Hey guys I have G coupe and wanted to know if I should get a ported or non ported box?
my setup is 12" L7 single

 

Google could have answered that question for you.

http://www.crutchfield.com/S-K7faD3n...nclosures.html

http://www.eminence.com/2011/06/seal...ed-enclosures/

http://www.hifisoundconnection.com/S...ubwoofer_Boxes

 

That's like asking if you eat italian or mexican food.

We don't know your preferences for sound quality vs. loudness or even what kind of music you listen to, so that might help just a tiny bit on recommendations.

 

ported box for one of those would need to be about 5 cubic feet

good luck

 

ported enclosures are for drivers (speakers) designed for ported enclosures.
the box size, port size and lenght of the port must be calculated and tuned
with the driver in place...
typically you must find out the Theile data for the driver
Fs = the driver's free air resonance
Qts = the driver's total Q factor
Vas = the driver's compliance stated as equivalent air volume

you cant just stick a speaker in any box with a hole in it and expect it to sound better

for the DIY's out there there are plenty sites devoted to this... with online calculators.. but you still need the 3 specifications

the technology is from the early 50's and hasn't changed much.

 

what he said... sealed takes up less space and sounds cleaner and tighter(more natural)....ported boxes take up much more space and add a MAXIMUM of like 3db.....IMO, its not worth letting the sound quality suffer for a tiny extra volume