Mesa Dual Rec - Tube Roll & Bias Mod
45After discussing the tube rolls, and which ones you actually need,
I mod the amp installing bias pots . . . possibly poorly.
0:00 - How many tube do you actually need ?
0:55 - Tube Rolls
1:24 - No FX Loop ?
3:02 - Preamp Recommendations
4:07 - No Rectifiers ?
4:47 - 2 Power Tubes ?
5:14 - My usual tube rant that was common at the time
5:53 - Preamp Tube Effects
7:48 - Bias Test Tooling
8:08 - Reviewing the Bias Circuit Schematic
9:31 - What to Change to Adjust
11:00 - Bias Resistor Location
13:27 - Pot Prep & Board Removal
15:30 - Hole Fabrication
17:07 - Attempted Pot Mounting
18:00 - Mistake were made . . .
20:22 - Pot Mounting Take 2
21:14 - Wiring Connecting
22:36 - 6L6 Biasing
25:28 - EL34 Biasing
26:49 - SPEEEEED METAL !
27:46 - Switching back to 6L6
28:24 - Postamble