big ported box harm the sub?

[SQBubble 10+ year member]

wut disadvantage do i have if i make a box too big?

does it affect the quickness/response of the sub?

 

[VereChronicus 10+ year member]

Yes. It will affect the restoring quality that the smaller box exhibits on the moving parts. What vehicle is this going in...I didn't catch that in any above posts? It's not specifically how big the box is, or where you tune it, rather the vent size and length in proportion to the box volume. As you can tell by using WinISD, there are 50,000 different port sizes you can make to tune the box to the same frequency. You want high output at low frequencies and larger enclosures do just that. The larger you go, the worse the restoring quality of the enclosure but the more port you can drive. The more port you have, the louder it is capable of getting.....in a broad perspective. Tuning that box with a bigger than "recommended" vent is what I'd recommend to get some serious output at lower frequencies...via tuning to about 32Hz with 16 square inches of vent per net cubic foot. Use WinISD to figure out the length based on your box net volume. That sized vent will add quite a bit of displacement to the box, so you'll have to play around to get the enclosure to the size you need to get it INTO the car. Nothing to do with exactly how big the spot in the car is....rather how big the opening INTO it is. If you want more low frequency extension, put the vent closer to a wall of the trunk.

 

[SQBubble 10+ year member]

Yes. It will affect the restoring quality that the smaller box exhibits on the moving parts. What vehicle is this going in...I didn't catch that in any above posts? It's not specifically how big the box is, or where you tune it, rather the vent size and length in proportion to the box volume. As you can tell by using WinISD, there are 50,000 different port sizes you can make to tune the box to the same frequency. You want high output at low frequencies and larger enclosures do just that. The larger you go, the worse the restoring quality of the enclosure but the more port you can drive. The more port you have, the louder it is capable of getting.....in a broad perspective. Tuning that box with a bigger than "recommended" vent is what I'd recommend to get some serious output at lower frequencies...via tuning to about 32Hz with 16 square inches of vent per net cubic foot. Use WinISD to figure out the length based on your box net volume. That sized vent will add quite a bit of displacement to the box, so you'll have to play around to get the enclosure to the size you need to get it INTO the car. Nothing to do with exactly how big the spot in the car is....rather how big the opening INTO it is. If you want more low frequency extension, put the vent closer to a wall of the trunk.

woow, now thats some good info man, thx alot

now this is goin' in a maxima

alright, so ya i want serious output in them lows, I did a plan but im not sure 'bout it...

itll have (more than wut i need, is it ok? 4.2x16=67.2)75sq.inch of port (2port of 15x2.5, does it make the same effect of a single 15x5)? cuz with 2port itll be more simple and look better.

itll have 4.2cu.ft NET sub displacement included and tuned @~32.5hz(18.5inch of effective port length in each side port)

i want to have good response also, so i think 5cu.ft is way to big like many said...u think the enclosure i planned would be good for wut i want, crazy lows&decent highs with good restoring/quality??

 

[SQBubble 10+ year member]

itll look sort of like this: wut do yall think?

 

[iamamp3pimp 5,000+ posts]

2 ports definately look better, but its much harder.

 

[forceofwill 10+ year member]

Uhh, what kind of maxima do you have. I can't fit anything bigger than 27.5 wide, about 15.5 high, and 28 deep. Even at those demensions I run the risk of kicking the shit out of it until it shoves in. I have a 3rd gen.

 

[SQBubble 10+ year member]

2 ports definately look better, but its much harder.

hm, well does it affect the sound compared to 1port? or its even better? more air flow! lol:up2somet:

 

[SQBubble 10+ year member]

Uhh, what kind of maxima do you have. I can't fit anything bigger than 27.5 wide, about 15.5 high, and 28 deep. Even at those demensions I run the risk of kicking the shit out of it until it shoves in. I have a 3rd gen.

im gonna build in the trunk, i cant fit anything good if i make the box outside the car...

 

[SQBubble 10+ year member]

its a '96