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I don't have one, but I have the chance to have one built for an old tannoy dual concentric speaker. I wonder how much of the sound of the corner enclosure is lost or changed if you have to put the speaker away from a corner. Told you it was a dumb question. Thanks for any insight Norm
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why build a corner horn and put it in the center of a wall. Partly because I don't have good corners in the room secondary to doors etc, and the other is, while I would love a pair or horns, I only have a 15" monitor black and one 12" monitor gold speaker. so I can't have a pair built and figure that if I can only build one, maybe someday I can change rooms so I want to have a corner horn. Norm
You could build a false corner to use until you can get a real corner.
False corners don't work like real corners, being far smaller. They're better than nothing, but aren't a substitute.
Hmmmmmm. I was in Paul Klipsch's home in 1985 and BOTH of his Khorns used the false corners the he published in his "Dope From Hope" papers. The extrea space in his living large living room was for Steinway and Bojendorfer Grand Pianos for his wife, Valerie.
I built some myself.....they were basically 4x4 foot 2x4 frame with 3/4 MDF (on mine), plywood on his (I think). He claimed that for the Khorns (probably not for your Tubas, though) making them larger than 4 feet was not an improvement in bass.
"how much of the sound of the corner enclosure is lost or changed if you have to put the speaker away from a corner."
To oversimplify moving out of the corner will cost you about 6dB in the low end, moving away from the wall about 12dB. That's not at all accurate, as the distance to the corner or wall enters into the equation as well, as do room modes, but it's as good an approximation as you're likely to get.
Yesterday I went to a hifi show for enthusiasts run by the hifiwigwam of which I am a member. In an enormous room, at a guess 40 feet x 40 feet, there were two pairs of tannoys, one pair being 15" corner cabs. These were were sited some ten feet from the back wall and maybe about the same from the side walls, the bass was room filling and deep. Most unusual for Tannoys in my experience. In fact a bit overblown for my taste. These corner cabs were home built with several layers of differing materials insde including ceramic tiles. But why build corner cabs and then not use them in the corners?
Were those Tannoys in corner horns (GRF or Autograph enclosure, the latter has a short mid-horn) or ported corner cabs (corner Yorks)?
I don't know autographs but they certainly were not GRF. Having said that they didn't have a midhorn just 15" dual concentrics. They were not that smooth in the bass away from the corners.
I wouldn't expect them to be smooth but I could well imagine that the effect of running a ported corner cab in space to be different from that of running a corner horn in space.
That is to say if one moves a ported cab one loses the corner loading, when moving a corner horn wouldn't one dramatically reduce the size of the horn mouth and reduce the horn length seen by the driver?
Neither can be any good but the might be audibly different.
Irrespective if a corner horn or a corner reflex or even a corner sealed if the cab was engineered for corner placement it won't work well otherwise placed. One would think that fact should be rather obvious, but I suppose some might not be aware of the concept of space loading even though they should.
At ten feet from the rear wall you'd get a response notch at 28 Hz, which might be moot depending on the cab bandwidth, and no quarter-space loading. While the subjective impression might have been of deep bass what really would have been possible was high output in the midbass, which is usually considered boomy tone.
whatever, subjectively or not why bother to build corner cabs if you are not going to put them in corners?
These definitely were not build like Klipschorns since they were able to be out in the room. A very "likeable" thing with a corner speaker is they can appear to take up much less room. They just sit in the corner.
Obviously the speakers you were looking at needed backs to make the speaker complete, not like the Klipschorn that requires a corner, otherwise they would have been underwhelming in the bass when moved into the root. It seems reasonable that the speakers were designed so they could be in corners and unobtrusive, maybe even possibly loading the room better, with smoother bass if they were in the corners.
PeterZ
Hi gonzo,
REAL corner horn speakers are designed to use the two corner walls to extend the size of the bass horn mouth. The corner mirror affect increases the horn exit by 4x size. This is true for front cone driven corner horns like Klipsch, and rear cone driven horns, and evem rear ported bass reflex designs like JBL DD66000.
REAL corner speakers use the 90 degree walls to support a controlled directionality within the room. Two corner horns arranged for stereo sound will maintain 90 degree directionality control through most of the frequency range, and this generates a very wide sweet spot for multiple listeners. Not many rooms have the full corners and physical dimensions such that the listeners are in the optimum location.
I have seen bass reflex speakers that had both front and rear ports where one port could be closed off based upon corner(rear port open) or near a wall(front port open) placement. A design like this would provide some coner placement benefit if the opportunity opens up.
The pispeakers.com website has a great white paper on the advantages of corner horn speakers.
.
Not a dumb question at all. If the cabinet is designed to use the corner walls to enhance bass development, that would be compromised. It might still sound acceptable. Good luck!
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