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how to build a ported box for 4 15s


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butcha 
Member - Posts: 31
Member spacespace
Joined: February 26, 2007
Location: United States
Posted: May 10, 2007 at 3:56 PM / IP Logged  

so i want to build a ported box for 4 15" kicker comp cvr's in a 98 tahoe fireing up if possible  should i build 2 boxes or one big box the space i have to work with is W=45" D=36" H=21" i need help in the actuall dimensions of the port and the box or realy any advise will help im a good box builder but a better carpenter so if yall can give me dimensions i can work with that and the sound i want to create is LOUD!

kicker has dimensions for one sub ported as 5ft +port displacement

3" x 12.5" port, 22" long or...

3.0ft + port displacement

2.75" x 15.5 port, 25.75" long

or should i go with one big sealed box what would the box measure then if kicker askes for 1.8 ft each speaker...

my friends call me butcher i fear no wires that dont belong.......................
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: May 10, 2007 at 11:29 PM / IP Logged  

Build sealed chambers for those subs.  Make it easier on yourself to load and install the beasts by building two separate boxes rather than one.  1.8 cu ft is MINIMUM size...don't use the minimum.  5 cu ft is maximum for each sub.  Try to get each driver chamber as close to the maximum as you have room for.  I believe if I were doing this, I would build 4 separate boxes.  A 5 cu ft box is going to be heavy.  A 20 cu ft box impossible.

Remember, sealed, not ported for this sub.  http://www.subwoofer-builder.com/freesoft.htm  Work with this program to find actual measurements.  You have close to 20 cu ft of room to work with.  Look to the left side of this page at woofer calculators, rectangular box.

Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.
butcha 
Member - Posts: 31
Member spacespace
Joined: February 26, 2007
Location: United States
Posted: May 11, 2007 at 2:35 PM / IP Logged  

say i have an idea but now that u say go with a biggger box im might be wrong the measurments i have are.............outer dimensions

                                 H=35" x D=35" x H=15" with a solid divider in the middle and two window dividers between the subs  i wish i could draw it out to show yall

my friends call me butcher i fear no wires that dont belong.......................

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