hey i just got a MTX 6000 15" to play with
the box i am thinking aboutis ....

4.00 ft3
tuned some where between 32-40hz
and i will power it with a jl 500/1
i will let you all know what kinda of numbers i am doing i have a 180 amp alt and 2 yellow tops one front and one back and 2 layers or fat mat and the car is a hach back so i am hoping 135db ish


but my question is what is the avg tuning freq for SPL yes i knwo that it depends on my car but i am just woundering what everyones hz are near

 

Tune it to 42hz, that way it will still play music on the street, as well as pull a decent SPL score (for the quality of the equipment you are using). You should be in the 140's with ease!

 

box is way too big

 

I'd agree, that box is a bit big, maybe go with MTX's specs on the box if your not planing on doing big numbers

 

those are the mtx specs

 

3.68ft3 net after .10ft3 of driver ans .22ft3 of port

 

for SPL, go with something like 2.25 cubes and tune it accordingly to what the car peaks at.
Or 42hz as I recomended above-that would be an Ideal starting point.

 

my kicker L5 12" in the kicker made prefab is 3.5ft3 net so i think that i am gonna try 3.68ft3 net and do some testing with the mtx i will be using my kicker for daily driving and then put the MTX in for SPL comps so i dont care musicly what it sounds like as long as it farts loud

 

why would you even bother asking for advice if you're gonna do what you plan to anyways [img]graemlins/dunno.gif[/img]

pretty much everyone agrees that the box size is too big and you still insist on a using manuf. spec

now, ATOMIC Caravan gave a good suggestion... start with a 2.25ft3 box and just play with port tuning. In spl, bigger does always mean louder, other factors also come to play and with the power that was suggested on using, then a smaller box would get you where you want

 

anything over 2.5 cubes for a single sub is too big!