Troubleshooting B&W DM 302 - possible crossover issue.
I just bought a pair of B&W DM 302 bookshelf speakers at a yard sale for $4. This was a group yard sale for a school sports team fundraiser and all the stuff was donated and combined into one lot so the owner of the speakers wasn't around for me to ask questions. I figured $4 was worth a gamble.
If you're not familiar with this speaker, it's a late 1990's/early 2000's two-way bookshelf speaker with a 1" tweeter and a 5" midrange driver. That's all I know about it though.
Now that I've got the speakers home I tested them out with some music and one of them seems to work fine, but the other one only produces sound from the tweeter. I switched the L and R wires and got the same results, so I don't think it's an issue with my amp. I'm guessing this means something is wrong with the crossover circuit, maybe? Or the internal wiring to the driver between the driver and crossover?
If you had a speaker doing this, where would you start? Does anyone know how to dismantle this particular speaker to get a better look at what might be happening? I don't really know much about speaker design, and my knowledge of electronic circuits is pretty basic, but I'm willing to mess around with this since I only invested $4 in this pair of speakers. I'm thinking I should try to open the enclosure and look for anything obvious, and then maybe test some of the wires for continuity, etc. Beyond that I'm not sure.
Thank you for your thoughts!