OTop 12 Build (Hit Major Snag)
OTop 12 Build (Hit Major Snag)
Ok...this is my official start to my Otop 12's. Just need one more sheet of BB and my two kits. How many hours would you all guestimate this would likely take? I have no bookings next weekend, so I'd really like to knock out the pair then. Should that be doable over a Friday-Sunday?
Last edited by doncolga on Sat May 07, 2011 1:51 pm, edited 3 times in total.
Donny Collins
Built:
Two 18" Tuba 30's 3012 LF
Two 26" Tuba 30's Lab 12
Two OmniTop 12's DL 2512 (Melded Array)
Presonus Studio One DAW
Harrison Consoles MixBus 32C DAW
Built:
Two 18" Tuba 30's 3012 LF
Two 26" Tuba 30's Lab 12
Two OmniTop 12's DL 2512 (Melded Array)
Presonus Studio One DAW
Harrison Consoles MixBus 32C DAW
- Chris_Allen
- Posts: 3358
- Joined: Wed Jul 11, 2007 2:43 pm
- Location: Huddersfield, UK
Re: OTop 12 Build
All depends on your tools and capability. With my table saw, router, sanders and nail gun, I could probably build some basic Omni Tops in an 4-6 hours, with another 4-6 hours to finish off (corners, hats, paint, driver, foam, wiring). Doing the piezo array is an overnight job though as you need the adhesive to dry/set. This also depends on whether you are a perfectionist! I certainly aren't.
Friday to Sunday if you are doing both at once sounds feasible - but be warned, if you've never built them before, you risk duplicating mistakes!
Friday to Sunday if you are doing both at once sounds feasible - but be warned, if you've never built them before, you risk duplicating mistakes!
Built:
6xDR200, 2xT39, 2xT48, 2xJack110, 1xOmni10.5, 1xAutotuba, 1xT18, 1xSLA Pro, 1xW8, 1xW10
6xDR200, 2xT39, 2xT48, 2xJack110, 1xOmni10.5, 1xAutotuba, 1xT18, 1xSLA Pro, 1xW8, 1xW10
Re: OTop 12 Build
Get a buddy so cokes in the cooler (beer cooler for the end of the night) and have some Burgers and Dogs to keep ya goin and should not be too bad.
As for the Baffle plate are you doing old design (slot loaded) or new design (Phase Plug). The new ones I could see taking a bit of time for that. Might ask Leland to CNC you a couple and then should be no problem. He was selling the Jack ones I think.
Start early (but rested) take your time and have fun. They sound really good.
As for the Baffle plate are you doing old design (slot loaded) or new design (Phase Plug). The new ones I could see taking a bit of time for that. Might ask Leland to CNC you a couple and then should be no problem. He was selling the Jack ones I think.
Start early (but rested) take your time and have fun. They sound really good.
Re: OTop 12 Build
with actual dedication (who has that lol) I'd say you could have a pair of otops up and running in 4 hours easy (assuming you do the piezio array in a time slot not included in that). I believe it was wi who said he could build at THT in something like 4 hours, and the OTops are way easier than that.
Built:
2x Tuba 30s delta12lf loaded (gone)
4x Otop12 d2512 loaded
8x t48s (18, 18, 24, 24, 30, 30) 3015lf loaded
2x AT (1 mcm, 1 gto 804)
2x SLA Pro (dayton pa6, 6 goldwood piezo loaded)
1x bastard XF208
2x OT212 (delta pro 450a loaded, eminence psd)
2x Tuba 30s delta12lf loaded (gone)
4x Otop12 d2512 loaded
8x t48s (18, 18, 24, 24, 30, 30) 3015lf loaded
2x AT (1 mcm, 1 gto 804)
2x SLA Pro (dayton pa6, 6 goldwood piezo loaded)
1x bastard XF208
2x OT212 (delta pro 450a loaded, eminence psd)
Re: OTop 12 Build
I'll probably give it a whirl this coming Friday on #1, then see how we go from there. I've sold my current tops and have cleaned up my old EV 15" tops to hold me over in case I can't get them done. My first December gig is December 9, so I have one weekend. If my EV's are OK, I may just gig with them this month, that way I can take my time on the OTops....I'm leaning in that direction. Then of course I could sell my EV tops after that, and hope to have yet another set of tops and another amp or two to sell...that would be great....might even fund another two Tubas.sine143 wrote:with actual dedication (who has that lol) I'd say you could have a pair of otops up and running in 4 hours easy (assuming you do the piezio array in a time slot not included in that). I believe it was wi who said he could build at THT in something like 4 hours, and the OTops are way easier than that.
