8" Cement Form Tubes

[Corey69 10+ year member]

Just put mdf on each end and put the sub in one and an aeroport in the other.

 

[dleccord 5,000+ posts]

Just put mdf on each end and put the sub in one and an aeroport in the other.

nice. my buddy's 53 setup looked like that, without the form tubes though.

 

[lilmaniac2 5,000+ posts]

howd u attach the mdf to the tube?

 

[Corey69 10+ year member]

nice. my buddy's 53 setup looked like that, without the form tubes though.

The guy with that crx has pvc tubes now but the cardboard form tubes worked pretty good.

howd u attach the mdf to the tube?

I think he cut a piece that fit around the outside of the tube and glued the wood to it.

 

[Fattony911 10+ year member]

Any idea of the #'s that thing put up?

 

[mrogowski 5,000+ posts]

I'm actually surprised at how many folks *aren't* using Sonotubes et al for their car audio projects. They are widely used for Home Theatre sub projects - large ones for the enclosure (18", 20" 24") and the smaller units for the ports (6", 8" 10").

Chad:

As per what the other poster stated, you create a "plug" for the ends - two pieces of MDF; one larger than the diameter of the tube and the second that fits inside the tube. Glue the two together and there you have it. Instant enclosure in a couple of hours. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

Here's an on-line Sonotube Calculator I use periodically to determine tube sizes for enclosures:

http://www.quux.net/roo/diy/sonosub/sonocalc.html

Sonotube ports:

Sonotubes are great for ports - they are cheap and come in a variety of sizes. As a couple of folks have mentioned, some brands have the "extended" sizes - one tube fits inside the other. These provide excellent choices of sizes since a '6' tube measures 6", '6+' tube measures ~6.5", '8' tube measures 8", '8+' measures ~8.5", etc.

Collo has extensive information on his site regarding port flaring. Very interesting read. He has also created Sonosub design software which is very good:

http://www.subwoofer-builder.com/flare-testing.htm

Regarding trying to flair a Sonotube, I think you would have problems since you are only dealing with cardboard, and we all know what happens to cardboard when it gets wet.

Best,

Mark

 

[req 5,000+ posts]

you could try using paper mache on a mould and attach it to the cardboard and then resin\glass it to make it nice and strong?

 

[malic 10+ year member]

http://www.stevemeadedesigns.com/board/index.php?showtopic=58&st=60

check it out

 

[Corey69 10+ year member]

Any idea of the #'s that thing put up?

152.4db sealed at the dash.