Welcome To the Hoffman Amplifiers Forum

September 06, 2025, 08:41:52 am
guest image
Welcome, Guest. Please login or register.
-User Name
-Password



Hoffman Amps Forum image Author Topic: Explain this for me please  (Read 4038 times)

0 Members and 1 Guest are viewing this topic.

Offline 12AX7

  • Level 3
  • ***
  • Posts: 592
Hoffman Amps Forum image
Explain this for me please
« on: March 08, 2012, 11:54:46 pm »
HSS strat. dimarzio super dist. 4 conductor bridge and van zandts in the neck/middle. So i realize that when i touch the polepieces on the SD my body becomes an antenna making a lot of noise and telling me the plate must be wired to the hot. The SC's do it too tho. It's been a while since i did any tweaking to this so i may have spaced done something dumb to the wiring. Anyways, i figure if i reverse all the pickups all will be well. When i dive in i see the SD is wired quite correctly with the red to switch, green to ground and black/white together and used to split it with a switch. heres the thing....the plate was grounded with the shield in the 4 conductor wire. And i had the green and that shield wire grounded to the vol pot. On the SD you are supposed to be able to reverse them with no issues like this because the 2 outer coil conductors can be ground or hot and the plate always has it's own ground.  So why is it i was getting that antenna effect when i touched the polepieces? Now that i've reversed it i don't. I don't get this !

Anyways, the reason i ask leads me to the second weird issue. Now that i reversed them, the bridge/middle position which was dead quiet B4 is now buzzing. It no longer bucks hum with the bridge and middle together. Note that i do NOT use tone controls so that side of the 5 way switch is not used for that and i therefore use it to auto split the SD when in the bridge/middle position. Both the van zandts and SD were reversed, so shouldn't they have stayed the same in this regard?

I posted this to see if i may be spacing and missing something because i really miss having the bridge middle buck the hum because i use that position a lot. Any ideas whats going on here and if theres anything i can do about it?

 


Choose a link from the
Hoffman Amplifiers parts catalog
Mobile Device
Catalog Link
Yard Sale
Discontinued
Misc. Hardware
What's New Board Building
 Parts
Amp trim
Handles
Lamps
Diodes
Hoffman Turret
 Boards
Channel
Switching
Resistors Fender Eyelet
 Boards
Screws/Nuts
Washers
Jacks/Plugs
Connectors
Misc Eyelet
Boards
Tools
Capacitors Custom Boards
Tubes
Valves
Pots
Knobs
Fuses/Cords Chassis
Tube
Sockets
Switches Wire
Cable


Handy Links
Tube Amp Library
Tube Amp
Schematics library
Design a custom Eyelet or
Turret Board
DIY Layout Creator
File analyzer program
DIY Layout Creator
File library
Transformer Wiring
Diagrams
Hoffmanamps
Facebook page
Hoffman Amplifiers
Discount Program


password