After blowing apart my sub the other day, I wanted to test some different subs in the same box I built. First on the list was a Kapton SPL. And all I got to say is WOW :eek:
That sub did 1.5db louder than my Planet BB.
And it wasn't even worked in yet. Now it holds the highest spl for my car with 148.0db.
I would have never guessed it would make that much of a difference. Anyone else make big gains from equipment change?

Funny you say that,, i went from JL W3's to the Kaption spl-1200's and it was night and day.. on the term lab im at 137.0 .. thats with a box tuned to 30hz...

What tunning frequency are you using to achieve 147/148 on the box..

Tunning frequency of the box, I have no clue [img]graemlins/dunno.gif[/img]
I just built it by design and see what happens. The car, it's loudest at 42hz. I've never seen my doors flex soo much [img]graemlins/freak.gif[/img]

I swaped (2) Mmats juggernaut 15" into a car that had Rockford Power HX2 and the car gained almost 3 db.

I had 2 RE HC 15's in my car, swapped in 2 Selenium Extreme 15's and lost 2 db's.

I then changed the box, same power though, and gained 1 db by putting in the Selenium Extremes.

Everything is messed up lol, just do what you can, and have fun :D

Ive got 4 Kaption SPL1200s going in my car. Its gonna be massive. Kaption is awsome!

LOL yes Kaptions is the MASSIVEST

especially these ones...

http://www.canadaspl.com/show071705/images/DSC00519.JPG

... to bad they can't hold 5000+wrms [img]graemlins/freak.gif[/img]

[ July 18, 2005, 10:35 AM: Message edited by: Lessy ]

btw..Lessy with that design to gain you SPL you would ahve had to make the port bigger :)did your tuning of the box not change with the added cone area in that box and sub displacement?

ya, the tunning changed but not by much, only 1 frequency. I had it tunned higher with one 12, so I just lowered it before I put the subs in.

The problem now is that the sub that is directly over the port is xmaxing and the other one isn't. Thats what happened at the last show, only one sub blow apart and it was the one over the port.