5 6 0 RobRobinette.com 2 watt JCM800 with a EF80 true push-pull power tubes. 1 ELL1 127 TwoPoints V1 12AX7 127 320 B9A 9-Pin Socket 1,2,3,4,5,6,7,8,9 CHASSIS ELL1 127 TwoPoints Eyelet71 127 Grommet Cap Can 127 _270 NAME W51 127 THREE true -1 _18 false Board1 127 true TwoPoints NONE SQUARE TS1 127 DEFAULT 3 false Eyelet1 127 Eyelet1 127 Eyelet1 127 W4 127 TWO true -1 _28 false W4 127 TWO true -1 _28 false Eyelet1 127 Eyelet1 127 Eyelet1 127 W3 127 FOUR true -1 _22 false Eyelet1 127 Eyelet1 127 Eyelet1 127 Eyelet1 127 Eyelet1 127 Eyelet1 127 Eyelet1 127 Eyelet1 127 Eyelet1 127 Eyelet1 127 Eyelet1 127 Eyelet1 127 Eyelet1 127 Eyelet1 127 Eyelet1 127 Eyelet1 127 Power DPST 127 SPST VERTICAL false Power DPST 127 SPST VERTICAL false 1A SB Fuse & Holder 127 TwoPoints Power Transformer 127 TwoPoints Eyelet71 127 Grommet Eyelet71 127 Grommet Eyelet39 127 Eyelet39 127 Eyelet32 127 Bolt Eyelet50 127 Jack 12A Eyelet50 127 Jack 11 Pad1 127 ROUND _1 NTPH Pad1 127 ROUND _1 NTPH Pad1 127 ROUND _1 NTPH Pad1 127 ROUND _1 NTPH Pad1 127 ROUND _1 NTPH .022uF 630v Bass 127 NAME false Directional false false _63V true Tone Slope 127 VALUE false Directional false HALF _4_BAND Tubular V3B Grid Leak 127 VALUE false Directional false HALF _4_BAND Tubular V3A Grid Leak 127 VALUE false Directional false HALF _4_BAND Tubular 10K 1W 127 NAME false Directional false HALF _4_BAND Standard V3 Cathode 127 VALUE false Directional false HALF _4_BAND Tubular V3A Plate Load 127 VALUE false Directional false HALF _4_BAND Tubular V4B Grid Leak 127 VALUE false Directional false HALF _4_BAND Tubular V4A Grid Leak 127 VALUE false Directional false HALF _4_BAND Tubular W3 127 FOUR true -1 _20 false W3 127 FOUR true -1 _20 false L2 LTP PI CENTER CENTER DEFAULT L2 PI Tail CENTER CENTER DEFAULT L2 Treble CENTER TOP _270 L2 V3B Grid Leak CENTER TOP _270 L2 Power Amp CENTER CENTER DEFAULT L2 PI Cathode RIGHT CENTER _270 W3 50 FOUR true -1 _22 false W27 127 FOUR true -1 _22 false W53 127 FOUR true -1 _22 false V2 12AT7 127 320 B9A 9-Pin Socket 1,2,3,4,5,6,7,8,9 CHASSIS W11 127 FOUR true -1 _22 false W12 127 FOUR true -1 _22 false W27 127 FOUR true -1 _22 false W21 127 FOUR true -1 _22 false W53 127 FOUR true -1 _22 false L4 V2 12AX7 CENTER CENTER DEFAULT L6 Fil 1 CENTER CENTER DEFAULT L6 Fil 2 CENTER CENTER DEFAULT L6 Fil 1 CENTER CENTER DEFAULT L6 Fil 2 CENTER CENTER DEFAULT J3 127 NAME false false W59 127 SEVEN true -1 _18 false W60 127 FOUR true -1 _16 false Preamp Volume 127 _180 LOG ThroughHole false ShaftDown L2 Output Transformer Hammond 125B 11.6K:8 5 Watt CENTER CENTER DEFAULT L1 Preamp 3 & Cathode Follower CENTER CENTER DEFAULT L1 Safety CENTER CENTER DEFAULT L4 Black = Hot LEFT CENTER DEFAULT L4 Green = Safety Ground LEFT CENTER DEFAULT L1 Ground Bolt CENTER CENTER DEFAULT L1 6.3V CENTER CENTER DEFAULT