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In the Forum: Horn-Loaded Speakers
In the Thread: Midbass Horns and Real Estate.

Post Subject: 80Hz compression driver.Posted by Romy the Cat on: 11/15/2016

Nope, I never heard about those drivers. For sure a compression driver that goes down to 80Hz might be interesting. A few concerns I would have however.

The people who make such a driver would not come from nowhere but they rather would be the people who advocate let say 90-100Hz horns. Well, I would like to see the installation, or at least the idea installation of installation with 90-100Hz horn? Seeing what they propose would make possible to evaluate how serious they are.

From what I see on the picture the driver has no adjustable back plate. So it has to be some way to tune the driver resonance frequency, probably taping the pressure release whole would work…
I am bit concern with the throat. They made it look like 2”. At 80Hz and 2” entrance we end up with probably 15-20 feet horn, are they kidding? Also, the driver is kind of small and could not have large (4-5”) diaphragm. If it has 3” diaphragm and need to develop 80Hz then the diaphragm shall run too much in the driver, I do not like it.

They might find some kind of compression transition where unique phase plug that creates a “bubble” within throat that then resonates just above 80Hz in horn. That it would not be too pretty as well, even though it will push the RTA to right SPL numbers.
Anyhow, I do not know anything about the driver and would like to hear from somebody who tried it.

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