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Old 6th October 2007, 15:15   #16
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4.5 How do I build an enclosure? [AO]
Build a Sub Enclosure

Just some of the links I found when I googled it sir. You can search around. There are some wonderful guides out there on other forums also. I think screws are better as they offer a better grip than nails and also nails tend to come loose with time more than screws.
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Old 6th October 2007, 16:25   #17
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Can one use the Bubble test to check the leakage???Otherwise the leakage is hard to detect???
Any opinons!
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Old 6th October 2007, 16:38   #18
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One can try one thing more. Push the woofer diaphragm and see that it comes back slowly. The slower the sub comes out better the sealing.
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Old 6th October 2007, 16:44   #19
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Raghu bai ji,THAT MIGHT NEED SOME XPERIENCE IN THAT TESTING,,I HAVE NONE AND MORE OVER I WON'T BE ABLE TO COMPARE SLOW N FAST.
WE KNOW FOR SURE THERE IS A PROBLEM BUT NOW COMES THE SOLUTION PART,ANY OTHER METHOD ...
BUBBLE METHOD MIGHT WORK BUT ONE CAN'T DO IT AROUND THE DRIVER MOUNTED AREA....AGAIN A LIMITATION...
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Old 6th October 2007, 16:49   #20
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Raghu bai ji,THAT MIGHT NEED SOME XPERIENCE IN THAT TESTING,,I HAVE NONE AND MORE OVER I WON'T BE ABLE TO COMPARE SLOW N FAST.
It is not a big thing sir. You can try it at least.
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Old 6th October 2007, 16:54   #21
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AKG i think the best solution would be to get a ready made enclosure, i am familiar with all the subs in the Indian market, they all have a basic output of 100 to 200 RMS, you could get one 12" sealed Sub enclosure from a brand called BaassFX sold in India. If you tell your subwoofer and its spex i could surely tell you if it matches the same. Cheers.
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Old 6th October 2007, 18:30   #22
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Originally Posted by Akashh View Post
AKG i think the best solution would be to get a ready made enclosure, i am familiar with all the subs in the Indian market, they all have a basic output of 100 to 200 RMS, you could get one 12" sealed Sub enclosure from a brand called BaassFX sold in India. If you tell your subwoofer and its spex i could surely tell you if it matches the same. Cheers.
Just one correction. Gill is looking for a new box, not me
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Old 6th October 2007, 19:59   #23
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Originally Posted by low_bass_makker View Post
One can try one thing more. Push the woofer diaphragm and see that it comes back slowly. The slower the sub comes out better the sealing.
Just did this small test,and the sub came back, at a quite slow speed, one could could hardly feel it comming back to postion(Though it did came back)Though as far as i know if the box in properly sealed teh sub will go go down quite hard once pressed..
So what one can drive after this test......
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Old 6th October 2007, 20:02   #24
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Quote:
Originally Posted by Akashh View Post
AKG i think the best solution would be to get a ready made enclosure, i am familiar with all the subs in the Indian market, they all have a basic output of 100 to 200 RMS, you could get one 12" sealed Sub enclosure from a brand called BaassFX sold in India. If you tell your subwoofer and its spex i could surely tell you if it matches the same. Cheers.
Ahashh bhai,
would u plz explain the"all the subs in the Indian market, they all have a basic output of 100 to 200 RMS"
I am really confused!!
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Old 6th October 2007, 22:18   #25
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Quote:
Originally Posted by low_bass_makker View Post
One can try one thing more. Push the woofer diaphragm and see that it comes back slowly. The slower the sub comes out better the sealing.
I tried it on Gill's Sub and Clip's back to back.

On Gill's sub, it goes in easily and comes back also, slowly though.

Clip's Sub, on the other hand would hardly even want to go in.

I guess the second case tells better about the sealing being achieved.
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Old 6th October 2007, 23:35   #26
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Originally Posted by ScarySkulls View Post
I tried it on Gill's Sub and Clip's back to back.

On Gill's sub, it goes in easily and comes back also, slowly though.

Clip's Sub, on the other hand would hardly even want to go in.

I guess the second case tells better about the sealing being achieved.
Exactly Rajat,i read some where that if You can push on the center of the cone gently for a few seconds and when you let go it should go right back to its normal position right away. If you see it slowly return you have a leak. If you have a completely seal box then you have an air spring, the air will expend immediately after you take your hand away if there is not leak. But on the other hand if there is a leak and you push down on the cone for a little bit, it will give the box time to let that air leak out and when you release it the air will leak back in slowly as the only force pulling it in will be the suspension of the sub wanting to go back to its normal state. That would be a much weaker and slower acting force then air re-expending in a sealed box.
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Old 6th October 2007, 23:49   #27
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Quote:
Originally Posted by Gill View Post
Just did this small test,and the sub came back, at a quite slow speed, one could could hardly feel it comming back to postion(Though it did came back)Though as far as i know if the box in properly sealed teh sub will go go down quite hard once pressed..
So what one can drive after this test......
Then it is ok

Quote:
Originally Posted by ScarySkulls View Post
I tried it on Gill's Sub and Clip's back to back.

On Gill's sub, it goes in easily and comes back also, slowly though.

Clip's Sub, on the other hand would hardly even want to go in.

I guess the second case tells better about the sealing being achieved.

Yes sir the clip enclosure is quite sealed. But even if it is a very small leak it will not make much of a difference. If the leak is big there will be air noise which you can easily hear.
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Old 7th October 2007, 00:04   #28
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Originally Posted by low_bass_makker View Post
Then it is ok
LBM
So that means sub enc is fine,,,,there is problem in something else???

Should we look for problem somewhere else...Any pionters!!
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Old 7th October 2007, 15:29   #29
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Quote:
Originally Posted by ScarySkulls View Post
On Gill's sub, it goes in easily and comes back also, slowly though.

Clip's Sub, on the other hand would hardly even want to go in. And when pushed, will bounce back instantly.
In my above quoted example, Please make me understand why even in second case we can call it sealed? Sealed should mean that compressed air will literally kick the cone back into place. Why then it wants to come out slow?

Asking because, I read that in case of a sealed box, a leak will reduce the Sub's capacity to handle power. And it can bottom out easily even at moderate power.

This is Exactly the problem that is being faced.

Last edited by ScarySkulls : 7th October 2007 at 15:31.
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Old 7th October 2007, 15:45   #30
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Quote:
Originally Posted by Gill View Post
LBM
So that means sub enc is fine,,,,there is problem in something else???

Should we look for problem somewhere else...Any pionters!!
Quote:
Originally Posted by ScarySkulls View Post
In my above quoted example, Please make me understand why even in second case we can call it sealed? Sealed should mean that compressed air will literally kick the cone back into place. Why then it wants to come out slow?

Asking because, I read that in case of a sealed box, a leak will reduce the Sub's capacity to handle power. And it can bottom out easily even at moderate power.

This is Exactly the problem that is being faced.
I dont understand what you two guys trying to say. The Sub is bottoming out, But why ? how come what is the problem.

SS if the sub is coming back at a slow speed then it is a good sealed box. Like I said a very small leak will work but one can check for any major leak but playing the sub only and see that any air is coming out or not.
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