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djjdnap
07-25-2003, 04:01 AM
does anyone know the sexxx's xmax so i can enter it in here

http://www.loudspeakers101.com/VentCal1.htm

by the way the winisd tells me to tune my box to 22.26hz
not like i know how to do that in the 1st place i just know that, that is very very low..

what would be better to be very loud, comp type stuff 38hz??

from what i've seen 32hz for ereday and 38hz for comps..

is that about right..

paikiah
07-25-2003, 04:12 AM
you could even go for 45 and onwards...
don't trust winISD's given tuning. it's always changeable. I'd go with recommendations of RE, not winISD. :)

djjdnap
07-25-2003, 04:21 AM
ok i found out i can change it...but i dont even know what RE recomends, and david is sleep :rolleyes:

ok peep this though i got a sealed box and i wanna just cut some ports for it...

i'm kinda lost on the measurements though..

it's like h=13..l=30..d=17
height,length, depth..

multiply and get 6630 devide by 1728 and i get 3.836
so my box is 3.8cubed :confused:


but i woudn't mind makin my own box, i've made one b4, neva put it in the car though, I wonder what it would sound like :o , maybe lata...

paikiah
07-25-2003, 04:25 AM
3.8cubes would be gross internal volume. If you had a low tuned port, the volume will reduce quite a bit (maybe reduced to about 3 cubes or smaller, with bracing). If you are tuning for SPL (35Hz and up), then your net volume wouldn't reduce as much. :)

paikiah
07-25-2003, 04:28 AM
wait, i forgot about wood displacement...
you should multiply 12.25" X 29.25" X 16.25" (aasuming you use 0.75" MDF) to get a total gross INTERNAL volume of 3.37 cubes. with a daily tuned port, it might be about 2.5~2.8cubes after all displacements.

grizzjwill
07-25-2003, 04:30 AM
Ok im pretty sure that david doesnt reccomend a sealed box for it and for a ported box he reccomends 3 cu tuned to 32 or around in there. Im not absolutley for sure on that but thats what im thinking

paikiah
07-25-2003, 04:32 AM
if David recommends 3, then I suggest starting off with about 4 cubes sealed box plan and incorporate a port. (It's how I do it) It is always easier to fill up space rather than trying to make more.

grizzjwill
07-25-2003, 04:36 AM
if David recommends 3, then I suggest starting off with about 4 cubes sealed box plan and incorporate a port. (It's how I do it) It is always easier to fill up space rather than trying to make more.ah he11 jsut do 5 cu tuned to 35 like mine i mean david doens tknow what he is talking about anyways :D but i would say anywere form 2.5 to 5 cu tuned to anywere from 30 to 35 would be fine it just really depends on what you want out of it

djjdnap
07-25-2003, 04:42 AM
the sealed box sounds coo, it's a prefab :p , i think i blew the wire connection holder thingy??you know wt the red and black connection, well anyway, i went to change the wire inside for the speakers cuz i thought it wasn't big enough, and the thing simply came off, but it's not a big problem..


ok this sounds like a project to do this weekend,
3cube box tuned to 32hz

lets do some calculations here,hehehe

ok i dont know the displacement of the subs nor the ports, yet
but i came up wt 12.25x30.25x18.25/1728=3.91-other displacements

paikiah
07-25-2003, 10:29 AM
the wire connector thingy that you speak of might be the terminals then? No problem, solder the wires in place and you're good to go. :)

as for your current gross internal volume box, 3.91 is a good place to start. Most 12" drivers won't go over 0.1cube displacement, and with about 0.3 for port and port wood. That'd leave you with roughly 0.5 cubes. That can easily be filled by making a displacement box inside the box, or you can choose to have 0.5 cubes worth of bracing for the box, seeing that you have a 30" stretch to do for box width.

JeremyD
07-25-2003, 12:53 PM
by the way the winisd tells me to tune my box to 22.26hz
not like i know how to do that in the 1st place i just know that, that is very very low..

WinISD by default takes the specs of your sub and tries to model it as flat as possible. It does not mean that is the best enclosure for the sub or for your listening taste ;)

Now what size sexxx are you reffering to?

djjdnap
07-25-2003, 06:24 PM
they are 12"

so paikiah u think that would be a good box???

soo, now i just need to figure out how big my ports need to be and how long to make them right..

but i would have to know what cube the box is before...

so make a .5 brace for displacement...and the subs would be .2 combined so thats 3.9 - .7 =3.2 which is roughly around 3cubes right..well if i minus the ports it should be about 2.9-3.0 cubes right..

paikiah
07-25-2003, 09:14 PM
that is about correct. THen again, I do not know if that size will be the optimum for the SEXX's. David should know how it fares in your planned box, seeing that he MADE the sub himself. :)

djjdnap
07-25-2003, 10:58 PM
ok i went to the lil 12volts.com thing and it tells me that if i make my port diameter 3" it should be5.4"long

i think thats all i need now i gotta go get some mdf, 1/4 and get started.. :p

JeremyD
07-26-2003, 12:25 AM
If you can fit it, try about 3 cubes per sub. They will like it :D

paikiah
07-26-2003, 08:30 PM
ok i went to the lil 12volts.com thing and it tells me that if i make my port diameter 3" it should be5.4"long

i think thats all i need now i gotta go get some mdf, 1/4 and get started.. :p
oh no, you don't want 1/4"(0.25") MDF... you want 3/4" (0.75"). :)

djjdnap
07-27-2003, 12:06 AM
turns out i had some 3/4 layin around, hehehe , so thats what i'm usin i'm makin it as we speak, i auta be done by tommorow, just need to cut my speaker wholes, put the box , together, and make my ports, then i'm done :D
but i can't test it cuz my amp is still in the shop :(

paikiah
07-27-2003, 11:02 AM
no amp? SOlution: use wall socket. :D:D:D