Bthor98

I have a jl w7 12 at the moment and im loving it, exept for how it doesnt get the lows to well, would the 13.5 jl w7 be better for the lows? And i was thinking of maybe getting a fi, anyone have experience with them? Or is there any other sub out there that can get the highs like the jl w7 and the lows

jl w7 vs FI *^^

EmperorJJ1

iTrader: (5)

the W7 is made for the lows. it should play them plenty fine (even thou i dont like the woofer much myself)

what box do you have? pics?

Bthor98

Its built to spec off of the jl website and its ported, maybe its because i dont have it properly tuned on the amp yet idk

BoostedLemonPie

I bet it's not much tuned under 40hz. My rf power hx2 12 box, I built at 29hz (wAy low!). I'm building a motor I got from an re hc and I'm on the fence on who I want to rebuild it, but most likely psi will. Fi is stupid pricey

Bthor98

What do you mean not tuned much under 40hz? How do i make it lower then that? Im new to some of this stuff lol

BoostedLemonPie

You'll have to do some research and do some math, or pay somebody to design a box for you with a cutlist for your wood. If it's your first time I suggest you pay for the design, it's very important the person knows what they're doing, a lot of calculations, and the properties of the sub itself, come into major play! And if you go low, you lose the higher frequencies you're used to hearing(40-100) depending, because the box will be tuned for lower hz, so you'll be listening to a lot of decaf and searching for low hz songs. I have a slot port box that is 2.75ft^3. And I forgot my port dimensions, but my spl guru hooked me up with the whole design. He uses psi only...they are local to us here in Memphis.

UltraSilverSS

iTrader: (2)

EmperorJJ1

iTrader: (5)

in a ported box its tuned to a specific frequency. generally that and a few hz close it it is going to be the peak volume the sub will reach. a sub can still play higher freqs over tuning decently but lower will fall off quickly because theres no pressure and the sub acts like free air. So if you have no lows chances are your box is tuned to high. You would need a new box to be tuned lower

Bthor98

K so my box is almost identical to the one off of jl audio, except i didnt have the time to make the walls inside of the box for the port if that makes any sense, would that effect the lows possibly?

cobaltss#01

iTrader: (4)

yes.

EmperorJJ1

iTrader: (5)

is it ported?

Bthor98

Yes

EmperorJJ1

iTrader: (5)

then yes it would be tuned higher unless its wider

Bthor98

Alright thanx for the help, ill start building a new box ah