need help with system in a 3k sqft room 2 huge nulls - AVS Forum
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post #1 of 9 Old 08-31-2013, 09:05 PM - Thread Starter
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ok heres a quick drawing and no it s not to scale , and yes my drawing skills suck



the black is the outer walls, and the piece that hangs into the room is part of that wall , the table in the center on the left is the dj table
above and below that the red rectangles represent the 3 micro wreckers per side , and the mains are the black dots, theese are stacked ontop of the micros

ive got 300w rms to each main , and 450w rms to each micro

right infront of the dj table sound is great , then u see the 2 blue lines.
in between these 2 blue lines bass is gone , u can feel the floor shake like mad but cant hear it.

from the second blue line on the right to the green line sound is great again , and then from the green line to the back wall its gone again , its about a 5-7 ft span i drew the green line in the wrong place

any ideas ?
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post #2 of 9 Old 08-31-2013, 09:08 PM
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Can you spread those micros out onto other walls?

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post #3 of 9 Old 08-31-2013, 09:11 PM - Thread Starter
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i take it ur meaning from the left wall behind the dj table to the wall on the bottom then face them twards the top of the drawing?
i could do that but what kind of funky delays would i need
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post #4 of 9 Old 08-31-2013, 10:18 PM
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read all of this!

http://forum.blu-ray.com/showthread.php?t=48286

then if possible move the whole system for to about 20% of the way into the room...and move the bottom subwoofer array up toward the table...

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post #5 of 9 Old 08-31-2013, 10:23 PM
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Subs should be coupled for maximum output.
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post #6 of 9 Old 08-31-2013, 11:29 PM - Thread Starter
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Quote:
Originally Posted by LTD02 View Post

read all of this!

http://forum.blu-ray.com/showthread.php?t=48286

then if possible move the whole system for to about 20% of the way into the room...and move the bottom subwoofer array up toward the table...

thank u that was a good read and still have some to read on it.next time i dj in that room i am going to try all 8 microwreckers with a pair in every corner with the phase reversed on the back wall, when ever i dj there i have a day before to setup

moving them into the room further is not an option , it gets very crowded in that room so moving the system and setup inboard off the wall is a no go
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post #7 of 9 Old 09-03-2013, 09:27 PM - Thread Starter
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i ended up stacking all 6 subs in the lower left corner and corner loading them , holy crap what a difference , i have one minor null at the very back of the room that is about 2 ft wide across the width of the room.
i can live with that for sure. only downside is now i dont have anything to put my mains ontop of , ill have to use some of my leftover wood from the micros and build some stands to get my mains back in the air

i also made the mistake of standing in that corner with all 6 at war volume , talk about an experience lol
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post #8 of 9 Old 09-04-2013, 05:07 AM
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Quote:
Originally Posted by Manic1! View Post

Subs should be coupled for maximum output.
Sometimes yes, sometimes no. It depends on the room size and the system bandwidth. In medium sized pro-sound, where rooms tend to be fairly large and bandwidth only goes to 30-35Hz, single clusters tend to work best, as explained here:
http://www.prosoundweb.com/article/in_search_of_the_power_alley/

In very large pro-sound venues, where the room is at least 4 wavelengths wide and the sub stacks can be placed at least 2 wavelengths apart, split clusters regain the advantage. In home theater sized rooms, where the room is 2 wavelengths and less in dimension, multiple subs will usually work best when separated as far as possible,

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post #9 of 9 Old 09-04-2013, 05:14 AM
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