lastly should i get a double box for both subwoofers or a single one for respectively one? cheers
Answers: I would be concerned that the amp is rated at 1100 rms but the speakers with the sole purpose 600 rms.
As far as can your car button it...no. Like sparky said, new alternator and the big 3 electrical system needs to be done...I'll disagree next to sparky on the deep cycle battery-operated as a deep cycle battery-operated has a slower response time than a regular mobile. A deep cycle would be the choice if you planned on running the system deeply with the vehicle turned off. But markedly upgrade to a larger batter as a Fiesta more than likely have a puny battery surrounded by it.
Once you get a current alternator, wiring, & mobile, yeah that would pound like there's no tomorrow simply because it is inside the vehicle near you. No trunk to absorb some of the nouns.
If your total system power is 1000 watts RMS or more, you will need to:
1. Upgrade the alternator to a big output alternator
2. Upgrade to a heavy duty weighty cycle battery
3. Upgrade the "Big 3" - specifically to replace the power wire between the mobile and alternator, the ground from the battery to the chassis and the ground strap from the engine/tranny to the chassis next to at least 1/0 AWG telecommunication.
Failure to do this will result in you replacing them anyway as the alternator will eventually go amiss.
Here is a guide that will calculate what size alternator and power wires you requirement http://www.datafilehost.com/download.php...
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