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Isobaric, Bass Reflex


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DYohn 
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Joined: April 22, 2003
Location: Arizona, United States
Posted: January 16, 2006 at 9:50 AM / IP Logged  

taziam wrote:
ok gotcha now small question the port size length remains the same? 

Yes, as long as the internal volume of the enclosure is the same as they specify.

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taziam 
Member - Posts: 16
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Joined: November 22, 2005
Location: Canada
Posted: January 16, 2006 at 5:40 PM / IP Logged  
DYohn wrote:

taziam wrote:
ok gotcha now small question the port size length remains the same? 

Yes, as long as the internal volume of the enclosure is the same as they specify.

sorry to be a pain so then if im building 2 chambers 2 woofers in each.

each chamber will be half of the normal. what will be the port then ? half of normal recomended???

DYohn 
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Joined: April 22, 2003
Location: Arizona, United States
Posted: January 16, 2006 at 6:03 PM / IP Logged  
No, ports do not work like that.  If you want to build two chambers, the Vb of each will be 1/2 that required for a single woofer, and the port length can be calculated using the "Port Length Calc" link on the left side of this site and the 35Hz tuning frequency recommended by CV.
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taziam 
Member - Posts: 16
Member spacespace
Joined: November 22, 2005
Location: Canada
Posted: January 17, 2006 at 11:27 PM / IP Logged  
DYohn wrote:
No, ports do not work like that.  If you want to build two chambers, the Vb of each will be 1/2 that required for a single woofer, and the port length can be calculated using the "Port Length Calc" link on the left side of this site and the 35Hz tuning frequency recommended by CV.
hey is there a way to calculate with dual ports 1 port is way to long 35" in a 12 " box
stevdart 
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Joined: January 24, 2004
Location: Pennsylvania, United States
Posted: January 17, 2006 at 11:43 PM / IP Logged  

taziam, it's hard for others to follow this post and learn something from it if you use a full quote from the previous statement each time you post the next question.  It makes it jumbled and confusing.  Just ask the question.  DYohn will pay attention to this thread.  Ain't nobody else answering to make anyone wonder whose answer you're referring to!  ;)

Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.
DYohn 
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Joined: April 22, 2003
Location: Arizona, United States
Posted: January 18, 2006 at 12:30 PM / IP Logged  
Try this calculator to experiment with multiple port numbers:  http://www.carstereo.com/help2/Articles.cfm?id=31
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