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Location: Potts Point, Sydney
Registered: October 2003
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PVC or MDF?
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Fri, 30 January 2004 07:07
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Hi guys,
Just got around to making sub boxes and just wanted to know what's better to use mdf wood like 35mm, or a pvc pipe that one of my mates told me 'its better than mdf'
Thanx.
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Location: Lost in the K hole
Registered: May 2002
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Re: PVC or MDF?
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Fri, 30 January 2004 07:09

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pvc pipe for a sub box?? wtf?
you making a cannon style boom-tube or a proper tuned box enclosure?
mdf all the way baby. maybe not 35mm thick, but mdf non-the-less
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Location: Potts Point, Sydney
Registered: October 2003
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Re: PVC or MDF?
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Fri, 30 January 2004 07:15

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Yeh...that's what i thought, but one of his mates has one and says its makes the subs sound better than in an mdf box...
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Location: Lost in the K hole
Registered: May 2002
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Re: PVC or MDF?
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Fri, 30 January 2004 08:02

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dimmy77_03 wrote on Fri, 30 January 2004 18:15 | Yeh...that's what i thought, but one of his mates has one and says its makes the subs sound better than in an mdf box...
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he obviously doesnt know how to build very good sub enclosures then
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Location: Melbourne
Registered: October 2003
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Re: PVC or MDF?
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Fri, 30 January 2004 08:49

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sure he wasn't talking about the ports being made out of PVC. thats usually quite acceptable. But for car applications 24mm MDF is the way to go - maybe 18mm if your worried about the weight.
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Location: Lost in the K hole
Registered: May 2002
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Re: PVC or MDF?
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Fri, 30 January 2004 08:52

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what he ^^^^^ said...
but i must say, the ports from jaycar are a damn sight better looking than a hunk of pvc pipe
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Location: Melbourne
Registered: October 2003
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Re: PVC or MDF?
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Fri, 30 January 2004 12:44

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ed_ma61 wrote on Fri, 30 January 2004 19:52 | what he ^^^^^ said...
but i must say, the ports from jaycar are a damn sight better looking than a hunk of pvc pipe
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having said that. I saw a fantastic triple bandpass design that used PVC with 90deg bends. it was all consealed, but the PVC did its job.
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Location: Brisbane
Registered: June 2003
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Re: PVC or MDF?
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Fri, 30 January 2004 12:46

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18mm mdf and use pvc as the bass ports, if its designed for a bass reflex enclosure.
Plastic and fibreglass enclosures are crap, nothing else.
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Location: Potts Point, Sydney
Registered: October 2003
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Re: PVC or MDF?
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Sat, 31 January 2004 05:03

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V8_MA61 wrote on Fri, 30 January 2004 23:46 | 18mm mdf and use pvc as the bass ports, if its designed for a bass reflex enclosure.
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Thanx heaps guys...i'll go with the 18mm mdf...maybe a bit bigger just to be safe and the ports out of pvc. 
Thanx again.
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Location: Melbourne
Registered: January 2003
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Re: PVC or MDF?
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Sat, 31 January 2004 06:59

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Use glass. Real thick glass.
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Location: Wollongong
Registered: May 2002
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Re: PVC or MDF?
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Sat, 31 January 2004 07:13

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Damn a glass box would be heavy 
Seriously though, I've seen a totally perspex box before (like 1 inch thick, laser cut stuff) and it looked great.
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Location: Melbourne
Registered: January 2003
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Re: PVC or MDF?
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Sat, 31 January 2004 07:19

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Perspex is a good alternative. If u just gonna dump a box and have it just purely for bass not for appearance go for mdf. U get nice doofy bass from that. Otherwise for spl wise. Glass .
How much does a laser cut perspex box made to 60l for a 12 inch cost? anyone have a rough figure?
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Location: Brisbane
Registered: June 2003
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Re: PVC or MDF?
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Sat, 31 January 2004 09:06

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make sure you find out if the speaker is designed for any of the following! Sealed/ Bass reflex/ infinite baffle!
A sealed speaker in a bass reflex box will sound shit
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Location: Brisbane, QLD, Australia
Registered: May 2002
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Re: PVC or MDF?
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Sat, 31 January 2004 11:44

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You guys heard of foamex?
It's foamed PVC that comes in thicknesses like MDF is. And it's got a solid skin on it, so it looks like laminated wood at first. Very easy to work with.
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Toymods Social Secretary
Location: Sydney
Registered: July 2002
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Re: PVC or MDF?
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Sun, 01 February 2004 13:47

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i still doubt i can make a complete finished and carpeted box in less than 2 hours with it though..... (i can with MDF)
18mm MDF is perfect.
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Location: Sydney
Registered: November 2003
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Re: PVC or MDF?
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Sun, 01 February 2004 23:52
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I remember an electronic techician I worked with had 2 woofers (yes just normal woofers) inline inside a big cardboard tube. funny thing was it cranked more bass than the other subs in the workshop.
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