Actually, SPL woofers tend to have lower efficiency. SQ woofers are normally the ones with high efficiency. Also if your going ported I would recommend tunning for a hz that is lower then what appears in most music. Meaning something in the 20 to 25hz range for your port since 30 range is pretty common.

 

4- infinty 12" references
2- infinity class D 1300 x 1 RMS amps
1- 5 Farad power Acoustik Cap
6- Infinty coaxle speakers
1- Alpine Cd/MP3 head unit
1- loud ass system with SQ to match

 

hell if its who i think it is. i cant remember his name **** i gotta run into him. he had a massive setup in his tahoo and broke windows...

 

So getting 15" in a cobalt is not an easy thing to do lol.

BTW my one 15" MA is louder than when i had 3 pioneer 10's lol

 

(2) Alpine 1242D 12'' Type R's taking 650Rms each. My system is tuned more for SQ than SPL, but it gets up there if its called for.



Also: 6.5'' Alpine Components in front w/ 6x9 3 way Alpines in rear taking 75 RMS ea

is that the MTX jackhammer? i saw that on pimp my ride haha. it weighs like 250 lbs!

 

lol the jack hammer sux

 

^^^ agree

 

-EDIT- it weighs 369 lbs haha

here are the specs:

* 6,000 RMS, 12,000 peak music power

* 23" tall

* 369 lbs.

* 900 ounce strontium ferrite magnet with extended magnetic field gap technology

* Carbon fiber and glass fiber dust cap with aluminum honeycomb center

* Expanded polypropylene cone with mica filler for reduced mass and increased stiffness

* FEA designed progressive roll spider with 10 AWG integrated tinsel leads woven in to allow for 2.5” of linear cone movement one way

* Aluminum shorting ring

* 6.5” voice coil with 17 AWG high temperature aluminum wire in a flat wound, long-excursion design incorporating 2.5” of Xmax

* Aluminum heatsink to maintain the optimum voice-coil temperature

* Replaceable cone kits available to switch between SQL & SPL models without removing the JackHammer SuperWoofer from its enclosure


why would you want that thing? lol

 

My next setup is going to be Two Kicker 15L7's in a 7 cu ft box ported and tuned to 33hz.

Not sure about the amp yet, probably either an HK802SX, or an HK4000D.



News on my current system, just last week I installed Alpine Type-R 6.5" Components up front, they sound amazing.
Also, I got a radiator fan out of a Lincoln, wired it to a switch and relay, and put it in my trunk to cool my amps. Works pretty well.

 

oh ya hack trying to be the first balt with 2 15s on the site? lol jk but honestly at the rate im going you just might be.... but have you got your amps yet? i can probably get you the hk802 if you want. I have no idea on price but i can find out

 

They have em on ebay for ~$400 shipped. I'm going to probably be parting out my system as soon as I start construction on the new box. I think it's going to be louder than all hell.

Heres some pics of my concept drawings

The subs will be facing up, to maximize airspace. They will be flush with the opening of the trunk.




Here you can see the internal layout

 

Subs
2 12" Alpine Type R

Amps
1 Alpine MRD-M1005

Boxes
BassSlammer

Car Prep
nope

Measured dB
146.8 @ windshield

Headunit
Alpine IVA-D310

 

well at least im a step ahead of you hack... i have all the equiptment i just need the box

 

not like its much better but new top score is 146.7 (just wanted to bump the thread)

 

With your RE MT?


I want to get my setup re-metered with my 2000w RMS that I have now

 

ya that was with the MT... im sorta disappointed it was only a .2db gain but once i put some time into the build (more so money) i should see it rise slowly... remember i still want to put 2 15's, an alt, and at least 2 more batteries (i have all that but the batteries)

 

Gah, I wish i had money.

I want to run Four 15's so badddd



What's the specifics on your setup? I'll add you to my new leaderboard

 

lol i have to bump this... sry guys i never noticed the leaderboard

 

maybe when im done I'll be on the there???

 

lol its very much null and void by now thou

 

Well crap, oh well. I don’t see what I do as competition but more as enjoyment for me

 

lol same here. great minds think alike

 

late post i kno but

2 10" Memphis Power Reference

1000W Massive Audio Blade Amplifier

Custom Box Built By Audio Obsessions

Dk Bout db but i know over 130

 

i might get mine tested once its installed tuesday or wednesday......

emp, what do u think my 2 rockford fosgate p2s will hit pushing 250rms each? in a sealed box

 

We've installed 2 15 in a balt already... I Prob have the loudest cleanest sounding his and sub maybe???
T1500-1bd
T600-4
2 sets of PRO60se
SL95
SPG555
Custom everything.. one day i will post pics ha