Yes get a amp for them, they are actually quieter then the stock speakers but they sound so much better louder. Im looking for a cheap 4 channel amp right now to bump up the sound.

 

Polk Audio db570s work great for me. I have had mine for about a year and a half and still love them.

I used to have Sony Xplode speakers. I didn't really care for them and actually gave them away to someone on here.

 

I have a stock head unit from an F-150 and it works just fine with my aftermarket speakers with no amp. This head unit was never offered in Rangers though, so I'm not sure how it compares to them as far as power output and such.

 

It should be the same power output, if not it's not anything high quality to be using instead of an actual amplifier.

 

I am into speaker quality and am running a set of MBQuart 6.5" components amplified at 100rms per speaker, you can't get near that with a stock head unit. I know it is expensive and most people don't want to deal with it that much, but I do recommend using an amplifier if you are using the stock head unit, it will allow you to play aftermarket speakers louder and definately of more quality sound.

 

Mine are loud enough already for me to not be able to hear my cell phone, not be able to hear sirens, and just really not be able to hear much of anything outside the truck. I guess when my hearing gets worse, I'll look into an amp... I can see the argument for sound quality though.

 

I just put in some Memphis 80 watters in the doors. Wow they sound great. I think I paid around 80 dollars for the two speakers. I was just gonna pick up some pioneers for the back but I'm telling ya you wont regret gettting memphis if you can find them. I will be putting them behind the seat as well. :)