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Porting a Truck Box


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caferaceman 
Member - Posts: 6
Member spacespace
Joined: October 25, 2002
Location: United States
Posted: June 26, 2005 at 12:53 AM / IP Logged  
I have a Reg cab Chev and want to built a ported box that will fit behind the seats. I have a 10W0 already and have built a ton of sealed boxes over the years with great sucess but I feel like a challenge and want to build a new ported box. I know that on standard ported boxes, the port is usually on the front baffle but ofcourse that is not going to be possible with a 7-8 in. deep box. My questions are: Can the port be on the side of the box or should it be on top like the Q-Logic boxes, and, Is the rule of having a port at least the width of the port from any wall of the inclosure a hard rule or can a 3 in. port be 1-2 in. from say the back wall (the port comming out of the side of the box). Or I am down to try a slot port on the bottom of the box like the Kicker comp premade boxes: Or could a slot port be on the side of the box? Any knowledge and help with this delema is appreciated. Thanks 12Volt!Porting a Truck Box -- posted image.
Bigsingh 
Copper - Posts: 204
Copper spacespace
Joined: March 26, 2005
Posted: June 26, 2005 at 7:25 AM / IP Logged  
yea, u can put ports anywhere as long as they r not in the way of anything, So if u hav  a port near to the floor, and u've got stuff roliing round its no good. so anywhere u find easiest and where it it is logical to put it. if u need help building i will send sum diagrams. good luk
6* Rockford T2's
6* POWER AMPs
BLACK CORRADO
BAANNGGIINN
stevdart 
Platinum - Posts: 5,816
Platinum spaceThis member has made a donation to the12volt.com. Click here for more info.spaceThis member has been recognized as an authority in Mobile Audio and Video. Click here for more info.spaceThis member consistently provides reliable informationspace
Joined: January 24, 2004
Location: Pennsylvania, United States
Posted: June 26, 2005 at 8:16 AM / IP Logged  

caferaceman wrote:
Is the rule of having a port at least the width of the port from any wall of the inclosure a hard rule or can a 3 in. port be 1-2 in. from say the back wall

See this diagram lifted from WinISD Pro help.  The acoustical port is air mass, and extends past the physical port...that is, the physical port that you see is not the entire port length.  Those areas at the ends (the "extensions") are necessary parts of the functioning acoustical port.  Using the port diameter as a guide when allowing minimum space at the ends is necessary.

Porting a Truck Box -- posted image. 

You should be able to find more available space by using a slotted design.

Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.
caferaceman 
Member - Posts: 6
Member spacespace
Joined: October 25, 2002
Location: United States
Posted: June 26, 2005 at 1:28 PM / IP Logged  
Bigsingh: What diagrams do you have? I have used pretty standard demensions for my last few boxes for my last couple of trucks (7.5bd, 5.5td, 15h, and I usually adjust the length for the parameters of the sub and usuable space behind the seat. I have found that the heights and depths I have been using are about max without seat interference.
Thanks Stevdart for the reply. I have been using winlsd for a couple of months now and have loaded just about every drivers parameters I can find in it. Its a great tool instead of building boxes to find out they don't sound as you want them.
thanks again guys!
Bigsingh 
Copper - Posts: 204
Copper spacespace
Joined: March 26, 2005
Posted: June 27, 2005 at 2:10 PM / IP Logged  
i thought you might need help but it seems you know wat ur doing.
6* Rockford T2's
6* POWER AMPs
BLACK CORRADO
BAANNGGIINN

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