-- Posted by Seanee at 9:24 am on June 28, 2009 Reckon this will be powerful for outdoors? 1 X Stage Line Pro Power 400w 2 channel amp 2 X Stage Line 300w speakers (45-18000Hz 8 OHM) -- Posted by Chava at 9:26 am on June 28, 2009 I bet it will. You might have max the speaker volume though. -- Posted by titan79 at 9:40 am on June 28, 2009 i guess so. keep in mind it also depends on how big of a space outdoors and party size. for a grad party thats ok. back at home when i was doing proms and shit we had 2 1000w subs, and 2 600w speakers. they were powered though so no amp.