i finished putting this togethre right now... LMK what you think. I'm uneasy about the tuning freq because i was unfamiliar with the calc. i used. since the box is wider, i can now have a good 26" of port area.

anything wrong with what you see? the sub itself is .3 cubic ft but i will add more baffle to compensate

I'd actually put the sub on the other end of the box (or flip the port to the other side)

You want the sub as far from the port end as possible.

Edited January 10, 200619 yr by tommyk90

why is that? what negative effects will come out of it? because i dont have the mounting depth to do that. other than that, everything cool?

Looks fine.

I do not like side firing boxes like that, in my opinion they sound like ass, its just vibrates the side of the car and doesn't sound pleasant.

really? eh well, its fine with the side firing right now, theres no vibration in my car. thanks a lot yall!

Kickin, do you know what kind of car he has ?

Its an old school MB diesel. The thing rattles enough when its idiling.

Adding some bass rattle probably wont make a difference.

He doesnt call it " Mr. Tank" for nothing.

why is that?  what negative effects will come out of it? because i dont have the mounting depth to do that.  other than that, everything cool?

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I've been told that placing the sub closer to the port opening can cause some problems with pressure not being built up in the box (for instance in a wall with multiple subs, the subs closer to the port will unload easier than those further away).

Thus, placing the sub as far away from the port as possible will allow the waves to fully develop before exiting through the port.

At least this is what i have told and seen. If you look at most SPL cars, if they have the space they will place the subs as far from the port end(s) as possible (CRX box is one example).

ooh okay i had my previous sub like that, and it was fine, so im pretty sure that it would be fine. im not goin for hardcore spl, just a DD

why is that?  what negative effects will come out of it? because i dont have the mounting depth to do that.  other than that, everything cool?

I've been told that placing the sub closer to the port opening can cause some problems with pressure not being built up in the box (for instance in a wall with multiple subs, the subs closer to the port will unload easier than those further away).

Thus, placing the sub as far away from the port as possible will allow the waves to fully develop before exiting through the port.

At least this is what i have told and seen. If you look at most SPL cars, if they have the space they will place the subs as far from the port end(s) as possible (CRX box is one example).

I know pretty much crap about SPL, but you would need a rather large enclosure for the wave to fully develop within the enclosure wouldn't you? I know soundwave lengths change with many variables in mind, but even a 100Hz note would be between 10-12 feet in length. Therefore, you could deduce that the actual waveform would never fully develop inside the enclosure.

Wasn't this part of the rationale behind the 1/4 wave theory that was big a year or two ago?

why is that?

I know pretty much crap about SPL, but you would need a rather large enclosure for the wave to fully develop within the enclosure wouldn't you?  I know soundwave lengths change with many variables in mind, but even a 100Hz note would be between 10-12 feet in length.  Therefore, you could deduce that the actual waveform would never fully develop inside the enclosure. 

Wasn't this part of the rationale behind the 1/4 wave theory that was big a year or two ago?

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sooo thats where the cabin gain kicks in?