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06-29-2009, 08:54 PM
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#1 |
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yellow s10 dude
 Age: 25
Join Date: Aug 2007
Posts: 198
Location: User is: OffLine |
4th order bandpass in the bed....4 12's
Well, i finally got the guts, and the money, to finally build a 4th order bandpass box in the bed of my truck. I just started on it the other nite, so far this is what i got. Still got LOTS of finishing and other little touches to do to it but its a start... o, btw, only the 2 top ports are actually ports...
    And here are the subs, All new RE Audio SEx 12's. Hopefully four is enough    
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06-29-2009, 09:14 PM
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#2 |
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Registered User
 Join Date: Mar 2009
Posts: 1,000
Location: User is: OffLine |
Re: 4th order bandpass in the bed....4 12's
gotta question...what would be the advantage over doin a 4th order and just a reg. ported box?? lol and whats powerin them??
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06-29-2009, 09:30 PM
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#3 |
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Registered User
 Join Date: Jan 2007
Posts: 800
Location: West Palm Beach,Fl User is: OffLine |
Re: 4th order bandpass in the bed....4 12's
I heard bandpasses suck a$$ in a blowthrough
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06-29-2009, 09:37 PM
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#4 |
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yellow s10 dude
Age: 25
Join Date: Aug 2007
Posts: 198
Location: User is: OffLine |
Re: 4th order bandpass in the bed....4 12's
efficiency for the most part... and the fact that it carries a good passband.
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06-29-2009, 09:37 PM
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#5 |
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Registered User
Age: 37
Join Date: Jun 2009
Posts: 14
Location: User is: OffLine |
Re: 4th order bandpass in the bed....4 12's
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06-29-2009, 09:41 PM
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#6 |
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Registered User
 Age: 40
Join Date: Feb 2008
Posts: 130
Location: Bryant, AR User is: OffLine |
Re: 4th order bandpass in the bed....4 12's
I had a 4th order bp passthrough in my reg cab with two Fosgate P3 12's. Even with a small amp, 200watts, it jammed really hard. I only had the two 6" ports blowing through the cab wall too. Can't imagine what 4 12's with those two huge ports is gonna do.
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06-29-2009, 09:44 PM
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#7 |
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Registered User
Age: 36
Join Date: Mar 2009
Posts: 285
Location: User is: OffLine |
Re: 4th order bandpass in the bed....4 12's
not worried about it getting stolen? i worry about my one kenwood 10 and amp
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06-29-2009, 09:46 PM
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#8 |
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yellow s10 dude
Age: 25
Join Date: Aug 2007
Posts: 198
Location: User is: OffLine |
Re: 4th order bandpass in the bed....4 12's
i think alot of it has to do with the fact that the box tuning changes when u load it in something like a standard cab. every little thing will affect the way a bandpass box sounds and the way it presents load on the woofer(s). its a ported box within a ported box when its blown thru a cab-more or less.... or summin like that lol....
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06-29-2009, 09:49 PM
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#9 |
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bah humbug
Age: 27
Join Date: Feb 2007
Posts: 378
Location: Kingston User is: OffLine |
Re: 4th order bandpass in the bed....4 12's
looking good. Keep up with the pictures.
There is nothing wrong with a bandpass enclosure, just so long as it is properly designed and built for the drivers that are being used. Great sound quality can be achieved. |
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06-29-2009, 09:53 PM
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#10 |
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Registered User
Join Date: Mar 2009
Posts: 1,000
Location: User is: OffLine |
Re: 4th order bandpass in the bed....4 12's
also i heard that blwothroughs will make the tuning of ur box lower if the port is to far away from the cab openeing...sorry dont mean to jack ya thread. lol
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06-29-2009, 09:55 PM
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#11 |
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yellow s10 dude
Age: 25
Join Date: Aug 2007
Posts: 198
Location: User is: OffLine |
Re: 4th order bandpass in the bed....4 12's
thanks! yea, i'm not worried bout anything getting stolen. the box will be bolted down and it will take 3 people to lift it out anyways lol plus i got a tonno to keep things "under wraps".
