In Reply to: RE: Ultimate 15 inch driver build. posted by mnawaz3@aol.com on July 10, 2022 at 08:31:21:
"gpa 515c is the safest bet even though the stated T/S specs on gpa 515c are not ideal for horn loading and differ from original altec515c/515b."
Even if the "new spec" were identical to the old spec, I find that charging 6-8 Times the amount of money for a driver that's supposedly made from the original Altec tooling to be more than a bit excessive.
You can get Pro drivers with Neo magnets today for much less $$ that will outperform them in the right horn or custom bass reflex box.
I have found many of the older drivers 30-40 years old that have the same as original Measured Thiele/Small Parameters that work just fine, if they have "mud magnets" and no Alnico, which are over rated.
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Follow Ups
- RE: Ultimate 15 inch driver build. - claudej1@aol.com 07/10/2214:17:41 07/10/22 (1)
- RE: Ultimate 15 inch driver build. - Bill Fitzmaurice 19:07:33 07/10/22 (0)