Why the all the huge ports?

[bbeljefe]

Free Air FTMFW!

Dude..

Not offence at all. But is that shirt moving? Shit, drop both windows at least with that shit

again, maybe im seeing somthing else.

Also, i bet your port area is twice as much as mine.....

Teach me??? again, no offence

No offence taken. I get that that isn't an impressive shirt trick. It wasn't meant to be. This is a demo vehicle that's geared toward a blend of sound quality and low frequency response, not sound pressure. It's two 15s on two AT1400.1s and the point of posting that video in this thread wasn't to show off its shirt tricking ability. It was a response to the comment that a lot of port area equates to free air.

Do subs in free air move anything at all? If they do, then kindly show me the evidence and I'll take my marbles and go home. :-)

EDIT: And in case you missed my posts above this one, this is a ¼ wave transmission line, not a ported box. It's supposed to have a lot of port area. In fact, this one has 8% less port area than it should, according to t-line design theory.

[bbeljefe]

I like T Lines...they're ok...but always take up so much space. I prefer an ABC style e closure over a t line

That's another good alignment and I actually modeled one before I did the build in my truck but surprisingly, it was harder to fit a dcbr in the space I have than it was the line.

Probably because of my obsession with port area, lol.

What is an ABC style enclosure?

It's a dual chambered ported box where the driver loads into a chamber with one port loading into the listening area and another port loading into the second chamber, which is also ported into the listening area.

Here's some more/better info.

[Karkov]

I like T Lines...they're ok...but always take up so much space. I prefer an ABC style e closure over a t line

That's another good alignment and I actually modeled one before I did the build in my truck but surprisingly, it was harder to fit a dcbr in the space I have than it was the line.

Probably because of my obsession with port area, lol.

What is an ABC style enclosure?

It's a dual chambered ported box where the driver loads into a chamber with one port loading into the listening area and another port loading into the second chamber, which is also ported into the listening area.

Here's some more/better info.

[MrBigs63']

I like T Lines...they're ok...but always take up so much space. I prefer an ABC style e closure over a t line

That's another good alignment and I actually modeled one before I did the build in my truck but surprisingly, it was harder to fit a dcbr in the space I have than it was the line.

Probably because of my obsession with port area, lol.

What is an ABC style enclosure?

It's a dual chambered ported box where the driver loads into a chamber with one port loading into the listening area and another port loading into the second chamber, which is also ported into the listening area.

Here's some more/better info.

Okay. Now that you have stated this I can say that I have seen one of these before. Thank you sir.