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View Full Version : 3 boxes.which bandpass 4th order??



SWFL
08-04-2009, 01:45 AM
http://i25.tinypic.com/23s6u6u.jpg

http://i28.tinypic.com/5vvdhv.jpg
6cubes net vented side, 9 cubes net sealed side tuned to 46Hz for flat response
audio phill on his design 3rd pic.
Ok, here's what I got so far. The Qts of the drivers is way to high for a 6th order alignment, and the EBP is a little high for them to produce a wide enough bandwidth (3dB down range of 28Hz-75Hz) in a 4th order alignment so the front stage doesnt have to be overly beefy.The 4th order needs twin ports 4" x 20" x 24.75" to get vent mach low enough to produse sound instead of noise. This would situate all four woofers in a lower chamber facing up into the ported chamber with 2 ports one over the other that vented into the blow-through. Size wise, double baffling the enclosure only allows enough net volume for a 4th order design which may be best bet anyhow. This is figuring with Ascendant Audio specs so my design could be as much as 30% off. If you know anyone who could spec them it would help us tremendously at getting the enclosure design right the first time.

heres the winsid for the responses on the graph. This is for 4 15's AA chaos in a blowthrough keep in mind I want something for daily to pound the lows and play good on music a good box for daily not going to compete


http://i27.tinypic.com/2d14kd0.jpg

KyleBechtold
08-04-2009, 01:46 AM
they all are :fyi:

SWFL
08-04-2009, 01:48 AM
they are all bandpass 4th orders?? I know that, or did you mean all are good designs??

If so i am confused how all 3 are spec the 2nd one airspace is totally different so how would they all perform good?? dont know much about 4th orders

KyleBechtold
08-04-2009, 01:51 AM
they are all bandpass 4th orders?? I know that, or did you mean all are good designs??

If so i am confused how all 3 are spec the 2nd one airspace is totally different so how would they all perform good?? dont know much about 4th orders

the last two pics are huge i don't feel like scrolling back and forth to check em out lol.. ask gmonk for a little help if you are in like tampa or so

SWFL
08-04-2009, 02:02 AM
the last two pics are huge i don't feel like scrolling back and forth to check em out lol.. ask gmonk for a little help if you are in like tampa or so

fixed

Immacomputer
08-04-2009, 07:45 AM
That first one has far too little port area.

80INCHES
08-04-2009, 09:29 AM
not to sound biased but #2 looks the best...
1-highest peaking
2-its tuned the lowest
3- its -3db rolloff is the lowest out of all the other designs look closely u can see it
once te incar frequency take effect it will only enhance the design
4-and it has the biggest ported chamber and the biggest port...

80

MisterGrubbs
08-04-2009, 09:42 AM
I would also like to add that the fact you posted these designs freely is probably not a good thing. If I remember correctly you received these from other members? Should always ask them if they mind their design, especially if they're paid for, before posting.

80INCHES
08-04-2009, 09:45 AM
I would also like to add that the fact you posted these designs freely is probably not a good thing. If I remember correctly you received these from other members? Should always ask them if they mind their design, especially if they're paid for, before posting.

AGREED!!!!!!!!!!!!!!
so wat if the design is not paid for? then wat should he do?
80

MisterGrubbs
08-04-2009, 09:48 AM
AGREED!!!!!!!!!!!!!!
so wat if the design is not paid for? then wat should he do?
80

Meaning what? If he hasnt payed for the design yet, or if it were free?

If it's a free design and open to the public, all you're doing is reposting it, not a big deal. You always need to check with the author first though. It's a respect thing bossman.

80INCHES
08-04-2009, 10:18 AM
Agreed

80

iamamp3pimp
08-04-2009, 12:31 PM
Just for the record, if you are wondering why this guy is such a tool

its King Ranch BTW

SWFL
08-04-2009, 03:38 PM
Just for the record, if you are wondering why this guy is such a tool

its King Ranch BTW

for the record who doesnt know that:rolleyes:

the only design that wasnt posted for others to see was the second one, and he made it about 3 weeks ago since then i have asked him several times for his paypal. Even though he never said hey its 10 bucks or w/e. Well today he finally sends me the addy 3 weeks down the road:rolleyes:. Anyway not here to start an arguement. Anyway not many people will have the same size dimensons for that box or the port or same subs so posting the design on here isnt a big deal. how many people have the same subs, same size for a box, and same size for port and want the same result??

iamamp3pimp
08-04-2009, 03:57 PM
what?

