The Batmobile 4th order! 2 18's!

[kryptonitewhite 1]

What subs should we use for 4th order BP? We want a LOW tune around 25Hz-30Hz. Plenty of airspace available, 2 20"x20" square ports. 2 18's. Run off either one or two AP30001Ds.

[Julian 641]

is that a monte carlo?

[erik67111 1]

2 aa mayhems ftw

[aimone 4]

looks like a riviera not a monte

[kryptonitewhite 1]

2 aa mayhems ftw

mayhems hellz ya!

apx. 10 cu ft for the front (vented) chamber and apx. 20 cu ft for the rear (sealed) chamber. 2 10" ports.

[lilwhteranger 2]

thats crazy. lol. this seems like its gonna be an awsome build.

[kryptonitewhite 1]

Exodus Audio Maelstrom-X 18"

1) Speaker Parameters

Diameter: 18.00 (inches)

Qts: 0.37

Fs: 17.40 (Hz)

Vas: 11.05 (cubic feet)

= 312.90 (liters)

S: 0.70 (response curve - .4 thru .7)

--------------------------------------------------------------------------------

2) 4th Order Bandpass Cabinet Parameters

Lower 3db Rolloff: 20.00 Hz (F3 Provided by user)

High 3db Rolloff: 53.89 Hz (Calculated)

Sealed Box: 4.32 cubic feet

= 7458.70 cubic inches

= 122.24 liters

Ported Box: 2.96 cubic feet

= 5122.98 cubic inches

= 83.96 liters

Tuning Frequency: 32.83 Hz

--------------------------------------------------------------------------------

3a) If using a Single Port

User definable port size:

Port Diameter: 8.00 inches (203.20 mm)

Port Length: 36.47 inches (926.43 mm)

Suggested: (.3 X Speaker Diameter)

Port Diameter: 5.40 inches (137.16 mm)

Port Length: 15.33 inches (389.47 mm)

[stocks 2]

that is the ugliest riviera i have ever seen. good luck doing.. whatever it is you are doing. looking at your other builds you're gonna need it

[CadillacMatt 31]

Interesting car, is that all fiberglass work?

[kirill007 52]

2 aa mayhems ftw

mayhems hellz ya!

apx. 10 cu ft for the front (vented) chamber and apx. 20 cu ft for the rear (sealed) chamber. 2 10" ports.

I'm sorry if i'm wrong, but don't you need to have a bigger ported chamber then the sealed chamber?

I think i read that a 2:1 or 3:1 ratio get's good results.

EDIT:cranberryyumyum, why are you a troll?

No need to be so negative, if u haven't got any critisism that is usefull or nothing positive to say why say it?

Edited July 22, 2010 by kirill007

[stocks 2]

get off my balls? don't call me a troll krill. his projects are full of fail. constructive criticism? okay. that is one of the ugliest cars i have ever seen. junk it. then look through the forums and find out how to a proper build

[kryptonitewhite 1]

Interesting car, is that all fiberglass work?

Hey Matt, He cut a sheetmetal "wall" to support steel tubes, used masking tape as the moulding agent, then hit it with glass matt and resin. The front part of the curves is steel, sheetmetal.

[kryptonitewhite 1]

2 aa mayhems ftw

mayhems hellz ya!

apx. 10 cu ft for the front (vented) chamber and apx. 20 cu ft for the rear (sealed) chamber. 2 10" ports.

I'm sorry if i'm wrong, but don't you need to have a bigger ported chamber then the sealed chamber?

I think i read that a 2:1 or 3:1 ratio get's good results.

EDIT:cranberryyumyum, why are you a troll?

No need to be so negative, if u haven't got any critisism that is usefull or nothing positive to say why say it?

generally yes, but with the MX 18" with the tuning, it was perfect. If we wanted to raise tuning, we could have used the rar chamber and ran the ports throgh the front chamber

He's now going IB though

[kryptonitewhite 1]

Edited August 9, 2010 by kryptonitewhite

[kryptonitewhite 1]

bugs were bad, so sum1 brought the mosquito plant over. could just watch the swarm fly away. neat.

[kryptonitewhite 1]

thats right botches! FOAM! If youre not quick enough to jump on the wagon you get left behind. Did we learn anything with the VAN? yep. did we learn not to use foam? NOPE!

I'll say it again. If you dont use duct tape and foam, youre a piece of ****

[kryptonitewhite 1]

ill say it again! i learned not to do 30-60 cans in 1 day, 15 cans at a time. 1 can on each side early on, 1 more can on each side at the end

sluts

uh huh

but they dont

but they dont

they dont hear me doh

i got blood on my hands cuz I...

I got blood on my....

I'm a nasty ...

[kryptonitewhite 1]

after today, after putting the two "not as blown" IB3's in the 10 cubic foot box tuned to 35Hz, nah, I'm reconin!

The two with the spiders ripped off my girlfriend cut apart and taped the gaps, plus to make things easier to check the batmobile cutouts we took the motor off the basket on the old one.

so much lighter now

chrome V black

funny lookin cigar...

****in right foam again what

[Don Ganso 13]

You do some strange stuff with your build logs, but you gotta risk it to get the biscuit! Way to think outside the box, in several different ways.

[kryptonitewhite 1]

You do some strange stuff with your build logs, but you gotta risk it to get the biscuit! Way to think outside the box, in several different ways.

thanks man, and I dig your sig and your avatar! need a bib.