Do you need an amp to run alpine type S or R speakers Options

[rasta]

Hi guys, im planning on buying 2 x Alpine speakers 6.5" and buying a sony DAB 52w RMS head unit.

Now I have heard that Type R speakers may require an amp to get the maximum quality sound and loudness. Is this true?

What about type S speakers? Is it not required to use an amp as its less power?

Type R

http://www.caraudiocentre.co.uk/product_m-...17s_p-22579.htm

Power Specification
Peak Power: 330W
RMS Power: 110W
Frequency Response: 65Hz - 27kHz
Sensitivity: 87dB, 1W/1m
Installation Diameter: 136mm
Depth: 59mm



Type S
http://www.caraudiocentre.co.uk/product_m-...71a_p-20255.htm

6-1/2"(16.5cm DIN) Component 2-Way Speaker
Peak Power 250W
RMS Power 50W
Frequency Response: 35Hz - 30kHz
Spoke Design Grill System
Multi Layered Cone
Wave Guide
Linear Drive Magnet
1" soft Dome Tweeter With Installation Kit
External Crossover With Tweeter Protection
Lightweight Air-Injected Rubber Edge
Neodymium Tweeter Magnet
Custom Fit Spacer
Nomex Spider

[pepsiman]

I ran type s 2 ways off my head unit and they were fine, and my pioneer componets are goin ok off the head unit, they both are rated about 50 watts rms i think...but of course a amp always helps. I think they mine are rated like 2-50 watts rms or something like that, just dont turn it up to where u get distortion and you should be fine.
btw crutchfield's knowledge base is a excellent resource for any questions like this, im on there alot when shopping for car audio stuff.