BassMechkanic
08-06-2009, 09:58 AM
i quoted him $450 to build that box - 1" mdf, double 3/4 on baffle, tnuts mounting, paint port, corner bracing, round over on all outside edges internally, weather stripping on subs and removable access panel, this box will use a lot of material, do you think i was out of line on my price? if so what is the going rate on a box like this?

dappa5
08-06-2009, 10:19 AM
hell that was a good price i told him $800 for all that plus the blowthru (boot etc...) plus flushed in amp rack all install of subs/wiring/amps resined inside etc... hell for $450 he should drive to tampa

dappa5
08-06-2009, 10:20 AM
p.s. how much is your 1 "mdf up there??
i come up tere all the time maybe i'll p/u some
hard to find here

BassMechkanic
08-06-2009, 11:03 AM
last time i bought 1" it was about $45 a sheet, personally - i would not use it on this box, i would use 3/4 and resin the inside of the sealed chamber and then coat the entire outside, with the bracing i would use and the resin it would be more than enough (it would cost more to build the box with resin - but it would be air tight (and if you did not know 3/4 mdf is not air tight, it will allow air to travel through it, try the shop vac test.)), but i quoted it just as he asked, your price for $800 is about where i would be with all that work, i know that box would be $1000 at a normal shop, and they would not build it nearly as strong, no corner braces, x braces or most dont even router the port edges.

FOSGATE JOE
08-06-2009, 11:20 AM
;)

iamamp3pimp
08-06-2009, 12:07 PM
last time i bought 1" it was about $45 a sheet, personally - i would not use it on this box, i would use 3/4 and resin the inside of the sealed chamber and then coat the entire outside, with the bracing i would use and the resin it would be more than enough (it would cost more to build the box with resin - but it would be air tight (and if you did not know 3/4 mdf is not air tight, it will allow air to travel through it, try the shop vac test.)), but i quoted it just as he asked, your price for $800 is about where i would be with all that work, i know that box would be $1000 at a normal shop, and they would not build it nearly as strong, no corner braces, x braces or most dont even router the port edges.

try again

at a shop that might be over 2 grand.

thats a lot of work for a place that sells prefabs at 250 bucks....

dappa5
08-06-2009, 12:08 PM
thats what i figured i'm @ a shop and was giving my "I'm bored, want something to build"
price but now I'm losing intrest fast

aaronrchr
08-06-2009, 12:14 PM
It's pretty bad that I know exactly who this is even before I open the thread just by the title.

Pick a design, build it, and take pictures so everyone can witness the immense fail.

dappa5
08-06-2009, 12:20 PM
hey he's arcadia why don't you offer to build it for him lol

iamamp3pimp
08-06-2009, 12:22 PM
because he is a pain in the ***

dappa5
08-06-2009, 12:24 PM
ya think?? lol

dappa5
08-06-2009, 12:24 PM
robin was that a bad price i gave him ??

BassMechkanic
08-06-2009, 12:51 PM
i guess the OP has history on this forum?

aaronrchr
08-06-2009, 01:41 PM
because he is a pain in the ***

x7654345678

iamamp3pimp
08-06-2009, 01:54 PM
short history w me yes



and no thats a really good price dappa.

do you have a shop?

dappa5
08-06-2009, 03:02 PM
total access to a shop my boy owns i build
i keep all my box shiz there

iamamp3pimp
08-06-2009, 03:05 PM
cool.

where at?

I should get an invite one day.

iamamp3pimp
08-06-2009, 03:07 PM
help you build one of these

http://i35.photobucket.com/albums/d177/iamamp3pimp/Designs/finishedprelim.jpg

dappa5
08-06-2009, 03:16 PM
lol thats nice did you put that in some thing??
port charlotte btw bout 100 mi south of you

iamamp3pimp
08-06-2009, 04:31 PM
not yet, its for another member.

BassMechkanic
08-06-2009, 05:48 PM
any of you down there ever heard of tint and audio express?

dappa5
08-06-2009, 06:05 PM
where is it?? not around me maybe in ft myers or the cape

BassMechkanic
08-06-2009, 06:16 PM
they use to be in fort myers, but now are here in Tampa, just trying to see what there Rep is

iamamp3pimp
08-06-2009, 06:28 PM
never heard of em....

BassMechkanic
08-06-2009, 06:31 PM
now they are T&A - on Dale mabry next to dejavue

80INCHES
08-07-2009, 01:39 AM
help you build one of these

http://i35.photobucket.com/albums/d177/iamamp3pimp/Designs/finishedprelim.jpg

IS THAT the box u told me about over the fone?

if sooo good lawd that looks sick

80

MazzaSECv.2
08-07-2009, 02:06 AM
If I ever do a wall its definetly gonna be a 4th order lol

And I am gonna have Robin do it! :)

If he doesnt mind lol

BassMechkanic
08-07-2009, 09:01 AM
what program do you use to do those 3d drawings?

dappa5
08-07-2009, 09:25 AM
not to speak for robin but that's sketchup