In Reply to: RE: Foil Project for IIIa's posted by computerman on February 12, 2012 at 12:04:31:
You might want to practice a bit with the solder and flux on a scrap piece of aluminum before risking the ribbons.
The tuning dots control resonances. The stretched mylar resonates like a drum. By dividing the diaphragm up into tuned sections, the resonances can be spread over a broader frequency range to smooth and tailor the frequency response.
I think Satie's the go-to guy on amps, don't know if he's seen your post but he has an encyclopedic knowledge of what's out there that might fit your budget.
Funny that you mention modifying a turntable for 78's, I did that with a Philips 212 when I was a kid. I still remember those cool capacitance switches with the glowing lights . . .
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Follow Ups
- RE: Foil Project for IIIa's - josh358 18:08:08 02/12/12 (21)
- RE: Foil Project for IIIa's - computerman 07:10:25 02/13/12 (20)
- RE: Foil Project for IIIa's - Satie 09:59:53 02/13/12 (15)
- RE: Foil Project for IIIa's - computerman 11:23:30 02/26/12 (0)
- RE: Foil Project for IIIa's - computerman 18:55:35 02/20/12 (0)
- RE: Foil Project for IIIa's - computerman 18:26:23 02/19/12 (0)
- RE: Foil Project for IIIa's - computerman 13:48:02 02/19/12 (9)
- RE: Foil Project for IIIa's - Satie 07:58:32 02/21/12 (8)
- RE: Foil Project for IIIa's - computerman 08:55:54 02/25/12 (1)
- RE: Foil Project for IIIa's - Satie 16:22:47 02/26/12 (0)
- RE: Foil Project for IIIa's - computerman 09:05:18 02/21/12 (5)
- RE: Foil Project for IIIa's - Satie 12:59:59 02/21/12 (4)
- RE: Foil Project for IIIa's - computerman 20:01:31 02/22/12 (3)
- RE: Foil Project for IIIa's - Satie 12:54:51 02/26/12 (2)
- RE: Foil Project for IIIa's - computerman 15:02:33 02/26/12 (1)
- RE: Foil Project for IIIa's - Satie 14:41:14 02/27/12 (0)
- RE: Foil Project for IIIa's - computerman 16:53:16 02/14/12 (1)
- RE: Foil Project for IIIa's - Satie 22:16:11 02/14/12 (0)
- RE: Foil Project for IIIa's - josh358 07:57:28 02/13/12 (3)
- RE: Foil Project for IIIa's - computerman 13:21:05 02/19/12 (1)
- RE: Foil Project for IIIa's - josh358 16:59:58 02/19/12 (0)
- RE: Foil Project for IIIa's - tyu 08:15:10 02/13/12 (0)