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DIY Compact line array
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drziketon View Drop Down
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Joined: 03 April 2009
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Points: 8 		Post Options Post Options   Thanks (0) Thanks(0)   Quote drziketon Quote  Post ReplyReply Direct Link To This Post Posted: 03 April 2009 at 5:00pm
hay!
i'm  interesting about crossovers in this boxes.do you use all active crossover or you did put some kind of passive crossovers in it?and if there is passive on what frekvencies are they cut off?
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MarjanM View Drop Down
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Points: 7845 		Post Options Post Options   Thanks (0) Thanks(0)   Quote MarjanM Quote  Post ReplyReply Direct Link To This Post Posted: 03 April 2009 at 6:13pm
No passive crossovers.
Marjan Milosevic
MM-Acoustics
www.mm-acoustics.com
https://www.facebook.com/pages/MM-Acoustics/608901282527713
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drziketon View Drop Down
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Points: 8 		Post Options Post Options   Thanks (0) Thanks(0)   Quote drziketon Quote  Post ReplyReply Direct Link To This Post Posted: 04 April 2009 at 9:17am
so you all run in active mode.sorry to ask but how you drive these arrays in bi amp? and if so which output power for the HF?
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MarjanM View Drop Down
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Points: 7845 		Post Options Post Options   Thanks (0) Thanks(0)   Quote MarjanM Quote  Post ReplyReply Direct Link To This Post Posted: 04 April 2009 at 11:34am
Due to lack of funds my boxes are full of compromises and if i have enough money i would have done them differently.
At this moment they are quasi 3 way. That meant that i am running them active two way now. They are wired to be 16 ohm so i drive 4 boxes with 2 amps and have a spare channel at the moment.
I have bridged Peavey GPS3400 (at full power - 3400W) on the low/mid (that is 8x12" drivers) and one channel of the Crest CPX2600 (at 450W) that drives 8xPSD2002.
I have installed a inductance coil in front of the one of the 12's and that way limiting it to produce anything above 300Hz. So that way both of the 12's do the low part 90-300, but just one goes 300-1800Hz.
This box is not ideal in any way to act as a real line array. But it is close to it and sound very good with a bit of eq here and there.

I will repeat this one more time. This box is not ideal and is full with compromises. So if you like to make a real line array it should be done a bit differently and it will cost a lot more.

Componets that i use are mediocre and the results are not stunning. But for the money they can give you a good results. As a matter of fact i was at the big event last night with 12 Vertec 4888 per side and i can swear my boxes can sound better than that.
Very often it is the man behind the system not just the system it self.

Hope i have given enough info.

Regards
Marjan
Marjan Milosevic
MM-Acoustics
www.mm-acoustics.com
https://www.facebook.com/pages/MM-Acoustics/608901282527713
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coyote View Drop Down
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Points: 69 		Post Options Post Options   Thanks (0) Thanks(0)   Quote coyote Quote  Post ReplyReply Direct Link To This Post Posted: 23 October 2009 at 5:28pm
Originally posted by MarjanM MarjanM wrote:

Due to lack of funds my boxes are full of compromises and if i have enough money i would have done them differently.
At this moment they are quasi 3 way. That meant that i am running them active two way now. They are wired to be 16 ohm so i drive 4 boxes with 2 amps and have a spare channel at the moment.
I have bridged Peavey GPS3400 (at full power - 3400W) on the low/mid (that is 8x12" drivers) and one channel of the Crest CPX2600 (at 450W) that drives 8xPSD2002.
I have installed a inductance coil in front of the one of the 12's and that way limiting it to produce anything above 300Hz. So that way both of the 12's do the low part 90-300, but just one goes 300-1800Hz.
This box is not ideal in any way to act as a real line array. But it is close to it and sound very good with a bit of eq here and there.

I will repeat this one more time. This box is not ideal and is full with compromises. So if you like to make a real line array it should be done a bit differently and it will cost a lot more.

Componets that i use are mediocre and the results are not stunning. But for the money they can give you a good results. As a matter of fact i was at the big event last night with 12 Vertec 4888 per side and i can swear my boxes can sound better than that.
Very often it is the man behind the system not just the system it self.

Hope i have given enough info.

Regards
Marjan


What type filter and slope are you using on the 12s at 1800hz?
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MarjanM View Drop Down
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Points: 7845 		Post Options Post Options   Thanks (0) Thanks(0)   Quote MarjanM Quote  Post ReplyReply Direct Link To This Post Posted: 23 October 2009 at 7:40pm
LR 24db it is 3 amp now.


Edited by MarjanM - 23 October 2009 at 7:41pm
Marjan Milosevic
MM-Acoustics
www.mm-acoustics.com
https://www.facebook.com/pages/MM-Acoustics/608901282527713
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sowndman View Drop Down
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Points: 1 		Post Options Post Options   Thanks (0) Thanks(0)   Quote sowndman Quote  Post ReplyReply Direct Link To This Post Posted: 01 July 2013 at 2:30pm
I have 4 Cerwin Vega D-32b. I would like to build 4 line arrays using the existing components.
Each cab has 2 16 ohm er124
1'4 inch screw on mid driver
1 inch 4x4 tweeter.
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tamuks View Drop Down
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Joined: 16 April 2012
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Points: 232 		Post Options Post Options   Thanks (0) Thanks(0)   Quote tamuks Quote  Post ReplyReply Direct Link To This Post Posted: 01 July 2013 at 3:15pm
sorry to intrude guys but may l ask  if it posible to use the vertical lens on a horn loarded cab .lets say one like Mt 122 and what are the advantages  and disadvantages of a horn loaded line array ove a reflex one?Question
K.A.S.S the art of digital sound entertainment
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