Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: Oddvar on July 25, 2016, 07:17:26 am

Title: Groundingissues with Blues Junior Hoffman build
Post by: Oddvar on July 25, 2016, 07:17:26 am

Hi.  I was wondering if anyone can tell me why thev1-2, v1-2 and v2-7 leads are shielded and if the shield should go anywhere?  I get a bit of noise in the build, though sounding great.

Best.

Title: Re: Groundingissues with Blues Junior Hoffman build
Post by: sluckey on July 25, 2016, 08:08:02 am

Those low level signal wires are long and should be shielded to minimize noise pickup. Connect the shield to the ground buss on the pots. Don't connect the shield at the tube end of the wire.