Does having two centers (1 above screen, 1 below) address voices being off-center? - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 10 Old 10-19-2019, 08:42 PM - Thread Starter
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Does having two centers (1 above screen, 1 below) address voices being off-center?

One advantage I've seen about having an AT screen is that the voices come directly from the center of the screen, which is great. If you don't have an AT screen you need to have a speaker below or above the screen, and the voices come from the floor or the ceiling, which is annoying.

Would have two center speakers, one above and one below the screen, address this issue? Would this make the voices seemingly come from dead center? I'm hoping to have the benefits of a non-AT screen while still having the voices from from the middle.
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post #2 of 10 Old 10-19-2019, 08:57 PM
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post #3 of 10 Old 10-19-2019, 09:00 PM - Thread Starter
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post #4 of 10 Old 10-19-2019, 09:10 PM
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Generally, there is a big potential for comb filtering when using 2 speakers with the exact same signal.

Some claim it is a terrible idea and others say it is not so bad.
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post #5 of 10 Old 10-19-2019, 09:14 PM - Thread Starter
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Generally, there is a big potential for comb filtering when using 2 speakers with the exact same signal.

Some claim it is a terrible idea and others say it is not so bad.
Thanks. The fact some people say it’s terrible is provably a good enough reason for me to drop the idea for now.
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post #6 of 10 Old 10-20-2019, 12:31 AM
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I used top run an acoustically transparent screen then switched to a solid one. I didn't notice that he dialogue was coming from underneath.

I did, however, just install a new to me avr that raises the perceived dialogue up to the center of the screen very effectively.

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post #7 of 10 Old 10-20-2019, 06:56 AM
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Most AVR have a setting for a phantom center. It takes the center channel and adds it into the RL. If you sit near the center of the seating I find it works very well. I keep my center off most of the time as we sit in the two center seats. When I get a larger group of people I turn on my lower mounted center that is angled up. I find lower is better than upper as lower is closer to ear level.

I have never tried one above and one below.

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post #8 of 10 Old 10-20-2019, 07:09 AM
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BAD idea, as you've already concluded.
1 channel --> 1 speaker

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post #9 of 10 Old 10-20-2019, 05:20 PM
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The ventriloquism effect satisfies most people with a center speaker properly mounted either immediately above or below the screen and aimed at viewers ears. We see someone's lips moving near the vertical center of the screen and our brain processes the sound coming from above or below and tricks us into believing the sound is coming from the lips. Some people don't properly process the ventriloquism effect and are more aware of the conflict in visual and audio. Others simply obsess about seeing a speaker above or below the screen and can't get it out of their heads that it isn't located exactly where the dialog is coming from. Since we're all wired a little differently we need to try for ourselves and see what works for us. Each case can vary. I tried both below and above and in my setup and for my personal preference above the screen sounded better.
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post #10 of 10 Old 10-21-2019, 11:49 AM
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Running Audyssey ( or other room correction software ) more or less eliminates this problem.

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