tube cans

18watt-specific Tech Talk - Building, Fixing, Parts, Mods...

Moderators: rock_mumbles, CurtissRobin, Daviedawg, Graydon, zaphod_phil

geoff 1965
Occasional poster
Occasional poster
Posts: 335
Joined: Mon 01/04/16 3:52 pm

tube cans

Postby geoff 1965 » Thu 12/06/18 9:48 am

hello,
i bought an old royal air force amp from the 50/60's a while ago and the tube cans have a coat of screening paint on both the outside and inside.
i think it's a good idea especially for EF86's and the old mullards which can be a bit microphonic,it looks the same type of paint you sometimes see inside guitar pickup cavaties.
003.JPG
p.s. tried sending the pic Josh but does'nt add on in private messaging
You do not have the required permissions to view the files attached to this post.
0 x

User avatar
JMPGuitars
Super Duper Admin
Super Duper Admin
Posts: 1051
Joined: Tue 09/18/12 8:00 pm
Location: South Central, MA
Contact:

Re: tube cans

Postby JMPGuitars » Sun 12/09/18 12:53 pm

I use similar tube shields on all my builds: Image

The paint doesn't really matter, the metal shield does the actual shielding. The only benefit of conductive paint on the tube shield is so that you don't lose conductivity where the metal contacts the retaining ring, and then you don't have to sand down the contact areas.

Thanks,
Josh
0 x
'I installed a skylight in my apartment yesterday... The people who live above me are furious.' - Steven Wright
Web Design - DolceVittoria.com
Guitars / Amps / Effects - JMPGuitars.com


Return to “18watt Technical Discussion”

Who is online

Users browsing this forum: No registered users and 1 guest