Loud speakers

ADC_3

I need some speakers to attach to my laptop to make my training presentations come to life. What's the biggest yet still portable speakers I can get that will fill a room and deliver quality sound.

Beep

StrikeEagle

Creative Labs TravelSound are reasonable, but require 4xAAA batteries per 35 hours of usage. Batteries not included.

Woby_Tide

I thought this topic was going to be about the Reverend Iain Paisley