In Reply to: Just a name; the Duplex is a coax two-way loudspeaker posted by mhardy6647 on March 25, 2016 at 06:19:53:
Great info -wow ! And historically important -at the birth of the hi-fi era.
You're right about Altec in the 40s. But (I don't think) in kits until the 50s, along with Jensen, etc.
And I see they were not compression drivers. But still a lot more affordable than corner horns or ESLs, of the day..
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Follow Ups
- RE: Just a name; the Duplex is a coax two-way loudspeaker - J. Phelan 07:16:46 03/25/16 (5)
- the Duplex's HF unit was (is) a compression driver - mhardy6647 07:22:45 03/25/16 (4)
- RE: the Duplex's HF unit was (is) a compression driver - J. Phelan 07:53:59 03/25/16 (3)
- the crossover is at ca. 1100 to 1500 Hz (depending on the specific version) - mhardy6647 12:08:20 03/25/16 (2)
- RE: the crossover is at ca. 1100 to 1500 Hz (depending on the specific version) - J. Phelan 12:36:42 03/25/16 (1)
- no, the diaphragm is probably about 2.8" in diameter - it's NOT a direct radiator - mhardy6647 15:05:21 03/25/16 (0)