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06-29-2009, 09:57 PM
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#12 |
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yellow s10 dude
Age: 25
Join Date: Aug 2007
Posts: 198
Location: User is: OffLine |
Re: 4th order bandpass in the bed....4 12's
the port actually will protrude into the cab about 2 inches roughly so that shouldn't be a problem... the only thing that worries me is the fact that i'm cuttin a big-damn hole in my cab lmao
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06-29-2009, 10:05 PM
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#13 |
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My mirror hates my sub
 Age: 24
Join Date: Aug 2005
Posts: 9,291
Location: Noblesville,in User is: OffLine |
Re: 4th order bandpass in the bed....4 12's
keep the pieces and cut it with a sawzal.. the line is fine enough it can be rewelded in..
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06-29-2009, 10:17 PM
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#14 |
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yellow s10 dude
Age: 25
Join Date: Aug 2007
Posts: 198
Location: User is: OffLine |
Re: 4th order bandpass in the bed....4 12's
yea.... it should be ight! but i guess i'll find out later, maybe this weekend, what exactly it's gonna sound like... I need to get a better amp down the road but for now, i'm goin to try a....PA 5500 BAMF -grits teeth-
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06-30-2009, 12:30 AM
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#15 |
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ZzzzZZoooOOOmMmMMmm
 Age: 25
Join Date: Nov 2005
Posts: 1,679
Location: West Lafayette, IN User is: OffLine |
Re: 4th order bandpass in the bed....4 12's
make some noise
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07-02-2009, 07:39 PM
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#16 |
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yellow s10 dude
Age: 25
Join Date: Aug 2007
Posts: 198
Location: User is: OffLine |
Re: 4th order bandpass in the bed....4 12's
well, i got to work on the box a lil bit this week after work... all thats left is to put the top on it, seal the box with something, cut the bed/cab and slide'er on in and see what it sounds like
here are a few teasers for now......    Last picture before they get covered up....  
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07-03-2009, 10:36 PM
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#17 |
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Got Art?
 Age: 24
Join Date: Dec 2005
Posts: 8,972
Location: Athens, OH User is: OffLine |
Re: 4th order bandpass in the bed....4 12's
if youre going through all that effort why not build a 6th order bandpass to extend your frequency range and flatten your response?
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07-04-2009, 08:37 PM
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#18 |
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yellow s10 dude
Age: 25
Join Date: Aug 2007
Posts: 198
Location: User is: OffLine |
Re: 4th order bandpass in the bed....4 12's
i had to keep everything under the tonno cover and still have room around the tailgate to put things...its an everyday driver.... just didn't have room 4 6th order...
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07-04-2009, 10:36 PM
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#19 |
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Got Art?
Age: 24
Join Date: Dec 2005
Posts: 8,972
Location: Athens, OH User is: OffLine |
Re: 4th order bandpass in the bed....4 12's
could have gone with less or more space efficient subs (high BL and possibly VAS)
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07-05-2009, 12:35 AM
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#20 |
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Registered User
 Age: 23
Join Date: Apr 2008
Posts: 1,679
Location: London Ky User is: OffLine |
Re: 4th order bandpass in the bed....4 12's
Looks like its gonna pound Keep the pics coming
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07-05-2009, 01:58 AM
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#21 |
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UN-BANNED B!TCHES!!!!!
 Join Date: Jan 2007
Posts: 6,950
Location: Verizon's iPhone4 User is: OffLine |
Re: 4th order bandpass in the bed....4 12's
i hope you aint pushin that with a 4cyl.
looks good, oughta sound tight......... |
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07-05-2009, 10:55 AM
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#22 |
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Eric
 Join Date: Feb 2008
Posts: 2,927
Location: The good ol' Keystone state. User is: OffLine |
Re: 4th order bandpass in the bed....4 12's
So what are the overall exterior dimensions?...This thing looks huge for a daily. haha
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07-05-2009, 08:26 PM
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#23 |
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Registered User
Join Date: Jul 2009
Posts: 2
Location: User is: OffLine |
Re: 4th order bandpass in the bed....4 12's
wouldn't a more efficient sub be the same a going through all that work?
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07-05-2009, 08:48 PM
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#24 |
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Got Art?
Age: 24
Join Date: Dec 2005
Posts: 8,972
Location: Athens, OH User is: OffLine |
Re: 4th order bandpass in the bed....4 12's
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07-06-2009, 01:47 AM
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#25 |
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Registered User
 Age: 23
Join Date: Feb 2006
Posts: 525
Location: Jacksonville, FL User is: OffLine |
Re: 4th order bandpass in the bed....4 12's
ohhh man im gonna be doing this same thing with 4 w6s n a soundstream 6500
n a few days.........i like the build man!!! wish i could hear it
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07-06-2009, 05:55 AM
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#26 |
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Got Art?
