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View Full Version : 4 8" 4th Order Bandpass?!?!?!?!



manny1337
12-23-2009, 08:41 PM
Okay well ive got my re x 8 coming in soon (jan 5th) ive got some time to think of a box. Has anyone on here ever done a 4th order bandpass with 8's? Is there any benefits/loss of bandpass over a normal ported enclosure? Who on here can design me a box? or is there anywhere i can find some already made layouts? Just trying to get a better know how about bandpass. thanks :)

john denver
12-23-2009, 08:49 PM
Okay well ive got my re x 8 coming in soon (dec 5th) ive got some time to think of a box. Has anyone on here ever done a 4th order bandpass with 8's? Is there any benefits/loss of bandpass over a normal ported enclosure? Who on here can design me a box? or is there anywhere i can find some already made layouts? Just trying to get a better know how about bandpass. thanks :)


Dec. 5th is already past shouldn't you already have them.

manny1337
12-23-2009, 08:54 PM
oops ment jan my bad :)

manny1337
12-24-2009, 01:08 AM
anyone?

galacticmonkey
12-24-2009, 02:20 AM
Yes.

rosshimself13
12-24-2009, 09:06 AM
I'm gonna ask this because although i dont have your answer, someone who knows how to design a bandpass box would want to know. What are you trying to achieve overall? If you are planning any kind of resemblance to SQ then a bandpass box is not what you want... Properly tuned it will still have a higher rolloff rate than a properly tuned ported box.

manny1337
12-24-2009, 12:43 PM
Im just trying to get these 8's as loud as i can. Does a bandpass box really kill sq that bad? sorry ive never got into bandpass. i guess there is always a time to learn =P

galacticmonkey
12-24-2009, 09:50 PM
I'm gonna ask this because although i dont have your answer, someone who knows how to design a bandpass box would want to know. What are you trying to achieve overall? If you are planning any kind of resemblance to SQ then a bandpass box is not what you want... Properly tuned it will still have a higher rolloff rate than a properly tuned ported box.

Apparently you dont know too much about bandpass. Ive had two 4th orders and they sounded great.

manny1337
12-24-2009, 10:03 PM
well fill me with info :) any link or anything i can read would help :)

z0n3d0u7
12-25-2009, 11:12 PM
google.com

manny1337
12-26-2009, 10:22 AM
oh man thanks for the great tip. already did it though befor i post this topic ;)

iamamp3pimp
12-26-2009, 10:51 AM
so if it is a design you are looking for, i can handle it for you

heres the last 4th order that i designed, it's for a pair of 12's, being build as we speak

http://i35.photobucket.com/albums/d177/iamamp3pimp/Designs/Fisch/4thorderxray3.jpg

heres another, absolutely destroying anything down low, and sounding really nice from what i have been told

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

While these are larger than what you will be working with, i am fully confident that i would be able to design something that would sound how you want it to sound.

given the proper space requirements of course.
shoot me a pm or an email if you are interested, with the dimentions that you are working with.

manny1337
12-26-2009, 10:55 AM
so im assuming with a bandpass the subs die out over 50hz?

iamamp3pimp
12-26-2009, 11:01 AM
I'm gonna ask this because although i dont have your answer, someone who knows how to design a bandpass box would want to know. What are you trying to achieve overall? If you are planning any kind of resemblance to SQ then a bandpass box is not what you want... Properly tuned it will still have a higher rolloff rate than a properly tuned ported box.
While you are correct about the rolloff, its not entirely difficult to make a 4th order play exactly how you want it too.

iamamp3pimp
12-26-2009, 11:03 AM
I'm gonna ask this because although i dont have your answer, someone who knows how to design a bandpass box would want to know. What are you trying to achieve overall? If you are planning any kind of resemblance to SQ then a bandpass box is not what you want... Properly tuned it will still have a higher rolloff rate than a properly tuned ported box.
While you are correct about the rolloff, its not entirely difficult to make a 4th order play exactly how you want it too.


and manny, no, that isnt not true at all. Most of my requests for a 4th order specify that the person wants it to play safely between 20-75 hz

and they do just that.

they are peaky for sure, but they are entirely more efficent and safe at higher power levels than a standard ported enclosure, in my opinion.

manny1337
12-26-2009, 11:18 AM
how much do you charge for a design =P

iamamp3pimp
12-26-2009, 11:21 AM
ygpm

groundpound4200
12-26-2009, 04:24 PM
You know how to do 6th orders?

iamamp3pimp
12-26-2009, 04:30 PM
i do.

i had my wifes old accent doing 135's off of 125 watts and a very low end eclipse 12

MazzaSECv.2
12-26-2009, 04:36 PM
Robin you tempt me real bad to put a 4th order in my Explorer. Just thinking about 4 15"s Nightshades in a fourth order lol

tez4life
12-26-2009, 04:38 PM
Robin you tempt me real bad to put a 4th order in my Explorer. Just thinking about 4 15"s Nightshades in a fourth order lol


Do it, :D

Robin is def the man, knows his stuff very well.

iamamp3pimp
12-26-2009, 04:49 PM
Thanks.

and yeah matt if you do that let me know, id like to help you out.s

MazzaSECv.2
12-26-2009, 04:57 PM
Thanks.

and yeah matt if you do that let me know, id like to help you out.s

Ya ill let ya know as much as I dont wanna wall im sure ill eventually do one lol