Front inwall LCR below screen - horizontal or vertical placement? - AVS Forum
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post #1 of 18 Old 12-25-2012, 03:47 PM - Thread Starter
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I currently have a wall mounted 60" TV and am about to mount a 106" electric screen that will come down in front of the TV for when we want to view movies using the projector.

My question is this. Due to limited space of the wall where the screen will be going, I will have to mount my InWall lcrs below the bottom of the screen level - should I mount all three horizontally (as I was originally planning to do) or should they be in the vertical?

Thoughts, suggestions, comments?

Scott
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post #2 of 18 Old 12-25-2012, 03:53 PM
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What speakers are they? How high will the tweeters be with vertical and horizontal placement?
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post #3 of 18 Old 12-25-2012, 04:05 PM
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Most speakers are designed for vertical placement. For that matter very few of those intended for horizontal placement are actually properly engineered so that they'll work well that way.

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post #4 of 18 Old 12-25-2012, 04:48 PM - Thread Starter
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The speakers are Triad InWall Mini LCR's. I am anticipating the center to be approx 3' off the floor (maybe a little higher).

http://www.triadspeakers.com/products/iwm4lcr.html#
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post #5 of 18 Old 12-25-2012, 05:05 PM
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Quote:
Originally Posted by luner99 View Post

The speakers are Triad InWall Mini LCR's. I am anticipating the center to be approx 3' off the floor (maybe a little higher).
http://www.triadspeakers.com/products/iwm4lcr.html#
Two things. Being MTMs you'll totally screw up their dispersion with horizontal mounting. But also, 4" loaded MTMs with a 106 inch screen? Either that screen is way too big for your room or the speakers are way too small. Fours are OK, in sufficient numbers. My center has six, my L/Rs have eight each, with the seating position twelve feet from the screen.

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post #6 of 18 Old 12-25-2012, 05:31 PM - Thread Starter
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Well, wasn't really looking for the out right criticism but thanks. Was looking for thoughts on the mounting options. I will call the Triad rep or wait for someone that has actual Triad knowledge. Thanks.
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post #7 of 18 Old 12-25-2012, 07:37 PM
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Bill speaks the truth. The smallest Triad's you should be looking at for an in-wall LCR theater setup are the Silver/4's.

At 36" tweeter height, you want all the MTM's to be vertical.
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post #8 of 18 Old 12-26-2012, 07:17 AM
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Originally Posted by Jay1 View Post

Bill speaks the truth. The smallest Triad's you should be looking at for an in-wall LCR theater setup are the Silver/4's.
At 36" tweeter height, you want all the MTM's to be vertical.

I agree that it is ideal for all front speakers to be vertical, but very few setups can accommodate this, hence the reason why speaker manufacturers make horizontal speakers.
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post #9 of 18 Old 12-26-2012, 09:41 AM
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With the center speaker 36" off the floor and it being below the 106" screen, it seems you're going to be looking up at the screen at quite a steep angle. I would say 3' is a reasonable height for the speakers and I would also suggest vertical orientation as have others, but then having a 100" screen ABOVE that seems like a major compromise in vertical viewing angle... somewhat like sitting in the front row of a movie theater (or any of the floor-level rows at a stadium seating movie theater).

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post #10 of 18 Old 12-26-2012, 10:18 AM
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Originally Posted by ack_bk View Post

I agree that it is ideal for all front speakers to be vertical, but very few setups can accommodate this, hence the reason why speaker manufacturers make horizontal speakers.
True, they make them that way because it looks good. But not so that it sounds good, because it doesn't.

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post #11 of 18 Old 12-26-2012, 11:45 AM - Thread Starter
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The Triads are already purchased and so is the 106" screen. The viewing distance when seated will be approx 15' to the screen. The screen is to drop in front of the current TV (preventing behind screen placement so I did not go with acoustically transparent material due to the nature of my setup). I have 9' ceilings so basically the three fronts will be mounted just below the bottom edge of the tensioned screen when in the lowered position.

It sounds like the vertical position is the way to go here from what everyone is saying. Just need to sell the wife on the aesthetics now.
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post #12 of 18 Old 12-26-2012, 12:48 PM
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To me the viewing angle with the screen that high seems like a deal breaker (or neck breaker) more so than inadequacy of the speakers... I could live with decent sound at moderate levels, but not with the BOTTOM of the screen at or above eye level.

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post #13 of 18 Old 12-26-2012, 01:42 PM
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Originally Posted by Stephen Hopkins View Post

To me the viewing angle with the screen that high seems like a deal breaker (or neck breaker) more so than inadequacy of the speakers... I could live with decent sound at moderate levels, but not with the BOTTOM of the screen at or above eye level.
My screen center is just a bit more than 6 feet off the floor. It's perfect. Any lower and I have to tilt my head down. I didn't spend $2k on a Stressless to sit in it upright.

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post #14 of 18 Old 12-26-2012, 03:44 PM - Thread Starter
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I think I need to clarify - this is a setup in a living room, not a dedicated theater. I agree, if this was a dedicated room some of these things would be different (screen lower, speaker placement, etc.). But, it is what it is and with the living room theater, some compromises are expected.
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post #15 of 18 Old 12-27-2012, 08:49 AM
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I'm going to be mounting a Klipsch R-5502-W as a center below my screen. Does this model have to be mounted vertically to work correctly? Sorry about hijacking the thread!

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post #16 of 18 Old 12-27-2012, 10:15 AM
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Originally Posted by luvthefloyd View Post

I'm going to be mounting a Klipsch R-5502-W as a center below my screen. Does this model have to be mounted vertically to work correctly?
Yes. If you place it horizontally the dispersion angle of the midbass drivers will be more than halved. Horizontal dispersion is inversely proportional to the width of the radiating plane, so technically speaking horizontally placed drivers are always a compromise. This applet shows what happens when the radiating plane is varied in size:
http://www.acoustics.salford.ac.uk/feschools/waves/flash/diffractionslider.swf

The applet shows the top view of a slot. Making the slot narrower or wider duplicates what happens when you make a driver smaller or larger, or when you make the radiating plane smaller or larger by using fewer or more drivers placed side by side.

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post #17 of 18 Old 12-27-2012, 10:22 AM
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I'll have to take your word on that smile.gif In the case where the the center is vertically oriented but the lower woofer/driver is firing directly into the foot of the bed would a vertical orientation still be preferred?

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post #18 of 18 Old 12-27-2012, 12:26 PM
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Originally Posted by luvthefloyd View Post

I'll have to take your word on that smile.gif In the case where the the center is vertically oriented but the lower woofer/driver is firing directly into the foot of the bed would a vertical orientation still be preferred?
Either way I don't see how the tweeter would be where it should be, on-axis with your listening position. I'd lift the screen higher so you can properly place the speaker.

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