Bew Box

[monte_carlo97 10+ year member]

I am gettting ready to build a new box for my 97 Monte. I am getting bored with the old one tuned to 35 hertz. So my question is what should i tune my new one to. I am going for all out SPL. The next protion of my question is, should i make one port and put the two subs in one shared chamber like i have now. Or should i make 2 seperate chambers and two seperate ports.

Thanks,

-Dave

Any and all opinions greatly appreciated.

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[monte_carlo97 10+ year member]

*title is supposed to be "new Box"

no "Bew Box"

My Bad

 

[Raven 10+ year member]

Pure SPL = tune high.

50hz, maybe?

 

[JimJ 5,000+ posts]

Will probably depend on the resonant frequency of the vehicle...time to get a sealed enclosure and do some sweeps.

 

[Moe Lester 10+ year member]

single chamber, port in the center. like jack said, tuning will depend on your res. freq.

 

[squeak9798 5,000+ posts]

But if this is still for daily listening...remember you don't want to tune *too* high or music will bottom the sub out. If you want a comp/daily setup, I'd build a box with a swappable port or port plug type thingymabob whichamajigger.

 

[JimJ 5,000+ posts]

Well, the phrase "all out SPL" doesn't imply a daily street-beating box to me...but the port plug would still be a good idea if he's up to the extra work that entails.

 

[psych0ticnemes1 5,000+ posts]

Well, the phrase "all out SPL" doesn't imply a daily street-beating box to me...but the port plug would still be a good idea if he's up to the extra work that entails.

thats what all out spl means to me lol

 

[squeak9798 5,000+ posts]

Unless someone specifically states it's a comp only box, I assume by "all out SPL" that they don't give a rats hairy *** about SQ, only output and loudness.

 

[bcarpenterfhl 10+ year member]

aeroports are always really good for swapping and experimenting, and supposedly are great for SPL. IMO, i would start at 37-38 Hz., and gradually decrease the tuning (by cutting whatever you need to off the port) a hertz at a time.

 

[monte_carlo97 10+ year member]

Will probably depend on the resonant frequency of the vehicle...time to get a sealed enclosure and do some sweeps.

ok. I got a sealed box. Now how will i find out the res freq. of my car.

 

[monte_carlo97 10+ year member]

Well, the phrase "all out SPL" doesn't imply a daily street-beating box to me...but the port plug would still be a good idea if he's up to the extra work that entails.

this is going to be a comp box. I am going for max spl. Then i will make a port plug to turn it into a daily driver.

 

[monte_carlo97 10+ year member]

if someone would be willing to spend a little time with me designing a box, i would really appreciate it.

Basically i want to find out what volume will yield the most output and what to tune to.

 

[monte_carlo97 10+ year member]

single chamber, port in the center. like jack said, tuning will depend on your res. freq.

so single chamber is the way to go?

awhile ago the big thing on here was seperate chambers.

 

[bcarpenterfhl 10+ year member]

to you competitors,

i dont understand how you can simply find the resonant frequency of your car, when your car is composed of so many different materials, each of which have different resonant frequencies....

is just when your panels start to resonate?

and montecarlo, if you're serious about a competition box, you will probably have to experiment with a couple different boxes, so it probably wont hurt just to make a completely different daily box.