why isnt my system hitting hard

[schackel 10+ year member]

this man needs a funky pup upgrade

 

[KyleBechtold 5,000+ posts]

both subs are hooked up to one amp and then the second amp is hooked up to the other amp with a yrca and i forgot that they are at one ohm right now. the subs are dual 4s.

try hooking one to one... each sub on its own amp.. the pre-amp outputs to send signal from the first to the second amp

 

[nej89 10+ year member]

is there a formula everyone uses to set the gain on there amps? and if so what is it so i can figure out how to set them so im not clipping my subs.

 

[fasfocus00 5,000+ posts]

is there a formula everyone uses to set the gain on there amps? and if so what is it so i can figure out how to set them so im not clipping my subs.

the formula is called an osciloscope

 

[BeAlLsTaR13 10+ year member]

is there a formula everyone uses to set the gain on there amps? and if so what is it so i can figure out how to set them so im not clipping my subs.

use an o-scope.. odds are you prolly dont have one

you can use a DMM as well... but o-scope is the best possible way

 

[nej89 10+ year member]

where do u get an o-scope from? and where can i get a reliable db reader from?

 

[ARSkemp 10+ year member]

I dont know if i missed it, but how did you get your car metered? Was it at a shop with an audiocontrol or termlab meter? Or was it one of those little handheld meters. If it was a handheld meter then most of those only read up to 125ish dbs max, and aren't very accurate at all...

 

[nej89 10+ year member]

ok so today i used a term lab to meter my car and hit a 140.7 which isnt too bad for 2 12's. last time i used a boom stick to meter it. but now all my gains are set right and still tweeking the hz setting on my amps. tomorrow i am doing the big 3 and would like to see if that does anything different.

 

[azimuth 5,000+ posts]

ok so today i used a term lab to meter my car and hit a 140.7 which isnt too bad for 2 12's. last time i used a boom stick to meter it. but now all my gains are set right and still tweeking the hz setting on my amps. tomorrow i am doing the big 3 and would like to see if that does anything different.

you should be way over 140.7 with 2 of those. 1 of those could do over that in a daily driver enclosure. i did a box for 2 mtx 8500 12's in the trunk of a nissan, and they hit 149 on a TL, at the dash, playing music. you're losing a ton of output somewhere. probably a combination of power, enclosure and install.

 

[Boomin_tahoe 5,000+ posts]

you should be way over 140.7 with 2 of those. 1 of those could do over that in a daily driver enclosure. i did a box for 2 mtx 8500 12's in the trunk of a nissan, and they hit 149 on a TL, at the dash, playing music. you're losing a ton of output somewhere. probably a combination of power, enclosure and install.

How many watts were you sending to those 8500's?? Box size??

 

[nej89 10+ year member]

yea the reason that my 9500's are at that is because the box is a little to small and the port is tuned to 47hz which is way to high

 

[lovindabass]

try a line driver as well. That would greatly help the issue you have with the head unit not giving the signal enough juice!

 

[amartin_72]

Those 9500s should like the 47hz for spl, but it shouldnt sound good as you said before it sounds good.

 

[azimuth 5,000+ posts]

How many watts were you sending to those 8500's?? Box size??

3.8 @ 38hz. it wasn't my system. i built the box for a local guy. i believe he was running a kicker zx1500.

 

[on1wheel01 10+ year member]

Where are the pics. That would help ppl get a better idea. And maybe go back to the shop and get details of the box, make sure thats the tuning they did it at. If so slap them hard.