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RE: Why aren't corner speakers more popular?

Posted by Cask05 (A) on June 20, 2011 at 11:47:45

In Reply to: Why aren't corner speakers more popular? posted by Craiger56 on June 16, 2011 at 09:36:24:

I'm a little confused about your goal to have a taller speaker than a Khorn. I'm also curious why you need a narrower speaker than a Khorn.

However, note that Klipsch produced the Shorthorn (2 models) and Rebel (2+ models) in the 1950s, but discontinued them in favor of the Heresy, Cornwall, and La Scala. Later, the Belle was added. All three speakers were said to be corner-optional speakers. In fact PWK said that you can place any speaker in the corner and get better bass (in fact, you'll have to EQ the lf down, but what you will achieve is much lower bass frequency modulation distortion).

Assuming that you might use an off-the-shelf tower speaker, I think the biggest issue that you will run into is controlling the midrange SPL polars so that they don't interact with the walls which significantly affects stereo imaging. Tower speakers with horn-loaded midranges all seem to lose polar control below about 1500 Hz (vertically) and 1000 Hz (horizontally) due to the small linear dimensions of the midrange horn mouth horizontally and vertically.

I'd look at the K-510 horn from Klipsch's commercial product line as the smallest possible size for a corner-loaded speaker, and plan on putting a little ceiling treatment halfway to your listening position. I've not heard the Peavey Quadratic Throat horn, but it may not require ceiling or side-wall treatments. There are other midrange horns out there that could also do the job less well but none of the viable options are "slim".

You could use a La Scala II, but turn the bass bin around to face the wall--which will produce significant lf bass extension and aid lf smoothness (counterintuitive but well documented in JAES papers).

Another approach is to use a pair of horn-loaded woofers or even subs in each corner and crossover ~150-200 Hz to smaller conventional tower speakers placed away from the walls for soundstage imaging performance to keep them small in size. You'd need to correct for time misalignment using an active digital crossover or AVP --which will also do lf EQ.

Chris
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

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