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Chevy 4th order blowthrough


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Posted

Gonna be a late night

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i was thinking leave the 12 sitting in the box in the hole and duck tape from the bottom of the sub to the bottom of the baffle so the sub doesnt free air. would that work?

Posted

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i was thinking leave the 12 sitting in the box in the hole and duck tape from the bottom of the sub to the bottom of the baffle so the sub doesnt free air. would that work?

Posted

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i was thinking leave the 12 sitting in the box in the hole and duck tape from the bottom of the sub to the bottom of the baffle so the sub doesnt free air. would that work?

Posted

looking really good!!!

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Posted

Thanks for the replies! We have been putting in some long hours. Back at it this morning. Goal for today:

Get hole cut in cab/bed

Structure opening with angle

Get the box in and lag bolted to the bed

Finish putting in screws on the bottom of box

Also I want to hear everyone's opinion on 4th order ratios. We built a 4th in my buddys truck and it has more sealed area than ported, kills the lows. 1800w on 10 Kenwood 12s.

I will have more ported than sealed but I have been asked already why I'm going with so much sealed. Its 10 sealed and 14 ported after subs/bracing. Will be pushed by a brz1700 so I'm not running 10000 watts just yet. Gonna get me a full throttle and head to my boys to get to work! Pics tonight.

i was thinking leave the 12 sitting in the box in the hole and duck tape from the bottom of the sub to the bottom of the baffle so the sub doesnt free air. would that work?

Posted

yeah the one your building is a 1.4 to 1 ratio which is pretty good. alot of people like 2 to 1 ratios becuase they provide a little better output . the bigger you make the ratio the more output the box will provide but it will also have a more peaky response. and the smaller the ratio the output might be less but it will be more musical. i think yours will be pretty good being 1.4 to 1. it sould be able to play a wide range of frequencies / songs.

2000 Dodge Durango

Subs - (2) SKAR VVX 15 D2's

Box - 7.2 ft^3 @ 33hz, 120 in of port

Sub amp - Digital Designs M2 @ .5 ohm

Mids + Highs - PRV Audio

Mids + Highs amp - Hifonics 2000.4

Headunit - Alpine CDE-100

Equalizer - Clarion EQS746

Batteries - Mopar group 27 + (2) C&D 52ah

Wiring - 1/0 BIG 3, (2) runs 1/0

Alternator - Singer 250A

147.79 dB @ 35hz - burp - sealed on dash

147.47 dB @ 35hz - music - sealed on dash

YOUTUBE: http://www.youtube.com/user/321slapinBass/videos

SKAR_468x60.jpgDD-1.jpg

Posted

In and playing. Started with a 12" long port

i was thinking leave the 12 sitting in the box in the hole and duck tape from the bottom of the sub to the bottom of the baffle so the sub doesnt free air. would that work?

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