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Author Topic: 2 LABS placed apart BUT next to walls  (Read 2931 times)

Josh Billings

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2 LABS placed apart BUT next to walls
« on: September 08, 2005, 12:11:40 pm »

I have a venue where they have a little square cutout and i'm thinking about putting the dj back there with the speakers on either side of him (the area is maybe 20' wide).

Anyways, i normally run my 2 labs together on the right hand side of the DJ, do you think running them one on each side (so the speakers have something to sit on) will strain them too much? I know they were made for groups of 4 or more, but i only have 2 and the show is this tuesday.

Like literally they will both be up against walls.
____________________
|-------------------|
|-------------------|
|-------------------|
|-------------------|
|-------------------|
|-------------------|
|__________---------|
          |X------X|
          |___DJ___|

Xs are where the SUBS will be (w/ tops on top of each) so 4 cabinets total

What do you think? Below is how i normally set it up, but i was going to set it up differently to maximize floor space.

____________________
|-------------------|
|---------XX--DJ----|
|-----------------T-|
|-------------------|
|-------------------|
|-------------------|
|__________---------|
          |--------|
          |________|

Sorry for the crude drawings (BTW the T is where i have a top speaker.
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Michael 'Bink' Knowles

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Re: 2 LABS placed apart BUT next to walls
« Reply #1 on: September 08, 2005, 12:20:00 pm »

Josh wrote on Thu, 08 September 2005 09:11

I have a venue where they have a little square cutout and i'm thinking about putting the dj back there with the speakers on either side of him (the area is maybe 20' wide).

Anyways, i normally run my 2 labs together on the right hand side of the DJ, do you think running them one on each side (so the speakers have something to sit on) will strain them too much? I know they were made for groups of 4 or more, but i only have 2 and the show is this tuesday.

Like literally they will both be up against walls.
____________________|-------------------||-------------------||-------------------||-------------------||-------------------||-------------------||__________---------|           |X------X|           |___DJ___|

Xs are where the SUBS will be (w/ tops on top of each) so 4 cabinets total

What do you think? Below is how i normally set it up, but i was going to set it up differently to maximize floor space.
____________________|-------------------||---------XX--DJ----||-----------------T-||-------------------||-------------------||-------------------||__________---------|           |--------|           |________|

Sorry for the crude drawings (BTW the T is where i have a top speaker.



The HTML "pre" command is the one that helps your ASCII drawings to look the way you intend them.

Is your DJ a turntablist or a CD kind of guy? If you aren't worried about turntable LF feedback then I would recommend putting the LABs further back into the corners like this:
____________________|-------------------||-------------------||-------------------||-------------------||-------------------||-------------------||__________---------|           |--------|           |X__DJ__X|


That would load them with the greatest efficiency.

-Bink
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Michael 'Bink' Knowles
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Josh Billings

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Re: 2 LABS placed apart BUT next to walls
« Reply #2 on: September 08, 2005, 02:55:28 pm »

Yeah puttin the turntables in front of the speakers just wouldn't work LF feedback like you said

-Josh
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Bogdan Popescu

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Re: 2 LABS placed apart BUT next to walls
« Reply #3 on: September 11, 2005, 03:16:25 am »

Hi,

If you have the LAB's so close to the DJ make shure he has some ear protection.
I would try to put the LAB's in the corner

------------------------
                     \|
                     x|
                      |
                      |

...staked and with a deflection panel. That is the maximum output you can get from 2 LAB's

BP
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Michael 'Bink' Knowles

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Re: 2 LABS placed apart BUT next to walls
« Reply #4 on: September 11, 2005, 08:20:11 am »

Bogdan P. wrote on Sun, 11 September 2005 00:16

Hi,

If you have the LAB's so close to the DJ make shure he has some ear protection.
I would try to put the LAB's in the corner
------------------------                      \|                      x|                       |                       |

...staked and with a deflection panel. That is the maximum output you can get from 2 LAB's

BP


I'm curious about the deflection panel idea. Can you describe it further?

-Bink
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Phil Pope

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Re: 2 LABS placed apart BUT next to walls
« Reply #5 on: September 11, 2005, 05:14:15 pm »

IMO you should put the LABS on two adjacent walls pointing into the same corner.  If you have the DJ in the cutout then it should be one of the corners opposite them.

I have got a lot of bass feedback from the LABS playing drum and bass.  I reduce it by keeping the LABs at least 20 feet from the DJ  but not so far that they sound delayed to the DJ compared to the tops.  I use a parametric eq if there is till a problem.

I think if you increase the mass of the arm (not the needle force but the mass of metal with rotational inertia there) or get a higher compliance stylus you can move the resonant frequency of the tonearm further away from the musical spectrum though you have to stay away from 6Hz at the other end because that is the frequency of a warped record.  I think about 20Hz is supposed to be optimum.  Can't find too much info about the inertia of a technics 1210 tonearm or the compliance of most famous brand cartridges on the net.  some ortofon carts have compliances twice that of others but the same mass!

Phil
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Randy Pence

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Re: 2 LABS placed apart BUT next to walls
« Reply #6 on: September 12, 2005, 01:42:59 pm »

squash balls under a board help against turntable feedback.  lighter and smaller are rubber bands around a piece of stiff pvc drain pipe.

i can set this up next to just about anything and it will be direct radiation from the monitors that will feedback first.

Monitor feedback on turntables can be nerveracking.  
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Bogdan Popescu

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Re: 2 LABS placed apart BUT next to walls
« Reply #7 on: September 14, 2005, 02:08:50 am »



I'm curious about the deflection panel idea. Can you describe it further?

-Bink[/quote]


  The deflection panel is not my idea. It was posted months ago. The post had also exact dimensions of the panel and the position of the LAB's. I did a quick search but didn't find it yet.Sorry

B.P.
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Bogdan Popescu

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Re: 2 LABS placed apart BUT next to walls
« Reply #8 on: September 14, 2005, 02:26:42 am »

Here it is, the corner loading post:

http://srforums.prosoundweb.com/index.php/m/3329/1800/?SQ=32 4f786f5137d12b033b7815d2cf57e3

good luck
B.P.
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Michael 'Bink' Knowles

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Re: 2 LABS placed apart BUT next to walls
« Reply #9 on: September 14, 2005, 07:30:00 am »

Bogdan P. wrote on Tue, 13 September 2005 23:26

Here it is, the corner loading post:

 http://srforums.prosoundweb.com/index.php/m/3329/1800/?SQ=32 4f786f5137d12b033b7815d2cf57e3

good luck
B.P.


Brilliant! Thanks for looking that one up...
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Michael 'Bink' Knowles
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