Join Date: Aug 2011
Year/Make/Model: 2014 Kawasaki Vulcan Vaquero ABS SE
Color: Orange SE
Lots of folks do this! If you use marine grade speakers you shouldn't have an issue. Just be aware that the 900 has a very limited charging system. Too much power in your amp/receiver equipment and you'll find yourself with dim headlights and dead batteries.
Personally, I'd go with an efficient amp with a line-in connection and just use an iPod or something like that for your audio source, eliminating the extra amperage of a receiver. Kicker makes a 50Wx4 RMS amp that is designed for motorcycles, it's really small and it's waterproof. Also pretty efficient and may be okay with the amount of juice you have in the charging system.
"8 But God demonstrates his own love for us in this: While we were still sinners, Christ died for us."
Romans 5:8 (NIV)
2014 Kawasaki Vulcan 1700 Vaquero ABS SE
iPod Connector Kit, Kuryakyn Highway Pegs, Mustang Touring Seat, Marvella's Hitch, Kuryakyn Trailer Wiring Kit, Haul-Master Tag-a-Long Cargo Trailer
2011 Honda Shadow Aero 750 (Wife's)
Memphis shades quick-release windshield, OEM Solo Seat, Mustang Fender Bib, Chrome Solo Luggage Rack
Past: 2006 Vulcan 900 Classic LT