W12 127 FOUR true -1 _22 false W21 127 THREE true -1 _24 false L4 Power Transformer CENTER CENTER DEFAULT L2 Pilot Light CENTER CENTER DEFAULT L2 To All 6.3V CENTER CENTER DEFAULT L2 Fil CENTER CENTER DEFAULT L2 10" 8 Ohm Speaker CENTER CENTER DEFAULT L2 Tip CENTER CENTER DEFAULT L2 Tip CENTER CENTER DEFAULT L2 Aux Speaker CENTER CENTER DEFAULT Pad3 127 ROUND _1 NTPH Pad3 127 ROUND _1 NTPH Eyelet71 127 Grommet Eyelet1 127 Eyelet1 127 Eyelet1 127 Eyelet1 127 Eyelet1 127 L1 1A Slow Blow Fuse CENTER CENTER DEFAULT W57 127 THREE true -1 _18 false W9 127 FOUR true -1 _22 false W28 127 FOUR true -1 _20 false W28 127 FOUR true -1 _22 false W21 127 FOUR true -1 _20 false W21 127 FOUR true -1 _22 false W1 127 THREE true -1 _26 false L1 Power CENTER CENTER DEFAULT L2 A RobRobinette.com design based on the Marshall JCM800 V3.9 RIGHT CENTER DEFAULT L4 White = Neutral LEFT CENTER DEFAULT W1 127 FOUR true -1 _26 false Mid 127 _180 LIN ThroughHole false ShaftDown L1 DPST CENTER CENTER DEFAULT L4 Power Cord CENTER CENTER DEFAULT L5 See https://robrobinette.com/RR2104_Master_Volume_Micro.htm RIGHT CENTER DEFAULT L5 Black line on caps indicates outer foil RIGHT CENTER DEFAULT L5 All resistors 1/2 watt 10% unless specified RIGHT CENTER DEFAULT W3 127 FOUR true -1 _22 false L2 Tone Slope CENTER CENTER DEFAULT Dot4 V3B Plate Load 127 VALUE false Directional false HALF _4_BAND Tubular W3 127 FOUR true -1 _22 false 1.2K 2W 127 NAME false Directional false HALF _4_BAND Standard .022uF 630v Coupling 127 NAME false Directional false _63V true W28 127 FOUR true -1 _22 false .022uF 630v Coupling 127 NAME false Directional false _63V true 300 3W 127 NAME false Directional false HALF _4_BAND Standard V4B Grid Stopper 127 VALUE false Directional false HALF _4_BAND Tubular V4A Grid Stopper 127 VALUE false Directional false HALF _4_BAND Tubular L2 Power Tube Cathode CENTER TOP _270 L1 HV CENTER CENTER DEFAULT J2 127 NAME false Directional false J2 127 NAME false Directional false MV 127 _180 LOG ThroughHole false ShaftDown Dot4 V2B Cathode 127 VALUE false Directional false HALF _4_BAND Tubular V2A Cathode 127 VALUE false Directional false HALF _4_BAND Tubular W21 127 FOUR true -1 _22 false .022uF 630v Coupling 127 NAME false Directional false _63V true L2 Grid Stopper CENTER CENTER _270 L2 Grid Leaks CENTER CENTER DEFAULT L2 Choke Hammond 155H 4H 50ma CENTER CENTER DEFAULT L2 NFB CENTER CENTER _270 L2 V2B Cathode RIGHT CENTER _270 L2 V2A Cathode RIGHT CENTER _270 L2 V3A Grid Leak CENTER CENTER _270 L2 Grid Stopper CENTER CENTER _270 W51 127 THREE true -1 _18 false W5 127 FOUR true -1 _18 false false Dot4 Dot4 W58 127 THREE true -1 _18 false L2 Choke RIGHT CENTER DEFAULT L2 Choke LEFT CENTER DEFAULT L2 OT Center Tap LEFT CENTER DEFAULT L6 Fil 1 LEFT CENTER DEFAULT L6 Fil 2 CENTER CENTER DEFAULT L2 