depends entirely on your sub setup,
what do you mean? can you explain in anymore detail? If i have 2 x 1200 infinity subs, then what else do i need and how do i go about it?
Its been the best part of 10 years since i Dabbled with stereos-
With 2 12 or 15 inch subs you need as posted above 1 Amp that runs 2 Channels --
Sadly some Cheap amps are PISh & the true power output isnt close to the one advertised-
Get a decent Amp & run the 2 Channels in the car its simple- You wont lose power -- the battery is running the Amp-- the Amp is running the Speakers-
If you want the best sounding stereo then balance it out with mid range & top end speakers otherwise you will get overwhelmed with base-
Once you get into that teritory though you would need another amp & an active crossover... Im sure things have probably changed by now-
By old Pug 205 had 6 amps & an active running- 4 tweeters, 4 mids, 2 freeways, 2 10's in the rear side panels & 2 12's in the boot-
MAKE SURE THE BOX YOU GET IS SET UP OF THE SUBS OTHERWISE THEY WILL SOUND PISH
S