Is it possible to get 150 decibels out of two 12 inch es124 Kickers Subs ran by a Coustic 400watt rms amp, if I have the right size box?

nope unless yours using a nokia phone as the meter, it normalling takes about 1-2000rms to hit the 150 mark with a good box

In a hatch, with a good box and testing, 140+ should be possible.

Phil

Short answer: No

Question: Do you need 150dB?

Another question on top of chargers is, have you heard 150db before? Trust me its F*&^&#ing loud, and is probably 3-4 times louder then you think it is

I just want boot install that is going to be competitive, and something that still looks pretty good at the same time.

to put it simply, you need more power to be competitive.

However, as Phil said, you can get pretty bloody loud with a decent amount of thought and engineering. So dont dispair.

not until you see your car get metered anyway...

This is my current install, mainly due to the fact that i had to have room to put a pram in the boot:

I plan to have the subs both is a proper inclosure and mount the amps on either side of the boot. Not sure what direction to have the subs pointing, Front or back? I want to have it so the box can be taken out of the car to access the spare wheel.

Subs facing back, unless you can have them firing into the cabin, sealed off from the boot.

spl and looking good dont normally go together, but if them subs are daul coils, whack another 2 amps on them.

at local comps 140+ should be competitive

have you?

ah yeah he has trism and his heard a 160dB before to LOL

Good stuff, never surrender all of your SPL.

It's pretty obvious you've never heard a 150dB car before dude. I think if you had an idea of what 150dB means you wouldn't ask the question

Never the less, you have some good starting gear there so by all means go ahead and put the time into making a good enclosure. Hitting 140dB would be a good effort for you and I'm sure you'd be happy once you heard it And that is what its all about! Forget the numbers, they LIE!!!
Plus, those sort of numbers are enough to have some fun at local comps.
Maybe attend a couple before hand and re assess your goals...

Sure have buddy As billy said ive heard 160db before

I'd rather have 140 at 40Hz than 150 at 60Hz any day.

That is of course, if you like music. If you only want to enjoy 2 second burps outside the car, then you might go the other way.

Phil

I'd rather 150 at 40Hz haha

Obviously.

Phil

Thanks for the reply's people, I think had my ambitions b4 my capabilities . I would be happy with around the 140 mark.

I'd rather 150 at 20Hz

now now charger thats being silly 25Hz

Meh we already did it at 25Hz, gotta raise the bar some time

I'm with charger on this one... the lower the better!!! Tony's van tought this lesson well...

Having said that, 20hz is basically just wind...

20Hz is boring.

Phil

PS: I did my 20Hz thing 17 years ago. Look up "The Planet Krypton"

Superman?

Yes, a track from the soundtrack. 23Hz pipe organ.

Phil