Lightly used Model SV20-39CS. Purchased new from SVS 10/19/2000 for $480. This is an unpowered and uncrossed-over sub - you feed it from a sub output on a preamp or processor and use an external amplifier. I don't have the shipping materials, time, or energy to deal with shipping this so I am restriciting it for local pickup only (El Segundo, CA, just south of LAX). Thanks.