Fender Blues Jr - Everything You Need To Know Refined & Updated!

I've made several refinements to Pro Amp Solutions reliability and voicing modifications for the Fender Blues Jr and I go through each one in more detail in this video. Join me as I walk through the modifications and explain the eye candy. The outcomes are worth the watch. Reach out to me at [email protected] if you would like me to modify your Blues Jr or if you would like me to curate a kit for you. Love Your Tone! Following are the refined and updated reliability and tone voicing stages and associated component details for the newer green board. RELIABILITY: Stage 1: Filter Cap Replacement & Adjustable Bias – ESSENTIAL!: C25: 47uF 450V F&T Axial Electrolytic (100uF for Stage 1 Tone Voicing) C26 47uF F&T 500V Axial Electrolytic C27, C28: 22uF F&T 500V Axial Electrolytic C33:100uF 35V Nichicon Radial Electrolytic 2.5mm or 5mm Lead Spacing R52: 50K 10-Turn Potentiometer Stage 2: Speaker Cable & Input Jack: Jack: Switchcraft Type 12A Shunt Tip Speaker Cable: Neutrik or Amphenol Plug & 18AWG Stranded Wire Soldered To Speaker Stage 3: Replacement Tube PCB: There are multiple options available, here is the one I use... https://borishelectronics.com/product... Replace Ribbon Cables with 22AWG Stranded Teflon Jacketed Wire - I used RED for Plates, YELLOW for Screens, WHITE for signal grids, BLUE for cathodes, GREEN for ground in this video. TONE VOICING: Stage 1: Reservoir Cap & Speaker Change: C25: 100uF 450V F&T Axial Electrolytic Speaker: Your Preference, My Favorites: Scumback BM75-8-25W, Eminence GA-SC64, Celestion Creamback Stage 2: Tone Stack, Coupling Caps, Bypass Caps, Treble Bleed Cap, Power Tube Screen Resistors & Plate Resistors, Heater Elevation: C6: .1uF 400V Polypropylene Film C5: 330pF 500V MLCC NO-COG R11: 82K 1/2W Metal Film C2, C8: .022uF 400V Polypropylene Film C1: 1uF 63V Vishay Axial Electrolytic C4: 2.2uF 63V Vishay Axial Electrolytic C3: 120pF 500V Silver Mica (Treble Bleed) R35, R36: 470R or even 1K, 3W Metal Film R3, R8, R16, R30: 100K 1W Metal Film (Plate Resistor Noise Reduction) R28: 91K 1W Metal Film (Plate Resistor Noise Reduction) R29: 9.1K 1W Metal Film (Plate Resistor Noise Reduction) Heater Elevation: Cut Trace & Jumper Wire - See Video For Implementation Stage 3: Reverb Tank, Reverb Power Supply, Reverb OpAmp, Reverb Input, Reverb Return Filter, Reverb Treble Bleed: Reverb Tank: MOD 8BB2C1B (See Video For Mounting Application With Bag & Cardboard) C30, C32: 680uF 50V Nichicon Radial Electrolytic 5mm Lead Spacing C31, C34: 470uF 25V Nichicon Radial Electrolytic 5mm Lead Spacing (NOTE OF CAUTION - C34 POLARITY IS INCORRECTLY MARKED ON THE CREAM BOARD, NEGATIVE SHOULD BE TOWARDS THE BOTTOM OF THE AMP. D7,D8: 1N5353B 16V 5W Zener R50, R53: 220R 3W Metal Film U1: NJM4556 Hi Current Dual OpAmp R39: 180R 1/2W Carbon Film R40: 18K 1/2W Carbon Film C19: Replace with 3.9K 1/2W Carbon Film & 10nF 100V Polypropylene in SERIES C23: Replace with 820R 1/2W Carbon Film & 3.3nF 100V Polypropylene in SERIES TUBE VOICING RECOMMENDATIONS: Power Tubes: TAD EL84-STR or Tung-Sol EL84/6BQ5 Phase Inverter: TAD 12AX7/ECC83-Cz or Tung-Sol 12AX7 1st Preamp Tube: TAD 12AX7/ECC83-Cz or Mullard CV4004/12AX7 2nd Preamp Tube: TAD 12AX7/ECC83-Cz or Mullard ECC83/12AX7 SUBJECT MATTER TIME SEGMENTS: 0:00 Welcome, Let’s Get Started! Contact Information: [email protected] Thank You For Watching My Channel, John