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High Efficiency Speaker Asylum Need speakers that can rock with just one watt? You found da place. |
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High Efficiency Speaker Asylum Need speakers that can rock with just one watt? You found da place. |
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In Reply to: RE: flat to 100hz ? posted by FlyCast on September 6, 2015 at 07:04:58:
The GPA 515 would be OK in a big horn.
The RCA sounds the best of the 100hz double 15 horns, Altec A4, JBL4550, RCA Ubangi. I would build any of these without ported big back volume.
I designed and built two pair of these in 1981. Originally I used a pair of 15's, but changed to a pair of 12's to push the HF crossover point higher. The horn mouth is the same area as the Altec/JBL/RCA. They were 3dB down at 95hz on the floor (2Pi).
A new design for dual 12PE32, not yet built. About 40" deep.
Dual 12PE32 flat to 160hz (in 4Pi), only 24" deep, 30" wide, 40" tall.
This is the replacement design for the 48" wide 1981 design, much better form factor. Might go to 120hz or so on the floor (2Pi), not measured that way (as is used in 4Pi). Plans and cut list on line.
Another photo of this last one at the link.
Edits: 09/06/15 09/06/15
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Follow Ups
- RE: flat to 100hz ? - djk 19:38:55 09/06/15 (4)
- RE: flat to 100hz ? - FlyCast 06:07:19 09/07/15 (3)
- RE: flat to 100hz ? - djk 19:52:16 09/07/15 (2)
- RE: flat to 100hz ? - lokie 04:51:19 09/08/15 (1)
- RE: flat to 100hz ? - djk 23:53:15 09/08/15 (0)
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