Front speakers too wide? - AVS Forum
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post #1 of 13 Old 06-23-2013, 04:23 AM - Thread Starter
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Just wondering if the front left and right speakers can be too wide apart?

My room is a rectangle with the centre in the centre of the wall, the left and right in the corners toed in to the listening position.

Would it be beneficial to bring them into the centre a bit?
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post #2 of 13 Old 06-23-2013, 06:45 AM
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In general, the rule is that the distance from the center of one speaker to the other should be the same as the distance from a speaker to your ears.

I other words, you and the speakers should form an equilateral triangle.

It is also useful to have the midrange driver of the speakers aimed at your ear height, as this will improve the clarity of the sound.

Those may involve adjusting the speaker position or tilting the speakers back somewhat.
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post #3 of 13 Old 06-23-2013, 07:12 AM
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Quote:
Originally Posted by Krismc1 View Post

Just wondering if the front left and right speakers can be too wide apart?

Yes.

If you put them too far apart, you get what is often known as "A hole in the middle". Pretty self-descriptive!

One rule of thumb is to put the speakers and the listener at the corners of an equilateral triangle.

If you use an AVR as the centerpiece of your system, for extra good sound you put a center channel speaker between the L & R speakers. The AVR will matrix up a center channel from 2 channel sources, or find one in multichannel sources. You will usually get an extra good stereo image. One major benefit will be extra good intelligibility.
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post #4 of 13 Old 06-23-2013, 07:21 AM
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Another benefit of moving the speakers closer together in your particular situation is getting them out of the corners. You'll have less room reflections and more acurate bass.
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post #5 of 13 Old 06-23-2013, 11:47 AM - Thread Starter
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Distance from my seating position to the centre is 9.8ft

The distance between the centre and the left speaker is 8.8 ft and centre and right is also 8.8ft.
So distance between left and right is around 17ft.

Listening to a stereo source however the sound does sound like it comes from where the centre is, but I'm concerned about left and right sounds during 5.1 playback not quite being right.

Levels and distance are all set by audyssey

My kit is
Denon 2113 avr
Q acoustics 2020i L,R, surrounds and the q acoustics 2000c for centre.

All fronts are wall mounted at ear level
The rears however are to the sides up high aimed just above listening position.
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post #6 of 13 Old 06-23-2013, 12:04 PM
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Quote:
Originally Posted by Krismc1 View Post

Would it be beneficial to bring them into the centre a bit?
Sure, moving your L/R speakers about 3ft in from the side walls will not only result in smoother frequency response (fewer/smaller peaks & dips) but also give you the equilateral triangle (60 degree spread) mentioned previously.

Sanjay
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post #7 of 13 Old 06-23-2013, 12:05 PM
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Quote:
Originally Posted by Krismc1 View Post

Distance from my seating position to the centre is 9.8ft

The distance between the centre and the left speaker is 8.8 ft and centre and right is also 8.8ft.
So distance between left and right is around 17ft.

Listening to a stereo source however the sound does sound like it comes from where the centre is, but I'm concerned about left and right sounds during 5.1 playback not quite being right....

The distance doesn't sound too wide. Also you say "... 5.1 playback not quite being right...." This could be a timbre miss match. Your best match would be to use a Q acoustics 2020i as a center.
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post #8 of 13 Old 06-23-2013, 12:28 PM
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Quote:
Originally Posted by William View Post

The distance doesn't sound too wide. Also you say "... 5.1 playback not quite being right...." This could be a timbre miss match. Your best match would be to use a Q acoustics 2020i as a center.

His seating position is 9.8' from the centre channel and the fronts are 17' apart. Thats too wide by a long shot for the ideal equailateral triangle.
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post #9 of 13 Old 06-23-2013, 12:30 PM - Thread Starter
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I may try bringing them in a bit. But as you can see there's a window in my way wink.gif

The centre speaker is designed to be used as the centre for my speakers. So I'd imagine the timbre shouldn't too far off.

I'll try moving the left and right in a bit but as you can see I have a window that prevents me moving them too close to the tv (60" for the benefit of scale)


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post #10 of 13 Old 06-23-2013, 12:50 PM
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Even just bringing them in to the edge of the curtains( and slightly forward from the front wall if possible) will help. We all have compromises with our set ups and just do the best we can with what we have. Run room correction again after moving them, if your receiver has it.
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post #11 of 13 Old 06-23-2013, 01:00 PM
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Quote:
Originally Posted by nodnerb View Post

His seating position is 9.8' from the centre channel and the fronts are 17' apart. Thats too wide by a long shot for the ideal equailateral triangle.
Sorry, I misread (or didn't read through) as 8.8'.
Quote:
Originally Posted by Krismc1 View Post

I...The centre speaker is designed to be used as the centre for my speakers. So I'd imagine the timbre shouldn't too far off...
True, but nothing matches exactly like the exact speaker. Detected centers are a compromise that's not needed in your case.

You can test by switching to Phantom Center. If it still sounds wrong in 5.1 then it probably placement but if it sounds more correct then it could be the center,
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post #12 of 13 Old 06-23-2013, 01:19 PM
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I'm having trouble loading your images. It looks like your speakers are on stands. Is that correct? Have you run Audyssey, and listened to a 5.1 surround movie after running Audyssey? You do need to move those speakers in - ideally, in front of those curtains. 17 feet is way too far apart.



Took a slightly blurry pic - and I measured the distance apart for my front speakers. 10 feet. The left and right speakers are 11.5 feet away from the main listening position.
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post #13 of 13 Old 06-23-2013, 02:38 PM - Thread Starter
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My speakers are wall mounted. I can move them in around a foot and a half each so brings them to 15ft apart so still 6ft wider than the triangle rule.

I wonder if its worth the effort to just get each speaker 18" closer to the centre?

They're toed in to my seating position and the stereo image is great.

I'll try a 5.1 movie tomorrow ill need to find one that's got good sound panning to judge it crossing the front stage.

Atleast I've managed to keep them all at ear level
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