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View Full Version : 8-12's vs 6-15's vs 4-18's



atlbraves
02-12-2009, 02:22 AM
I plan on doing a blow through in my truck i measured with the toneau cover on i have around 35 cubes for the whole bed being used inside the fender wells. Recall it was 49x62x20 right around 35 cubes

I will have the power and batteries to back it up at the moment i dont. I will add a 300amp alt, big batt upfront, and 4-8 batteries in the back prob looking into 6

forgot to add a place for batteries so minus about 10" on the length, so prob around 30 cubes is what i will have after i make room for batts and amps. unless i mount the amps inside the cab which i doubt since there is no room for enough amps.

Anyway the subs i am looking into i want to be able to do a 10k watt setup or w/e power is needed to give the rms on the subs. I was looking at possibly BTL, XXX, L7's, IA, or maybe even some nightshades, or maybe some RD's

anyone ever done a big system please post here in which will be louder for daily system only will do some competeing but this will be my daily driver just want to do something unique and very loud. Also concerding type R's haha.

So what setups would give me the best results.

Thanks

oldschool4me
02-12-2009, 02:25 AM
i say 4 btl 18s

Supergumby5000
02-12-2009, 02:25 AM
i would take advantage of the 20" height, maximize the space and use 18's. They'll fit perfect.

azimuth
02-12-2009, 02:25 AM
how are you planning on firing the subs?

CobraStang98
02-12-2009, 02:27 AM
4 15" RD Heavyweights w/ 2 RD 9.0s and call it a day... 4 or more Powermaster D3100s, Powermaster alt, etc.

4 18" BTLs w/ 4 Sundown SAZ-3500s

Random1010
02-12-2009, 02:27 AM
Omega 18"s ;)

RidnClean
02-12-2009, 02:28 AM
18s, i reccomend Omegas :)

MisterGrubbs
02-12-2009, 02:28 AM
6 18" BTLs/Similar. Make room.

:-)

Note - RD Alpha, RD Sonance, FI BTL, RE SX's, Omegas, HDC3's and a million other ones come to mind...

Dun Dun Dunnnnn

atlbraves
02-12-2009, 02:28 AM
not sure and yea i got right in between 19-20" on the height will be a tight squeeze but i think i can do the 18's gives me with the wood if i only use 3/4 mdf looking at 19.5 so should be just about pefect.

I was wanting to fire them foward but cant do that since its not wide enough so prob on each side of the bed facing one another with the port comming from the back of the box running down into where the subs fire.

atlbraves
02-12-2009, 02:30 AM
6 18" BTLs/Similar. Make room.

:-)

no way how much airspace is each 18 gonna take up, plus i got to account for port area as well so tops 35 cubes each 18 needs prob what 6-8 cubes not gonna wor 6x6 36 top room i got is 35 before any displacement, but i will have no room for batts or amps so gonna cut it down to 30 cubes

Random1010
02-12-2009, 02:31 AM
check your inbox

atlbraves
02-12-2009, 02:32 AM
Also looking to do something that can handle for the 18's something that will handle around 2500rms a piece, for the 15's something around 1500 a piece, and the 12's something around 1000 a piece

wanting to stay around 8-10k watts. Figure with a 300amp HO alt big battery upfront andd 4-6 big ones in the back with big 3 done and 4 runs of 1/0 from front to back with 4 runs of grounds to the front battery or frame as well. That should be able to handle 8-10k watts right or am i way off???

Random1010
02-12-2009, 02:34 AM
Yes that should handle 8-10k fine. 12v or 16v system?

atlbraves
02-12-2009, 02:39 AM
12volt not ready to step up into 16 volt or is it not much aggrivation. Something i can do myself or is it too much to mess with

Random1010
02-12-2009, 02:42 AM
12volt not ready to step up into 16 volt or is it not much aggrivation. Something i can do myself or is it too much to mess with

Well if you get a new alt with an adjustable voltage, you'll need some step down mods to cut voltage to your cars electrical.
Or another way is to run a 12v alt and 2 flux caps to put 18v into your back 16v batts

16v is harder and more work but yields more power

bass-aholic
02-12-2009, 02:44 AM
You can give 18's 5 cubes each. You have enough room, but your going to use a single layer of MDF with that many subs and that much power?

atlbraves
02-12-2009, 02:46 AM
ehh i think 12 volts will make me more than happy and running that much power i am sure i wouldnt noitce much diff in 16 compared to 12 since it will be extremly loud anyway

porb be much easier to run 12 and keep the voltage up high as possible to the amps

Supergumby5000
02-12-2009, 02:47 AM
do four 18's like so

| | |
\/ \/ \/

atlbraves
02-12-2009, 02:49 AM
You can give 18's 5 cubes each. You have enough room, but your going to use a single layer of MDF with that many subs and that much power?

well idk thats the thing with 18's facing toward each side of the bed i could only use one piece of mdf, being 18 inches is how wide the sub is plus 1.5 for the wood so 19.5 i only have 20" for height. I could mount the subs facing up or down but i dont think that would give good results would it???

if i need more than one layer and cant have them facing up with good results i can only do 15's then:crying:

haha hows your 18's and how loud do they get for the amount of power u got

atlbraves
02-12-2009, 02:50 AM
do four 18's like so

| | |
\/ \/ \/

yea exactly something like your build is what i am looking into getting with the subs and port exact way you got yours but dont u have 4 15's i beleive

