I purchased a B210 recently from e-bay. No problems -- Excellent condition, but I made a mistake of not looking at the ohm rating. It is a 4 ohm cab and I needed an 8 ohm as an extension to my Eden CXC combo. I suppose I can only convert this cab to a 16 ohm (wired in series) I assume this cab has 2 8 ohm drivers. Is there a way to make this into an 8 ohm. I do have a GK 200MB combo that needs an external 4 ohm load to utilize its 200 watt rating.