Tuba 45 Build

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Pabloaguas
Posts: 40
Joined: Tue Dec 22, 2020 2:31 am

Tuba 45 Build

#1 Post by Pabloaguas »

Hey Everyone,

We are building a couple of Tuba 45's! Check out the photos of our build:
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Pabloaguas
Posts: 40
Joined: Tue Dec 22, 2020 2:31 am

Re: Tuba 45 Build

#2 Post by Pabloaguas »

More pics
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Last edited by Pabloaguas on Mon Jan 25, 2021 12:50 am, edited 1 time in total.

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Seth
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Location: Sacramento, California, USA
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Re: Tuba 45 Build

#3 Post by Seth »

Dang Paul... looking good man :thumbsup: Thanks for sharing the build.

I look forward to hearing your impression.
Last edited by Seth on Thu Feb 11, 2021 3:37 pm, edited 1 time in total.
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

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Seth
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Location: Sacramento, California, USA
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Re: Tuba 45 Build

#4 Post by Seth »

Looks like you made a little custom modification. Did you shrink the 45" dimension down an inch or two? Are you just making room for an inset grill frame?
IMG_8111.jpeg
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

Pabloaguas
Posts: 40
Joined: Tue Dec 22, 2020 2:31 am

Re: Tuba 45 Build

#5 Post by Pabloaguas »

Really awesome to work with Robert Renick on this (photo left). He is a master cabinet builder with decades of experience. From his guitar building experience, he came up with the idea of using go-bars to press the panels down for glue-up, which meant we could do a full glue up in a couple of hours rather than several days.

The pics don't show it very well, but the tolerances and workmanship on these Tubas are really A+

More pics to come!
Attachments
IMG_8104.jpeg

Pabloaguas
Posts: 40
Joined: Tue Dec 22, 2020 2:31 am

Re: Tuba 45 Build

#6 Post by Pabloaguas »

Seth wrote: Mon Jan 25, 2021 12:51 am Looks like you made a little custom modification. Did you shrink the 45" dimension down an inch or two? Are you just making room for an inset grill frame?

IMG_8111.jpeg
Good eye Seth!

Yes, the back of my compact suv is just 43.5 inches wide, so we did slim them down to 43". We did the modification at the mouth to accommodate.

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Seth
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Location: Sacramento, California, USA
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Re: Tuba 45 Build

#7 Post by Seth »

Pabloaguas wrote: Mon Jan 25, 2021 1:48 am
Seth wrote: Mon Jan 25, 2021 12:51 am Looks like you made a little custom modification. Did you shrink the 45" dimension down an inch or two? Are you just making room for an inset grill frame?

IMG_8111.jpeg
Good eye Seth!

Yes, the back of my compact suv is just 43.5 inches wide, so we did slim them down to 43". We did the modification at the mouth to accommodate.
Smart solution. I like it. I highly doubt it will effect performance any noticeable amount. Clean mod. Well done :thumbsup:
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

himhimself
Posts: 599
Joined: Fri Nov 13, 2015 9:34 pm
Location: Vancouver BC & Bloomington IN

Re: Tuba 45 Build

#8 Post by himhimself »

Had to look up go-bars. Never heard of them. Pretty cool, looks like you used giant ones all the way to the ceiling. Found this link with some good info for the unfamiliar:

http://www.pegasusguitars.com/making-go-bars.html

I just use a mad assortment of 10-15 pound dumbells and bar plates... :D
2xT30 (20", 3012LF)
2xT30 (21", 3012LF)
4xOtop J-array (Beta12, melded/straight piezos)
Truck Tuba (MCM)
Next up: 2xJack12 or family of table tubas

Pabloaguas
Posts: 40
Joined: Tue Dec 22, 2020 2:31 am

Re: Tuba 45 Build

#9 Post by Pabloaguas »

More Pics:
Attachments
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142571209_1125910214533846_9075800366470292494_n.jpg (28.6 KiB) Viewed 1999 times

Grant Bunter
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Location: Ilfracombe Queensland Australia
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Re: Tuba 45 Build

#10 Post by Grant Bunter »

As far as the adhesive goes, are you using PL premium?
Unfortunately, your location isn't listed, where are you?

