Help With Port Tuning and Displacment

[DangerRanger00 10+ year member]

ok,

Some may remeber my thread on the blowthrough. well i have desited to go a diffrent route, insted of cutting a hole in the cab and bed of the truck i am still paying on(//content.invisioncic.com/y282845/emoticons/uhoh.gif.c07307dd22ee7e63e22fc8e9c614d1fd.gif). i came across a deal on a sung top for 100bux. i jumped on it.

now the problem is fig. up the port length and size for the box. i have desited on a sub up, port back design. the max dem. i can use is 40L x 40W x 15T, so i can still have a little usable bed space. the prob is that leaves me with gross. mesuremnt of 10.8cf witch is wayy bigger then i need.

the min airspace i need is roughly 8.5 after driver and port displacment.

the total driver displacement for the 4 drivers i will be using is .48cf. and the freq. i would like to have would be in the 30 to 35 hz range..

any input would be very helpful.

thanks

DR

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[JT1979 10+ year member]

http://www.reaudio.com/speaker_box/LPort_Box_Calc.html

 

[DangerRanger00 10+ year member]

http://www.reaudio.com/speaker_box/LPort_Box_Calc.html

was messing with that earlyer, but thats for a "L" shaped port. i was planng on going along the lines of a square port. (only box i can think of is meade's design 4 his tahoe)

 

[JT1979 10+ year member]

was messing with that earlyer, but thats for a "L" shaped port. i was planng on going along the lines of a square port. (only box i can think of is meade's design 4 his tahoe)

whatever your port length is, just use the same length, straighten it out, that is what i done with mine. same space and all, u just have to make sure you have enough rm to straighten it out.

 

[DangerRanger00 10+ year member]

whatever your port length is, just use the same length, straighten it out, that is what i done with mine. same space and all, u just have to make sure you have enough rm to straighten it out.

duh!

why dident i think of that...