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Can two 18"s be louder than four 15"s in a jeep grand Cherokee no wall.


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Hello everyone. Here's my question that I'm debating with my self. Can two 18"s be louder than four 15"s in the same or less airspace... Meaning I have space for four 15"s in my jeep which I no would pound hard as he'll, but I have had two sub setups were it pounding just as hard , and I'm guessing it's

Because the two 15" box was a lot smaller than the four 15" box , which ended up I guess allowing more air to come to the front instead of the bass getting trapped with a four 15" box. I'm Intrested in either two 18"s or four 15"s preferably sundown audio zv3 15"s or two niteshade 18s. The 15"s can go in a box thats 12 to 13 cubes and the two 18"s 8 to 10 cubic ft. I love the sundown line because they dn require big boxes like most subs. Any opinions on this will be much appreciated.

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I'd be shocked if the 18s were louder because they are less cone area. 2 18s are 508.68 SqIn and 4 15s are 706.49 SqIn so unless you have another issue, like the port being choked off by the tail gate because the box is too close or something like that I think the 4 15s would be the way to go.

HU: Pioneer

Highs: 2X 4X6"s, 2X 3.5"s, 4X 5.25" comps, Q-Logic kicks, and a Sundown SAX-125.2

Subs: 4 Nightshade 15s and Strapped SAZ-3500Ds <---Sundown FTW good.gif

Electrical: dual DC Power 320s (ordered) and 2 D3400s up frt and 4 D2700s in the back

.ʇı ɥʇıʍ ʞɔnɟ ʇ,uɐɔ noʎ 'ʞɔıp ǝɹos ɐ ǝʞı1 sı uʍopunS

26d2fe1a.jpg0969b13f.jpg343030b8.jpg

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I'd be shocked if the 18s were louder because they are less cone area. 2 18s are 508.68 SqIn and 4 15s are 706.49 SqIn so unless you have another issue, like the port being choked off by the tail gate because the box is too close or something like that I think the 4 15s would be the way to go.

I say the four 15 box is a about 5 inches from the tailgate , the 18" box would be about 7 to 8 inch from the tailgate. I see all these guys on YouTube running two 18"s and being crazy loud.

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But how big is the port? I think you're gonna want the box to be at least as far away from the tailgate as the width of the port. Maybe someone knows better but I think that's the "rule".

HU: Pioneer

Highs: 2X 4X6"s, 2X 3.5"s, 4X 5.25" comps, Q-Logic kicks, and a Sundown SAX-125.2

Subs: 4 Nightshade 15s and Strapped SAZ-3500Ds <---Sundown FTW good.gif

Electrical: dual DC Power 320s (ordered) and 2 D3400s up frt and 4 D2700s in the back

.ʇı ɥʇıʍ ʞɔnɟ ʇ,uɐɔ noʎ 'ʞɔıp ǝɹos ɐ ǝʞı1 sı uʍopunS

26d2fe1a.jpg0969b13f.jpg343030b8.jpg

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All depends man.

Hell my 2-18's were right up with everyones 4-18's.

Like right there.

And in a bigger truck than the guys with tahoes.

Roughly the same power.

2008 California state record holder 157.2 Bassrace2009 California state record holder 157.0 BassraceRollin 50's 158.7db2009 King of Cali Bassrace2009 USACi score 160.5 @ 42hz
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im with ray. its hard to say cuz its not ALL just about cone area. tunning, electrical, and the way the port and subs are faceing all play a roll in both installs and will change between the installs

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All depends man.

Hell my 2-18's were right up with everyones 4-18's.

Like right there.

And in a bigger truck than the guys with tahoes.

Roughly the same power.

DA TRUF!!

12- DC Audio m2Lvl3 12's1- Hertz HSK3 way2- DC5K's2- ZX350.42- Stinger SP1500D batteries in rear3- runs of 1/0ga. to the rearTeam DC Audiodc-banner.jpgdcsoundlab.com

Quality is all in how you take pictures ;) I have plenty of projects that look WAY better on camera then in person :D

crazy to fit so many in so little. Reminds me of some of the porns I've seen?

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Yep Ray is right.. but for me more cone area was louder...what kind of power do you plan on running

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.

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yes 2 18s could be louder then 4 15s. if you had 4 kicker comp 15s vs 2 dc lvl xl 18s. the 18s would be louder but generaly the 15s will be louder cone area is KING

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