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Author Topic: 5.1 home theater speaker placement  (Read 4653 times)

Shad Hall

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5.1 home theater speaker placement
« on: April 06, 2010, 04:50:03 PM »

hi,

referencing the picture of our tv room (10x10'), which was a bedroom, audio-science-wise, can we place the speakers in the ceiling corners without any losing quality? i realize that optimal speaker placement according to the manual, would be speakers a & b to be on tv-wall and speakers c & d to be on side walls with speaker e (center) on tv. but the issue with speaker "d" on the side wall is it would be between the door jam and the light switch and i can almost guarantee that it will get ripped off the wall from people not paying attention to where they're walking...gotta love the human species. Razz

thanks

p.s. this is they only forum room i thot was applicable for this thread. move it if necessary. cheers Smile


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Shad Hall
Live Sound Tech
Roseville Community Church - Mackie 808-S
Elim Trinity Church - A&H GL2800
Sacramento, CA

"I'm an idealist. Get used to me wanting something better."

Lee Buckalew

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Re: 5.1 home theater speaker placement
« Reply #1 on: April 07, 2010, 07:06:22 AM »

Unless this has changed, If you want true and proper layout for 5.1 you don't use side wall speakers except for THX and then the sidewall speakers need to be dipolar (that's dipolar, not bipolar) firing parallel to the wall.
For standard speakers and 5.1 your rear speakers are actually properly positioned 60 degrees off of centerline (drawn from the center channel speaker through the rear of the room) and behind the listening position.
For 7.1 you add in side wall speakers to this.

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Lee Buckalew
Pro Sound Advice, Inc.
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Shad Hall

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Re: 5.1 home theater speaker placement
« Reply #2 on: April 07, 2010, 06:33:22 PM »

thanks for the reply. i think i've conceived an idea that will work without canceling out signals. i may post an update later after i get it installed.

cheers
Very Happy
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Shad Hall
Live Sound Tech
Roseville Community Church - Mackie 808-S
Elim Trinity Church - A&H GL2800
Sacramento, CA

"I'm an idealist. Get used to me wanting something better."

Lee Buckalew

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Re: 5.1 home theater speaker placement
« Reply #3 on: April 07, 2010, 06:42:57 PM »

Shad,
The issue is not about cancellation it's about hearing the mix the way it was engineered.  If that does not matter or it just can't be accomplished then moving the speakers to a position that works for your situation is necessary.  Everything about audio is compromise in some way or another.

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Lee Buckalew
Pro Sound Advice, Inc.
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Shad Hall

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Re: 5.1 home theater speaker placement
« Reply #4 on: April 07, 2010, 07:06:04 PM »

well, i guess i was thinking that there was a specific speaker placement as the manual suggested. it does have the dts logo, but not thx. so i'll just test them out for best placement and go from there, unless you have specific suggestions. Smile


cheers!
Very Happy
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Shad Hall
Live Sound Tech
Roseville Community Church - Mackie 808-S
Elim Trinity Church - A&H GL2800
Sacramento, CA

"I'm an idealist. Get used to me wanting something better."

Lee Buckalew

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Re: 5.1 home theater speaker placement
« Reply #5 on: April 07, 2010, 08:49:10 PM »

There are very specific layouts for each format, 3.1, 5.1, 7.1. These also can be processed with different formats.
THX is a certification standard not a speaker layout but, for consumers, THX used to require dipolar side wall speakers instead of rears and the speakers could not use horns.  I don't know if that's still the case.

DTS is an encode decode digital processing format.  So is Dolby Pro Logic, Dolby Digital, Dolby Pro Logic II, Surround EX, DTS ES, DTS ES Discrete and Dolby Pro Logic IIx.  Each of these also have suggested speaker layouts, many of which differ from each other.  It's virtually impossible to have a system configured for every scenario.

Do your best to emulate whichever surround format you most often use, rent, download, etc.

Again, compromise.

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Lee Buckalew
Pro Sound Advice, Inc.
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Shad Hall

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Re: 5.1 home theater speaker placement
« Reply #6 on: April 08, 2010, 12:00:35 AM »

hey lee,

thanks for all of your educational feedback. ya learn something new every day. Smile thanks Very Happy
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Shad Hall
Live Sound Tech
Roseville Community Church - Mackie 808-S
Elim Trinity Church - A&H GL2800
Sacramento, CA

"I'm an idealist. Get used to me wanting something better."

ProSoundWeb Community

Re: 5.1 home theater speaker placement
« Reply #6 on: April 08, 2010, 12:00:35 AM »


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