View Full Version : Porting a shiva

11-12-2005, 01:32 AM
The plan is to port my shiva mkIV in a 2cu ft box tuned to 30 hz. Anyone have sucess with this sub in a ported box?

I know it has a EFB(Not sure what it is exactly if the abbrev. is off) of 52. Anything <50 is for sealed and anything >100 is for ported. I'm guessing its ok to use a ported box for this sub.

If this works with one, I will be sure to add my other shiva in this type of application.

11-12-2005, 04:28 PM
EFB is efective band widht. also any sub can be port long as its tune porperley is this for SQ SQL or SPL

11-12-2005, 05:22 PM
So the EFB is just a guide, not a rule, correct?

11-12-2005, 05:49 PM
is that the same as efficiency bandwidth product or EBP? if it is then yeah is not a rule.

11-12-2005, 07:23 PM
This is car audio. What rules? You could put a Shiva in 0.25 cubes ported to 12hz if you wanted. =p