Hey everyone! Alright, I am setting up my first system here. I am pretty confident in everything, except my amplifier. Here is what I have:

JL A4300 Four-Channel Amplifer
Infinity Kappa 693.9I, 6x9, 3-way speakers
Infinity Kappa 50.9cs, 5-1/4 speakers

I have three questions:

1. My amplifier runs at 4 x 70W RMS @ 4 ohms, and 4 x 110W RMS @ 2 ohms. If it's bridged it runs at 2 x 140W RMS @ 8 ohms, and 2 x 220W RMS @ 4 ohms. Both my speakers are designed to run at 2 ohms. My 693.9I has a power range of 2-110 watts RMS (330 watts peak power), while my 50.9cs have a power range of 2-85 watts RMS (225 watts peak power). Will my amplifier be powerful enough to run these speakers at a loud, but high quality rate?

2. If the speakers are designed to be run at 2 ohms, will they run at 4? If so, how do you go about setting all that up? Does the amplifier just recognize what it should run at?

3. Do 2 ohm speakers sound just as good as 4 ohm ones do?

Thank you!