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In Reply to: RE: Not really!!! posted by Kal Rubinson on October 27, 2010 at 06:16:22
If one look at this particualer center channel it has 2 mids and 2 bass units which would be unusual for a floor stander, maybe 1 mid + 2 bass?
I am sure that Peak consult have done their home work and see a reason for it!!
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The number of drivers is less important than their configuration. Any 2 drivers that are reproducing the same signal and are more than 1/2 wavelength apart will produce constructive and destructive interference in the plane of their displacement. Thus, the multiple drivers are a disadvantage in this design.
Kal
I have an older Radio Shack system, LX series, with a new Denon receiver, my B&K amp died. Because of the size of the tv, Panasonic rear projection and the Denon 6-16 ohm configuration, I hooked the 2 center speakers in a 16 ohm manner.
We will be changing to a new LCD soon and I want to improve the center channel reproduction. This is for movies only, I am the only sane one here as my record system is in its own room, so what config works best for the center.
Are you making some point or is there a question here?
Kal
Question? If not one of these large center channel speakers would you use a single speaker or what? I am wanting to upgrade down the road but the WAF will come into play.
1. Which "large center channel speakers" are you talking about?
2. What is the system configuration?
3. What are the physical constraints?
In general, I see no reason for multiple center speakers but there are some exceptions.
Kal
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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