What Amplifier Should I Get With 2 Pioneer 12-in 1300 W Subwoofer

Can I use a subwoofer without amplifiers in a car?

You will always need an amplifier to run the transducer. The amount of amplification you may need will depend on what you pretend to do.Think of it this way. A loudspeaker power capacity is its capacity to handle power. Loudspeaker drivers are not self-sufficient and they have no power, they can handle power up to a certain limit.A 1000W woofer will work from 0W to 1000W, depending on its sensitivity. You should be able to have the loudspeaker “work” with 1W. So connecting it to your head unit directly would make it “work”. Would you be able to get good results? Probably not. Usually, the subwoofer needs twice the power you are feeding to the rest of the speakers in order to get “acceptable” results or be effective enough for you to notice it is there.Also, the woofer would need to be connected to a mono channel, if you connect it to either the left or the right channel of your head unit, you may not get all the information depending on how the recording/mixing was made, and you do not have an amplified sub out mono channel on the head unit. So, the result will be poor.But you have to consider that even your head unit has amplification inside (almost all do, some are only preamplifiers and will need external amplification for all speakers). Your car speakers would not work otherwise.So, without any amplifier at all, not even the one from the head unit, you can have the sub in the car, but it will be as useless as would be all the other speakers in the car without one. Unless you are an inventive person and manage to find a different use for your loudspeakerBut you have plenty of options on the market that “do not need” a separate amplifier. Just look for an active subwoofer, that is a subwoofer with an enclosed amplifier, one that does not need a separate one. You can find those in all sorts of shapes and with different specs. Just chose one that fits your needs.

How do you hook up car subwoofers without an amplifier?

Dude, you don’t. The subwoofers usually have 10″ cones and massive magnets to get all the surface area moving. You need some serious power to drive that and you will need at least 1,000 watts of power to drive your system and perhaps even multiple amplifiers with crossovers to optimize the sound.

If I have two 400 watt RMS subwoofers what size amp do I need? How can you tell?

Probably 800 watts at half the rated ohms of one speaker. Your amp must be able to push 800 watts at, say, 2 ohms if these are 4 ohm speakers or 800 watts at 4 ohms if these are 8 ohm speakers.It will say on the speakers what the impedance in ohms is.Get an amp that is specified with 800 watts or over, at an ohm rating that is SAME or UNDER…half the ohm rating of one of those speakers.That's the answer here's a short ramble:Almost inevitably you will be running the two speakers in parallel. Whether you have two outputs on your power amplifier; or if you go into one speaker then go out from that speaker to the next; the connection you don't see inside the speaker with in and out or inside the amp is a parallel connection. Parallel connections divide the impedance (ohms.) It takes a bigger amp to handle lower impedance, because lower impedance is lower AC resistance. Lower resistance means more amps flowing for the same output voltage. More amps requires a beefier output section. The actual equation for total speaker ohms of speakers wired in parallel is:Total ohms = 1/((1/ohms#1)+(1/ohms#2))…If you put in a third speaker there would be another similar term in the denominator, (1/ohms of speaker #3). More speakers, lower ohms…The amp will say what the watts and ohms are on the back, or at least in the manual it will tell you what it can handle. Be at or below the ohms, and above the watts.