Bigass bass horns using conventional sub drivers?

Most folks building horn subs are generally building them for playing music, not infrasonics. As a result, while very efficient and capable of impressively low distortion, they generally start to run out of puff around 30-35hz.

I've also seen a few subs based around more conventional low-efficiency high-Xmax drivers, similar to the Table Tuba. Has anyone built a sub like this?

Also, on a related note, does anyone have any thoughts on the use of high-pass filters? I'm new to horns, and it would appear that playing any material below a certain point will cause huge subwoofer excursions with no output. As such behavior could potentially damage the driver, a steep high-pass filter seems in order, but I haven't seen much of anything along these lines.
 

tb46

Member
2006-01-09 7:04 pm
Texas
Hi spasticteapot,

Take a look at mwmkravchenko's Trio-12 FLH thread:

http://www.diyaudio.com/forums/subwoofers/168697-trio-12-front-loaded-horn-subwoofer.html

and, soho54 did some very nice work in this thread:

http://www.diyaudio.com/forums/subwoofers/165029-can-work-7.html

In properly designed FLHs the horn loses its effectiveness below the design cut-off, but the sealed rear chamber protects the driver from over-excursion. They should be better off than transmission lines, tapped horns or bass-reflex enclosures in that respect.

Above all, make lots of models in Hornresp, it will tell you what a particular speaker is capable of, including the excursion.

Regards,
 

kornnylike

Member
2010-04-05 4:04 pm
soho54 did some very nice work in this thread:

http://www.diyaudio.com/forums/subwoofers/165029-can-work-7.html

In properly designed FLHs the horn loses its effectiveness below the design cut-off, but the sealed rear chamber protects the driver from over-excursion. They should be better off than transmission lines, tapped horns or bass-reflex enclosures in that respect.

Above all, make lots of models in Hornresp, it will tell you what a particular speaker is capable of, including the excursion.

Regards,[/QUOTE]

4to6 of the ciare horn give you crazy bass