crimping tool

I'm trying to hook up a Kicker SX500.2 to my subs, but I don't have the right tool for crimping a large power wire. Pliars don't really work very well. I went to Sears, but they don't carry anything for that. I could use a vise, but surely there's a tool specifically for crimping large cables. Where can I get one?

Radio shack carries a crimping tool for big crimps, or you can try any stores that sells electrical components.

Radio Shack just had some cheap tools for crimping coax cable. I tried it anyway, but it doesn't work. I warped the tool from squeezing it so hard.

Hit up a wire contractor depot. They might have it and or Lowes or Home Depot