T45 stack

Post your build odyssey here.
Message
Author
User avatar
Bryan Cox
Posts: 450
Joined: Sun Nov 22, 2015 3:01 pm
Location: Owensville, Mo

Re: T45 stack

#31 Post by Bryan Cox »

Eeek. That's no Bueno, man. If I were in your position, I'd draw out the horn path on the side with a pencil, cut out a piece that'll allow you to slip in the braces, then seal back up with the cutout and PL.

At this point you have a couple options: do nothing and hope; find a way to install the braces; build a new box.
Otop 12 x 4 (Delta Pro 12-450a) 2x melded, 2x straight
Titan 39 x 4 (3012LF) 20" wide

User avatar
J_Dunavin
Posts: 1260
Joined: Sun Jul 09, 2006 3:13 pm
Location: Appleton WI
Contact:

Re: T45 stack

#32 Post by J_Dunavin »

All of the internal braces?
Bryan’s idea would work, but I’d honestly suggest cutting off one whole side as close as you can to the side, to open it all back up. Brace everything then glue a new side piece on. If you can make a clean cut your box may only end up a 1/4 inch narrower than the other.
I’m just not sure how to tell you to make that kind of cut.
A really big band saw?
2 - OTop8
2 - T39
8 - DR200
2 - DR250
9 - T24
6 - T45
1 - Auto Tuba

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

Re: T45 stack

#33 Post by jimbo7 »

nortonw3 wrote: Wed Apr 27, 2022 11:17 amHowever when constructing the 2nd box, I realized I forgot to add the internal braces (not the visible ones) on the first box.
Image

J_Dunavin wrote: Wed Apr 27, 2022 8:21 pm All of the internal braces?
Bryan’s idea would work, but I’d honestly suggest cutting off one whole side as close as you can to the side, to open it all back up. Brace everything then glue a new side piece on. If you can make a clean cut your box may only end up a 1/4 inch narrower than the other.
I’m just not sure how to tell you to make that kind of cut.
A really big band saw?
To add to that I'd cut out the side as close to the panels as possible, add braces, then cut a new full size side panel and slap it on. It'll be a 1/2" wider than the others, but it'll be a good reminder every time you look at it.
edit: maybe that's what j_dunavin just said
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

User avatar
J_Dunavin
Posts: 1260
Joined: Sun Jul 09, 2006 3:13 pm
Location: Appleton WI
Contact:

Re: T45 stack

#34 Post by J_Dunavin »

Great minds think alike 😄
Ya I think he needs to de skin one side somehow, but how do you make a clean cut that big? Does anyone have a 24” plus band saw?
2 - OTop8
2 - T39
8 - DR200
2 - DR250
9 - T24
6 - T45
1 - Auto Tuba

User avatar
Tom Smit
Posts: 7457
Joined: Sat Jan 05, 2008 1:24 pm
Location: Sarnia, Ont. Canada

Re: T45 stack

#35 Post by Tom Smit »

Use a hand saw, starting at each corner and working towards the centre. One could temporarily add a straight edge/ cutoff or some such, to the side edge, to act as an initial guide for the handsaw.
TomS

User avatar
Seth
Posts: 2731
Joined: Thu Sep 10, 2009 8:06 pm
Location: Sacramento, California, USA
Contact:

Re: T45 stack

#36 Post by Seth »

Interesting how many solutions are coming to light. All of them sound great! My mind went a way different direction.
Screenshot (176).png
I would probably double up the braces in the mouth, between panel 6/12 & 7/12, to take care of bracing panel 6 & 7. Cut open the dead space next to the driver chamber (to the left of panel 5) and add braces between panel 2 & 3... maybe something on 4, although I wouldn't worry about bracing 4 all that much.

You can probably slip some bracing bits through the driver hole to tie panel 3/6 together near the driver. Easy enough.

Between 2 & 8, above the driver chamber... the dowel deal might work well enough. Or cut half inch slits to drop the braces in from the outside and cut them off flush with an oscillating tool/saw once the PL has cured. If you're good with filler and sandpaper, no one will ever know there was a surgery. Could do the same between 1/10, but that area is certainly less stressed and might be able to be overlooked.
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

tallevan
Posts: 92
Joined: Sun Oct 20, 2019 12:15 pm
Location: London, England

Re: T45 stack

#37 Post by tallevan »

Tom Smit wrote: Wed Apr 27, 2022 9:25 pm Use a hand saw, starting at each corner and working towards the centre. One could temporarily add a straight edge/ cutoff or some such, to the side edge, to act as an initial guide for the handsaw.
I would use Tom's approach.
A cheap handsaw will cut through brads as well, and if you are careful the side you are skimming off AND carefully placed battens on the inside panels will act as guides.

