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Mid-horn flare; how critical are the dimensions? [message #51988]

Tue, 08 April 2008 15:06

DavidK
Messages: 2
Registered: May 2009

Esquire

Hi,

Decided to give the 7 Pi a shot and started with the Mid-Horn section. Now due to some poor cutting on my part I've ended up with the mouth of the flare being undersized. I've got 23 and 5/8's by 11 and 3/4's. The other dimension that has ended up under size is the edge of the flare to throat on the side panels 14" instead of 14 and 1/2. Throat size is correct as is the throat to flare distance of the top and bottom panels. So have I wasted a day making some oblong pyramids, or can I go ahead and use these? Any likely problems. I have to say they were a real pain to put together and I don't really want to scrap them and start over if they are usable.

Dave

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Re: Mid-horn flare; how critical are the dimensions? [message #51989 is a reply to message #51988]

Tue, 08 April 2008 17:21

Wayne Parham
Messages: 18784
Registered: January 2001

Illuminati (33rd Degree)

Even though it is a large horn, it is actually undersized at the lowest frequencies and benefits from corner placement. You don't want to make it any smaller if you can help it. I suggest adding trim to the front of the cabinet that extends the mouth. We add hardwood trim to our midhorn cabinets for aesthetics, and it actually extends the mouth a little bit. See the photo below, you'll notice the trim added to the front of the horn, forming the mouth edge. We bevel the trim to match the flare angle. You could also radius the edge to soften it if you wanted.