Elevick and Brewed are mostly correct but there are some older TVs (by older I mean pre-flat panel) w speaker outs. My Tera has a real honest to goodness 10 wpc amp w speaker cables outputs and pre-amp level outputs as well. My Loewe Planus has a proprietary connector for speaker output. The Tera is good enough that if you had some single-drivers or 90 dB monitors, they would work fine for TV (not HT).