Dropping CENTER CENTER _270 NFB 127 VALUE false Directional false HALF _4_BAND Tubular W3 127 FOUR true -1 _20 false L2 B CENTER CENTER DEFAULT L2 C CENTER CENTER DEFAULT L2 D CENTER CENTER DEFAULT L3 JJ 40/20/20/20 500V CENTER CENTER DEFAULT L2 GND CENTER CENTER DEFAULT L2 A CENTER CENTER DEFAULT W3 127 FOUR true -1 _22 false L2 Dropping CENTER CENTER _270 W3 127 FOUR true -1 _22 false W3 127 FOUR true -1 _22 false L4 V3 12AX7 CENTER CENTER DEFAULT L1 LTP Phase Inverter CENTER CENTER DEFAULT L5 Princeton Reverb Chassis RIGHT CENTER DEFAULT L2 OT LEFT CENTER DEFAULT L2 OT LEFT CENTER DEFAULT W3 127 FOUR true -1 _22 false W3 127 FOUR true -1 _22 false W3 127 FOUR true -1 _22 false .1uF 200v AC Shunt 127 NAME false Directional false _63V true Presence 127 _180 LIN ThroughHole false ShaftDown Presence 127 BOTH false Directional false HALF _4_BAND Tubular W39 127 THREE true -1 _26 false W1 127 TWO true -1 _26 false W1 127 THREE true -1 _26 false Presence-Poly 127 VALUE false Directional false _63V GND2 DEFAULT DEFAULT 1 L2 Input Jacks CENTER CENTER DEFAULT L1 1 CENTER CENTER DEFAULT L1 2 CENTER CENTER DEFAULT L1 3 CENTER CENTER DEFAULT W3 127 FOUR true -1 _20 false Bass 127 _180 LOG ThroughHole false ShaftDown L1 Output Transformer CENTER CENTER DEFAULT L1 Choke LEFT CENTER DEFAULT L1 4H 50ma CENTER TOP DEFAULT L2 Use Star Washer On Presence Pot CENTER CENTER DEFAULT L4 Safety Slack LEFT CENTER DEFAULT L2 Existing Chassis Hole CENTER CENTER DEFAULT L2 Y CENTER CENTER DEFAULT L2 X CENTER CENTER DEFAULT L2 U CENTER CENTER DEFAULT L2 O CENTER CENTER DEFAULT L2 - CENTER CENTER DEFAULT L2 Existing Chassis Hole CENTER CENTER DEFAULT L2 Ground CENTER CENTER DEFAULT Eyelet39 127 Eyelet1 127 Eyelet1 127 Eyelet1 127 Eyelet1 127 Eyelet1 127 Eyelet1 127 Eyelet1 127 Eyelet1 127 Eyelet1 127 Eyelet1 127 Eyelet1 127 Eyelet1 127 Eyelet1 127 Eyelet1 127 Eyelet1 127 Eyelet1 127 Eyelet1 127 L2 Warehouse Guitar Speakers 10" Green Beret CENTER CENTER DEFAULT W5 127 FOUR true -1 _18 false false Mounting Hole 127 TwoPoints Mounting Hole 127 TwoPoints Mounting Hole 127 TwoPoints Pilot Light 127 DEFAULT 180 Jack 12A 127 DEFAULT 0 SWITCHED true L2 Mounting CENTER CENTER DEFAULT L2 Hole CENTER CENTER DEFAULT L2 Hole CENTER CENTER DEFAULT L2 Mounting CENTER CENTER DEFAULT L2 Hole CENTER CENTER DEFAULT Jack 12A 127 DEFAULT 60 SWITCHED true W1 127 THREE true -1 _26 false W1 127 FOUR true -1 _20 false W51 127 THREE true -1 _18 false W51 127 THREE true -1 _18 false W5 127 FOUR true -1 _18 false false W52 127 THREE true -1 _18 false W5 127 FOUR true -1 _18 false false W51 127 THREE true -1 _18 false Treble 127 _180 LIN ThroughHole false ShaftDown W12 127 FOUR true -1 _22 false W2 127 FOUR true -1 _22 false W2 127 FOUR true -1 _22 false W3 127 FOUR true -1 _22 false V1 12AX7 127 320 B9A 9-Pin Socket 