I moved my 21's, trying to see if 7 point sources and different placements make a major difference - AVS Forum
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post #1 of 8 Old 06-28-2012, 12:19 AM - Thread Starter
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I moved them to the far left and right front stage, I'll have to run some sweeps, but for now this will have to do.
I haven't had a chance to boom it yet, but I think it sounds a touch better than just 2 days ago. The problem is, this placement isn't very practical.

I often find that the "best looking" layout is not ever nearly what the "best sounding" layout is, or... that the best place for it is often what impedes the pratical use of the room layout. DOH!!!
This is like the millionth layout config I've tried, damn you Physics. grr!!!

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post #2 of 8 Old 06-28-2012, 06:17 AM
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Hahaha nice. Just add more subs wink.gif

BTW, whats up with the random mother board and parts in the floor?
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post #3 of 8 Old 06-28-2012, 06:56 AM
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You gotta run sweeps and measure. Compare graphs after moving them all around and repeat. Put them in the least aesthetically pleasing locations so long as it sounds the best. There's no reason to try to keep the room looking nice when it's over run with speakers and miles of speaker wire.
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post #4 of 8 Old 06-28-2012, 09:10 AM
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Are your subs gain matched? It appears in your other vids that the lms is working harder. What is your approach to finding placement? Are you placing the subs with the most output in the locations that have the most gain and using others to fill in the response? I think some have found that more than 4 or so placements is not that necessary, start stacking if you got the output then pull down peaks. Acoustic foam makes lousy bass traps and is not very broadband. Fill those corners with lots of pink fluffy instead. I used GIK 244 bass traps with 4" air gap behind them for specular reflections and I used ~9 rolls of this in corners and 9" layer on top of my drop ceiling with a 9" air gap above for bass traps. Worked great.

http://www.homedepot.com/webapp/wcs/stores/servlet/ProductDisplay?productId=202585906&storeId=10051&langId=-1&catalogId=10053

http://www.avsforum.com/t/1354504/corner-bass-traps

http://www.avsforum.com/t/1402574/corner-bass-traps-made-out-of-linacoustic

http://www.avsforum.com/t/1363500/faced-vs-un-faced-fluffy-pink-insulation

Good luck.
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post #5 of 8 Old 06-28-2012, 04:41 PM - Thread Starter
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Quote:
Originally Posted by Baleful View Post

Hahaha nice. Just add more subs wink.gif
BTW, whats up with the random mother board and parts in the floor?

I just upgraded my computer, those are the old parts.
This is the "man cave", i have to work within the space I have. wink.gif
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post #6 of 8 Old 06-28-2012, 04:43 PM - Thread Starter
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Quote:
Originally Posted by Looneybomber View Post

You gotta run sweeps and measure. Compare graphs after moving them all around and repeat. Put them in the least aesthetically pleasing locations so long as it sounds the best. There's no reason to try to keep the room looking nice when it's over run with speakers and miles of speaker wire.

Well, when I say "usable", and mean like, you can walk into it and still use all the exits wink.gif Other than that, all options are on the table.
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post #7 of 8 Old 06-28-2012, 04:54 PM - Thread Starter
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Quote:
Originally Posted by Luke Kamp View Post

Are your subs gain matched? It appears in your other vids that the lms is working harder. What is your approach to finding placement? Are you placing the subs with the most output in the locations that have the most gain and using others to fill in the response? I think some have found that more than 4 or so placements is not that necessary, start stacking if you got the output then pull down peaks. Acoustic foam makes lousy bass traps and is not very broadband. Fill those corners with lots of pink fluffy instead. I used GIK 244 bass traps with 4" air gap behind them for specular reflections and I used ~9 rolls of this in corners and 9" layer on top of my drop ceiling with a 9" air gap above for bass traps. Worked great.
http://www.homedepot.com/webapp/wcs/stores/servlet/ProductDisplay?productId=202585906&storeId=10051&langId=-1&catalogId=10053
http://www.avsforum.com/t/1354504/corner-bass-traps
http://www.avsforum.com/t/1402574/corner-bass-traps-made-out-of-linacoustic
http://www.avsforum.com/t/1363500/faced-vs-un-faced-fluffy-pink-insulation
Good luck.

I don't have the height to do a 18" drop. I could do 5 with 5 at most.

They are unfortunately not level matched, I don't have the money to do it proper (yet). The LMS is getting 2-4 times the power of anything else, it's doing a lot of heavy lifting on the deep end, but it's not by itself completely. One day, One day...
The 21's are definitely power limited right now, underpowered by ~75%
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post #8 of 8 Old 06-28-2012, 05:16 PM - Thread Starter
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Quote:
Originally Posted by Luke Kamp View Post

What is your approach to finding placement? Are you placing the subs with the most output in the locations that have the most gain and using others to fill in the response? I think some have found that more than 4 or so placements is not that necessary, start stacking if you got the output then pull down peaks.

My approach is basically trying all permutations, stacked, unstacked, clustered, distributed, far as possible, close as possible; in phase, out of phase, same xo's, different xo's, playing with delays, and all combinations thereof.
There is no amount of time I won't spend tweaking, it never ends. A continuous improvement type thing.
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