Xtracycle bike sound system with PA speakers in Sonotubes
Channel: nixiebunny1
Date: 2011-10-14

Bike stereo. 150W/channel using Peavey drivers. Cabinets made from Sonotube with MDF ends. Pioneer GM-D9500F Class D amp. LiPo battery packs. Crossover and 50W L-pads from Parts Express. 
Speakers weigh about 25 lbs each, batteries 10 lbs for 6 hours runtime.
Built on an Xtracycle Free Radical. 
I still haven't turned it up all the way. 
See it at http://www.cathodecorner.com/loudbike/