You must first check with the guide to your subwoofer. Either you can probably find it online , but you need to know the RMS wattage for the subwoofer. Than buy an amp that can put out the same number of watts and the RMS is for the subwoofer.
A passive subwoofer doesn't have a built-in amp and will require the use of an amp.
your car should not stall after installing a subwoofer. your problem might be the fact that your amp and your subwoofer(s) could be using too much of your cars electricity.
in fact , some subwoofer with amp. you don't need buy amp. give you one good guide http://www.12vcity.com
Yes, you can use a 500W subwoofer with a 1000W amp. Just be cautious not to crank up the volume too high to avoid damaging the subwoofer. Make sure to properly set the gain levels on the amp to match the subwoofer's power handling capabilities.
Wire the subwoofer to and AMP and the amp has to be directly hooked up to your battery. There is a second wire that is hooked up to a wire that only has power when the keys are turned. This turns the Amp on by turning on a relay in the amp powering the sub. And connect the ground to something steel in the car.
All car speakers will go well with a 500 Watt amp, but for the best effect, get a power subwoofer.
Take the rcas from the amp and connect it to the + and - posts on one of your speakers.
There isn't one
Depends on how much juice the sub uses ,but almost always the answer is yes especially if you want a sub that kicks at all.You'll need an amp if your subwoofer costs anywhere over about 50 USD. Otherwise the subwoofer is probably junk and you shouldn't waste your money on it anyway.
The amp is right next to the subwoofer. They are both located behind the rear driver side panel.
You can get an 18" Pyle subwoofer but you will also need a large amp for it.
It depends on the power rating of the subwoofer.