SPL 12 4th order bandpass (rebuild)

[SPLChris 0]

I had my old 4th order BP lying around in my basement so I decided to take it apart and modify a few things. I've made the sealed chamber smaller and I'm going to add more port area to the ported chamber. It will be a slot port facing up along the backglass, 5"x26." Sealed chamber is 1.5 cubes and ported is around 8. Tunage is 45 hz. And yes, it will wang

The enclosure looks pretty rough because of wear and tear of taking it in and out of my Jeep but the inside of it is where I sanded down the fiberglass resin. I'll probably just sand the outside and use black spray paint on it. haha.

Yeah, the cutouts are off center just a tad

Hello big ported chamber

All in all, it's not going to be very pretty but the inside is pretty smooth and it's going to be loud. More pics to follow!

[acex3a 5]

cant wait to see this come along

[Aaron Clinton 2,372]

Love the pictures.

[SPLChris 0]

Got the rest of it together...

Wiring the little guys

8 awg leads

Coils still look good after daily beating from 1500+ WRMS

One more!

[SPLChris 0]

[Aaron Clinton 2,372]

Looking good! Any test results or thoughts yet?

[SPLChris 0]

It's very loud and has great impact, but unfortunately, I miscalculated the ported chamber and it's actually at 7 cubic feet tuned to 48 hz. It's brutal from 40-50 hz but I'm going to need to build a port plug or something if I want to get back the 35 and below that I was getting with my ported enclosure of death.

Welp, now I'm going to work on a transmission line next!

[///M5 2,833]

Why not a 6th order?

[mrogowski 6]

Cool! You should get it tested on a TL.

[ddeitz 0]

i like it, nice to see something different!

[roadkill103 0]

what would you be using to figure out a transmission line box specs, ?

i would like to try 2 of the 6's in transmission line for house use

a 12 would be pretty large wouldn't it

[///M5 2,833]

what would you be using to figure out a transmission line box specs, ?

i would like to try 2 of the 6's in transmission line for house use

a 12 would be pretty large wouldn't it

Too big to fit in a car

[binil 0]

Too big to fit in a car

Why put it in a car, buy an SUV or a truck.. lol..

[///M5 2,833]

Too big to fit in a car

Why put it in a car, buy an SUV or a truck.. lol..

Too big for an SUV. Perhaps you should design one for those two drivers real fast.

[SPLChris 0]

^for sure!