As long as the adhesive is an expanding polyurethane type it will be ok, but don't be in a rush to take you clamps off.
The longer the items are clamped, the more the adhesive penetrates the nearby materials, leading to stronger joints.
Most of these types gain the majority of their strength in the first 24 hours, but take up to 7 days to cure...
Built:
DR 250: x 2 melded array, 2x CD horn, March 2012 plans.
T39's: 4 x 20" KL3010LF , 2 x 28" 3012LF.
WH8: x 6 with melded array wired series/parallel.
Bunter's Audio and Lighting "like"s would be most appreciated...

jimbo7
Posts: 849
Joined: Fri Dec 28, 2012 10:45 am
Location: St. Louis

Re: Tuba 45 Build

#11 Post by jimbo7 »

himhimself wrote: Mon Jan 25, 2021 8:37 am http://www.pegasusguitars.com/making-go-bars.html

I just use a mad assortment of 10-15 pound dumbells and bar plates... :D

That's pretty cool. You'd need a really big cube to fit a max sized T48 in, though. :shock:

Gym weight are a hot commodity right now. You could sell them, build some "go bars", then used all the leftover money for new drivers! :lol:
BFM builds:
XF212
T24 BP102 24"
2x SLA's 6-5" mids, 9- gt-302's
2x AT 14" MCM 55-2421
TrT 5" MCM 55-2421
AT 18" JBL GTO804
2x OT12 flat array
2x SLA Pro 2-Alpha 6's 2-Goldwoods
2x T39 24" 3012lf
Simplex 10 BP102

Pabloaguas
Posts: 40
Joined: Tue Dec 22, 2020 2:31 am

Re: Tuba 45 Build

#12 Post by Pabloaguas »

Grant Bunter wrote: Mon Jan 25, 2021 4:11 pm As far as the adhesive goes, are you using PL premium?
Unfortunately, your location isn't listed, where are you?

As long as the adhesive is an expanding polyurethane type it will be ok, but don't be in a rush to take you clamps off.
The longer the items are clamped, the more the adhesive penetrates the nearby materials, leading to stronger joints.
Most of these types gain the majority of their strength in the first 24 hours, but take up to 7 days to cure...
Yes, using pl premium and clamping for about 15-24 hours depending on our workflow. I'm located in Ashland, Oregon... Robert's shop is in the city of Mount Shasta.

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Seth
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Location: Sacramento, California, USA
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Re: Tuba 45 Build

#13 Post by Seth »

It's been a couple days... I've gotta imagine you put the other side on and made your access door flanges...

Making any noise yet?
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

Rob Shasta Guitar
Posts: 46
Joined: Wed Apr 20, 2016 4:34 pm

Re: Tuba 45 Build

#14 Post by Rob Shasta Guitar »

Hello Seth, this is Rob. There is a little over an hour and a mountain pass between Ashland and Mount Shasta. Between foul-weather and the shop production schedule, we will be closing these up this weekend. Bold move, but there will be no access port.
Sla Pro 5" drivers, t39 10" driver

himhimself
Posts: 599
Joined: Fri Nov 13, 2015 9:34 pm
Location: Vancouver BC & Bloomington IN

Re: Tuba 45 Build

#15 Post by himhimself »

Rob Shasta Guitar wrote: Wed Feb 03, 2021 10:19 am . Bold move, but there will be no access port.
Oooo, are you sure? I've gone back into my T30s and had to snug the screws holding the driver. Not much, but then again, I don't have massive hours on them either. Also, I seem to recall some concern with curing PL offgassing and causing deterioration on the drivers. Maybe someone else has more info or personal experience with that, but I'd check before sealing the whole thing up. Good luck, can't wait to hear your review of how they sound when complete.
2xT30 (20", 3012LF)
2xT30 (21", 3012LF)
4xOtop J-array (Beta12, melded/straight piezos)
Truck Tuba (MCM)
Next up: 2xJack12 or family of table tubas

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