The Batmobile 4th order! 2 18's!

[Kryptonitewhite 10+ year member]

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.

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[Kryptonitewhite 10+ year member]

 

[JL Audio 5,000+ posts]

what the f......

 

[RidinSwangaz 10+ year member]

X2 on wtf

 

[NFAMOUZ 10+ year member]

x3 WTF?!

 

[1rockford1 5,000+ posts]

huh

 

[texas dude]

Wtf is that. What do you do if it rains?

 

[marcotheclepto 10+ year member]

uses the batbrella //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif

 

[Cadillac182 10+ year member]

L o l.

 

[JL Audio 5,000+ posts]

holy shitty ripoff batman!

all you need is a batsignal in that ***** to get some mad tang on the streets. In the hood... area of a junkyard.

 

[Kryptonitewhite 10+ year member]

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

 

[Kryptonitewhite 10+ year member]

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)

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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

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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)