hi room, i need help making a decision on a amp for my JBL'S 15 GTI the one's that has the 1000 on the dust cap. well i wanted to get a AUTOTEK 1900 which will go 1500 rms to 2 ohms since the subs are 4 ohms. or get a jbl 1200. your help will be real welcome....... oh i'll go with a vented...