ported vs. three chamber single reflex bandpass

[Skullz]

Depends on how much trunk space your willing to lose for your sub stage, sealed will be the smallest of all the enclosures and will only get larger with each different type you move up to.

[satish1015]

im still trying to grasp the concept behind "orders" if anyone wants to help with that lol

You're better off with a ported for both. Unless you need like, a ski pass blowthrough or something.

Side note... I find it interesting that a shop would "generally" do bandpass boxes.

I would actually need them to cut a hole in the middle to vent the bass into the cabin from what i saw on bmw forums because the trunk is sealed tight... i dont think thats the same as a blowthrough though..

this is a well known shop in brooklyn and they work on high end builds, so i can believe it when they say that.. ive seen pics of lots of their builds.. but never heard one of the high end ones

Depends on how much trunk space your willing to lose for your sub stage, sealed will be the smallest of all the enclosures and will only get larger with each different type you move up to.

definitely dont want a sealed one loll.. as far as space wise, i don't mind losing most of the trunk.. just need a little space to put small things like a couple of groceries or something lol

[TaylorFade]

Ah. Well... if your seats don't fold down, then the bandpass for a single might actually be a better option.

[satish1015]

Ah. Well... if your seats don't fold down, then the bandpass for a single might actually be a better option.

how come? even if i make a hole??

[TaylorFade]

Ah. Well... if your seats don't fold down, then the bandpass for a single might actually be a better option.

how come? even if i make a hole??

Because you can port through that hole. One of the big advantages of utilizing a BP in this manner is that you can direct all of the pressure though the cut. If you do ported, you'll have a ton of pressure trapped in the trunk just bouncing around trying to rip the trunk lid off the hinges.

Just as an example... when I had my Lexus, I had (2) 10's in a standard ported box doing 143's. I did a BP for them and ported it through the armrest and picked up +4db on the same amp. That's a lot of gain just by changing the alignment.

[satish1015]

Ah. Well... if your seats don't fold down, then the bandpass for a single might actually be a better option.

how come? even if i make a hole??

Because you can port through that hole. One of the big advantages of utilizing a BP in this manner is that you can direct all of the pressure though the cut. If you do ported, you'll have a ton of pressure trapped in the trunk just bouncing around trying to rip the trunk lid off the hinges.

Just as an example... when I had my Lexus, I had (2) 10's in a standard ported box doing 143's. I did a BP for them and ported it through the armrest and picked up +4db on the same amp. That's a lot of gain just by changing the alignment.

Sorry, I understood that part lol.. when i had my volvo i had a ported box, but the seats dropped and i could hear the difference in the bass immediately.. what i was confused about was why can't i do the two woofers in the bandpass if i have the space? does it have something to do with the woofers?

[TaylorFade]

Oh... you can totally do both. I just didn't know if you had 7-8 cubes and were willing to cut a 100sq in hole in a BMW.

[satish1015]

oh..... yea..... lol.....nevermind then! so would that 1 4th order hit harder than the 2 in a ported box??

[satish1015]

Oh... you can totally do both. I just didn't know if you had 7-8 cubes and were willing to cut a 100sq in hole in a BMW.

oh..... yea..... lol.....nevermind then! so would that 1 4th order hit harder than the 2 in a ported box with a ski port to vent?

[TaylorFade]

Oh... you can totally do both. I just didn't know if you had 7-8 cubes and were willing to cut a 100sq in hole in a BMW.

oh..... yea..... lol.....nevermind then! so would that 1 4th order hit harder than the 2 in a ported box with a ski port to vent?

It's difficult to say for sure, but my guess is... if done properly, yes. BP's are usually in the neighborhood of +3bd (or more) from a standard ported so that'll make up the cone area difference. And you save your trunk a whole lot of pain. Even if it's comparable, that alone is worth it to me. And you have no worries about shit bouncing around in the trunk and damaging the subs or leaving room off the back wall for the port. You also have more options for mounting amps and stuff. It's a win-win in my book.