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making it all smooth

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Old 04-28-2008, 04:25 PM
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can you do a pic of what you are asking ?
sand and resin combo i like it is rock hard but i missed on how you are useing it
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Old 04-28-2008, 05:19 PM
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just remember that fiberglass is not as acoustically dead as MDF...

personally I would add a layer of polyfill to the interior panels
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Old 04-28-2008, 10:03 PM
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why are you going for a smooth box inside ?
do a test after your box ig done and that is
do a db test as the box is then open it up add polyfill (not drywall type to the sides of the box )
see what hit the hardest the box must be in the same place
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Old 04-30-2008, 08:29 PM
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around the port is all you will need as the rest of the box can be any shape or form and there is no diff between them.The smothing is for port noise nothing more.Doing the rest of the box is pointless and is like doing so to a sealed box.Only exception is a TL box and from the design most of this is done before the end box.TL boxes are made to smooth the port and echo the port freq. making it louder.

Bose wave glide is a good example.3" speakers sound huge for the size of driver.
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Old 05-01-2008, 12:02 PM
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use trim you can find it in the shape you need to get that extra 0.0000000001db

Between the subs butt one to the other from the back of them.
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Old 05-01-2008, 01:27 PM
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Originally Posted by ross_freier
ya but if the inside of the box is all nice and smooth then there is less resistence in the air flow makin the box slightly louder in the long run why do u think most spl boxes have some sort of angle or round in the corners, means better air flow better air flow might not mean anything to th guys doin this for street bass but the spl guys it could mean a win or a loose and this is an spl box now... anybody have any actually oppinions that could help... at all
spl has nothing to do with air flow, its all about air pressure

ports flow, boxes make the pressure
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Old 05-01-2008, 01:41 PM
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Originally Posted by Lessy
spl has nothing to do with air flow, its all about air pressure

ports flow, boxes make the pressure
ya the most he will do is make his box smaller.But hey let him try as no TL will pick up the gain if any he will gain but if it does the reverse then he will see it for sure on the TL.



Like I said try it and just use oak trim from a home building center you can find it is fair sizes to do what you want and the will be little smoothing after but it will let you do what you want.Or if you have the goods use a router table and make your own.

I think you best to saty with what me and Lessy are said and just smoth the port for less noise and keep the inside of the box with as much air space as possable after your bracing.


If you want loud do what we did to a van use concrete for the box where you can.Heavy but wow is it loud LOL why you ask? simple no pressure loss!!!
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