Powerwerks PW15M Speaker Monitor at DC Music. Thank you for your interest in the Powerwerks PW15M Speaker Monitor. Powerwerks PW15M Speaker Monitor. The Powerwerks® PW15M speaker monitor is built to produce rich, robust tone and reliable performance that you can count on. Handling 100 watts RMS (200 Peak), the 15M utilizes a heavy-duty 15-inch Powerwerks P.A. speaker with a High Frequency Driver for treble frequencies. It's built using time-tested construction methods and is covered in a durable vinyl material with protective corners. May be used on the floor as a traditional monitor or stand-mounted.