front horn for the bass (BD-Design)

by Bert , Thursday, June 25, 2009, 09:44 (5419 days ago) @ lucanato

Hi Lucanto,

i always follow your web site expecially the showroom.. wow

Yes, it is a nice place to be...

after many months i've found a nice guys who built fot me a self made azura horn (le cleach) and i've put it in front of my lowther...woww

Lowther drivers were originally designed for front loaded horns and therefore they do sound best when they are actually loaded with a front horn balancing the frequency response. A horn with the La Cleach curve is doing okay and I think it can also be used to combine with a horn loaded bass system for optimal integration.

i have seen that you and also the v52 website use this mix to cross better the upper and the lower loudspeaker.

Not just the square horns shown there but also the modified Oris 150's on the Ultra system and also the Swing system uses this principle with success.

This basic idea of having almost identical radiating sources in the crossover range works best but to find the optimal horn length and throat size has to be done experimentally. I can't help you with that (no formula's you could use) or simulators which combine a front horn with a reflex bass system...

The only way to make it work and to learn what type of crossover you'll need is to experiment and measure the frequency response. Changing drivers makes it already needed to change the size of the throat for a smooth transition between horn and reflex...

If you caNot measure and see what you are doing then it is basically impossible to do, you can't predict what is going on.

the lowther is without nothing in the rear (dipole) may be i'll try to charge it with a cilinder case..

It would be very helpful to close the rear sound of the Lowther because now you have a phase problem making it basically impossible to integrate the lowther acceptable with any bass system.

Good luck.

Bert

--
BD-Design - Only the Best!