2x20 Watts
The Alpine v12 MRV-F505 amplifier puts out up to 200 watts of RMS power at 4 Ohms and using 12 volts. At 14 volts, it puts out up to 400 watts of RMS power with a bridged 4 Ohms ratio.
600 watts
how many watts does he amp have in a 2005 chevy impala
The Alpine SPS-600 6.5 x 6.75 in. Car Speaker is rated at 240 watts.
100 watts is great, 150 watts may be too loud for some, and there is higher watt amplifiers made.
50 watts is a good amplifier size for use in the house. For other applications speakers usually have a power rating.
90 watts X 4 channel output
Xenyx 802 is not a powered mixer, you need a separate amplifier with it to drive the speakers
The Alpine MRV is an amplifier that is used in car stereo's. There are many different models in the MRV line. On ebay you see prices from $50.00 for older units, on up to $1250 for current new-in-the-box models.
volts x amps = watts so 1500watts/12.8volts=117amps
The Rockford Fosgate R150-2 2-channel amp puts out 50 watts RMS per channel to your speaker system, or you can bridge it to supply 150 watts RMS to a subwoofer.
What's a subs? If you are consuming 3200 watts your amps at 120 volts will be 26.6, at 240 volts it will be 13.3. However I suspect I am missing some information.