Competition Enclosure

remember to make the box as smooth as posible to prevent turbulence and glass the inside instead of making internal braces ill see if i can find some pics of explorer burp boxes

 

Hmm.. my car is 113 inches, so resonant frequencies at 30Hz and 60Hz.

An Fi Q15 in 2.8 cubes @ 50hz should peak at around 59.5Hz according to winisd. Would that be my best SPL box?

 

heres one.....

this in a newer explorer

 

the best way to test the resonant freq. of a car/van is with a TL since it tells you at what freq. it was louder... my van peaks at freq.s 51-53

 

Now we adjust the box size and port tuning so that we have a peak at the resonant frequency. The larger the box the higher the peak. (don't get carried away on size, NO 25 cu ft boxes).

Cervin Vegas recommendation sounds reasonable, but put the info in Bass Box or WinISD, where is the Peak?

 

ok, i don't want this box for spl, it's for sq but is it still good to tune it close to the resonant frequency? If i put 2.5 cubic feet box the port velocity starts going crazy, so i was wanting to do this box 3.8 cubic feet is the smallest i can get that seems to respond the best. Should i tune to 35hz closer to my resonant frequency? This box is 3.8 cubic feet tuned to 40hz, looks like the peak is at 46hz

 

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........................................lol, Threadjack, sorry azn!!

 

looks awesome, do you keep back up mdf paste? that could come in handy i should start doin that lol

 

oh ok i couldnt tell if it was just dust in there or mdf paste

 

azn u told me how to do alot of this ages ago.... but i appreciate your double effort

 

For SQ you want the smoothest response. Get close to resonence, but don't make it a priority.

Hey AZN, if I ever need a box built, I'll be coming to you. Super good work, keep it up