So anyone got any tips on tuning my amp its a JBL GTO7001

 

turn it to the Hz you set ur head units HPF to then play with the volume till your happy

 

Why don't you post the info on your system, like what subs your running and what the RMS on them are, what kind of box there in, what HU your running so we can help you a bit better.
Untill recently I had 2 of the JBL 600.1's there great little amps you should be happy with them

 

LPF ~80
subsonic ~20 if you have a ported box. lower if u have sealed
bass boost always at 0 regardless
gain depends on the HU but NEVER above 3/4... few need even that so beware

 

K well i have 2 12"inch jl w1s in a sealed box with a pioneer head unit and the jbl gto700.1 amp my head unit is at 80hz