Light, small, loud, powered speaker - Help

I have been searching endlessly for speakers to fit the following need, I hope you can help!

-Loud enough for a room of 50 people
-No or little noise distortion when the volume is turned up
-Powered to run a push button mike (phantom power?)
-Clear and crisp audio for an interview type setting
-Portable and under 10 pounds
-Portable and smallish in dimension
-Hopefully with detachable wires so speakers can be replaced or used seperately (if a pair)
-Will consider inputs of all types: 1/8, 1/4, XLR, rca, usb etc.

Thanks!