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Author Thread: SPL increase in waveguide
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Marvin Velazquez
New member
Username: Starvin

Cypress, CA
US

Post Number: 2
Registered: Sep-05
Posted on Tuesday, December 12, 2006 - 07:17 pm:    Edit Post
Does anybody know how much SPL increase I will get if I have a loudspeaker in free space that generates a certain SPL and then place that speaker in a waveguide? I will be using the same input power and the waveguide diameter is 6inches (& all signals will be low frequencies). Does anybody know the proper equation to solve this?
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Peter Galbraith
Gold Member
Username: Petergalbraith

Rimouski, Quebec
Canada

Post Number: 1982
Registered: Feb-04
Posted on Sunday, December 17, 2006 - 02:47 pm:    Edit Post
A waveguide like a horn?

Complex issue. A waveguide increases the coupling between the diaphram and the air, making the tarnsfer more efficient. But it will also change the impedence of the driver, and this fact has to be taken into account when designing the crossover.
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