1,2,3,4,5,6,7,8,9 CHASSIS W12 127 FOUR true -1 _22 false W27 127 FOUR true -1 _22 false W53 127 FOUR true -1 _22 false W11 127 FOUR true -1 _22 false Dot4 V1A Cathode 127 VALUE false Directional false HALF _4_BAND Tubular W1 127 THREE true -1 _26 false W1 127 THREE true -1 _26 false Dot4 Mounting Hole 127 TwoPoints V1A Grid Stopper 127 VALUE false Directional false HALF _4_BAND Standard W1 127 THREE true -1 _26 false W1 127 THREE true -1 _26 false L4 V1 12AX7 CENTER CENTER DEFAULT L6 Fil 1 CENTER CENTER DEFAULT L6 Fil 2 CENTER CENTER DEFAULT L1 Preamp 1 & Cold Clipper CENTER CENTER DEFAULT L2 Grid CENTER CENTER DEFAULT L2 Plate CENTER CENTER DEFAULT L2 Cathode CENTER CENTER DEFAULT L2 Cathode CENTER CENTER DEFAULT L2 Grid CENTER CENTER DEFAULT L2 Plate CENTER CENTER DEFAULT L6 A CENTER CENTER DEFAULT L6 B CENTER CENTER DEFAULT L2 V1B Cathode RIGHT CENTER _270 L2 V1A Cathode RIGHT CENTER _270 L2 Mounting CENTER CENTER DEFAULT L2 Hole CENTER CENTER DEFAULT Input 127 VALUE false Directional false HALF _4_BAND Standard Mounting Hole 127 TwoPoints L2 1 High CENTER CENTER DEFAULT L2 Ground CENTER CENTER DEFAULT L2 Chassis CENTER CENTER DEFAULT L2 Preamp CENTER CENTER DEFAULT L2 Mounting CENTER CENTER DEFAULT L2 Hole CENTER CENTER DEFAULT W11 50 FOUR true -1 _22 false W21 127 FOUR true -1 _22 false .022uF 630v Coupling 127 NAME false Directional false _63V true L2 V1B Plate Load CENTER CENTER DEFAULT Treble 127 VALUE false Directional false _63V false DROP W3 127 FOUR true -1 _22 false W11 50 FOUR true -1 _22 false 10K 2W 127 NAME false Directional false HALF _4_BAND Standard .022uF 630v Mid 127 NAME false Directional false false _63V true W1 127 THREE true -1 _26 false V1B Cathode 127 VALUE false Directional false HALF _4_BAND Tubular Bypass 127 VALUE false Directional false _63V true L2 Bypass CENTER TOP _270 W1 127 TWO true -1 _20 false L2 Use Star Washer On High Input CENTER CENTER DEFAULT L2 Input CENTER TOP DEFAULT W3 127 FOUR true -1 _22 false W1 127 THREE true -1 _26 false Attenuator 127 VALUE false Directional false HALF _4_BAND Tubular W1 127 THREE true -1 _26 false W1 127 THREE true -1 _26 false .022uF 630v Coupling 127 NAME false Directional false _63V true W12 127 FOUR true -1 _22 false V2A Grid Leak 127 VALUE false Directional false HALF _4_BAND Tubular Treble Peaker 127 VALUE false Directional false HALF _4_BAND Tubular Treble 127 VALUE false Directional false _63V false DROP W1 127 THREE true -1 _26 false W1 127 THREE true -1 _26 false W1 127 THREE true -1 _26 false L2 V2A Grid Leak CENTER CENTER DEFAULT L2 Treble Peaker CENTER TOP DEFAULT L2 Grid Stopper CENTER CENTER _270 Treble Peak 127 VALUE false Directional false _63V false DROP W1 127 THREE true -1 _26 false W12 127 FOUR true -1 _22 false 100K 1W 127 NAME false Directional false HALF _4_BAND Standard J3 