To expand on what Tom and other said:
1) Reach inside the horn and screw some temporary guides/battens on panels 6 and 7 leaving a gap a little smaller than the kerf of your handsaw blade between the batten and the inside of side you are trying to remove.
2) Screw a batten/guide on the OUTSIDE of panel 8 around 9/16" from the edge, to allow the same kerf gap as step 1.
3) Starting at the point near panel 9, saw through panel 8 and all the inside braces. Your handsaw should be long enough to do this.
4) You will have two panels left, 10 and 12. Use the same technique with these sides, easier becaues there are no more internal braces to cut.

If you are careful, you might even be able to save the side, with a little light sanding. Personally I'd cut a new one.

User avatar
AntonZ
Posts: 2664
Joined: Sun May 14, 2006 6:00 am
Location: NL

Re: T45 stack

#38 Post by AntonZ »

Yet another approach for sacrificing the current side panel and cutting a new one. Quite quick and simple. Use your router, not bandsawzilla.

On the side panel draw the lines for all the interior panels (so it looks like Seth's pic). Put a cheap straight router bit of 1/2" or a tad more in your router. Set depth to 1/2" and make your router cuts along the lines. Tacking a straight edge on the cab side panel will help you cut straight at all the right places. This will clear your side panel from the inner panels. Be aware that pieces of the panel may drop into the cab as they come loose. Make sure you don't tilt the router at this point.

To finish it off the joints with the sides can be done with a circular saw. Do that last. If you use the parallel guide and set it close (1/2" minus the blade width) then you can make the cut from the front/bottom/top/back, cutting into the side panel instead of all the other panels. The cab will still have all the original dimensions.

Alternatively, you could make the router cuts for the outer joints as well, just leave a few spots in place to prevent the entire panel dropping near the end. That would be a rather unsafe moment with a router bit spinning at full speed. The last cuts may require some extra care, e.g. manual cutting. Respect the force of the router and keep all your limbs intact.

There may be brads on the joints, hence the cheap router bit. Cuts fine through brads. It may not be the sharpest bit in the box after the act. No problem for a cheap bit.

User avatar
Seth
Posts: 2731
Joined: Thu Sep 10, 2009 8:06 pm
Location: Sacramento, California, USA
Contact:

Re: T45 stack

#39 Post by Seth »

AntonZ wrote: Thu Apr 28, 2022 3:55 am ...Use your router...
OOOH! I like that option Anton. :thumbsup: Could get that sucker off and not have to sacrifice any cab width at all. Might even be able to use what's left of the side afterward to make the braces.
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

User avatar
AntonZ
Posts: 2664
Joined: Sun May 14, 2006 6:00 am
Location: NL

Re: T45 stack

#40 Post by AntonZ »

Seth wrote: Thu Apr 28, 2022 4:47 am Might even be able to use what's left of the side afterward to make the braces.
Just what I was thinking right after I posted my suggestion. Great minds think alike :noob:

Bruce Weldy
Posts: 8301
Joined: Fri Nov 27, 2009 11:37 am
Location: New Braunfels, TX

Re: T45 stack

#41 Post by Bruce Weldy »

AntonZ wrote: Thu Apr 28, 2022 3:55 am Put a cheap straight router bit of 1/2" or a tad more in your router. Set depth to 1/2" and make your router cuts along the lines.
:clap: :clap: :clap:

This is absolutely the best solution.

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."

tallevan
Posts: 92
Joined: Sun Oct 20, 2019 12:15 pm
Location: London, England

Re: T45 stack

#42 Post by tallevan »

Now I agree with Anton. Nailed it.

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

Re: T45 stack

#43 Post by jimbo7 »

My next suggestion would've been this:

Image
(edit: not my pic)
Last edited by jimbo7 on Sat Apr 30, 2022 8:53 pm, edited 1 time in total.
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

User avatar
J_Dunavin
Posts: 1260
Joined: Sun Jul 09, 2006 3:13 pm
Location: Appleton WI
Contact:

Re: T45 stack

#44 Post by J_Dunavin »

Humm I haven’t tried that method 😄
2 - OTop8
2 - T39
8 - DR200
2 - DR250
9 - T24
6 - T45
1 - Auto Tuba

User avatar
Bill Fitzmaurice
Site Admin
Posts: 28620
Joined: Tue May 02, 2006 5:59 pm

Re: T45 stack

#45 Post by Bill Fitzmaurice »

I have, with design prototypes that didn't meet expectations. You can't win them all.

Post Reply