many spin out and that often leads to having to mutilate teh baffle.
Even with plywood — i do not use MDF.
The front gasket is there if you mont the drivers on the rear iof the baffle, if mounted from the front you should also have a gasket on the back.
dave
Even with plywood — i do not use MDF.
The front gasket is there if you mont the drivers on the rear iof the baffle, if mounted from the front you should also have a gasket on the back.
dave
Not something i would do. It will reduce vibrations from the driver getting to the baffle (and the rest of the loudpeaker), but to do that you end up with all that energy now isolated to the driver with the net result of reducing DDR — ie reducng resolution.
I take thge opposite approach, maximizing energy transfer to the box but sharing iy over many panels so that no one panel has its potential resonances excited.
The measures you saw did not show the whole picture.
If one wants to eliminate coupling between box and driver the wat Fujitsu 10 doea it with the cabinet floating around the driver, but the driver connected to a significant mass outside the cabinet. A nightmare to build i am sure.
dave