4-way active PA. Techno system! Build thread - diyAudio
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Old 27th April 2013, 07:39 PM   #1
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Default 4-way active PA. Techno system! Build thread

I will make this my build thread for my DIY 4 way active PA.

The anchor of the system will be my designed PAL12 tapped horn subs.
Thread here:
$325 Lab 12 based PA tapped horn. ~35hz extension

The system will consist of:

(2) PAL12 subwoofers 30-100hz (Eminence LAB 12)
(2) Double 15" super compact midbass 100-500Hz (celestion 15" ts-be-15300)
(4) 8" sealed back midrange 500-2000ish maybe 2200Hz (Eminence Alpha 8a)
(2) 10" round horn waveguides, 1" compression drivers. 2000hz or 2200hz and up (18 sound ND1070)

Amps:
QSC RMX 4050HD
QSC RMX 1450
QSC RMX 850
Crown D45

Processing:
DBX driverack 260 (4 way mono)

8c 13awg wire for each left and right, will make setup super easy.
All Neutrik Speakon connectors

There are very limited size restrictions (for transport purposes) hence the undersized midbass (and no horns booo!)

Last edited by m R g S r; 15th July 2013 at 11:37 AM.
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Old 27th April 2013, 07:43 PM   #2
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Got one midbass almost complete.
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Might add a little more 18mm bracing
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Old 27th April 2013, 08:14 PM   #3
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How come you're not doing an all horn system?
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Old 27th April 2013, 08:17 PM   #4
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Size restrictions. Believe me I'd love to. Maybe in the future if I get a big van to transport. But for now this will be the absolute largest that I can fit
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Old 28th April 2013, 08:37 PM   #5
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The reason for my size restrictions. Need to fit everything into a 2012 CT200h :0
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Old 28th April 2013, 08:41 PM   #6
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Firs pt midbass 90% complete
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White duratex for the midbass cabinets is on its way. Need to mount to drivers and the heavy duty grills Also need to mount the speaker pole hats in the top of the enclosure.

Last edited by m R g S r; 28th April 2013 at 08:45 PM.
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Old 28th April 2013, 08:48 PM   #7
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This is the way I plan to run the cabinets tapped horn turned down on its side for the base, then the midbass standing up
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Quick pic after I dragged both subs out to test fit in the car....
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Got started on the second midbass as well.
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Last edited by m R g S r; 28th April 2013 at 08:51 PM.
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Old 29th April 2013, 09:34 AM   #8
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great keep it coming
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Old 29th April 2013, 03:24 PM   #9
Osse is offline Osse  Sweden
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Yeah, really interesting stuff! keep em comming and we URGE to hear your comments on SQ/SPL with music!
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Old 29th April 2013, 07:18 PM   #10
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Quote:
Originally Posted by m R g S r View Post
This is the way I plan to run the cabinets tapped horn turned down on its side for the base, then the midbass standing up
I would strongly encourage you to use the sub vertically to get (most) of the mid and high frequencies above head level, or use the sub as a base and put a pole under the mids.

The system below, (also using Lab 12s for LF in a similar size cabinet as the Pal plus waveguides), uses a speaker cord box as a stand to elevate the top cabinets (containing one 10", two 6.5", and two HF drivers) to 67.5 inches high. The cabinets use interlocking dowel pins and ratchet straps to secure the tall system against the crowd and wind.

People can stand only a few feet in front of the system and not hurt their ears, and without the HF being absorbed by them, it carries much further.

The whole system fits in a small trailer, avoiding abusing the interior of my Mustang.
Building the trailer was a lot easier than building any of the cabinets...

Art
Attached Images
File Type: png Small but Tall.png (664.1 KB, 216 views)
File Type: png System in the Trailer.png (414.9 KB, 217 views)

Last edited by weltersys; 29th April 2013 at 07:21 PM.
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