Alembic Guitars Club

Alembic products => Owning an Alembic => Troubleshooting => Topic started by: lyla53 on February 28, 2014, 09:36:34 PM

Title: Essence low pass filter pot
Post by: lyla53 on February 28, 2014, 09:36:34 PM

Just picked up a 91 Essence. A player but a very nice one. Its got a loud squeal type electronic noise (almost like speaker feed back) when I turn the low pass filter knob to the extreme bright setting. Actually it occurs just before the pot hits the mechanical limit. The squeal is momentary and silences after it passes through this position. The pot actuates smoothly with no mechanical sounds. It seems to be intermittent as well, if I turn the knob quickly I don't get the noise - slowly and I'll get it.  
If it was static sounding I'd say it the pot was dirty or been set in the same position for a long time however this sound is an unusual electronic squeak or squeal. If it occurred in a live setting , it would be loud enough to clear the room
Thoughts?

Title: Essence low pass filter pot
Post by: jazzyvee on February 28, 2014, 09:56:48 PM

Try this
http://club.alembic.com/Images/16271/16357.html?1107712343 (http://club.alembic.com/index.php?topic=220)

Title: Essence low pass filter pot
Post by: lyla53 on March 01, 2014, 09:39:24 PM

Thank You - I actuated the pot probably +50 times stop to stop...It helped as the noise is now intermittent however, It's there still. I can also get the noise if I tap on the pot slightly when its in the full bright position. I'm thinking I just need a new pot. Thoughts?