If some of the drivers in the cabinet aren't working you could likely have a crossover problem. The capacitors on the crossover are very large and have to bent inwards in order to fit in the cabinet. In my M80's the soldering was broken and so the tweeters weren't working in 1 of them.
To check them, remove the plate where the speaker terminals are, pull it straight out and you'll see how the crossover is built on to that plate. Very lightly try to wiggle the capicators (big brown things)... if they wiggle a bunch then the soldering is broken. You'll need a new crossover or resolder them yourself like I did.
Don't be afraid to open up your speakers... they aren't exactly rocket science. Jut be careful not to scratch your very expensive speakers.
Last edited by jwright350; 11/05/08 02:56 PM.