Donny Collins
Built:
Two 18" Tuba 30's 3012 LF
Two 26" Tuba 30's Lab 12
Two OmniTop 12's DL 2512 (Melded Array)
Presonus Studio One DAW
Harrison Consoles MixBus 32C DAW
Built:
Two 18" Tuba 30's 3012 LF
Two 26" Tuba 30's Lab 12
Two OmniTop 12's DL 2512 (Melded Array)
Presonus Studio One DAW
Harrison Consoles MixBus 32C DAW
Re: OTop 12 Build
OT12s were my second build. The first two took me months to finish 
The third one I built took me about 4 hours to build the cabinet itself. I still haven't finished (or even ordered the piezos) the array... but my outdoor gigs I was building the big setup for got cancelled. Stupid economy.
Don't rush them too much, but try to get the carcass done in a day. It's important to make sure everything is square. It's easy to get it out of alignment - and building it quickly allows you to make adjustments before the glue is completely set.

The third one I built took me about 4 hours to build the cabinet itself. I still haven't finished (or even ordered the piezos) the array... but my outdoor gigs I was building the big setup for got cancelled. Stupid economy.
Don't rush them too much, but try to get the carcass done in a day. It's important to make sure everything is square. It's easy to get it out of alignment - and building it quickly allows you to make adjustments before the glue is completely set.
Bobby Shively
Purveyor of fine aged hip hop
Traktor S4 - Vestax VCI-100 - TTX - MOTU Ultralite - Yamaha 01V
Built:
T39 13" BP102, 24" 3012LF - AT - OT12 2512 - SLA Pro - T24 - Jack 10
Powered by XTi 1000 & 2000
Purveyor of fine aged hip hop
Traktor S4 - Vestax VCI-100 - TTX - MOTU Ultralite - Yamaha 01V
Built:
T39 13" BP102, 24" 3012LF - AT - OT12 2512 - SLA Pro - T24 - Jack 10
Powered by XTi 1000 & 2000
- Drey Chennells
- Posts: 1377
- Joined: Sun May 17, 2009 10:12 pm
- Location: Central FL ~Authorized Builder
- Contact:
Re: OTop 12 Build
building quantities we've found it most efficient to assemble each basic part all at once, then assemble the system like a kit:
-all wiring cut and terminated as needed ready to go
-jack cups/connectors
-xovers
-arrays
-finished cabs
you can definitely get your 2 OT12s done over the weekend if you have all the glues, paints, damping, screws etc. you need in advance of assembly..
and they sound incredible..
my .02
-all wiring cut and terminated as needed ready to go
-jack cups/connectors
-xovers
-arrays
-finished cabs
you can definitely get your 2 OT12s done over the weekend if you have all the glues, paints, damping, screws etc. you need in advance of assembly..
and they sound incredible..
my .02
"Things happen, but music stays in your blood forever~." bf
InfraCoustik
Consulting/Design/Fabrication
Authorized BF Builder
http://www.infracoustik.com/
info@infracoustik.com
InfraCoustik
Consulting/Design/Fabrication
Authorized BF Builder
http://www.infracoustik.com/
info@infracoustik.com
- Dave Non-Zero
- Posts: 1939
- Joined: Thu Jul 13, 2006 4:59 am
- Location: Dundee, Scotland
- Contact:
Re: OTop 12 Build
i never understand these timescales. I feel like I work quickly, but i must stand around in a coma or something because it always takes me ages to get each panel done! maybe its a size issue, since my TAT build went reallt fast compared to everything else ive made. I keep meaning to try a couple of ot12s since i have a couple of delta pro12s lying around waiting for me to put them in dr280s!
-1 for thought terminating cliches.
Built and/or own:
8 x T48 24" 3015LF
6 x DR280
2 x DR250 old style beta10
2 x T36s 20" delta15L
1 x TAT
1 x dual Lab12 30" T60
In Progress:
2 x DR280
Built and/or own:
8 x T48 24" 3015LF
6 x DR280
2 x DR250 old style beta10
2 x T36s 20" delta15L
1 x TAT
1 x dual Lab12 30" T60
In Progress:
2 x DR280
Re: OTop 12 Build
As always its never the actual putting together of the items that takes time, its searching for the crap that isnt right at hand that adds time. Take an hour to gather anything and everything you need right in arms reach and make sure you dont run out of anything. These are the time killers it seems. I've only done a a few Jack 12's and a Tuba 30 but i would venture to say that I'd be able to get them done in the time you specified.
Re: OTop 12 Build
+1 probably spent 4 hours building my first t48 and 4 hours searching for the damn nail gun.mems wrote:As always its never the actual putting together of the items that takes time, its searching for the crap that isnt right at hand that adds time. Take an hour to gather anything and everything you need right in arms reach and make sure you dont run out of anything. These are the time killers it seems. I've only done a a few Jack 12's and a Tuba 30 but i would venture to say that I'd be able to get them done in the time you specified.
