What size Amp do i need?

[jc2412]

I have a pioneer DEH-5900ib head unit. I have a set of infinity Kappa 682.7cf in the rear, and a set of pioneer TS-A6881R in the front of my truck(below are links to all the specs). I really don't know a ton about all this stuff, so i'm really not sure what specs i need to be looking at. What size amp should i get? and do i need to to put the pioneers on an amp too, or just the Kappas? Also i don't want to spend a fortune on an amp, so do you know of any decently priced amps for what i need? Thanks.

Head unit: http://www.crutchfield.com/S-bkUPMxMcPm5/App/Product/Item/Main.aspx?g=300&i=130DEHP590&c=3&tp=5684&tab=features_and_specs

rear speakers: http://www.crutchfield.com/S-bkUPMxMcPm5/App/Product/Item/Main.aspx?g=52200&i=1086827CF&tp=92&tab=features_and_specs

front speakers: http://www.crutchfield.com/S-bkUPMxMcPm5/App/Product/Item/Main.aspx?g=52200&i=130TSA6881&tp=92&tab=features_and_specs

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[michaelsil1 10+ year member]

If space and cost are an issue the Alpine PDX 4x150 should fit your needs it will power both your front and rear speakers.

 

[mile098 10+ year member]

u dont need the rear system..at all...just a good front and possibly a sub in the back...sell both the front and rear system add some money ans get a good 2way passive front system+a small amp for it..for starters and the see if u want more..athought i think its more a matter of when