’ve been experiencing some channel imbalance with my Martin Logan’s. When changing the speakers it follows the issue, I assumed it was the room acoustics for awhile. It’s not the pre or power amp. What could cause a channel imbalance on a speaker? Maybe I got a bad panel? I got replacements a few months ago.
I had this sensation prior to recapping and repaneling them. I got the power supply board completely refreshed by a highly regarded tech in my area. I assumed it was a bad cap or bad panel. The one side that I thought was quieter before the work and panel replacement (left side) was the same after replacing everything. I switched speakers today in my room and it followed to the opposite side. I had a channel imbalance before fixing them up completely and now still have a channel imbalance.
Both woofers work properly. Directions were closely followed when installing new panels. Power supply board was professionally worked on. Issue follows when changing the speakers around in my room.
I contacted Martin Logan and was told it could be the following-
1) Bad internal HV power supply not putting out the correct voltage
2) Loose connection of the stat wires on the panel
3) Bad panel
I was informed to change the panels around which I did.
I switched the louder panel on to the other speaker. The louder panel now became the quieter one. So the culprit is the speaker, not the panel. I forgot to plug the speakers into the wall at first and the channel imbalance seemed to be solved. After plugging the speakers into the wall the imbalance came back. I changed the power cords between speakers and nothing happened so it isn’t the cords. I cleaned both of the areas where power cords connect and nothing happened. I’m unsure what to do next. I believe the issue is an internal part of the speaker of the power supply board.
Also, various parts of the speakers are different in small ways even thought they have the same serial number. The power supply boards were slightly different and the connectors that connect the panel to speaker were different as well. Very strange seeing they are supposed to be the same as a pair.
I’ve become very frustrated with the ownership of these speakers due to how much they cost to work on and how many issues and headaches I have had with them. I just want these to be working properly and have done everything possible to make sure of it. I have invested thousands of dollars and countless hours of time only to run into other problems and expenses. Any help to resolve this would be much appreciated, I love these speakers so much but am getting rather discouraged. I contacted the tech as we work closely together on many different things and I am learning how to fix up audio, I am in college and have no experience doing so. He has been helping me in the process but wanted some other input. Thanks!
Connor
I had this sensation prior to recapping and repaneling them. I got the power supply board completely refreshed by a highly regarded tech in my area. I assumed it was a bad cap or bad panel. The one side that I thought was quieter before the work and panel replacement (left side) was the same after replacing everything. I switched speakers today in my room and it followed to the opposite side. I had a channel imbalance before fixing them up completely and now still have a channel imbalance.
Both woofers work properly. Directions were closely followed when installing new panels. Power supply board was professionally worked on. Issue follows when changing the speakers around in my room.
I contacted Martin Logan and was told it could be the following-
1) Bad internal HV power supply not putting out the correct voltage
2) Loose connection of the stat wires on the panel
3) Bad panel
I was informed to change the panels around which I did.
I switched the louder panel on to the other speaker. The louder panel now became the quieter one. So the culprit is the speaker, not the panel. I forgot to plug the speakers into the wall at first and the channel imbalance seemed to be solved. After plugging the speakers into the wall the imbalance came back. I changed the power cords between speakers and nothing happened so it isn’t the cords. I cleaned both of the areas where power cords connect and nothing happened. I’m unsure what to do next. I believe the issue is an internal part of the speaker of the power supply board.
Also, various parts of the speakers are different in small ways even thought they have the same serial number. The power supply boards were slightly different and the connectors that connect the panel to speaker were different as well. Very strange seeing they are supposed to be the same as a pair.
I’ve become very frustrated with the ownership of these speakers due to how much they cost to work on and how many issues and headaches I have had with them. I just want these to be working properly and have done everything possible to make sure of it. I have invested thousands of dollars and countless hours of time only to run into other problems and expenses. Any help to resolve this would be much appreciated, I love these speakers so much but am getting rather discouraged. I contacted the tech as we work closely together on many different things and I am learning how to fix up audio, I am in college and have no experience doing so. He has been helping me in the process but wanted some other input. Thanks!
Connor
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I just want the imbalance fixed. They’re great otherwise. 
