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walkychalky

Box Question

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Currently I have two 12's but am upgrading to two 15" RE SX's.....they will be powered by an orion 2500d.... here is a quick sketch of the box i am using now: http://img357.imageshack.us/img357/9914/enclosure7zy.jpg

It's made with 3/4" MDF

 

so my question is do u think that this box will be a nice match for my new subs if i cut the holes larger so that they fit 15's? or would u suggest a whole new box?....i would like to keep this one because it fits perfectly in my Grand Cherokee and looks very nice....but i dont want my new subs to sound like shit in it....so any suggestions?....i dont know anthing about building boxes so i would have to pay for someone to build a new one.....so lemme know what your guys opinions are. Also, if anyone could let me know what the box is tuned to n its volume that'd be very helpful....i forgot what it was n dont know how to figure it out. (The calculators only confuse me)

 

Thanx

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Looks good, RE recommends 3.5 per 15 SX for SQL, and you're giving them a little under 7.8( i dunno what ur subs displacement is, closer to 7 after displacement) for both with a tuning at about 31. pre-displacement of subs.

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thanx for ur help....how do i found out the displacement of my subs and how much will the displacement affect tuning??

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Looks good, RE recommends 3.5 per 15 SX for SQL, and you're giving them a little under 7.8( i dunno what ur subs displacement is, closer to 7 after displacement) for both with a tuning at about 31. pre-displacement of subs.

 

Wrong.


Before poking fun at others at least learn to spell. I won't go into all the gammar mistakes!

 

Irony?

 

Your sig... Im trying to figure out if you think he spelled grammar wrong. Because, he didn't. ;) Irony indeed.

 

:wow:

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Wrong.

 

very informative

 

:handclap:

 

 

Its either 7.8 @31 or 6.3@34 depending on how u measured it.

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Box = 6.73 before any displacments. Granted those are external dimmensions.

Port displacment = 0.56

Speaker displacment will be 0.36

 

So 5.81ft^3 after displacment. That's only 2.91ft^3 each and you will need a bigger box...


Before poking fun at others at least learn to spell. I won't go into all the gammar mistakes!

 

Irony?

 

Your sig... Im trying to figure out if you think he spelled grammar wrong. Because, he didn't. ;) Irony indeed.

 

:wow:

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Oh and your current box is tuned to 34.5hz...


Before poking fun at others at least learn to spell. I won't go into all the gammar mistakes!

 

Irony?

 

Your sig... Im trying to figure out if you think he spelled grammar wrong. Because, he didn't. ;) Irony indeed.

 

:wow:

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so if i wanted 3.5 cubes per sub after port and sub displacement.....tuned to about 32 Hz...... what would the LxWxH (external) have to be?....would it fit in a space thats 45x21x19?.....

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Yes. But you may not get the disired port area for 2 15's.


Before poking fun at others at least learn to spell. I won't go into all the gammar mistakes!

 

Irony?

 

Your sig... Im trying to figure out if you think he spelled grammar wrong. Because, he didn't. ;) Irony indeed.

 

:wow:

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could u give me the dimensions it would take.....maybe extending the length and width a lil bit....i could maybe gain an inch or two either way....or would this still not be enough?

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Actually those dimmensions wrok out pretty good.

 

Box - 45" x 21" x 19" = 8.59

Slot Port - 17.5" x 4" x 16" = tunned to 32hz(31.83)

 

Each speaker will have 3.73ft^3


Before poking fun at others at least learn to spell. I won't go into all the gammar mistakes!

 

Irony?

 

Your sig... Im trying to figure out if you think he spelled grammar wrong. Because, he didn't. ;) Irony indeed.

 

:wow:

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Actually those dimmensions wrok out pretty good.

 

Box - 45" x 21" x 19" = 8.59

Slot Port - 17.5" x 4" x 16" = tunned to 32hz(31.83)

 

Each speaker will have 3.73ft^3

 

that sounds great.....will the extra .23 cubes per sub make much of a difference in performance?

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that sounds great.....will the extra .23 cubes per sub make much of a difference in performance?

 

Yep. You can shave about an inch If you wish to get back down to 3.5 each. But I find with a bigger box the Low end is much louder:yumyum:


Before poking fun at others at least learn to spell. I won't go into all the gammar mistakes!

 

Irony?

 

Your sig... Im trying to figure out if you think he spelled grammar wrong. Because, he didn't. ;) Irony indeed.

 

:wow:

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well he said b4 that my sub displacemnt would be .36....so that would make it .18 per sub....meaning that each sub would have 3.55 cubes?...is this right??

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He didn't take in account sub displacement so it'll be a little shy.

 

If you are refering to me, yes I did.

 

Total box volume 8.59

Total port displacment 0.77

Sub Displacment .36

 

Volume after displacment - 7.46

 

3.73 each sub...

 

:p:


Before poking fun at others at least learn to spell. I won't go into all the gammar mistakes!

 

Irony?

 

Your sig... Im trying to figure out if you think he spelled grammar wrong. Because, he didn't. ;) Irony indeed.

 

:wow:

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