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I was just sitting in my listening chair, thinking about corner horns and the like, and it suddenly occurred to me that the way I have things set up here is somewhat like a pair of Synergy horns-feeding-a-Synergy horn (see photo).Because of limitations of available space (and inconvenient location of the furnace in my basement listening area), I have the speakers and seat arranged so that I sit facing into a corner. It actually works better than I would have thought.
I have a carpet hanging in the sharp apex of the corner to act as a bass-trap, but otherwise the two DIY-Synergy speakers are feeding into the corner's "horn" at "port locations" that are about 1/4 wave from the apex at 60Hz, near their crossover point to the subs. The subs (just barely visible at the lower bottom edge of the photo - I don't have a wide angle lens on the camera phone) are 1/4 wave from the apex at around 50Hz. Maybe I should move them to the other side of the speakers, closer to the apex?
So, other than the fact that I'm in effect sitting inside the conical horn of the corner, and the horn is firing into the relatively small closed box of my basement, this isn't too different from a Synergy horn arrangement at low frequencies. Kind of like a Synergy horn driving into the ports of a bigger Synergy horn.
Tom, you can tell me I'm crazy if you want to, now...
Edits: 07/13/15 07/13/15Follow Ups:
Hi Bill
Haha, no your not crazy at all, your thinking acoustically as in wavelengths and how sound actually works based on frequency.
Good approach!
Best,
Tom
Step away from the bong?
:)
Just-messing, Bill. It reminded me of my own Profound Discoveries 40 years ago when chemically-assisted...well, except yours is based on sound facts and well mine maybe weren't so-much.
That's sweet. I know I read about that project somewhere, but I can't remember the deal with the vented W's -- are they in the Syn-ish horns, too?
If not, a sawzall, one-sheet, and an afternoon could make the tops "aim-able", maybe. IIRright, the backchambers on the mids were tiny (?).
Getting khorn clones (Georgians) taught me the value (desirability, rather) of the seprable top.
And I've never pushed through all that Toole stuff (he was Kinda Intense about certain stuff), but I have stuck my head in a corner opposite cornerhorns and there really is about no better-sound possible in my house.
Thanks for all you've done for all of us, Bill, and thanks for posting this.
Floyd Toole actually recommends the symmetric-in-a-corner setup. I firmly believe that playing with sub locations is a game that every audiophile should enjoy themselves.
However, you do know that REW (Room EQ Wizard) has an embedded room simulator ("Room SIM") that will allow you to move things around including your listening position...and see the FR effects interactively. Highly recommended.
Chris
"As far as the ear can tell, consistently clean and spacious bass can be reproduced only by a driver unit coupled to a horn-type acoustic transformer..."; Jack Dinsdale, May 1974
Yeah, thanks. I did know that, though (OmniMic or Praxis can both be used for that, too.... I'm the author of those).
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