On stock electrical, a Sundown Zv2 15" and a Crescendo 3KWP I do 144@40hz at 10.7volts. It's hard to get an exact number of what you're going to get, I'm 6db away from 150 and I only have 1 subwoofer vs the 6-8 you're wanting to get you just need to do your research some more and get exactly what you want.
References: BigSix,
This industry is about innovation and setting your own path

im nearly done with researching . i thought id get some re evaluatad advice .
1 15 and 1500 watts is what i was told 1st time round. while now i have went with 2 12s to test and learn with i probably could just drop 2 more 12s in the box i did the 139.x in on a good 1500+ and break the 140 mark with ease . while doing a 150 db burp only and daily are completely different. my walmart stuff should do 140+ it no biggy anyhow . while its still in the making everyone is talking as im just reaching for a 150 db 1st try no . Im tryng go louder each time .
last was 2 12s 139.x db on say maybe 900 watts (amp benched @)
vs my now 4 12s on maybe 500 watts breaking 140 db mark is what im hoping . so say i pullout a 141db on 500 watts well i still can double that to 1000. say i do a 143 on 1k watts i can double that also any thing over 1500 watts is going to be for burp only.Then its rebuild time after i reached my limits which i was posting this thread for
.i have different options my walmart stuff should be the least of concerns .I am planning on being on some good electrical .
3k and 10.7 volts you would gain more just from upgrading you electrical which im sure you knew . at 10.7 volts im wondering if you doing anywhere near 3k which im doubting .
.cool for 1 15 if you as me bad for 3k and 10.7 volts .
CAR STEREO INTALLATIONS Enclosures
Custom car modifications
DoesDad disliked this post
lilboom disliked this post
I'm going for 150 out the trunk :0
09 Cobalt LT
Headunit -Alpine CDA-9887
Front Stage - PHD FB 6.1 PRO SIX M/B, FB 5.1 m/b, FB 1.1b tweets
Highs amp -Pheonix Gold Xenon 100.4 & 200.4
Sub stage - 2 DC XL D4 12s
Sub amp - DC 5.0K
Electrical - Singer 270 alt, big 3 0/1 & 12g ofc audio technix, 1 C&D 400mr
Deadener - 80 mill Audiotechnix deadener
"Trunk hit hard like Kimbo Slice"
TEAM DC AUDIO
i'm going for 165 out the trunk with 6 pyle blue waves on 3k
2007 Chevy Impala LT
HU: Clarion CZ500 Front Speakers: CDT HD6.1
Sub: 12" Hispl Custom Shocker Extreme Box: 1.9 cubes net tuned to 32hz Amp: Sub: EarthQuake 2k @2ohm / Front Stage: Zapco 350
Sold To: Spooney x1 , Bgfx x1, garychoffmann x1 Bought From: ssteele18 x 1 , Louisiana_CRX x1 , mylows x3 , Spooney x4 , Bettr n' Revrse x1 , draginx x1 , CerwinVega_Fan x1 , infamous_e46 x2 , mclerico83 x1 , argent_audio x1 , Whitedragon551 x1 , Vertex Audio x3, Buck "box designs" x2 , RAM_Designs "box design" Traded With: infamous_e46 x1 , Spooney x4 "repair of amp x2"
subzero disliked this post
lilboom disliked this post

every setup has its limits i asked if anyone had ant suggestions or say on the matter not dose walmarts stuf **** or is it im possible .
150+ in the trunk just a challenge and more fun.
as was the original goal . yet i was just kicking around the idea of 8 12s in a half wall and making my car a sound /bass machine somthinh like a mini van type thing how thers a bunch of subs in it .
CAR STEREO INTALLATIONS Enclosures
Custom car modifications
DoesDad disliked this post
13 Dodge Dart Rallye 1.4T
DD 2515 Supercharged
RF T1500bdcp
Audiotechnix wire and deadening
http://mobileaudioforum.com/forum/forum.php
BOYCOTT SKAR AUDIO! SHADY BUSINESS PRACTICES SHOULD NEVER BE ENCOURAGED!

tl:dr . what that
CAR STEREO INTALLATIONS Enclosures
Custom car modifications
DoesDad disliked this post
This thread makes me smh ...sell all that garbage and get 2 subs in the right box and throw some real power to them

To throw power requires power .
a nice amp and electrical upgrade should do nice really im liking how much less power im using
also all subs dont like power being thrown at then so what typ of subs you have in mind .
CAR STEREO INTALLATIONS Enclosures
Custom car modifications
DoesDad disliked this post
please do us all a favor and just goto best buy and ask them how to hit 150 out the trunk and have them set it up for you
2007 Chevy Impala LT
HU: Clarion CZ500 Front Speakers: CDT HD6.1
Sub: 12" Hispl Custom Shocker Extreme Box: 1.9 cubes net tuned to 32hz Amp: Sub: EarthQuake 2k @2ohm / Front Stage: Zapco 350
Sold To: Spooney x1 , Bgfx x1, garychoffmann x1 Bought From: ssteele18 x 1 , Louisiana_CRX x1 , mylows x3 , Spooney x4 , Bettr n' Revrse x1 , draginx x1 , CerwinVega_Fan x1 , infamous_e46 x2 , mclerico83 x1 , argent_audio x1 , Whitedragon551 x1 , Vertex Audio x3, Buck "box designs" x2 , RAM_Designs "box design" Traded With: infamous_e46 x1 , Spooney x4 "repair of amp x2"
Bookmarks