Big EV tweeter horns

gonzothegreat

gonzothegreat

Super Member
At a local surplus shop, they had a pair of HR90 and HR40 (not positive on the numbers) for $25 each. They had cabling that made me think they were simply hung from the ceiling instead of being mounted in cabs.

Do these drivers sound any good? Would the HR90s sound good in a home system? From what I've read in the EV PA Bible, they were designed for spot coverage away from the main PA system.

The HR40 are definitely too big for normal home use (~3ft long) but the HR90 horns look like the ones in Sentry III cabs.
 
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If they're "long throw" horns, that would typically imply small dispersion angles, not in and of itself necessarily a bad thing for HF, as beamwidth narrows with most tweeters. The consequence is a constrained full-spectrum listening area, which some prefer, as room reflections are minimized or elimintated. It's the "speakers as big headphones" philosophy, the sound beamed directly at the listener.

Generally, however, the mainstream objective has been to provide a broader soundfield, and how well those horns will work for home use depends upon their actual directivity, what compression drivers are used with them, what frequency range they are operated over, what power response compensation is used with them, and how they are integrated into the total system design.

It'd be helpful if you provided links to the specifications for these.

http://audiokarma.org/forums/showthread.php?t=124244

I recall seeing pics of the white-painted horns and drivers with chain attachments in another thread, but can't find those. Can someone link to that here, please?

Edit: Nevermind, found it:

http://audiokarma.org/forums/showpost.php?p=1330577&postcount=28

Are these them?

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http://archives.telex.com/archives/EV/Horns/EDS/HR40 EDS.pdf

http://archives.telex.com/archives/EV/Horns/EDS/HR90 EDS.pdf

I'd consider HR40 useless for anything other than annoying specific neighbors.

HR90 with 90° x 40° dispersion has good potential, akin to Altec 811B. With 1.3" to 1" throat adapters as shown on Jgarcia's, I'd have BMS 4550 or 4552 playing two-way on them in about two Madison minutes. :yes:

Do they have the 1" throat adapters?

What bass bins do you have?
 
i tried them out as shown on the top photo. it took little to get these blasting, but, the sound was very good. i am not sure what to do w/ them, i dont have the room required. the 40's were REAL w/ vocals, great sound. the 90's were not in your face as the 40's. if you have the room, you should try them. i was quite surprised at how good they sound.

regards, j garcia
 
I picked up three HR90 horns with DH2012 drivers and left the HR40 as they were too large to even consider taking home (although they would look right at home on top of the Bluesmobile...). All five drivers were the DH2012 iirc. No throat adapters and the drivers definitely weren't the badboys in the photos.

As for my plans for these, I don't have anything to mate them with yet but I'll check back at the surplus shop to see if the bass cabs turn up. Hopefully they weren't sold previously. I know I saw the EQs months ago (and I passed on them) so they could be long gone.

Thanks for the advice and links to the specs.
 
Possible good news! No EV bass bins but I found something that has potential.

I ran across a pair of JBL Lancer 99s. The cabs are pretty rough - massive flower pot watermark with a 1/2" high bump on one cab and a big ding and missing grille on the other. The woofers are the original Lansalloy (sp?) which are currently absorbing a coat of DOT#3.

I searched AK and Zilch suggested a 4.5 cu ft cab for the LE14 to maximize bass response. According to the graphs posted, an LE14 can play out to roughly 800Hz @ -3dB or 1.5KHz @ -6dB. The HR90 horn will play down to 800Hz with its -3db @ 1.25KHz. The present compression driver is the DH2012 which has flat response from 400-5KHz (12dB/oct rolloff from 5Khz to 16KHz)

Does this combo have any potential or should I sell the LE14 and shoot for another driver? Maybe swap out the DH2012 and go for one of the BMS drivers suggested earlier?

DH2012 specs
http://archives.telex.com/archives/EV/Drivers/EDS/DH2012 EDS.pdf

HR90 specs
http://archives.telex.com/archives/EV/Horns/EDS/HR90 EDS.pdf
 
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One technically prominent proponent of the use of CD horns to eliminate room issues actually doesn't recommend listening on axis. He recommends toeing them in significantly to allow room reflections, but having those reflections come from the opposite wall. His methodology is to have speakers with constant directivity for the woofers and tweeters, or as much as possible. I can say that without a doubt his ideas work marvelously well. Actually, i misspoke, he uses waveguides, not horns.
 
gonzothegreat said:
I searched AK and Zilch suggested a 4.5 cu ft cab for the LE14 to maximize bass response. According to the graphs posted, an LE14 can play out to roughly 800Hz @ -3dB or 1.5KHz @ -6dB. The HR90 horn will play down to 800Hz with its -3db @ 1.25KHz. The present compression driver is the DR2012 which has flat response from 400-5KHz (12dB/oct rolloff from 5Khz to 16KHz)

Does this combo have any potential or should I sell the LE14 and shoot for another driver? Maybe swap out the DH2012 and go for one of the BMS drivers suggested earlier?
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LE14s will likely mate well. You don't have to go that big for cabs. I'm using Citation 7.4 in my system right now, which is 3.38 cuft tuned to ~29 Hz, as I recall. A search at LHF will turn up the specs, or I can measure the ones I have.

Mating BMS to HR90 will require throat adapters. Call EV to find out what they have or recommend to do that, 1" bolt-on driver to 1.3" horn throat. Once that's resolved, send me your spare horn and I'll try BMS on it. :thmbsp:
 
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