127 NAME false false W12 127 FOUR true -1 _22 false L2 Dropping CENTER CENTER DEFAULT W28 127 FOUR true -1 _22 false W3 127 FOUR true -1 _22 false L2 D (B+4) CENTER CENTER DEFAULT L2 Treble Peaker CENTER CENTER DEFAULT W21 127 FOUR true -1 _22 false L2 V1A Plate Load CENTER CENTER DEFAULT Rectifier 127 VALUE false Directional false 1N4007 Rectifier 127 VALUE false Directional false 1N4007 Rectifier 127 VALUE false Directional false 1N4007 Rectifier 127 VALUE false Directional false 1N4007 L2 B+ CENTER CENTER DEFAULT W3 127 FOUR true -1 _22 false W3 127 THREE true -1 _20 false W3 127 THREE true -1 _20 false L2 C (B+3) CENTER CENTER DEFAULT L2 Preamp Ground Bus CENTER CENTER DEFAULT L2 Tone Stack CENTER CENTER DEFAULT W11 127 SEVEN true -1 _22 false 22uF 350V 127 NAME false Directional false _63V true 100K 1W 127 NAME false Directional false HALF _4_BAND Standard 100K 1W 127 NAME false Directional false HALF _4_BAND Standard Metal Film 127 VALUE false Directional false HALF _5_BAND Standard Carbon Comp 127 VALUE false Directional false HALF _4_BAND Tubular Metal Oxide 127 VALUE false Directional false HALF _5_BAND Standard L2 2 Low CENTER CENTER DEFAULT L2 Mounting CENTER CENTER DEFAULT L2 Metal Film LEFT CENTER DEFAULT L2 Carbon Composition LEFT CENTER DEFAULT L2 Metal Oxide LEFT CENTER DEFAULT Bright 127 VALUE false Directional false _63V false DROP W15 127 THREE true -1 _26 false W16 127 THREE true -1 _26 false L7 Bright Cap CENTER CENTER DEFAULT L2 Ground CENTER CENTER DEFAULT L2 Switch CENTER CENTER DEFAULT W17 127 THREE true -1 _26 false Eyelet2 127 Bleeder/Divider 127 VALUE false Directional false HALF _4_BAND Standard W18 127 THREE true -1 _26 false Bleeder/Divider 127 VALUE false Directional false HALF _4_BAND Standard W19 127 THREE true -1 _26 false 3.3K 2W 127 NAME false Directional false HALF _4_BAND Standard L8 Bleeder/Divider CENTER TOP _270 L2 Ground Bolt CENTER CENTER DEFAULT 10uF 100V 127 NAME false Directional false _63V true W20 127 THREE true -1 _26 false W22 127 THREE true -1 _26 false ELL6 127 TwoPoints V5 EF80 127 270 B9A EF80 tube and 9-pin socket 1,2,3,4,5,6,7,8,9 CHASSIS V4 EF80 127 270 B9A EF80 and 9-pin socket 1,2,3,4,5,6,7,8,9 CHASSIS W21 127 FOUR true -1 _22 false W35 127 FOUR true -1 _20 false W34 127 FOUR true -1 _20 false W39 127 THREE true -1 _24 false W39 127 THREE true -1 _24 false W55 127 FOUR true -1 _22 false W62 127 FOUR true -1 _22 false W68 127 SEVEN true -1 _18 false false W63 127 THREE true -1 _18 false W64 127 THREE true -1 _18 false 6.3v CT 127 VALUE false Directional false false HALF _4_BAND Standard 6.3v CT 127 VALUE false Directional false false HALF _4_BAND Standard W3 127 FOUR true -1 _18 true Screen 127 VALUE false Directional false false HALF _4_BAND Standard L9 Elevation CENTER CENTER DEFAULT L10 65V Heater CENTER