Plywood thickness

Our easiest to build speaker lineup.
Post Reply
Message
Author
vinceom
Posts: 8
Joined: Mon Jul 11, 2022 9:53 am
Location: Normandy, France

Plywood thickness

#1 Post by vinceom »

Hi Bill

I’m going to build a Simplexx 1x12 ported and thicknesses of plywood I can purchase in my town are 10 mm and 15 mm. Not 12 mm close to 1/2 inch. 15 mm is better than 10 mm of course for the sound but what about internal volume? Can I use you external dimensions and size of the ports with a 15 mm thickness? Internal volume will be smaller and frequency tune will change …
Thanks
Vinceom

User avatar
Bill Fitzmaurice
Site Admin
Posts: 28699
Joined: Tue May 02, 2006 5:59 pm

Re: Plywood thickness

#2 Post by Bill Fitzmaurice »

Th internal volume won't change enough to be a concern. Just maintain the same port area.

You should have your location shown on your profile so that others in your region may be of assistance.

vinceom
Posts: 8
Joined: Mon Jul 11, 2022 9:53 am
Location: Normandy, France

Re: Plywood thickness

#3 Post by vinceom »

Thanks ! I edited my location but not sure that there are many cabs BFM builders in Normandy 😃

Ben
Posts: 46
Joined: Tue Mar 17, 2009 6:45 pm
Location: Lakeside, CA

Re: Plywood thickness

#4 Post by Ben »

Just curious. Could you use 10mm ply with a little extra bracing to save weight rather than using 15mm ply? Or would the extra bracing weigh enough to not make it worth the effort? Also, I assume this is baltic birch ply, but the OP doesn't state it.
Built:
Jack 12 (2)
Wedgehorn 6 (4)

User avatar
Bill Fitzmaurice
Site Admin
Posts: 28699
Joined: Tue May 02, 2006 5:59 pm

Re: Plywood thickness

#5 Post by Bill Fitzmaurice »

50% more bracing would allow 10mm.

Post Reply