I'm looking to trade a Diamond CM310D4 (for anybody that doesn't know it's a 10" dual 4 ohm sub). I'm looking to trade for a 10" sub that is somewhere between 500-700watts rms and is either dual 4 or dual 2 ohms. I'll be using a JBL bp600.1. The CM3 was powered by a JBL bp300.1. It's been used for about 8 months but is in great working condition. Cosmetically 8/10. I don't really know what 10"er i'm looking for but lets see any offers...If all else fails it's for sale for $45 plus shipping (bout $8). If you were wondering I'm looking to trade up so i will be offering cash on top of the sub.