CENTER DEFAULT L11 Attenuator CENTER TOP DEFAULT L2 E (B+5) CENTER CENTER DEFAULT L40 Octal to CENTER CENTER DEFAULT L80 Novel Adapter CENTER CENTER DEFAULT L4 V4 EF80 CENTER CENTER DEFAULT L1 Parallel Push-Pull Power Tubes CENTER CENTER DEFAULT L6 Fil 2 CENTER CENTER DEFAULT L4 V6 EF80 CENTER CENTER DEFAULT L6 Fil 1 6.3V CENTER CENTER DEFAULT L1 200V 130ma & 6.3V 4 Amps CENTER CENTER DEFAULT L1 Primary CENTER CENTER DEFAULT L1 6.3V Elevated CENTER TOP DEFAULT L6 Fil 1 6.3V CENTER CENTER DEFAULT L6 Fil 2 CENTER CENTER DEFAULT L1 Center Tap CENTER CENTER DEFAULT L2 2W CENTER CENTER _270 L1 NFB CENTER CENTER DEFAULT L2 JCM800 MICRO EF80 QUAD CENTER CENTER DEFAULT L4 Marshall 2104/JCM800 With Four 1 Watt EF80 Pentode Power Tubes In A Princeton Reverb Chassis CENTER CENTER DEFAULT L1 Screen CENTER BOTTOM DEFAULT L1 Screen CENTER TOP DEFAULT W56 127 FOUR true -1 _22 false W20 127 THREE true -1 _26 false L2 Rectifier CENTER CENTER DEFAULT L2 Solid State CENTER CENTER DEFAULT L2 D (B+4) CENTER CENTER DEFAULT W33 127 FOUR true -1 _22 false J2 127 NAME false Directional false W3 127 FOUR true -1 _20 false W39 127 THREE true -1 _24 false L2 B (B+2) CENTER CENTER DEFAULT L1 Output Transformer CENTER TOP DEFAULT L1 11.6K:8 Ohm CENTER TOP DEFAULT L1 Use Hammond 125B Yellow & Black Wires for 11.6K:8 Ohms RIGHT CENTER DEFAULT L1 AnTek AS-05T200 CENTER CENTER DEFAULT Screen 127 VALUE false Directional false false HALF _4_BAND Standard W39 127 THREE true -1 _24 false PI Stability 127 VALUE false Directional false false _63V V1 127 270 B9A EF80 tube and 9-pin socket 1,2,3,4,5,6,7,8,9 CHASSIS W6 127 FOUR true -1 _22 false W7 127 FOUR true -1 _20 false W8 127 THREE true -1 _24 false L2 B+5 Filter Cap CENTER CENTER _270 L2 PI Stability CENTER CENTER DEFAULT LAB3 Fil 2 CENTER CENTER DEFAULT LAB4 V7 EF80 CENTER CENTER DEFAULT LAB5 Fil 1 6.3V CENTER CENTER DEFAULT LAB6 Screen CENTER BOTTOM DEFAULT W13 127 THREE true -1 _24 false R1 127 VALUE false Directional false false HALF _4_BAND Standard V2 127 270 B9A EF80 and 9-pin socket 1,2,3,4,5,6,7,8,9 CHASSIS W14 127 FOUR true -1 _22 false W23 127 FOUR true -1 _20 false W24 127 THREE true -1 _24 false W25 127 FOUR true -1 _22 false R4 127 VALUE false Directional false false HALF _4_BAND Standard LAB7 Fil 1 6.3V CENTER CENTER DEFAULT LAB8 Fil 2 CENTER CENTER DEFAULT LAB9 Screen CENTER TOP DEFAULT W30 127 THREE true -1 _24 false W31 127 THREE true -1 _26 false W10 127 FOUR true -1 _22 false W32 127 THREE true -1 _26 false W29 127 THREE true -1 _26 false LAB10 V5 EF80 CENTER CENTER DEFAULT L2 PI Plate Loads 1W CENTER CENTER DEFAULT L1 Drilled New Hole CENTER TOP DEFAULT L2 C (B+3) CENTER CENTER DEFAULT LAB1 Cut New Hole CENTER TOP DEFAULT LAB2 Cut New Hole CENTER TOP DEFAULT LAB11 Option: Use<br>This Hole With<br>Novel Adapter CENTER TOP DEFAULT