good box?

[DeeeeBeeez 10+ year member]

will this work for an mj 18 and sound good

http://subwoofertools.com/forum/ported-box.asp?Ew=35&Eh=25&Dia=11&Xmax=12&Vd=.25&NumW=1&Vb=4.5&Fb=30&Qts=&Vas=&Fs=&CE=0

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[jeremiah 10+ year member]

make the driver displacement 0.47 and you are good to go

http://subwoofertools.com/forum/ported-box.asp?Ew=35&Eh=25&Dia=11&Xmax=12&Vd=.25&NumW=1&Vb=4.5&Fb=30&Qts=&Vas=&Fs=&CE=0

 

[jeremiah 10+ year member]

if you make the box 20"H the port will be 28" long instead of 40" and the 28" port will halp

with the back pressure or what aver it's called