Front loaded Horn - how does that work with whizzer cones?

[AllenB]

Why do you want wider dispersion (fair question).

The thing is that a good waveguide doesn't have a sound of it's own, so it isn't a goal unto itself. It comes down to such things as dispersion. Narrow dispersion when done well tends to clean things up due to reduced reflections.

 

[Bigun]

I am building a single mono speaker, and have found wide dispersion works well for that. Rather than see the room as the enemy, I embrace it.

 

[AllenB]

Ok, good. What I was going to say next is that a wide waveguide is a flat baffle, a wider one is an omnidirectional speaker, and a simple omni is an OB.

 

[Kev06]

Bigun, you were talking about 'loading' the bigger cone. Which is what a horn might do. But IMO you don't need (or necessarily want) significant loading. A shorter waveguide that simply guides or contains the big cone's radiation into a smaller angle will, as a result, concentrate that radiation - i.e. giving a higher SPL.

Provided the waveguide's angle is wider than the wizzer cone's beaming, the latter shouldn't be massively affected. Though wizzer cones tend to be a compromise, with significant diffraction, and so their unwanted diffraction will likely be affected by the waveguide. Potentially for the worse if directed forward or causing HOMs.

 

[tuyen]

Just adding another subjective comment, but related to the topic. It is regarding Troy Crowe’s horn no. 1548. In his YouTube clip of the horn paired with the AER BD3 driver that has a whizzer cone, he mentions “it projected quite a wide coverage and wasn’t beamy at all..”

Link to YouTube below. Scroll to 2:48.

 

[Bigun]

I like what Joseph Crowe has done there. His workshop is another wonder.