15mm ply for 2x12 cab build?

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NippleWrestler
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15mm ply for 2x12 cab build?

Post by NippleWrestler »

Too thin? Just right? I ask because I have access to some 15mm of good quality and wondered if that material, qlonf with 1x1 battened corners with an internal bracing structure to which the baffles would be attached, would be strong/stiff enough to not be shit.

And of course silicone sealant on all joins to make it airtight.

So yeah, 15mm good or ungood?

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Re: 15mm ply for 2x12 cab build?

Post by robthemac »

NippleWrestler wrote: Fri Jul 29, 2022 4:28 pm Too thin? Just right? I ask because I have access to some 15mm of good quality and wondered if that material, qlonf with 1x1 battened corners with an internal bracing structure to which the baffles would be attached, would be strong/stiff enough to not be shit.

And of course silicone sealant on all joins to make it airtight.

So yeah, 15mm good or ungood?
From a structural integrity perspective or sonic perspective?

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Re: 15mm ply for 2x12 cab build?

Post by NippleWrestler »

robthemac wrote: Fri Jul 29, 2022 5:15 pm
NippleWrestler wrote: Fri Jul 29, 2022 4:28 pm Too thin? Just right? I ask because I have access to some 15mm of good quality and wondered if that material, qlonf with 1x1 battened corners with an internal bracing structure to which the baffles would be attached, would be strong/stiff enough to not be shit.

And of course silicone sealant on all joins to make it airtight.

So yeah, 15mm good or ungood?
From a structural integrity perspective or sonic perspective?
Both I suppose.

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Re: 15mm ply for 2x12 cab build?

Post by Slowy »

NippleWrestler wrote: Fri Jul 29, 2022 4:28 pm Too thin? Just right? I ask because I have access to some 15mm of good quality and wondered if that material, qlonf with 1x1 battened corners with an internal bracing structure to which the baffles would be attached, would be strong/stiff enough to not be shit.

And of course silicone sealant on all joins to make it airtight.

So yeah, 15mm good or ungood?
All my cabs are 15mm.
Good. :thumbup:
"We were playing so loud that just one note on the guitar was sufficient".
Ritchie Blackmore.

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Re: 15mm ply for 2x12 cab build?

Post by Kris »

I made 3x 1x15" cabs from 15mm, sturdy enough for the xxl rage cross!!!
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Re: 15mm ply for 2x12 cab build?

Post by NippleWrestler »

Slowy wrote: Fri Jul 29, 2022 5:24 pm
NippleWrestler wrote: Fri Jul 29, 2022 4:28 pm Too thin? Just right? I ask because I have access to some 15mm of good quality and wondered if that material, qlonf with 1x1 battened corners with an internal bracing structure to which the baffles would be attached, would be strong/stiff enough to not be shit.

And of course silicone sealant on all joins to make it airtight.

So yeah, 15mm good or ungood?
All my cabs are 15mm.
Good. :thumbup:
Legend. Thank you Mr Slow.

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Re: 15mm ply for 2x12 cab build?

Post by Slowy »

NippleWrestler wrote: Fri Jul 29, 2022 5:33 pm
Slowy wrote: Fri Jul 29, 2022 5:24 pm
NippleWrestler wrote: Fri Jul 29, 2022 4:28 pm Too thin? Just right? I ask because I have access to some 15mm of good quality and wondered if that material, qlonf with 1x1 battened corners with an internal bracing structure to which the baffles would be attached, would be strong/stiff enough to not be shit.

And of course silicone sealant on all joins to make it airtight.

So yeah, 15mm good or ungood?
All my cabs are 15mm.
Good. :thumbup:
Legend. Thank you Mr Slow.
My pleasure Mr. Nipple.
"We were playing so loud that just one note on the guitar was sufficient".
Ritchie Blackmore.

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Re: 15mm ply for 2x12 cab build?

Post by Bg »

I don't think an extra 3mm of ply makes any difference. For a closed back cab, its all about its construction. Are you dampening internally too? Its worth testing, I've used it a couple of times - think it came from livesound, but I'm sure something like Batts would have the same effect.

For battened corners I'll generally go the whole hog and dowel as well as internal screws and lots of glue.
So, is that low alcohol or no alcohol at all? mmmm, no alcohol, do you want to try it? Noooooooooo.

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Re: 15mm ply for 2x12 cab build?

Post by NippleWrestler »

Bg wrote: Fri Jul 29, 2022 5:56 pm I don't think an extra 3mm of ply makes any difference. For a closed back cab, its all about its construction. Are you dampening internally too? Its worth testing, I've used it a couple of times - think it came from livesound, but I'm sure something like Batts would have the same effect.

For battened corners I'll generally go the whole hog and dowel as well as internal screws and lots of glue.
Not dampening with fabric or pink batts or anything, it'll be bare material.

And battened corners like this:

Image

With an internal frame to strengthen everything. That one was solid macrocarpa, doweled, glued, and screwed, then battened, then caulked around all the joins. It was a good ol' cab.

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Re: 15mm ply for 2x12 cab build?

Post by Bg »

I'm not saying you should, its just worth experimenting with. I noticed no difference but some do.

Yep glued, screwed, doweled, battened. Thats going nowhere.
So, is that low alcohol or no alcohol at all? mmmm, no alcohol, do you want to try it? Noooooooooo.

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Re: 15mm ply for 2x12 cab build?

Post by WellyBlues »

Kris wrote: Fri Jul 29, 2022 5:29 pm I made 3x 1x15" cabs from 15mm, sturdy enough for the xxl rage cross!!!
My ears hurt just looking at the photo :lol:
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Re: 15mm ply for 2x12 cab build?

Post by Snarblinge »

What about 12.5mm for a single 10" ? just piggybacking on this and seeking opinions.

I have oinly built baby cabs (4x1" / 6" / 8") but picked up a few 10's planning to use the 12.5 I have but could justify a new sheet.
b.

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Re: 15mm ply for 2x12 cab build?

Post by Slowy »

Snarblinge wrote: Sun Jul 31, 2022 2:14 pm What about 12.5mm for a single 10" ? just piggybacking on this and seeking opinions.

I have oinly built baby cabs (4x1" / 6" / 8") but picked up a few 10's planning to use the 12.5 I have but could justify a new sheet.
Don't see why not. It might be a bit light for a full size 4x12 but excellent for a small cab.
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Re: 15mm ply for 2x12 cab build?

Post by Reg18 »

I built a 2x12 out of 12.5 once and it sounded very alive!
It was paired with a Vox head so it suited that sound just fine, it didn’t chug the same as a heavier/dead cab does though.

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Re: 15mm ply for 2x12 cab build?

Post by wavesofffear »

Classic Marshall cabs were 5/8" (~15.9mm) ply and they sound pretty good!

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