Age: 24
Join Date: Dec 2005
Posts: 8,972
Location: Athens, OH User is: OffLine |
Re: 4th order bandpass in the bed....4 12's
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07-06-2009, 08:52 PM
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#27 |
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yellow s10 dude
Age: 25
Join Date: Aug 2007
Posts: 198
Location: User is: OffLine |
Re: 4th order bandpass in the bed....4 12's
well, had a few minutes after work today to work on my box.... got the box all sealed and test fitted it to the truck, cut the cab/bed, and slid it in and played it 4 a second...... F-N-wow... i like lol But i gotta finish the cuts and run my boot and paint-seal the box and then mount the amp etc,etc.... but it should be play-able by the weekend
     AND it lowered the truck too.......lol 
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07-06-2009, 09:02 PM
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#28 |
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Registered User
Age: 40
Join Date: Feb 2008
Posts: 130
Location: Bryant, AR User is: OffLine |
Re: 4th order bandpass in the bed....4 12's
Did you leave any lip on the bed for the boot seal? I don't see any.
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07-06-2009, 09:11 PM
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#29 |
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yellow s10 dude
Age: 25
Join Date: Aug 2007
Posts: 198
Location: User is: OffLine |
Re: 4th order bandpass in the bed....4 12's
yea... its plenty there just can't see it in the pics.
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07-07-2009, 07:22 AM
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#30 |
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Registered User
Join Date: Jun 2008
Posts: 63
Location: User is: OffLine |
Re: 4th order bandpass in the bed....4 12's
I thought you said you built the box so there would be some room by the tail gate? I hate to tell you, but I think your box ate your tail gate!!
Looks awsome!! |
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07-07-2009, 09:40 PM
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#31 |
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yellow s10 dude
Age: 25
Join Date: Aug 2007
Posts: 198
Location: User is: OffLine |
Re: 4th order bandpass in the bed....4 12's
once again, had a few minutes after work to work on the truck..... got to strip out some of the interior, rewire the door and dash speakers, add new rca's, and add new power wire.... gotta clean up the wiring and the cuts and hopefully i can reinstall everything thursday..... and MAYBE make it to Crutchfield's MECA bass off this weekend
     
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07-09-2009, 10:32 PM
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#32 |
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yellow s10 dude
Age: 25
Join Date: Aug 2007
Posts: 198
Location: User is: OffLine |
Re: 4th order bandpass in the bed....4 12's
well, worked on it AGAIN tonite, almost finished up. Got the box polyurethaned, got all the wiring done-just gotta clean it up, & made a cover panel, and hopefully tommarow it will be done....
   
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07-09-2009, 11:23 PM
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#33 |
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Registered User
Join Date: Mar 2009
Posts: 1,000
Location: User is: OffLine |
Re: 4th order bandpass in the bed....4 12's
wow i'm ready for some numbers
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07-10-2009, 02:48 AM
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#34 |
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Eric
Join Date: Feb 2008
Posts: 2,927
Location: The good ol' Keystone state. User is: OffLine |
Re: 4th order bandpass in the bed....4 12's
holy crap...that thing is massive. Definitely need to drop the front another inch to level it out.
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07-10-2009, 07:52 AM
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#35 |
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Needs mo POWA!
 Age: 23
Join Date: Jul 2008
Posts: 3,455
Location: K-Town, NY User is: OffLine |
Re: 4th order bandpass in the bed....4 12's
judging by his avatar i believe its bagged but i could be wrong
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07-10-2009, 01:45 PM
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#36 |
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Registered User
 Age: 33
Join Date: Jun 2005
Posts: 3,131
Location: MD User is: OffLine |
Re: 4th order bandpass in the bed....4 12's
looks fun
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07-10-2009, 01:51 PM
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#37 |
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Jobless :(
  Age: 27
Join Date: Jun 2006
Posts: 1,248
Location: Colorado User is: OffLine |
Re: 4th order bandpass in the bed....4 12's
There is no way thats the same truck nor is it bagged the one in his avatar is layin out and in these pics his bed is black and he's not notched
at least thats what it looks like to me. Lets see some numbers!!!
