Hi i'm very new to car audio, and am not sure about choosing the right multi channel amp.
I have:
-2 front alpine speaker: rms 75 watts 4 ohms
-2 back alpine speakers: rms 80 watts 4 ohms
- a kicker 12": rms 150 watts 4ohms
To run them all how many channels will i need and how many watts per channel etc.. pretty much what are the specs i am looking for in an amp. help??
most 4 channel amps will be rated at their rms power into their minimum ohm load which is almost always 2 ohms. that being said you will probably be looking for a 600 watt 4 channel, which will give you the 75 watts per channel you crave.
you have two options for running the sub woofer, you can buy a separate amp the will be rated also at 600 watts except it will be rated at 1 ohm. the other option is to run all four of your speakers on the first two channels of whatever 4 channel amp you choose and run the sub woofer bridged on the rear two channels. option two will stop you from being able to fade the speakers from front to back, you will only have left and right but it will save you the money of using a second amp.
there are also five channel amps which are designed to run a whole system including the sub woofer.
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thats probably too much power on that sub woofer. maybe if it was a better built sub it would handle the extra power but i know kickers tend to self destruct when you over power them by too much. even still, it may take the power if you are careful with setting the amp and knowing when the sub cant handle the sound you are trying to make it produce.
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Can you provide the model number of the Kicker subwoofer?
Also what type of box is the sub in? Sealed/ported How big?
If the sub is in a small sealed box it should do just fine with that much power as long as you set the gain on the amplifier correctly. If it is in a ported box then I would be agreeing with soundnsecurity that you are taking a greater risk but it still should be ok as long as you set the gains correctly and lower them if you observe bottoming out or too much excursion(how far the cone of the sub actually moves). i have overpowered speakers in almost all of my installs and I simply turn the gain down if the speakers are obviously getting too much power.
Rean this to learn how to set your gains: https://www.the12volt.com/installbay/forum_posts.asp~TID~85479~PN~1
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Dodge Magnum in progress:
Pioneer DEH-80PRS - PPI Amps - Dayton Subwoofer(s) - Exodus Anarchy's - Vifa Tweeters - Kinetik Battery