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B&C ME45 1" Exponential Horn 90x40 2-Bolt [message #72513] Thu, 03 May 2012 12:11 Go to next message
mantha3 is currently offline  mantha3
Messages: 72
Registered: May 2012
Location: Lino Lakes, MN
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Hi,

I'm doing research on some DIY designs... Looking at the 4Pi

If the "B&C DE250-8 1" Polyimide Horn Driver 8 Ohm 2/3-Bolt" is used should the Horn = "B&C ME45 1" Exponential Horn 90x40 2-Bolt" be used?

Thanks,
andy
Re: B&C ME45 1" Exponential Horn 90x40 2-Bolt [message #72515 is a reply to message #72513] Thu, 03 May 2012 14:17 Go to previous messageGo to next message
mantha3 is currently offline  mantha3
Messages: 72
Registered: May 2012
Location: Lino Lakes, MN
Viscount
Hi,

I thought I'd clarify what I'm asking. The Horn I mentioned above is what I saw that seemed to match up to the horn driver from B&C and is made by B&C. I guess I was thinking it would make sense to get the B&C horn if I was to get the B&C DE250. I was thinking the Horn is designed for the driver I guess.

This B&C horn is 90 X 40. I think the one Wayne sells for the 4Pi is his H290C which is a 90 degree flare. Wayne has his H290C and it is 90X45 I think...

I guess I like the idea of the B&C one being made of cast aluminum

http://www.parts-express.com/pe/showdetl.cfm?Partnumber=294-622&FTR=b&c%20me45

I am just putting this in as I want to get the best combo and looking for thoughts. I'd prefer to buy from wayne and not the big companies online.
Re: B&C ME45 1" Exponential Horn 90x40 2-Bolt [message #72516 is a reply to message #72513] Thu, 03 May 2012 15:14 Go to previous messageGo to next message
Bill Epstein is currently offline  Bill Epstein
Messages: 1088
Registered: May 2009
Location: Smoky Mts. USA
Illuminati (2nd Degree)
I've used the DE-250 with Altec 811B, Bill's Woodhorn and now the H290. With one important caveat, the H290 sounds best but you must completely cover the outside surfaces of the horn with rope caulk, a.k.a., Mortite.

I looked into the B&C horn you mention but passed not just because it differs from Wayne's design, especially important with the no-longer-new crossover, but for the issues I had with the also aluminum, 811B. No damping or cutting of vanes kept it from over-emphasizing the upper mids.

Re: B&C ME45 1" Exponential Horn 90x40 2-Bolt [message #72517 is a reply to message #72516] Thu, 03 May 2012 16:10 Go to previous message
mantha3 is currently offline  mantha3
Messages: 72
Registered: May 2012
Location: Lino Lakes, MN
Viscount


The idea of wrapping a damper layer of mortite around the outer surface of the H290C horn makes sense. I'll use the H290C.

The H290C looks in photos the same as the B&C and I thought both the H290 and the B&C one I mentioned were 90 X 40 (same).

I'll use the tested one from Wayne.



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