Which is better 2-ohms or 4-ohms?

Question

i'm getting my boyfriend rockford fosgate P3s for his birthday and idk which one to get. the 2-ohms or 4-ohms. he has a sony xplod and it says.

rated power output:202W x 2 (4 ohms), max. power output:1200W (2 ohms)

help please!

Answer 1

ohms=volts/amps "Extra features may also be built into a power amplifier. These features include built-in active crossovers, equalizers, signal processing and speaker level inputs. When shopping for an amplifier consider that all power ratings are not created equal. Some of the low-quality brands will exaggerate or even outright lie about the power output of their amplifiers. This is a good reason to stick with the well known manufacturers. The only true measure of an amplifier's power is its continuous power rating or R.M.S. rating. R.M.S. is an acronym for root mean square and refers to the amplifiers average power output. An even better method is the CEA 2006 standard but not all amplifiers adhere to this testing method. Basically the test is performed at 14.4 volts with a four ohm impedance load. The entire audible frequency range, 20-20kHz is tested with a distortion level of 1% T.H.D.

One thing to note is that doubling the amplifier power does not double the sound output. A doubling of system power adds only 3dB of SPL (volume) to the output. SPL works on a logarithmic scale so it takes 10dB of change for the sound to be "doubled". This works out to a little over three "doublings" of power. So if you have 100 watts of power you would need to double that 200 watts, double that to 400 watts and then double that to 800 watts. That would give you a 9dB increase. To truly get the 10dB increase you would need 1,000 watts or a ten fold increase in power.(from car audio)  My recommendation  is  p3d412 it features dual voice coil, 12" , and low profile box enclosure needs.

Answer 2

The lower the impedance, the more difficult a load a speaker is to drive, the more current it will consume, and the hotter your electronics will get. Therefore, 4 ohms will present an easier-to-drive load, and that's what you should get if you have the choice.

Answer 3

ohms is how many speakers can be ran throu that one speaker so if you don't know how many you will be running get 4 ohms just to be safe