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View Full Version : Sealed box too big..... what happens?



budahbuddy803
07-02-2008, 11:14 PM
I have my idmax 12" in 2.5cuft sealed. It isnt very impressive i wouldnt say. For drum and bass it works well, but for rap it is not good. There are 6 tiny screw holes in the box that are not covered as well.

Does the box being to big have anything to do with why it isnt up to par?

bones22
07-02-2008, 11:19 PM
wow thats about 1ft more than needed

budahbuddy803
07-02-2008, 11:20 PM
wow thats about 1ft more than needed

haha wow!!! yes i know it was for a 15", but i put a baffle for a 12" on there for short term. I figured it would be alright considering you can IB the IDMAX.

Louisiana_CRX
07-02-2008, 11:24 PM
gorilla tape some two liter drank bottles inside the box to take up some space.....

budahbuddy803
07-02-2008, 11:34 PM
Yeah i was going to just glue some wood in there its just i dont have any the same size and i wouldnt want to reduce the size of any of the wood. Then the only problem with my wood idea is i would have no idea how much space i am taking up.

About how much space would two 2L bottles take up? In terms of cubic feet if possible.

Pioneer~Saturn
07-02-2008, 11:34 PM
yea, you can simply fill those holes and screw a piece of 2x4 or some other object inside of it to cut down on airspace..

budahbuddy803
07-02-2008, 11:36 PM
2L bottles would be WAY better considering it would add no weigh i just need to figure like a liter to cubic feet...

Louisiana_CRX
07-02-2008, 11:41 PM
Grape and Orange Drank bottles give you more db's :fyi:

budahbuddy803
07-02-2008, 11:43 PM
Grape and Orange Drank bottles give you more db's :fyi:

oh, word? Ill be sure to pick up that purple drank... Oh BTW i overheard my white friend talking about some grape juice earlier. WTF is juice?

Crodski
07-02-2008, 11:43 PM
Grape and Orange Drank bottles give you more db's :fyi:

i heard about this but am scared to try

budahbuddy803
07-02-2008, 11:47 PM
Do you guys think 3 2L bottles would be too many?

SRim23
07-02-2008, 11:57 PM
Do you guys think 3 2L bottles would be too many?

just experiment with it, see what you like. worst thing that can happen is you dont like it and take one out.

Vermithrax
07-03-2008, 12:11 AM
http://www.sciencemadesimple.net/volume.php

1 liter = 0.04 cubic foot

Styrofoam blocks wouldn't add much weight.

budahbuddy803
07-03-2008, 12:13 AM
http://www.sciencemadesimple.net/volume.php

1 liter = 0.04 cubic foot

haha yeah i just checked out a calculator and i would need more than like 5 2L bottles to even take up any space at all it seems.... I dont know i guess ill go drink a bunch of soda tomorrow and see what happens.

CJL
07-03-2008, 12:13 AM
if my math is correct,you need (25) 2L bottles to lose a cubic foot. :eek:

ProgMtl
07-03-2008, 07:56 AM
I would like to see you put (25) 2L bottles in a cubic foot (may even be impossible crushing them up).

jdc753
07-03-2008, 11:59 AM
There has to be something missing from this liter to cubic foot conversion. I came up with the same conclusion looking at some conversion sites and such. Maybe its the stupid engineer in me coming out, but if you assume a 5" diameter and that the bottle is 12" tall (I don't have one on hand to measure) then the bottle would displace approximately 0.14 ft^3 which is a bit better than the 0.04 ft^3 you get with the conversion. Now you just need about 7 bottles lol :eek: still sounds wrong though, guess you better start drinking.

pd8731
07-03-2008, 03:22 PM
Approx 14 2 liter bottles will equal a cubic foot. That is for sure, correct.

snb778
07-03-2008, 03:37 PM
what happened to polyfill??... or foam board???????????

BEAVER.989
07-03-2008, 04:37 PM
What is it, exactly that you don't like the sound? A lot of people love the MAX's IB... and that's pretty close to what you're doing here.

The 2.5cft. enclosure will give you more authority at the lowest octaves, but a little less output up higher. A larger enclosure sometimes has a little dryer sound and also has lower power handling, as well.

I guess experimentation will tell you what you like, ultimately... But if you're not driving the sub past it's limits with the power you have on tap, I don't know how much of a difference a smaller enclosure will make for you. Have you ever looked at ID's graph comparing the recommended sealed enclosure compared to the IB set-up? There's not a very big difference between the two, IIRC.

kovemaster559
07-03-2008, 04:39 PM
just go ported!

WALKS UP
07-03-2008, 04:40 PM
just go ported!

Do you ever post anything helpful? Do you even know ANYTHING about car audio? :laugh:

dakayus
07-05-2008, 04:13 PM
what about the foam filler stuff they have at home depot? It's the yellow thing that when sprayed expands and solidifies pretty firmly. It'll have very low weight too!