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07-10-2009, 02:30 PM
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#38 |
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yellow s10 dude
Age: 25
Join Date: Aug 2007
Posts: 198
Location: User is: OffLine |
Re: 4th order bandpass in the bed....4 12's
lol.....no its the same truck, i got rearended so i put the hombre black bed on, however the trick is the pic is doctored..... HOPEFULLY i'll have new pics up tonite with the truck finished
btw, it is notched....
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07-10-2009, 03:32 PM
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#39 |
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Registered User
 Age: 30
Join Date: Dec 2004
Posts: 2,215
Location: Point Pleasant, NJ User is: OffLine |
Re: 4th order bandpass in the bed....4 12's
bad ass build man. cant wait to see finished pics.
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07-11-2009, 06:00 PM
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#40 |
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yellow s10 dude
Age: 25
Join Date: Aug 2007
Posts: 198
Location: User is: OffLine |
Re: 4th order bandpass in the bed....4 12's
well, got the box in.... not all the way finished but enough where i can drive it. Took it to Crutchfield to the MECA bass off and won my class.... It felt pretty good @ 148db @ 32hz with the windows sealed.... but i ran out of alternator and battery so i just gave up till i can get it all fixed up.....
 Here's a few pics....     
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07-11-2009, 09:40 PM
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#41 |
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Registered User
Age: 30
Join Date: Dec 2004
Posts: 2,215
Location: Point Pleasant, NJ User is: OffLine |
Re: 4th order bandpass in the bed....4 12's
nice man, congrats
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07-11-2009, 10:12 PM
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#42 |
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b2200
 Age: 23
Join Date: Mar 2008
Posts: 3,187
Location: portage, Indiana User is: OffLine |
Re: 4th order bandpass in the bed....4 12's
congrats and holy crap that must be loud
all i want is one 10" sub in my truck |
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07-12-2009, 05:40 PM
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#43 |
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Got Art?
Age: 24
Join Date: Dec 2005
Posts: 8,972
Location: Athens, OH User is: OffLine |
Re: 4th order bandpass in the bed....4 12's
i was going to say 148 is kind of expected with 4 subs and 1600ish RMS but at 32hz thats pretty crazy
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07-12-2009, 07:42 PM
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#44 |
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Registered User
Age: 33
Join Date: Jun 2005
Posts: 3,131
Location: MD User is: OffLine |
Re: 4th order bandpass in the bed....4 12's
148 at 32 is pretty damn good, bandpass for ya. Whereas everyone else is 148 at 45 or some gay shit
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08-19-2009, 10:57 PM
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#45 |
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My mirror hates my sub
Age: 24
Join Date: Aug 2005
Posts: 9,291
Location: Noblesville,in User is: OffLine |
Re: 4th order bandpass in the bed....4 12's
holy ****!!!! that thing turned out tits!!!
forgot about this thread till tonight. Any vids?? |
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08-19-2009, 11:07 PM
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#46 |
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Eric
Join Date: Feb 2008
Posts: 2,927
Location: The good ol' Keystone state. User is: OffLine |
Re: 4th order bandpass in the bed....4 12's
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08-19-2009, 11:12 PM
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#47 |
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My mirror hates my sub
Age: 24
Join Date: Aug 2005
Posts: 9,291
Location: Noblesville,in User is: OffLine |
Re: 4th order bandpass in the bed....4 12's
gawd damn that thing is NASTY!!!! i like it
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08-19-2009, 11:36 PM
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#48 |
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rolling work in progress
 Age: 22
Join Date: Feb 2009
Posts: 2,081
Location: nlr ar User is: OffLine |
Re: 4th order bandpass in the bed....4 12's
watched your video, and i think your back window will leak in a few months. my bros back wall don't move that much and now the seal is cracked, its like a steady stream in spots
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08-20-2009, 12:56 AM
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#49 |
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00 S10
 Age: 23
Join Date: Mar 2008
Posts: 423
Location: Oklahoma User is: OffLine |
Re: 4th order bandpass in the bed....4 12's
nice work man!
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08-20-2009, 07:58 AM
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#50 |
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yellow s10 dude
Age: 25
Join Date: Aug 2007
Posts: 198
Location: User is: OffLine |
Re: 4th order bandpass in the bed....4 12's
lol....i'll post up some new vids and pics today or tommarow. I'm about to install the 2500-1bd Rockford amp and sell the amp i've got now.....hopefully it'll be a smidge louder...
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