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View Full Version : Secrets/Tips to making an enclosure



Chrisku13
10-22-2005, 05:52 AM
I've been reading up on these forums for quite some time, and decided it's time to start posting. I'll be building a box pretty soon for my new Alpine Type-S subwoofer, and thought that a thread giving advice to first-time builders, or even seasoned pros, would be helpful. Any general comments/help would be good.

BassManB
10-22-2005, 08:26 AM
use mdf wood.... NOT particle board :)

jellyfish420
10-22-2005, 08:33 AM
screws every 4 in. closer than that and you'll split the wood.

ruckus
10-22-2005, 11:10 AM
use titebond II wood glue before putting screws

I prefer coarse thread drywall screws.

Also I suggest calculate the box good, if ported be exact. write everything down and draw out on a piece of paper what each cut will be or you might find yourself 1/4" short on a cut.

azbass
10-22-2005, 11:15 AM
dont use terminal cups, just drill a hole big enough for the speaker wire to pass through, tigh a knot on the inside of the box and seal it up.

iceteebone
10-22-2005, 11:18 AM
you can also use 100% silicone sealant for the edges to make sure there is no air leaks. also it would be better to pre-drill your holes.

danteBirosel
10-22-2005, 12:08 PM
buy corner clamps... if you dont know how they look, click the link on my sig.

djman37
10-22-2005, 12:20 PM
buy corner clamps... if you dont know how they look, click the link on my sig.

x2. Also called frame clamps or right-angle clamps. GREAT for making sure the joint is at 90 degrees.

danteBirosel
10-22-2005, 12:33 PM
and if you do not have a table saw, use a long 2x4 wood and place it on top of the mdf for a straight clean cut. To hold it to place, you use 2 2" C Clamps to hold the 2x4 in place.

jellyfish420
10-22-2005, 01:02 PM
and if you do not have a table saw, use a long 2x4 wood and place it on top of the mdf for a straight clean cut. To hold it to place, you use 2 2" C Clamps to hold the 2x4 in place.
thats a good one. gotta have straight cuts ...

406er
10-22-2005, 10:12 PM
router or smooth ALL port edges and bends

PV Audio
10-22-2005, 11:38 PM
indeed, a router is a must. i'll sell u my table saw for 100 + shipping :)

Lakota
10-23-2005, 01:04 AM
Put wood glue in between the overlapping boards.

PV Audio
10-23-2005, 01:57 AM
Put wood glue in between the overlapping boards.
:confused:

Raisedin305
10-23-2005, 11:53 AM
screws every 4 in. closer than that and you'll split the wood.
Every 4inches or 3inches?

chinny
10-23-2005, 11:57 AM
Every 4inches or 3inches?

Its better to do 4 inches anyway, the screws will just be there to help the glue dry tighter.

danteBirosel
10-23-2005, 12:38 PM
also have a 40oz and a blunt with you, take certain breaks in times, it will keep you focused.




:naughty: :naughty: :naughty:

maldecido33
10-23-2005, 01:20 PM
measure twice, cut once

PV Audio
10-23-2005, 02:51 PM
measure 5 times, cut once is better.

jellyfish420
10-23-2005, 03:20 PM
measure 5 times, cut once is better.
def measure more than twice, especially when your dealing w/ angles

$$mok3d
10-23-2005, 04:07 PM
caulk is your friend be generous with it

406er
10-23-2005, 05:16 PM
caulk is your friend be generous with it


caulk and silicon is the devil. i only us a little on my terminal cups. if your cuts a strights u wont need silicon.

PV Audio
10-23-2005, 05:47 PM
caulk and silicon is the devil. i only us a little on my terminal cups. if your cuts a strights u wont need silicon.
you keep telling yourself that ;)

straight or not, sealing internally is gold.

brad
10-23-2005, 05:56 PM
silicone 4 teh win!! :*******:

406er
10-23-2005, 07:20 PM
you keep telling yourself that ;)

straight or not, sealing internally is gold.


ALRIGHT, all the boxes ive built sealed and ported are airtight. if you use enough glue shoulnt have to use silicon. a friend of mine uses a spray sealer, that actuly penatrates the MDF. its used for roofing.

jellyfish420
10-23-2005, 07:39 PM
caulk and silicon is the devil. i only us a little on my terminal cups. if your cuts a strights u wont need silicon.
terminal cups = teh gay:laugh:

406er
10-23-2005, 08:05 PM
terminal cups = teh gay:laugh:


well for SPL and fiberglass i wouldnt but for daily driver boxes there a must

Blados
10-23-2005, 08:13 PM
well for SPL and fiberglass i wouldnt but for daily driver boxes there a must
Uhh why?

JimJ
10-23-2005, 08:16 PM
I wouldn't call them a must...I also don't like just drilling a hole and sealing it. If you're not going to use a terminal cup, at least get a good set of binding posts and use those to attach your cables.

But if you do anything with bi-wiring, then they become very attractive to use :)

PV Audio
10-23-2005, 08:16 PM
well for SPL and fiberglass i wouldnt but for daily driver boxes there a must
you have no logic at all, just simply none.

PV Audio
10-23-2005, 08:17 PM
ALRIGHT, all the boxes ive built sealed and ported are airtight. if you use enough glue shoulnt have to use silicon. a friend of mine uses a spray sealer, that actuly penatrates the MDF. its used for roofing.
glue is meant to bond the wood, not seal the wood. thats why on sealant tubes it says not an adhesive, and on glue it says not to be used as a sealant.

req
10-23-2005, 09:00 PM
silicone is always a good idea, even if its not technically needed. screws every four inches is a good tip, straight cuts are nESSICARY (and sometimes hard), corner clamps are a **** good tool if you can get some, a jigsaw for the speaker hole (or a plunge router and jig if you got one is a better way to go), if you dont have a plunge router, get a piece of cardboard (this is for tracing the circle) and draw a line the RAIDUS of the MOUNTING DEPTH of the speaker on it - one end screw into the CETNER of where your speaker will be, the other, poke a hole and use it as a compass to draw the cricle :)

drill hole, cut with jigsaw - easy :)


um... the top and bottom of the box are always the entire width, and entire length of the box.... two opposite sides are always overlapping the other two sides.... and if you port, i always buld the "port+baffle" section seperate, then connect to the box.

PV Audio
10-23-2005, 09:06 PM
you mean mounting diameter :)

ruckus
10-23-2005, 10:10 PM
hmm i have to admit im stumped on this one, whats wrong with terminal cups? plastic too thin or something?

Race
10-24-2005, 01:06 AM
Don't try to use fiberglass mat in place of fleece on your first layer using fiberglass in your enclosure. LOL