Built:
2x Tuba 30s delta12lf loaded (gone)
4x Otop12 d2512 loaded
8x t48s (18, 18, 24, 24, 30, 30) 3015lf loaded
2x AT (1 mcm, 1 gto 804)
2x SLA Pro (dayton pa6, 6 goldwood piezo loaded)
1x bastard XF208
2x OT212 (delta pro 450a loaded, eminence psd)
2x Tuba 30s delta12lf loaded (gone)
4x Otop12 d2512 loaded
8x t48s (18, 18, 24, 24, 30, 30) 3015lf loaded
2x AT (1 mcm, 1 gto 804)
2x SLA Pro (dayton pa6, 6 goldwood piezo loaded)
1x bastard XF208
2x OT212 (delta pro 450a loaded, eminence psd)
- camrynekai
- Posts: 367
- Joined: Wed Aug 30, 2006 9:59 am
- Location: Burnt Hills N.Y.
Re: OTop 12 Build
My Otop 2X12's took me about 4 hrs. each not including the piezo array's and finish...but my Titan build was forever
It was my fault because I way overbuilt them with cleats, biscuits, dados, custom handles and rear castors...all of which took more time then I anticipated.

Facebook Page
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My herd of T48's
Cabs built
14- 24" T48's 3015LF's
6- OTop 2X12's W/Straight array's
4- OTop 12's W/melded array's
2- OTop 12's W/Straight array's
2- 29" Sla Pro's
1- Auto tuba ITW
More Bass then Fitzmaurice??? Click here
My herd of T48's
Cabs built
14- 24" T48's 3015LF's
6- OTop 2X12's W/Straight array's
4- OTop 12's W/melded array's
2- OTop 12's W/Straight array's
2- 29" Sla Pro's
1- Auto tuba ITW
- Dave Non-Zero
- Posts: 1939
- Joined: Thu Jul 13, 2006 4:59 am
- Location: Dundee, Scotland
- Contact:
Re: OTop 12 Build
in 4hours i'd probably get the baffle and spacer ring done. 

-1 for thought terminating cliches.
Built and/or own:
8 x T48 24" 3015LF
6 x DR280
2 x DR250 old style beta10
2 x T36s 20" delta15L
1 x TAT
1 x dual Lab12 30" T60
In Progress:
2 x DR280
Built and/or own:
8 x T48 24" 3015LF
6 x DR280
2 x DR250 old style beta10
2 x T36s 20" delta15L
1 x TAT
1 x dual Lab12 30" T60
In Progress:
2 x DR280
- Bill Fitzmaurice
- Site Admin
- Posts: 28916
- Joined: Tue May 02, 2006 5:59 pm
Re: OTop 12 Build
In a four hour period I spend one cumulative hour trying to find the pencil I put down thirty seconds before.Dave Non-Zero wrote:in 4hours i'd probably get the baffle and spacer ring done.

Memory is the second thing to go.
I forget what the first is.
Re: OTop 12 Build
I'm selling a ton of my gear (of course buying a ton too), so I hope to get my two kits ordered tomorrow and have them my Friday?...along with a sheet of BB. I have read, reread and reread the plans, so hopefully I'll move pretty quick. It would be so awesome to have a set of these by Sunday night.
Donny Collins
Built:
Two 18" Tuba 30's 3012 LF
Two 26" Tuba 30's Lab 12
Two OmniTop 12's DL 2512 (Melded Array)
Presonus Studio One DAW
Harrison Consoles MixBus 32C DAW
Built:
Two 18" Tuba 30's 3012 LF
Two 26" Tuba 30's Lab 12
Two OmniTop 12's DL 2512 (Melded Array)
Presonus Studio One DAW
Harrison Consoles MixBus 32C DAW
Re: OTop 12 Build
make sure you order early tmrw morning! shipping time is gonna be tight haha.
Built:
2x Tuba 30s delta12lf loaded (gone)
4x Otop12 d2512 loaded
8x t48s (18, 18, 24, 24, 30, 30) 3015lf loaded
2x AT (1 mcm, 1 gto 804)
2x SLA Pro (dayton pa6, 6 goldwood piezo loaded)
1x bastard XF208
2x OT212 (delta pro 450a loaded, eminence psd)
2x Tuba 30s delta12lf loaded (gone)
4x Otop12 d2512 loaded
8x t48s (18, 18, 24, 24, 30, 30) 3015lf loaded
2x AT (1 mcm, 1 gto 804)
2x SLA Pro (dayton pa6, 6 goldwood piezo loaded)
1x bastard XF208
2x OT212 (delta pro 450a loaded, eminence psd)