people with suv's

[doyoshuffle5 10+ year member]

im pretty sure it would be just like a car trunk

u have the box almost right up on the trunk

my box is tuned to 34 hz

and it **** near sounded the same in my grand am as in my parents grand cherokee

but im really not sure im just goin off what i observed off that

 

[IgnoreMe 5,000+ posts]

why not rotate your ghetto drawing 90 degrees CCW?

cause then my port would be firing up... and that shit just doesnt fly in my explorer from my experience.

 

[IgnoreMe 5,000+ posts]

im pretty sure it would be just like a car trunk
u have the box almost right up on the trunk

my box is tuned to 34 hz

and it **** near sounded the same in my grand am as in my parents grand cherokee

but im really not sure im just goin off what i observed off that

hmm i see what your saying.

oh well i guess i should just probably experiement. i just wanted to get an idea because i would hate to waste $50+ on a box that sounds like shit, or plays only low freqs. //content.invisioncic.com/y282845/emoticons/*******.gif.a649d21efc0d1fd4890a6428166586c1.gif

 

[SeanDub 10+ year member]

Well I have an Isuzu Rodeo - same basic thing as an Explorer Sport.

And I had a DD 9917 in a 9 cube net, 12 cube gross box back there, and it took up the entire area. And it was a CRX style box, the same as in your drawings. The box was probably an inch away from the rear hatch when everything was closed.

My box was tuned to 35hz, and the system peaked at 45hz, which is what I was told is supposed to happen - peak about 10hz above tuning. So I don't think my box's proximity with respect to the back hatch affected the tuning. However I don't know how it affected output because I couldn't move the box forward.

But it slammed.

So as per my experience I would say that the back hatch would not act as a port extension, but that's just one experience.

 

[kbkid 10+ year member]

I'll try again.

I take it your port is facing the back hatch of the Explorer. Since it is doing that, once the wave leaves the port, thats it. Its done. The hatch will not act as another bend or turn in the port because it is no partially enclosed like your actual port was.

The port inside your box has four sides: top, bottom, and two sides. Once it leaves the box, how many sides would your "extended port" have? It would have three, a bottom (floor of cargo space), a side (hatch), and a second side (front of your box). It has no top.

If that doesn't make sense, please disregard everything I just said. Maybe someone can explain it differently.

 

[IgnoreMe 5,000+ posts]

Well I have an Isuzu Rodeo - same basic thing as an Explorer Sport.And I had a DD 9917 in a 9 cube net, 12 cube gross box back there, and it took up the entire area. And it was a CRX style box, the same as in your drawings. The box was probably an inch away from the rear hatch when everything was closed.

My box was tuned to 35hz, and the system peaked at 45hz, which is what I was told is supposed to happen - peak about 10hz above tuning. So I don't think my box's proximity with respect to the back hatch affected the tuning. However I don't know how it affected output because I couldn't move the box forward.

But it slammed.

So as per my experience I would say that the back hatch would not act as a port extension, but that's just one experience.

cool. thanks dude.

 

[IgnoreMe 5,000+ posts]

I'll try again.
I take it your port is facing the back hatch of the Explorer. Since it is doing that, once the wave leaves the port, thats it. Its done. The hatch will not act as another bend or turn in the port because it is no partially enclosed like your actual port was.

The port inside your box has four sides: top, bottom, and two sides. Once it leaves the box, how many sides would your "extended port" have? It would have three, a bottom (floor of cargo space), a side (hatch), and a second side (front of your box). It has no top.

If that doesn't make sense, please disregard everything I just said. Maybe someone can explain it differently.

ahh ok i see what you mean by top now. but thats what im saying, if it has 3, that would mean that it leaves it a place to travel in another direction, which is why i made the black arrows (the air) follow the port, then go out the port, and then use the box, the floor, and the hatch to make another port wall, and guide the air towards the roof.

not sure if it works like that, in fact im doubting it now, but it still seems feasible.

 

[kbkid 10+ year member]

So you were meaning the extension would be going vertically now. The air would be traveling towards the roof?

 

[IgnoreMe 5,000+ posts]

So you were meaning the extension would be going vertically now. The air would be traveling towards the roof?

yea, what did you think i was talking about?

the black arrows are the theoretical path that im assuming the air might take.

 

[2002XLT 5,000+ posts]

sound waves (especially bass) do not simply move up with the air. They travel until they hit something and bounce back, or are absorbed by other objects.

 

[WhoSayWho? 5,000+ posts]

George, I can see what you are saying if you just look at the drawing -- the hatch part just looks like another bend in the port and the port opens toward the roof of the SUV. But that the port "leg" from the true opening to the top of the box would be as wide as the interior of the SUV.

 

[IgnoreMe 5,000+ posts]

sound waves (especially bass) do not simply move up with the air. They travel until they hit something and bounce back, or are absorbed by other objects.

that may be so, but what im trying to see is why the hatch wouldnt act like a port wall. air or not, the sound waves come out of the port, and if the hatch makes up a part of the port, i dont see the difference.

i understand the hatch will absorb some of the sound waves, but how much. what is that threshold?

 

[IgnoreMe 5,000+ posts]

George, I can see what you are saying if you just look at the drawing -- the hatch part just looks like another bend in the port and the port opens toward the roof of the SUV. But that the port "leg" from the true opening to the top of the box would be as wide as the interior of the SUV.

yea i thought about that too and it seams likes thats the only thing holding it back from becoming an extension.

you think this would be possible if say the port ran completely from side to side (like above the wheel wells?)

 

[andytb 10+ year member]

port up

 

[IgnoreMe 5,000+ posts]

port up

in my explorer, port up sucks dicks bigger than ron jeremy