hey if you want i could give u the specs of my box for the single mt... but your trunk is gone. shoot i would amost give you the box but i might use it again once (for a total of 2 days playing time ) and i dont want to ship it

i want pics

 

of what.. the meter? or the system?

 

The 10s were from 120 to 400, with the 15s at 150 and below. Tuned em with the EQ so where they overlapped they were under graduated output. Took a while tuning but I wonted a smooth cross over.

 

15's played up to 150hz? wow i was going to do (with overlap but ill figure that out once i start tuning)
15s ~80, 8s 80-300, 6.5 300-4k, 25mm 4k+

 

emperor JJ what did you want pics of?

 

i wanted pics of the sytem but if u know the name of the meter it would be good

 

I have pics on the first page of this thread check it

 

oh shoot guess i missed it... how do you like the sound? herd those diamonds are very sq woofers

 

thye are.. you get what you pay for... THey hit HARD and CLEAN

 

Sub
Stock 10 Inch Pioneer(in stock enclouser)
2 12" Kicker Comps(in some generic box)

Amp
Stock Pioneer
PYLE 1800 watt(for now till i get something better)

 

The 15s I was using were good up to 200hz. However, with the tunning, at 150hz they were hitting at something like -36db.

*Edit*

Just a quick note. I wouldn't suggest trying this with modern day subwoofers. The design has changed a lot, with a great many having trouble producing sound over 60~90hz.

 

ya i wasnt planning on it... i decided to go with RE XXX over FI Q and ive herd that output higher then 80hz sux but thats why my 8"s have a fs of 40hz

 

Your box size will also effect that. Remember the Iron Law. Deep Bass, Small Enclosure, Power Efficient: take any two.

 

right thats why im glad the cobalt has big doors

 

curious... I just installed a new system in my new 2007 cobalt, infact it hasent even been 24 hours scince i got the car, i picked it up yesterday at 4, anyways where can you get it meetered?

My system

Subs

2 12" Infinity Dual Voice Coil 1252w peak

Amp

Rockford Fosgate P1000-1bd

Wire

4 Guage Rockford Fosgate Amp install kit

Rockford Fosgate 1 farad Digital Read Cap

I-pod interface cable

Head Unit

Kenwood KDC-MP435U

Boxes

2 12" Q-logic Tuned Bandpass Dual ported/enclosure



Thats my system, any guesses as to how loud it is?

 

your probably only lookin at 120-130db... thats my guess.. actually that sounds about right

 

What Harness did you use?!?!?!?!


Sean

 

look to see if any local stereo shops have the term lab sensor

 

I had to make one, the only one i could find was directly ordered from scoche but it was the onstar one and it was $170

Thank you

 

Ive hit steady in the 150's (termlab mic) and hes right about it making you sick. Just a little nauseated and hard to breath is what it will do. Thats in the low 150's but when you get any higher than that you do not want to be in the car for it will make you through up.
I am working on a new project for my cobalt and i like to see what it does. but once i put my CF trunk on i will not get to do anything anymore with that kind of pressure and vibes it will crack the the fiberglass.

You create a new atmosphere at that high of db. Will never happen.

Good score

 

thanks im working to hopefully up it some more (im satisfied with that for just throwing the box sub and amp in there and running without any fine tuning

 

you will get there you have to keep playing with it

 

ya im going to mess around with it a lil more but ultimatly im going to scrap what i currently have and change it to a more sq build with 2 15" 05 XXX tuned low. But im going to try and do removable ports so i can tune higher for a few spl shows

honestly what do you think would be louder?
3500w on a single 15 MT
or 3500w on a pair of 05 15" XXX

 

Thats easy man, with the same power and speaker efficiency, two subs will always be louder then one. Remember, x32 as much power to move one speaker up 10db, but by adding a second speaker you only need about x2 power.

 

ya but im pretty sure the mt has a higher efficency since it is of course a spl woofer. and i was also concerned about the port tuning (like i said i want it interchangeable but im not sure if i can do so with areo ports without any screw holes for mounting)