Audio Systems: amps, wattage, amps

Question
how do i bridge a 4way amp to make it a 2 way amp  

Answer
Hi Armando,
Some amps are brigable, other are not. if yours is then it will show on the side of the case above the speaker connections like so

_____
+     -
+ - + -
0 0 0 0 (=speaker screws)

Connect the single speaker to the two outside connections and LEAVE to two centre ones.
If it is NOT shown as such then it may not be possible.
Remember, the speaker needs to be about 50% higher wattage value than the BRIDGED output of the amp!
ie, 2 x 125w or 1 x 250w output needs speakers 2 x 185w or 1 x 375w
Peter