Rubber bumpers on Mark IV chassis necessary?

Pre Recto days. Boogie modified Fenders, Mark I-IV, Dual Calibers, etc

Moderators: Guitarzan, Grandor, ned, Platypus

Post Reply
elegost
Bottle Rocket
Posts: 2
Joined: Mon May 01, 2017 8:03 pm

Rubber bumpers on Mark IV chassis necessary?

Post by elegost » Thu Sep 07, 2017 7:32 pm

Hello,

I'm rehousing my Mark IVa from the original combo into a Mesa headshell, finally.

On the combo, which had sus-4 mounting, there were little metal claws that seemed to provide a grounding contact between the foil shielding of the combo and the metal of the head chassis.

On the new headshell, it has the foil shielding but no little claws.
There are little rubber bumper/spacers on the top of the headshell near each mounting screw hole. You can see them in the picture linked below
http://www.monkeymatic.com/pub/mesa_mk4_gutshot1.jpg

I'm wondering i should remove these rubber bumpers so the metal chassis makes direct contact with the foil shielding on my new headshell?
If i leave them it seems like there will be no direct contact btw the foil and the head chassis, invalidating any shielding from the foil.

I appreciate any advice

gts
Mark IV
Posts: 870
Joined: Fri Jul 01, 2011 4:09 pm
Location: Looking over the shoulder of the guy who lost his apples - not that he really ever had any to lose.

Re: Rubber bumpers on Mark IV chassis necessary?

Post by gts » Wed Sep 13, 2017 11:19 pm

elegost wrote:Hello,

I'm rehousing my Mark IVa from the original combo into a Mesa headshell, finally.

On the combo, which had sus-4 mounting, there were little metal claws that seemed to provide a grounding contact between the foil shielding of the combo and the metal of the head chassis.

On the new headshell, it has the foil shielding but no little claws.
There are little rubber bumper/spacers on the top of the headshell near each mounting screw hole. You can see them in the picture linked below
http://www.monkeymatic.com/pub/mesa_mk4_gutshot1.jpg

I'm wondering i should remove these rubber bumpers so the metal chassis makes direct contact with the foil shielding on my new headshell?
If i leave them it seems like there will be no direct contact btw the foil and the head chassis, invalidating any shielding from the foil.

I appreciate any advice
Just put the chassis into your new headshell.
No need to remove the rubber "bumper/ spacers"
The shielding wont be "invalidated" because there is no direct contact. :roll:

Post Reply