IMHO - as long as listening to music on motorcycles works, it will also work in a M3W.

one or two UE megabooms might do the job:
if two, they link together for stereo.
and its waterproof!
http://www.ultimateears.com/en-us/uemegaboom#intro-slide

Max sound level: 90dBA
Rechargeable Lithium-Ion Battery for up to 20 hours of battery life

The smaller version UE Boom 2 (also 90dBa) might
even fit into a cup holder ...

Last edited by comet; 28/04/16 05:42 AM.
in love with life. that's it.