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Box volume

 

Ken Dryden
Bronze Member
Username: Kdryden

Post Number: 74
Registered: Dec-09
Posted on   
When calculating the volume of a box for a sub do you have to take into consideration the volume of the sub?

Right now the dimensions I have come up with is

external dimensons are 13.5inches deep, 23.5inches wide, 15inches high, wood thickness is .75 with a 1.5inch thick front

internal dimensions would therefore be

11inches deep, 22inches wide, 13.5inches high

for a total internal volume of 1.89ft^3
the sub is 12" 8.5inches deep therefore

pi*0.5^2*0.708=0.556

1.89-0.556=1.334 ft^3 and with bracing ill be about 1.3ft^3
Can somebody please confirm me these numbers, ichecked them 3 times they seem to be right
 

[...Rovin...]
Platinum Member
Username: Rovin

1 15 = 152.5 DBs ...Trinidad & T...

Post Number: 15866
Registered: Jul-05
Posted on   
yes u have to take into acct sub displacement which the manufacturer will provide that info ...
 

Domenico Zerilli
Silver Member
Username: Domenico

BanginGMCArizona

Post Number: 490
Registered: Apr-09
Posted on   
the SD usually isnt huge so just make the box a wee bit bigger then you have it.

REcalc will help you with the box specs..

http://www.reaudio.com/speaker_box/LPort_Box_Calc.html
 

Ken Dryden
Bronze Member
Username: Kdryden

Post Number: 75
Registered: Dec-09
Posted on   
wait if the sd isnt that much and im shooting for 1.3 than shouldnt my box be a bit smaller?
 

Domenico Zerilli
Silver Member
Username: Domenico

BanginGMCArizona

Post Number: 499
Registered: Apr-09
Posted on   
I havent took the time to acually look at the specs of the box and sd but say the box is 1.3 after the sub displacement and the sd is a cube (CUBE IS AN EXAMPLE!!) then make the box 2.3 so it'll be 1.3 after the sd.

..yeah.. i think thats right


P.S. Email will work better then PM..
 

Ken Dryden
Bronze Member
Username: Kdryden

Post Number: 76
Registered: Dec-09
Posted on   
Well i checked SD is 0.12 cuft therefore my internal volume should be 1.3+0.12 right?
 

Domenico Zerilli
Silver Member
Username: Domenico

BanginGMCArizona

Post Number: 506
Registered: Apr-09
Posted on   
If the box is suspose to be 1.3 after the SD and the SD is 0.12 then yes make the box 1.3+0.12
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