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184 Sub ports |
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Doctor Happy 
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Joined: 19 June 2005 Status: Offline Points: 2 |
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 Topic: 184 Sub portsPosted: 19 June 2005 at 6:43pm |
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Can someone point me in the direction of a supplier of 6" diam tubes for the 184 sub? I've started building a pair and I'm damned if I can find any. If I use 4" diam soil pipe instead (which is actually 105mm diam) what should the tube lengths be adjusted to? Thanks in anticipation.
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norty303
Old Croc 
Joined: 18 August 2004 Location: Eastbourne Status: Offline Points: 8800 |
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Posted: 19 June 2005 at 7:19pm |
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You could always build shelf ports instead, removing the need for pipe then. Prob a much easier build
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My laser stuff: Frikkin Lasers
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Tony Wilkes
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Joined: 02 August 2004 Location: West Midlands Status: Offline Points: 4835 |
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Posted: 20 June 2005 at 5:01am |
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No use 6" it is very easy to get hold off, either visit a few building
sites on the cadge or visit your local builders merchant. I got a 10'
length for £13
I find the best stuff to stick the tube in the box is Araldite, not the quick setting stuff but the stuff that stays workable for a few hours. Tony |
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Centauri
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Joined: 29 November 2004 Location: Newcastle Aus Status: Offline Points: 1792 |
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Posted: 20 June 2005 at 7:34am |
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You could always make square ports from timber - 133mm square will give you the same area, and therefore the same length.
Cheers Graeme |
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Dom
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Joined: 25 February 2004 Location: United Kingdom Status: Offline Points: 1700 |
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Posted: 20 June 2005 at 1:27pm |
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Or you can just use the port lengths stated on the plans for 4" ports...
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"It sounded like a million fire engines chasing ten million ambulances through a war zone and it was played at a volume that made the empty chair beside me bleed."
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james folkes
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Joined: 08 January 2005 Location: United Kingdom Status: Offline Points: 3064 |
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Posted: 21 June 2005 at 7:49pm |
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i found that the different port sizes modelled quite differently on bass
box pro, but i was only looking at building one for a fane xb. square ports have much more wall surface area for the same cross sectional area than a round port, for what it's worth. i don't know at what size that argument becomes irrelevant. i would on principle go for the 6", however the 4" version modelled better for my speaker, which i wasn't expecting at all. james. |
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Doctor Happy
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Joined: 19 June 2005 Status: Offline Points: 2 |
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Posted: 22 June 2005 at 8:24am |
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Thanks for your input. I have acquired some 6" underground soil pipe which has an internal diam of 152mm. I guess I just adjust the port length to give the same overall volume of port (is it that critical?)
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Centauri
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Joined: 29 November 2004 Location: Newcastle Aus Status: Offline Points: 1792 |
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Posted: 22 June 2005 at 9:31am |
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The 2mm difference won't have any noticable effect. Don't try to
get same volume - as the port is made larger diameter, the length needs
to INCREASE. Just use the length on the plan.
Cheers Graeme |
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