2 Jack 112s - 3012HO with melded array

Post your build odyssey here.
Post Reply
Message
Author
shane2943
Posts: 265
Joined: Fri Jun 18, 2010 10:32 am

2 Jack 112s - 3012HO with melded array

#1 Post by shane2943 »

Started the build on a pair of Jack 112s with the 3012HO and melded piezo array. These will be for general use, but will spend most of their time in the small ballrooms of the event space featured in my T39 build thread. I went with the Jacks because they seemed the best fit for sub-less small PA with high efficiency. One of the "gigs" that these will be in is sitting on the bed cover of my pickup in a local parade in June. Not looking for main stage volume, but definitely want the music to be heard as we go by and I don't think the Jacks will have any issue delivering on that.

On to the first baby step pitchers... :hyper:
Attachments
PXL_20250507_165814859.jpg
PXL_20250510_020925742.jpg
Top
Bruce Weldy
Posts: 8597
Joined: Fri Nov 27, 2009 11:37 am
Location: New Braunfels, TX

Re: 2 Jack 112s - 3012HO with melded array

#2 Post by Bruce Weldy »

Looks like a good start.

6 - T39 3012LF
4 - OT12 2512
1 - T24
1 - SLA Pro
2 - XF210

"A system with a few knobs set up by someone who knows what they are doing is always better than one with a lot of knobs set up by someone who doesn't."
Top
shane2943
Posts: 265
Joined: Fri Jun 18, 2010 10:32 am

Re: 2 Jack 112s - 3012HO with melded array

#3 Post by shane2943 »

Progress
Attachments
1000002376.jpg
Top
User avatar
Seth
Posts: 3069
Joined: Thu Sep 10, 2009 8:06 pm
Location: Sacramento, California, USA
Contact:
Contact Seth

Re: 2 Jack 112s - 3012HO with melded array

#4 Post by Seth »

Way to go Shane. Looking good 👍
Build in process - 2 WH6, one Alpha 6a loaded, one PRV Audio 6MB250-NDY loaded

Two 2x6 shorty SLA Pro's
One T39, 16", 3012LF loaded
Tall AutoTuba, 20" wide, 2x 8" MCM 55-2421
TruckTuba, 8½" wide, 2x 8" MCM 55-2421
Top
shane2943
Posts: 265
Joined: Fri Jun 18, 2010 10:32 am

Re: 2 Jack 112s - 3012HO with melded array

#5 Post by shane2943 »

I love seeing that horn mouth!

And the saying is true, you can NEVER have enough clamps
Attachments
1000002439.jpg
1000002438.jpg
Top
shane2943
Posts: 265
Joined: Fri Jun 18, 2010 10:32 am

Re: 2 Jack 112s - 3012HO with melded array

#6 Post by shane2943 »

Movin' right along
Attachments
1000002440.jpg
1000002442.jpg
Top
Keryn O'Shea
Posts: 591
Joined: Sat Jan 26, 2013 5:50 pm
Location: Brisbane, Australia

Re: 2 Jack 112s - 3012HO with melded array

#7 Post by Keryn O'Shea »

shane2943 wrote: ↑Sun May 11, 2025 4:44 pm ...you can NEVER have enough clamps
You have an impressive array alright!
Good to see another has the build bug, great work there mate :)
AT8 14", AT10 19", T30 28" LAB12, T48 36" 3015LF, THT 20" LAB15, SLA 4x3"/4x4", CArray 6x4", TLAH, TLAP, J10 FA, J12 FA, OT8 CD, OT12 FA, OT15 CD, SLAP 2x6"/4x6", WH8, DR280 MA, XF210. Next J10L
Top
shane2943
Posts: 265
Joined: Fri Jun 18, 2010 10:32 am

Re: 2 Jack 112s - 3012HO with melded array

#8 Post by shane2943 »

Keryn O'Shea wrote: ↑Mon May 12, 2025 11:59 pm You have an impressive array alright!
Good to see another has the build bug, great work there mate :)
Thank you sir. The screw bar clamps at Harbor Freight are actually pretty good and are a steal.

MOAR PITCHERS

Sides, throat reflectors, phase plugs, and driver spacers installed. Plus, tweeter madness!
Attachments
1000002452.jpg
1000002445.jpg
1000002447.jpg
1000002449.jpg
1000002451.jpg
Top
shane2943
Posts: 265
Joined: Fri Jun 18, 2010 10:32 am

Re: 2 Jack 112s - 3012HO with melded array

#9 Post by shane2943 »

Starting to get excited!
Attachments
1000002457.jpg
1000002456.jpg
1000002454.jpg
Top
shane2943
Posts: 265
Joined: Fri Jun 18, 2010 10:32 am

Re: 2 Jack 112s - 3012HO with melded array

#10 Post by shane2943 »

Mental note: when cutting the piezos on the table saw, WEAR EYE PROTECTION (I mean, wear it all the time anyway, but especially when cutting those). Sometimes the blade likes to spin out and then hurdle the screws at you at 5000 miles an hour. :shock: :shock: :shock: :shock:
Top
User avatar
Tom Smit
Posts: 7623
Joined: Sat Jan 05, 2008 1:24 pm
Location: Sarnia, Ont. Canada

Re: 2 Jack 112s - 3012HO with melded array

#11 Post by Tom Smit »

Oooo, something tells me that you found out the hard way.
TomS
Top
shane2943
Posts: 265
Joined: Fri Jun 18, 2010 10:32 am

Re: 2 Jack 112s - 3012HO with melded array

#12 Post by shane2943 »

Tom Smit wrote: ↑Thu May 15, 2025 11:45 pm Oooo, something tells me that you found out the hard way.
Let's just say I'm real glad I had those safety glasses on :shock: :noob:
Top
shane2943
Posts: 265
Joined: Fri Jun 18, 2010 10:32 am

Re: 2 Jack 112s - 3012HO with melded array

#13 Post by shane2943 »

First time ever making a melded array. I was quite intimidated by this part and felt anxious about but they turned out pretty good!
Attachments
1000002458.jpg
Top
himhimself
Posts: 643
Joined: Fri Nov 13, 2015 9:34 pm
Location: Vancouver BC & Bloomington IN

Re: 2 Jack 112s - 3012HO with melded array

#14 Post by himhimself »

Looking good!
2xT30 (20", 3012LF)
2xT30 (21", 3012LF)
4xOtop J-array (Beta12, melded/straight)
Truck Tuba (MCM)
Next up: 2xJack12L or family of table tubas
Top
User avatar
Tom Smit
Posts: 7623
Joined: Sat Jan 05, 2008 1:24 pm
Location: Sarnia, Ont. Canada

Re: 2 Jack 112s - 3012HO with melded array

#15 Post by Tom Smit »

Good job on that melded array!
TomS
Top
Post Reply

Return to “Build Threads”