This post comes from the Ghetto Blast Sound System crew members Kerry Campbell and Michael Caffrey. Kerry and Michael also make up the core of our GRL Ottawa group. Ghetto Blast has developed a mobile off-the-grid sound system that they use for free parties in the woods and urban sound interventions. In June we sent Ghetto Blast down to Subtle Technologies, a conference and festival centered on the cross section of art and technology, as the theme for this years edition was sustainability.