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Box Help Needed 4 15" XLs on DC 12k


skyhighcaraudio

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Posted

So im starting to play with my box a bit more to try to get some more of those deeeebeez out of it

My subs are DC Audio XL 15s

They run off at 12k at .5 ohm nominal load

My box right now is 13.2 total after all displacements so total of 3.3 per sub. Tuned at 36 hz

If I add another piece of MDF on the inside of the drivers and passenger side walls of the box it will displace .45 cubes more bringing my box down to 12.75 total cubes and 3.1875 per sub.

All my XLs have stock suspension no extra anything BTW

What do you guys think?

Any input will be considered

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Posted

Pics of box and port. What your port sq in? And what's your best numbers.

TEAM DC AUDIO

VEHICLE:98 chevy tahoe 2wd 3-4 drop

HEADUNIT:alpine 9886

PREAMP:arcaudio

FRONT STAGE:4-6 1/2s selinium,DD component set and 4-selinium tweeters in each door

KICKPANELS:jl audio 5 1/4

REAR DOORS: dd components 6 1/2s

HIGHS AMPS:zapco 750.2 on front doors,zapco an another 750.2 on kicks and rear doors

SUBS:4-ascendant audio 18s with 5 spiders in a custom box built by KINGSUV

SUB AMP: 2-dc7.5s

ALTERNATORS: 3-mechmans 1- 425comp, 1-smd spec350, 1-270 with adj voltage harness on custom dc bracket

WIRE:10-runs 0g front to back

BATTERIES:6-d1400s

TL results:157.1 at 38hz and 156.8 at headrest score @37hz. STATE AND NATIONAL RECORD IN MECA S5.

Posted

10SideViewNoFront.jpg

15TestFlushMounts.jpg

161 square inches of port area (its as big as i could fit all firing up)

151.5 is my best on music at 48 hz (probably a bit louder than that now it'll play 151.1 at 36 hz as of today because of messing with 45s in the box)

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Posted

Anyone?

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Posted

are you having any thermal or mechanical issues with that much power on them? or just trying to get louder?

first thing that hits me is more port.

THERE IS NO BUILD LOG!

1998 Chevy Silverado ext cab

Alpine CDA-9887

4 Team Fi 15s

2 Ampere Audio TFE 8.0

2 Ampere Audio 150.4

3 Digital Designs CS6.5 component sets

Dual Mechman 370XP Elite alternators inbound!

8 XS Power d3400

6 XS power d680

Second Skin

Stinger

Tsunami Wiring

Sky High

A Real Voltmeter not a piece of shit stinger.

Posted

are you having any thermal or mechanical issues with that much power on them? or just trying to get louder?

first thing that hits me is more port.

no problems at all lol they eat the power up just wanting to mess with it to get louder

I wish now that i could add more port but theres no room...the subs are touching the port and the outside of the subs all touch and touch the outside of the box lol

and i like how they positioned with it all up..next box will be subs forward port up then i can have wayyyy more port area

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Contact us for the best quality cables and accessories with the fastest shipping in the industry

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ADD ME ON FB: https://www.facebook.com/jon.rabe.1

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