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JoseMCeee
03-05-2005, 03:28 AM
Well I almost finished the box but my battery died on the drill :crap:
Heres some pics of where I left off

http://img47.exs.cx/img47/4062/00000915so.jpg
http://i132.exs.cx/img132/1526/00000930zv.jpg

YES I know thats a lot of glue and YES thats a lot of screws but o well!

The specs of it is 1.5 and its for the 12 SE. I heard that adding polyfill will help the lower bass hit with out sacrificing the mid/high bass?

First question: is that true?
Second: How much polyfill should I add?

SPL140.2
03-05-2005, 03:33 AM
When your enclosure is sumwhat smaller than recommended for your subs, pollyfill or fiberglass slows down the bass waves inside the enclosure. In turn makes the woofer perform like it was in a bigger enclosure. Usually 80% but dont pack it tight.

JoseMCeee
03-05-2005, 03:49 AM
so the lower end bass will be louder with out sacrificing the mid high bass?

mykeys
03-05-2005, 11:31 AM
Yes.. And 80% is true enough but the other way to do polyfil is to loosely(sp?) fill the box to the bottom of the sub.

JoseMCeee
03-05-2005, 02:39 PM
^please rephrase? I got lost after 80%

req
03-05-2005, 02:43 PM
jose, thats like 50x too many screws :p:

one screw every 3 or 4 inches is enough man :)

glad to see you got them box clamps. they work like champs eh? anywho. pack it like 50%, then try 70% then keep going.

he only has ONE 12" SE, not two - so 1.5 should be fine.

powersupply
03-05-2005, 04:10 PM
Where did you get those clamps they look quite handy?

cdj
03-05-2005, 04:22 PM
Some interesting reading for you:

http://web.archive.org/web/20021007065602/integra.cyberglobe.net/caraudio/resources/fiberfill/

Acidburn
03-05-2005, 04:46 PM
Where did you get those clamps they look quite handy?

you can get them at Home Depot

AznRevlAzn
03-05-2005, 04:55 PM
anyone here know exactly how much polyfill one should use? Like so and so per square inch or foot?

Acidburn
03-05-2005, 05:05 PM
one pound per square foot IIRC

Jasper
03-05-2005, 07:38 PM
for home audio, its 1/2lb per cube....i dont know how much different it'd be for car audio



and that second pic definately does not look like glue lol :laugh:

1zenlunatic
03-05-2005, 07:47 PM
Here are the instructions copied verbatim from the ACOUSTA-STUF brand polyfill instructions. This is the brand that Partsexpress.com carries.

" For most sealed and vented speakers, .5lb/cuft of enclosure is adequate for damping. Sealed speakers may be loosely stuffed while venting systems should have the walls lined with a layer of fiber(polyfill).

For short transmission lines you should order 1 lb/cuft to have enough fiber to experiment with stuffing density to get proper loading."

I have a 1.25cuft sealed enclosure and i added .75cuft of polyfill to the inside. I loosly packed polyfill onto 4 walls of the enclosure.

Result: Bass hits tighter-cleaner than before.

theCybe
03-05-2005, 07:57 PM
Interesting. I ordered a prefab box, and when it arrived, I noticed the first part of the port was polyfilled;

Polyfilling only the port?

kronik
03-05-2005, 07:57 PM
you can get them at Home Depot

What's their formal name?

Acidburn
03-05-2005, 09:56 PM
What's their formal name?

uhhh... 90 degree angle clamps
i dunno

JoseMCeee
03-05-2005, 10:47 PM
yea 90 degree clamps. 9 bucks max at homedepot. Ok I bought 20 OZ of polyfill now what shoud I do? I kinda got an idea of how much to use but how do I put it in? Just lay it through the walls? Staple it? Glue it?

Moe Lester
03-06-2005, 12:11 AM
your battery would last 4-5x longer if you used 4-5x less screws :p:

JoseMCeee
03-06-2005, 12:57 AM
^whys that?

JAZN
03-06-2005, 01:52 AM
^whys that?
because screws have a forcefield around them that completely disrupts anything electrical within a 5m radius, that can only be overcome with the force of the jedi. :p:
i think hes just messing with u. ;)

Acidburn
03-06-2005, 02:38 AM
^whys that?

because you wouldnt be using your drill to drill and screw as much
with 4x less screws, your batt would last 8x as long since you have to drill AND screw

JoseMCeee
03-06-2005, 03:03 AM
o yea i figured that out. For some reason I though that u were talkin about the car battery. Like if the more screws u use the more watts u need = dead car batt. Lolz But yea I get it now.

Acidburn
03-06-2005, 03:05 AM
o yea i figured that out. For some reason I though that u were talkin about the car battery. Like if the more screws u use the more watts u need = dead car batt. Lolz But yea I get it now.

hahahha thatd be some weird mixed up car

JAZN
03-06-2005, 03:12 AM
o yea i figured that out. For some reason I though that u were talkin about the car battery. Like if the more screws u use the more watts u need = dead car batt. Lolz But yea I get it now.
ur not the only one that thought that *looks around*

Acidburn
03-06-2005, 03:14 AM
ur not the only one that thought that *looks around*

hahahha you guys are so silly

theCybe
03-06-2005, 05:02 AM
x2. I thought that. I admit it ;)

JAZN
03-06-2005, 05:52 AM
ohhh i get it. first jose said he couldnt finish because he ran outta batteries on his drill. so then moe says to use less screws so he can conserve battery life. see i knew there was a reason im going to college, just never thought i'd use my knowledge so soon.

Buckshot
03-06-2005, 02:45 PM
ohhh i get it. first jose said he couldnt finish because he ran outta batteries on his drill. so then moe says to use less screws so he can conserve battery life. see i knew there was a reason im going to college, just never thought i'd use my knowledge so soon.

HAHAHAA, you guys crack me up. :p: :greedy:

JoseMCeee
03-06-2005, 07:30 PM
^well at least I dont feel like a dumb *** sayin that I thought he was talkin about the car batt :rolleyes: