Expert: Cleggsan - 11/28/2009

Question
"i have a question about what amp i should get... i have infinity kappa 693.9i
6x9 and heres all its details



* Sensitivity: 96 dB

* RMS Power Range : 110 Watts

* Peak Power Handling: 330 Watts

* Impedance: Dual 2 Ohm

* Frequency response: 35-30000 Hz

* Design: 3 Way

* Woofer Composition: Woven-glass fiber

* Tweeter Composition: MMD





i also have infinity 6020cs and heres it details



component speaker system includes 2 woofers, 2 tweeters, and 2 crossovers

6-1/2" Plus One+ Injection-Molded Polypropylene (IMPP) woofer with hi-roll
rubber surround

1" edge-driven textile dome tweeter

Starfish™ mounting brackets for easier tweeter installation in factory locations

2-way external crossover network (18 dB/octave, 3,500 Hz high- and low-pass)

2-ohm impedance for extra power (compatible with all factory or aftermarket car
stereos)

tweeter adjustment circuits (0, -3 dB)

power range: 2-90 watts RMS (270 watts peak power)

frequency response: 53-21,000 Hz

sensitivity: 93 dB

top-mount depth: 2





and my questiion is what size 4 channel amp do i need to power them?"


Answer
I don't make equipment recommendations because there are so many subjective factors involved.  In the case of loudspeakers the cabinet design, the acoustic space they are to be associated with and their orientation are all so important.

These two speakers you mentioned are quite high in sensitivity and will not need so much power as some of the low sensitivity models.

You can put any high powered amp on them and as long as you keep the power level below their breaking point you will do just fine.  Make sure you have the impedance matched properly between the amp output and the speaker attached to it.

You will need a good subwoofer with these speakers in order to get the really lowest frequency response.

Hope this helps.