Where did you find the isolation washers for the jacks Ultra?
Switchcraft makes a black shoulder washer and a, rigid plastic washer (brown), mouser part#: 502-S-1029 and 502-S-1028 respectively. The shoulder washer is overpriced, so you can use the Keystone alternative, mouser part#: 534-3069. Keystone’s shoulder washer is slightly thicker than the Switchcraft one.
Sorry for another question about the shoulder washers.
I haven't used them before.
Do you need two per jack or do you use one shoulder washer on one side and a flat fiber washer on the other side of the jack?
Structo wrote:Sorry for another question about the shoulder washers.
I haven't used them before.
Do you need two per jack or do you use one shoulder washer on one side and a flat fiber washer on the other side of the jack?
Shoulder on one side flat on the other, you do have to make the hole larger than 3/8 to accommodate the shoulder.
Not sure why you would need the shoulders. In both my Dlator builds I used
a star ground method with two points ( like the original I believe ), and have not had any hum issues with the unit.
BTW I did have great help from Ultra - so thanks for that.