Help with Martin Logan Quests.


I have an original pair of ML Quests that have served me well for several years. I seem to be having problems with the panels sounding weak or losing volume. They still play but at a much reduced volume compared to the subs. I have substituted other components and think the problem is with the speakers.

Has anyone experienced problems with the electronics or panels that might fit this description?

If these need to be serviced, does anyone know who can do the work and maybe do parts upgrades in the process?

Thanks for your help.
gofaststang

Showing 2 responses by dannylw

Vacuum the panels. When I sent you the message I was in a hurry so there are grammatical errors that I did not correct. Here is the clarification. A second procedure is to vacuum out the electronics. Don't touch anything inside if you don't know how to dissipate the charge. And make sure everything has been disconnected for 24 hrs before you do anything including vacuum.
It sounds to me like you have a major humidity problem. Before replacing anything get a voltmeter and a spl meter. If you have a noise generator or a test CD find the 2.83 volt output level at the output terminals of your amp (do this on a "dry" day). Then measure the speaker output with a spl meter at that level. On a wet day repeat the procedure. If the panel outputs are dramatically different you have a major humidity issue.