Air space?
#1
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Air space?
I have two kicker l7 12s and i wanna put them in a ported box. I have enough room in my trunk to build a 7.5^3 ft box (minus the port). However kicker recommended 6.5^3 ft MAX airspace for for them. I was wondering if the extra 1 cubic foot of airspace would be dangerous for the subs or if itd make them more efficient? I want LOW lows.
Also if it does work do you think a 4" port for each sub would make the lows lower or should i keep the port at 3" max?
Thanks, Blue.
Also if it does work do you think a 4" port for each sub would make the lows lower or should i keep the port at 3" max?
Thanks, Blue.
#2
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this might help you out Subwoofer Enclosure Calculators, Fraction to Decimal, Parallel, Series, Port Length and Volume Calculators its what i used in the past for my box
#3
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Just to answer your questions. Yes that big of a box will hurt your subs if putting rated power or more than rated. If your using a crappy amp then a big box will help the output. 3" or 4" port doesn't mean anything without knowing the hight of the port and knowing your airspace. Also 1 common shared port for both subs will be better than a port for each. You need to read up on alot before I suggest you building your own box.
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Just to answer your questions. Yes that big of a box will hurt your subs if putting rated power or more than rated. If your using a crappy amp then a big box will help the output. 3" or 4" port doesn't mean anything without knowing the hight of the port and knowing your airspace. Also 1 common shared port for both subs will be better than a port for each. You need to read up on alot before I suggest you building your own box.
Thanks for the posts everyone!
Last edited by BlueBaltin; 05-14-2013 at 12:18 PM. Reason: Automerged Doublepost
#8
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Actually rule of thumb is 12-16sq in per cube for the best performance and flattest response. Seems to me that about 15sq in port per cube is what works best from my experience with DC audio, FI, Sundown Audio, Skar Audio, and I've done alot of Kicker CVR's and a few SoloBarics(Usually singles tho).
#14
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I've done 2 boxs with DC audio Level 3's both ended up being 4" ports. Just a regular L port on the driver side. 1 was a cut-through in a single cab ford ranger and 1 was in a scion tc coupe. I also did a box for some alpine type R's that had a 4" port and didn't have any issues with port noise. My 2x 10" box I just did for my cobalt ended up being 3.25" x 12.5" port.
Ya, i'm not sure I do 45's on the port corner and 3/8" round over at the corner of the port wall and the begining of the L port. Also roundover the port edges exiting the box. How I do all my boxes, then my personal boxs and close friends I'll 45 all the corners but usually not for other people too lol
Ya, i'm not sure I do 45's on the port corner and 3/8" round over at the corner of the port wall and the begining of the L port. Also roundover the port edges exiting the box. How I do all my boxes, then my personal boxs and close friends I'll 45 all the corners but usually not for other people too lol
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Actually rule of thumb is 12-16sq in per cube for the best performance and flattest response. Seems to me that about 15sq in port per cube is what works best from my experience with DC audio, FI, Sundown Audio, Skar Audio, and I've done alot of Kicker CVR's and a few SoloBarics(Usually singles tho).
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Yeah but unless it is a botique brand the manufacturer is just gonna rattle off some random number which could be rubbish. I run all my boxes through winisd and it measures port area based on driver requirements in the given airspace.
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