Hi all,
I've recently acquired some ~25yr old SEAS 13 F-GMBX which have rotted foams. Though these are a mid driver, careful low level listening (and a look at the response graphs) show promise up to ~8kHz. I'd like to try and use them as a wide/full-range (Fs~75Hz). Would anyone have advice about DIY replacement surrounds (as in actually making then yourself) to aid in this ambition? I'm tempted to try fabric - what would be the best way to treat it to be supple enough yet soundproof?
Crazy idea I know, but it's nearly Christmas...
Ian
I've recently acquired some ~25yr old SEAS 13 F-GMBX which have rotted foams. Though these are a mid driver, careful low level listening (and a look at the response graphs) show promise up to ~8kHz. I'd like to try and use them as a wide/full-range (Fs~75Hz). Would anyone have advice about DIY replacement surrounds (as in actually making then yourself) to aid in this ambition? I'm tempted to try fabric - what would be the best way to treat it to be supple enough yet soundproof?
Crazy idea I know, but it's nearly Christmas...
Ian
one idea,
1/2" whatever ø you need, round router bit and corresponding rounding over bit to make a mold of wood which you can pour latex in to form the surround.
****-u-
↓
¯U¯
1/2" whatever ø you need, round router bit and corresponding rounding over bit to make a mold of wood which you can pour latex in to form the surround.
****-u-
↓
¯U¯
I'm perhaps being too creative here, but aside from leather, which is supposed to be excellent, I wanted to try NO surround. Fertin got me thinking, and for the hell of it I was going to take a couple of cheap old speakers with the rolled paper edge and cut it, then affix four tightly-stretched rubber bands from the frame to the dust cap in a pie-slice shape. It would be fun to measure and hear the result (if any).
Of course with your drivers, the surround gap would have to be filled to prevent low/mid cancellation. I also like the idea of the old CV strokers. With an inside/outside spider, you could dispense with the surround and it would look better than my idea and Fertin's (which I think looks fugly, ha).
Of course with your drivers, the surround gap would have to be filled to prevent low/mid cancellation. I also like the idea of the old CV strokers. With an inside/outside spider, you could dispense with the surround and it would look better than my idea and Fertin's (which I think looks fugly, ha).
There is a Japanese guy who makes a mould from tubular polystyrene foam, cut into a half circle lengthwise. Bent into a circle, then glued to a flat board.
Over that he places jersey cloth, and paints it with polyurethane.
Over that he places jersey cloth, and paints it with polyurethane.
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