repairs for Martin Logan CLS II

Before you spend any money, try unplugging the bad speaker and vacuuming both sides of the diaphragm. A foreign object could be causing this problem.

I repaired a similar problem with an Audiostatic SW-100 (it was delayed action shipping damage in my case, which caused most of the diaphragm's charge to migrate to the problem area).

Hi,

I had this same problem with my martin logan Ascent speakers. A component in the crossover network has failed. You will need to talk with martin logan and arrange an exchange of your crossoverl.

thanks for the info, after vacuuming the panel the lack of power issue seems to be solved. there is still a popping noise at moderate volume. maybe i didnt vacuum thoroughly enough or another problem exist. i will try vacuuming again and see how it goes. again, thanks for the help.

any other ideas/solutions?

Try Martinloganowners.com

There is a teqnuique on there about washing the panel in the shower. Not Kidding.

thanks, i'll check into it.

A few other things: Check the power fuse on the bad speaker. It might be bad, or not in tight. Also, there is a little IC chip on the main PC board inside the electronics chassis which sometimes fails, producing the problem you describe. Take the top off the electronics box, (DON'T TOUCH ANYTHING!) and check to see if the little LED on the circuit board is glowing. If it's not, then the IC chip has gone bye bye! Jim Power at ML will send you new ones, but they're only a couple bucks at your local electronics supply store. If you think that might be it, let me know and I'll try and help you further.

Neil