Martin Logan Purity Help - diyAudio
Go Back   Home > Forums > Loudspeakers > Planars & Exotics

Planars & Exotics ESL's, planars, and alternative technologies

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 13th January 2013, 06:54 AM   #1
zcables is offline zcables  United States
diyAudio Member
 
Join Date: Aug 2008
Location: Seattle
Default Martin Logan Purity Help

I apologize for two things in advance:
First, the speakers are a friend, so I may be slow on the specifics during discussion.
Second, I have limited electrostatic experence.

The pair of Martin Logan Purity speakers are two years old, and then the panel in the right speaker just stopped working correctly. It has very low output, but still makes sound without any popping or crackling. We checked the connections and tried two different preamp, including swapping left and right outputs without change. I helped him pull the woofers and check the wiring, but everything looked okay from my circuits, but limited ESL knowledge. The signal lights on each speaker seem to be working well, and respond the same on the working speaker as the bad one. We also vacuumed both as the regular maintenance suggests.

Now I know the panels can go bad and lose their charge over time, but two years seems like two short a time period for that to happen. Could the high voltage power supply be bad? I don't see that the ICEpower amplification of the panel could be the issue, but it does add a little more complexity to the problem solving. We did disconnect the woofers to ensure that they were working correctly and independantly from the panel.

Thanks for the help!
  Reply With Quote
Old 13th January 2013, 11:34 AM   #2
tyu is offline tyu  United States
diyAudio Member
 
Join Date: Jul 2009
Call ML ...dont wate..if it were me...get two new panels...not one..two!...Could be the bias board But.....Good luck
  Reply With Quote
Old 13th January 2013, 04:47 PM   #3
zcables is offline zcables  United States
diyAudio Member
 
Join Date: Aug 2008
Location: Seattle
Thanks and I shot them an email, but know they aren't open weekends.

Any know of any voltages I can measure, or things I can test for to try to troubleshoot what the exact issue might be?
  Reply With Quote
Old 13th January 2013, 06:58 PM   #4
tyu is offline tyu  United States
diyAudio Member
 
Join Date: Jul 2009
Swap the good-wokring panel with the bad or low output panel....see if it the panel?? one place to start...
  Reply With Quote
Old 13th January 2013, 07:26 PM   #5
zcables is offline zcables  United States
diyAudio Member
 
Join Date: Aug 2008
Location: Seattle
Good idea. Any idea how to remove the panel, I've heard it's pretty easy, but wouldn't want to screw up his good panel if that was the case...
  Reply With Quote
Old 14th January 2013, 04:34 PM   #6
zcables is offline zcables  United States
diyAudio Member
 
Join Date: Aug 2008
Location: Seattle
Got a very helpful email from ML with complete breakdown instructions for the speakers and troubleshooting steps to rule out the panel or electronics. Great customer service!
  Reply With Quote
Old 15th January 2013, 03:13 PM   #7
diyAudio Member
 
bolserst's Avatar
 
Join Date: Jun 2005
Location: Fort Worth, Texas
Quote:
Originally Posted by zcables View Post
Got a very helpful email from ML with complete breakdown instructions for the speakers and troubleshooting steps to rule out the panel or electronics. Great customer service!
I've had positive experiences with ML customer service in the past as well.
Good to hear things haven't changed in that regard since the company sale and organizational change.
Look forward to hearing what you determine the failure mode was on these newer generation ML products.
  Reply With Quote
Old 27th January 2013, 03:02 PM   #8
zcables is offline zcables  United States
diyAudio Member
 
Join Date: Aug 2008
Location: Seattle
I contacted ML customer service as the speakers still have a few more years on the warranty. The nicest customer service rep I've ever talked to helped me swap the panels from left to right to see if the issues was the stat panel or the power supply. The low output followed the panel, so he sent me out a new one. I just got it installed a few nights ago with excellent writen and illustrated instructions, and the speakers are back in business! They sound great already, even though the new panel will need to break-in a little to match the sound of the older panel. This new generation of ML speakers uses Molex connectors for everything, and with their customer service help, repairing your speakers couldn't be easier!
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Help Martin Logan janbb Planars & Exotics 6 4th November 2012 06:53 PM
martin logan cls Williams Audio Planars & Exotics 1 4th October 2012 09:38 PM
Martin Logan CLX Borat Planars & Exotics 2 13th December 2009 04:29 AM
Need help with Martin Logan speaker JariV Multi-Way 10 18th November 2008 06:04 PM
X-Aleph and Martin-Logan Faber Pass Labs 2 7th November 2002 08:40 PM


New To Site? Need Help?

All times are GMT. The time now is 10:54 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2