RE: Not really!!!

Posted by JimL (A) on October 27, 2010 at 08:17:06

In Reply to: RE: Not really!!! posted by jazz1 on October 27, 2010 at 06:29:31:

Actually there are disadvantages to that topology - it is basically the D'Appolito array turned on its side. As originally designed (i.e. a symmetric VERTICAL array) it has the advantage of having bass, mids and highs coming from the same virtual source centered at the tweeter. There is vertical lobing due to interference between two drivers reproducing the same frequencies, but in the usual listening situation that's not a problem because people usually listen sitting down. If there is more than one listener they are generally sitting side by side rather than one on top of the other. The horizontal dispersion is smooth which helps if listeners are sitting off the center axis.

However, when the design is turned on its side with a HORIZONTAL array, this results in horizontal lobing which is a problem if there is more than one listener, because listeners sitting off axis can easily be in a null of the lobe resulting in uneven direct frequency response at the listening location. This is a design flaw in most center channel speakers that use a horizontal arry - they really would work better standing on end.

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Follow Ups Full Thread

Topic - Do you need a great center channel?? - jazz1 08:12:17 10/26/10 (23)

RE: Do you need a great center channel?? - Mag 13:53:47 10/31/10 (0)

RE: Do you need a great center channel?? - dbphd 11:57:05 10/28/10 (0)

Ewwwww - badman 11:30:12 10/28/10 (0)

I find the center channel for HT is very important - Steyr 07:00:56 10/28/10 (0)

Here's a crazy idea. - Presto 12:13:59 10/27/10 (1)

I appreciate the implicit humor but......................... - Kal Rubinson 15:55:40 10/27/10 (0)

RE: Do you need a great center channel?? - tomservo 06:55:11 10/27/10 (3)

what about listening off axis - Steyr 07:02:37 10/28/10 (0)

RE: Do you need a great center channel?? - Kal Rubinson 15:53:26 10/27/10 (0)

RE: Do you need a great center channel?? - Hi-Fidelity 11:21:48 10/27/10 (0)

I assume you are asking about for Hi-Rez music and not HT - Robert C. Lang 15:20:57 10/26/10 (10)

not really!!! - jazz1 23:30:04 10/26/10 (9)

Not really!!! - Kal Rubinson 06:16:22 10/27/10 (7)

RE: Not really!!! - jazz1 06:29:31 10/27/10 (6)

Exactly!!! - Kal Rubinson 09:09:38 10/27/10 (4)

RE: Exactly!!! - goblin141 06:33:04 10/30/10 (3)

?????? - Kal Rubinson 06:42:20 10/30/10 (2)

Sorry - goblin141 09:21:05 10/30/10 (1)

RE: Sorry - Kal Rubinson 14:55:03 10/30/10 (0)

RE: Not really!!! - JimL 08:17:06 10/27/10 (0)

RE: not really!!! - Robert C. Lang 23:57:54 10/26/10 (0)

Nope... - BigguyinATL 11:51:32 10/26/10 (1)

RE: Nope... - IEaudiodude 10:44:48 10/27/10 (0)

Follow Ups

RE: Not really!!! - JimL 08:17:06 10/27/10 (0)

RE: Not really!!!

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