Baffle thickness - 3/4" or 1"

Frosteh · 13th July 2011, 06:06 PM

I'm building David Ralph's Chameleons (SB Acoustics 2-Way Title Page) and he uses 1" MDF for the baffles, but only 3/4" for the rest of the enclosure. I have enough 3/4" MDF left to make the baffles, but will it make a performance difference than using 1"? I have to buy 1" eventually for my subwoofer, but I don't want to have a large piece of unused 3/4" MDF laying around if I can avoid it.

Brett · 13th July 2011, 11:48 PM

3/4 will be fine unless the chassis of the driver is very thick and routing so it's flush will make the rest too thin to secure the driver well. In that case a small partial sheet of 6mm from a hardware store could be laminated onto it to get the required thickness for only a few $ and minimal wastage.

David Gatti · 14th July 2011, 01:50 AM

WHy not glue 2 pieces of 3/4" together for a 1 1/2" baffle?

domtweaker · 14th July 2011, 03:48 AM

Do a 1 1/2 inch its solid and you can never have too much front stability

Ed LaFontaine · 14th July 2011, 04:13 AM

You have options. You can add a brace to overcome any weakness you think the 3/4" mdf will have. I make mine out of hardwood. Thicker at the mid point, tapering slightly to each end

Frosteh · 14th July 2011, 05:16 AM

Just went and bought 1" MDF since I'll be making a subwoofer sometime anyway. Thanks for the help!

a.wayne · 14th July 2011, 05:18 AM

Do 1.5 inch , good stability and makes it easy for baffle offset ...

Mos Fetish · 22nd July 2011, 08:58 AM

I laminated 2 x 18mm sheets for a 36mm baffle. Um, 36mm = 1.5".

Nice and solid, but I routed roundovers behind the woofers and midrange. Then I used t-nuts to hold the drivers in.

13th July 2011, 06:06 PM	#1
Frosteh diyAudio Member Join Date: May 2011 Location: Kirkland, WA	Baffle thickness - 3/4" or 1" I'm building David Ralph's Chameleons (SB Acoustics 2-Way Title Page) and he uses 1" MDF for the baffles, but only 3/4" for the rest of the enclosure. I have enough 3/4" MDF left to make the baffles, but will it make a performance difference than using 1"? I have to buy 1" eventually for my subwoofer, but I don't want to have a large piece of unused 3/4" MDF laying around if I can avoid it.

14th July 2011, 04:13 AM	#5
Ed LaFontaine ...truth seeker... diyAudio Member Join Date: Feb 2004 Location: where the Appalachians rise from the Blue Grass	You have options. You can add a brace to overcome any weakness you think the 3/4" mdf will have. I make mine out of hardwood. Thicker at the mid point, tapering slightly to each end __________________ ...call me Ed...Special Ed... EnABL kit http://www.diyaudio.com/forums/swap-meet/119852-enabl-kit.html DCB1 parts http://www.diyaudio.com/forums/swap-...ml#post2361098

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13th July 2011, 11:48 PM	#2
Brett diyAudio Member Join Date: Jan 2002	3/4 will be fine unless the chassis of the driver is very thick and routing so it's flush will make the rest too thin to secure the driver well. In that case a small partial sheet of 6mm from a hardware store could be laminated onto it to get the required thickness for only a few $ and minimal wastage.

14th July 2011, 01:50 AM	#3
David Gatti diyAudio Member Join Date: Mar 2004 Location: Melbourne, Australia	WHy not glue 2 pieces of 3/4" together for a 1 1/2" baffle?

14th July 2011, 03:48 AM	#4
domtweaker diyAudio Member Join Date: Jan 2006 Location: big city	Do a 1 1/2 inch its solid and you can never have too much front stability

14th July 2011, 05:16 AM	#6
Frosteh diyAudio Member Join Date: May 2011 Location: Kirkland, WA	Just went and bought 1" MDF since I'll be making a subwoofer sometime anyway. Thanks for the help!

14th July 2011, 05:18 AM	#7
a.wayne diyAudio Member Join Date: May 2008 Location: Front Row Center	Do 1.5 inch , good stability and makes it easy for baffle offset ...

22nd July 2011, 08:58 AM	#8
Mos Fetish diyAudio Member Join Date: Feb 2003 Location: New Zealand	I laminated 2 x 18mm sheets for a 36mm baffle. Um, 36mm = 1.5". Nice and solid, but I routed roundovers behind the woofers and midrange. Then I used t-nuts to hold the drivers in.

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