I'm working on a new horn design....sort of a hybrid design with a front firing horn reaching a lowish 80Hz, but a large volume back chamber to help drop the LF to 35/40Hz.

See drawing....plus pic of Oris set-up showing similar front loaded section I want to replicate.

Could you kindly advise of the Great Plains Audio 416's or 515's would be best?

Thanks.

Andrew

Sydney.