amplifier advice Options

[99Celica]

I'm getting boston sx60's component speakers put in my car and i'm searching for the right amp for them. They are rated at 65 W RMS.

I've been looking at the Alpine F300 and the Alpine KTP-445

http://www.crutchfield.com/p_500MRPF300/Al...tures_and_specs

http://www.crutchfield.com/p_500KTP445/Alp...ack.html?tp=115

Will these do a good job pushing my front and rear speakers? I don't blast my music ever, i'm going for crystal clear sound. Also will a 65+ RMS amp make a considerable sound quality difference over these 45 and 50 RMS amps or just allow me to make ears bleed?

Any alternatives if these won't do?

Travis

[quick_5hifter]

Yes you will notice a difference between a 45w and a 70w amplifier. It is recommended that you use an amplifier that can provide more power than the speakers can handle (not too much, just a little, 70w should do just fine).
The explanation is pretty simple:
You will always find two numbers specified for the power of the speakers - the RMS power and the PEAK power. The speakers are made to work in optimum condition if you supply their RMS power, but they can handle powers up to the PEAK power specified (in your case, 130-200 w max.). The speakers will not burn if you amplify them with more RMS power than specified for them (but less than their peak).
On the other hand, the amplifier's power is only expressed in RMS watts, that is the maximum power it can supply. If you exceed this power by connecting a more powerful speaker, the terminals (I don't know their exact name) will be forced to supply more power than they can handle, resulting in overheating and eventually burning the amplifier. Of course, you would notice the big power differences by hearing distortion at higher volume levels...

From my point of view, "trusted" brands are:
-Harmann Kardon (JBL, Infinity)
-Pioneer
-Alpine
-Blaupunkt
-Ground Zero Audio
-Maxxsonics (Hifonics, Crunch, MB Quart)
-JL Audio
-MTX
-Rockford Fosgate etc.

I've tested most of these brands and I've chosen Ground Zero. They are just fine, no matter what you're looking for (SQ, SPL or daily use) and they are pretty cheap.