Dampening the base plate on a humbucker? Genius or idiot?

Pickups, magnets, microphones, amps, speakers, cabs, whatever...

Dampening the base plate on a humbucker? Genius or idiot?

Postby Dave Locher » Sat Dec 19, 2015 8:36 pm

I have a Dimarzio super distortion humbucker that wants to feed back at stage volume. Not squealing micro phonics, this is a steady low howl/whine.
Internet searching suggests this is likely the base plate vibrating.
I'm swapping the ceramic magnet out for an Alnico 5 in a couple weeks. Could I stick some insulation on the outside of the base plate to dampen the vibration? If so, would that mess with the sound?
The insulation I have is left over from a hot rod build. It is a very sticky layer of butyl rubber adhered to a heavy aluminum foil. It's used on cars to dampen vibration and reduce noise in the car.
Is this a brilliant idea or a terrible one?
Dave Locher
 
Posts: 155
Joined: Thu Feb 02, 2012 2:56 pm

Re: Dampening the base plate on a humbucker? Genius or idiot?

Postby David King » Sun Dec 20, 2015 2:37 am

I don't see the harm in trying. I'd probably try potting the whole thing in wax again and letting it cool upside down. Are you using springs or surgical tubing to put tension on the adjustment screws?
David King
 
Posts: 2446
Joined: Sat Jan 07, 2012 10:01 pm
Location: Portland, OR

Re: Dampening the base plate on a humbucker? Genius or idiot?

Postby Jason Rodgers » Sun Dec 20, 2015 1:21 pm

Base plate vibration? Doesn't that mean the whole pickup is vibrating? If it's floating in the cavity with springs, I could see that possibly happening. Try a cube of foam under it, or surgical tubing in place of the springs, as David mentions.
-Ruining perfectly good wood, one day at a time.
Jason Rodgers
 
Posts: 1554
Joined: Fri Jan 06, 2012 4:05 pm
Location: Portland, OR

Re: Dampening the base plate on a humbucker? Genius or idiot?

Postby Dave Locher » Sun Dec 20, 2015 6:01 pm

I'll try installing it with tubing instead of springs. I'll also try potting it and see where that gets me. Sticking a piece of dynamat on the back is something I could always do in a few minutes.
Dave Locher
 
Posts: 155
Joined: Thu Feb 02, 2012 2:56 pm


Return to Electronics

Who is online

Users browsing this forum: No registered users and 4 guests

Your purchase from these sites helps support the MIMForum, but only if you start at the links below!!!
Amazon music     Amazon books     Amazon tools     Rockler tools     Office Depot    

The MIMF is a member-supported forum, please consider supporting us with a donation, thanks!
 • Book store • Tool store • Links • 
cron