MisterGrubbs
02-12-2009, 02:53 AM
I vote

To be safe/smart with your space

And do 8 15" Type R's on 10k

Or 4 18" SX's on 6k

Or 4 18" Alphas/BTLs/Nightshades/Whatever on 10k

bass-aholic
02-12-2009, 03:02 AM
well idk thats the thing with 18's facing toward each side of the bed i could only use one piece of mdf, being 18 inches is how wide the sub is plus 1.5 for the wood so 19.5 i only have 20" for height. I could mount the subs facing up or down but i dont think that would give good results would it???

if i need more than one layer and cant have them facing up with good results i can only do 15's then:crying:

haha hows your 18's and how loud do they get for the amount of power u got

I have used a lot of different subs in my days, and had quite a few systems and the BTL's are the loudest subs i've ever used. I rarely turn them up full tilt because of how much it hurts. I couldn't imagine how brutal 4 of them would be! If you decide to go with 18's you will not be dissapointed by the BTL's. If you decide to go a different route and use more, less expensive subs FI Q's are my second favorite subs.

atlbraves
02-12-2009, 03:06 AM
i cant do 8 15's or possibly cant do 8 12's bc i will only have around 52-54 for the depth and 8 15's will take up for 4 each side looking at 60" too much

6 15's will take up 45" and i have to figure in the port width at the back of the box too, so prob down to 6 15's or 4 18's leaning to the 18's for cone area and prob cheaper buying only 4 subs and not mayn people have 18's specially 4 of them on 10k in a blowthrough

also 18's would hit lower and be louder but i hear 15's meter better then again who cares its still gonna be super loud and its a daily truck. Also farther back the subs are in the bed the louder it will be in teh cab and more pressure in the cab right??

atlbraves
02-12-2009, 03:59 AM
i think 4 18's is the way i am gonna go looking for some made to handle 2500rms per sub daily, which subs would work the best in that application. Looking to spend around 1500 on the subs. Any advice.

For amp/amps any advice??? Also looking to spend around 1500 for that

DDSC
02-12-2009, 05:02 AM
i think 4 18's is the way i am gonna go looking for some made to handle 2500rms per sub daily, which subs would work the best in that application. Looking to spend around 1500 on the subs. Any advice.

For amp/amps any advice??? Also looking to spend around 1500 for that

what are you looking to spend on wire, batts, alternators, deading ect:greedy: dont forget that stuff

atlbraves
02-12-2009, 04:13 PM
looking to spend about 1k on give or take on batts and a HO alt, 500 on wiring. about 500 on a few sets of comps and a few hundred bucks for a amp for the comps

looking between 5k-6500

Buck
02-12-2009, 04:14 PM
4 TSNS 18"s. ZOMG

Loud3
02-12-2009, 04:15 PM
18's.

but are you REALLY considering $5000-$6500 in audio?

Dude. ******* invest.

Buying a house > Buying a ton of car audio.

atlbraves
02-12-2009, 04:19 PM
why not. Whats so wrong with putting that much money into a system. Unless i can do 4 18's much cheaper then sure post it up. Wanting to do somewhere around 8-10k rms

i see the 15's have slight advantage in cone area but hardly nothing i think the 18's are the way i am going

Loud3
02-12-2009, 04:21 PM
why not. Whats so wrong with putting that much money into a system. Unless i can do 4 18's much cheaper then sure post it up. Wanting to do somewhere around 8-10k rms

i see the 15's have slight advantage in cone area but hardly nothing i think the 18's are the way i am going



Well, because you'll never get that money back.

I would only consider spending that kind of money (in one big lump sum) if it was going to MAKE me money.

It's your money, and if that makes you happy, then go for it!

Be sure to post pics.

:fyi:

atlbraves
02-12-2009, 04:27 PM
Hopefully i can start the build within 6 months hope if not well once i have the cash i will start the build log. I just want something stupid loud and only way i can do any kind of loud is a blowthrough in my truck so why not go all out and do it right the first time

atlbraves
02-12-2009, 07:49 PM
I am thinking of going with 4 18's either BTL's, RD Elite, Omega cascade's, or some Nightshade 18's. What can the nighshades handle.

For 10k watts to run on the 4 18's looking into maybe AB VFL 500.1's a pair of those should give me 10-11k if i keep voltage around 12-13 volts. Figure a 250-300amp alt. 4 runs of 1/0 and 4-6 batteries in the back. Would that work for voltage

mrogowski
02-12-2009, 08:43 PM
I won't spew any 'brands', but rather show you where you can benefit most from the size you select. These numbers are pulled directly from my site but you can apply the same dimensions with whatever brand you decide to go with:

Total Cone Area
4 x 18" = 4116cm2

6 x 15" = 4242cm2

8 x 12" = 3296cm2

atlbraves
02-12-2009, 09:24 PM
yea not much diff in cone area i would rather do the 4 18's much easier far as amps only need one or two amps. and i think 18's will be much lower and louder for daily. Also box build will be much easier

mrogowski
02-12-2009, 09:52 PM
Indeed. Thought I'd put things into perspective for you.