New 15" Ported Horn

Last night I was doing something slightly different in the form of a Pink Floyd tribute in a medium sized theatre only this time using my 2x12+1.4" mid-tops on two of the ported horns each side.  I also managed to do a very brief measurement, mainly to check the phase alignment.  The ported horns integrated with the 2x12's very well and did a very good job of keeping up with them (the 2x12's are ridiculously loud).

When you're used to running 18" reflex, it's a very different sound. For starters the horns don't really do a huge amount below about 50Hz but that's just a feature of the design.  I had designed them wanting a really good kick drum but what I'm really pleased about is how good things like bass guitar sound through them.

Drivers are not ideal, they're RCF MB15H401 which are predominantly intended for use in mid-tops but I had 4 used drivers available, they simulated really well and are a very efficient driver.  The closely related LF15G401 would be better and that's what I'll probably use if I turn these into confetti!

Yes, there are two slightly different designs.  The bottom two were built by hand as prototypes then the top two were built from CNC cut parts once I was happy with the design and drawn them up.  First usage in anger is tomorrow, we'll see how they go!

Hi Dub no problem mate, whats your email?

Is there anything else you can tell me that would help when building these? Such as where you placed wadding (if any) and placing of the throat? Cheers