Moreover, this amp would be good for my sub? or is it the power it? JL IVE heard in the rates of their controls, and W7 is estimated 1000WRMS when the amplifier is about 1300WRMS to 3 ohms.

if your battery keeps discharging, then get a bigger alternator (and the battery, or just a bigger battery for that matter). capacitors are a gadget hard you fly. If the amplifier is connected directly to your battery with the cable correctly, it can provide at least 100 amps on demand. can you start your car with a capacitor 1.5f, so you can with a battery, so how is the ability to give you something you already have. while a capacitor is a series of temporary storage, but you have a battery thats way bigger and more powerful than the CAP, totally useless.as far as the amp will give more attention to the RMS rating of the amp and speakers. rating of the amplifier must be more than the speaker, you will not overwhelm the speaker unless the amp is up high, then just lower the gain. Most speakers are fried by too small of an amp to be turned up and distort trade, and the distortion kills speakers. a great Amp doesn't need as much volume giving you the energy to clean your contact. Of course, if you turn the Amp so big up there will kill your speakers too.

im kinda on a budget would that sound nice???