Design of Rectangular ports for a BassReflex Box |
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Steve_B
Old Croc Joined: 29 September 2007 Status: Offline Points: 1587 |
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June is ages
away. I tend to
follow threads that I have contributed to and was puzzled when I couldn’t see
any of my posts in one of the other threads thinking it was this one. As I said
I’m not as young and sharp as I once was. If you wire
two drive units in parallel in one cabinet double the volume that you would use
for a single drive unit and then tune the port to the same frequency as you
would for a single drive unit. In the formula that you posted, the value of Vb doubles
and Fb stays the same. The other variables can be what you want. If you alter
the diameter (area) of the port, that will affect the length. |
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endre_k
Registered User Joined: 23 September 2010 Status: Offline Points: 201 |
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June is age away.... but i have to work, exams, live, party, etc =)
by the way, the solution that i said in the SET UP DIAGRAM is it correct? thx again a lot :=) |
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DJ_habyb
Registered User Joined: 28 June 2007 Location: Romania Status: Offline Points: 16 |
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If you know how to calculate the cilidrical port you will know how to calculete a triangle or a squer one.If you know the volum of the round port just make a triangle port with the same volume and you will have the same air volume passing tru and the same air speed.
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We kill the noise :P http://www.youtube.com/watch?v=triRKoBEcik
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kevin tyler
Old Croc Joined: 15 April 2007 Location: Spain Status: Offline Points: 3402 |
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i was told turbosound or was it martin are shying away from the triangle ports, is this so?
kev Edited by kevin tyler - 06 April 2011 at 4:49pm |
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subbass
Old Croc Joined: 30 March 2009 Location: bristol Status: Offline Points: 1683 |
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remember that port lengths change depending on whether the port is flush or freeair - something that WinISD doesnt take into account...
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Steve_B
Old Croc Joined: 29 September 2007 Status: Offline Points: 1587 |
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subbass
Old Croc Joined: 30 March 2009 Location: bristol Status: Offline Points: 1683 |
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I stand 'corrected'
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Steve_B
Old Croc Joined: 29 September 2007 Status: Offline Points: 1587 |
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While I am here, and because this is a thread on rectangular ports, if you didn't know, clicking on the shape changes the port to rectangular.
edit - Subbass I hadn't seen your reply when I posted, so this is a general comment not aimed at you.
Edited by Steve_B - 06 April 2011 at 6:26pm |
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