4 5 0 Rob Robinette 5F6A-M Bassman Micro Schematic 1 Pad1 ROUND _1 Pad2 ROUND _1 Pad2 ROUND _1 Pad1 ROUND _1 Pad1 ROUND _1 Pad1 ROUND _1 Pad1 ROUND _1 Pad2 ROUND _1 Pad1 ROUND _1 Pad1 ROUND _1 V1A 12AY7* 12AY7 NAME false DEFAULT NONE false V2A 12AX7 12AX7 NAME false DEFAULT NONE false Coupling V1A 127 VALUE false Directional false ABOVE _63V false J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false GND1 DEFAULT DEFAULT Input 127 VALUE false Directional false ABOVE HALF GND1 DEFAULT DEFAULT V1A Load 127 VALUE false Directional false ABOVE HALF V1A Cathode 127 VALUE false Directional false ABOVE HALF V1A Cathode Bypass 127 VALUE false Directional false ABOVE _63V false GND1 DEFAULT DEFAULT V2A Load 127 VALUE false Directional false ABOVE HALF Rectifier 127 VALUE false Directional false ABOVE 1N4007 Rectifier 127 VALUE false Directional false BELOW 1N4007 J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false GND1 DEFAULT DEFAULT 127 NAME false Directional false ABOVE true 127 NAME false Directional false ABOVE false J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false 127 NAME false Directional false ABOVE false J1 127 NAME false false J1 127 NAME false false 127 NAME false Directional false ABOVE true J1 127 NAME false false J1 127 NAME false false ELL1 127 J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false Center Tap 127 VALUE false Directional false ABOVE HALF Center Tap 127 VALUE false Directional false ABOVE HALF J1 127 NAME false false J1 127 NAME false false Dot3 Dot3 J1 127 NAME false false J1 127 NAME false false ELL1 127 J1 127 NAME false false J1 127 NAME false false ELL2 127 J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false GND1 DEFAULT DEFAULT V2A Cathode 127 VALUE false Directional false ABOVE HALF V1A Grid Stopper 127 VALUE false Directional false ABOVE HALF Bright 127 VALUE false Directional false ABOVE _63V false Bright Vol 127 VALUE false Directional false ABOVE HALF J1 127 NAME false false J1 127 NAME false false W1 127 TWO true -1 _30 false W1 127 TWO true -1 _30 false W1 127 TWO true -1 _30 false W1 127 TWO true -1 _30 false GND1 DEFAULT DEFAULT J1 127 NAME false false J1 127 NAME false false GND1 DEFAULT DEFAULT J1 127 NAME false false J1 127 NAME false false GND1 DEFAULT DEFAULT 127 NAME false Directional false ABOVE false GND1 DEFAULT DEFAULT GND1 DEFAULT DEFAULT V3 Grid Stopper 127 VALUE false Directional false ABOVE HALF J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false W1 127 TWO true -1 _30 false GND1 DEFAULT DEFAULT R8 Load 127 VALUE false Directional false ABOVE HALF GND1 DEFAULT DEFAULT W1 127 TWO true -1 _30 false GND1 DEFAULT DEFAULT W1 127 TWO true -1 _30 false GND1 DEFAULT DEFAULT Master Volume 127 VALUE false Directional false ABOVE HALF V2B 12AX7 12AX7 NAME false DEFAULT NONE false V2B Cathode 127 VALUE false Directional false ABOVE HALF W1 127 TWO true -1 _30 false W1 127 TWO true -1 _30 false GND1 DEFAULT DEFAULT W1 127 TWO true -1 _30 false Tone Stack Bass 127 VALUE false Directional false ABOVE _63V false Tone Stack Treble 127 VALUE false Directional false ABOVE _63V false Tone Slope 127 VALUE false Directional false BELOW HALF W1 127 TWO true -1 _30 false Treble Pot 127 VALUE false Directional false ABOVE HALF J1 127 NAME false false J1 127 NAME false false W1 127 TWO true -1 _30 false Bass Pot 127 VALUE false Directional false ABOVE HALF W1 127 TWO true -1 _30 false Tone Stack Mid 127 VALUE false Directional false ABOVE _63V false Mid Pot 127 VALUE false Directional false ABOVE HALF J1 127 NAME false false J1 127 NAME false false V2A Grid Stopper 127 VALUE false Directional false ABOVE HALF GND1 DEFAULT DEFAULT J1 127 NAME false false J1 127 NAME false false J1 127 NAME false false Dot4 V3A 12AU7* 12AT7 NAME false DEFAULT NONE false W1 127 TWO true -1 _30 false 127 NAME false Directional false ABOVE true W1 127 TWO true -1 _30 false W1 127 TWO true -1 _30 false W1 127 TWO true -1 _30 false W1 127 TWO true -1 _30 false W1 127 TWO true -1 _30 false Coupling V1B 127 VALUE false Directional false ABOVE _63V false V1B 12AY7 12AY7 NAME false DEFAULT NONE false W1 127 TWO true -1 _30 false PI Cathode 127 VALUE false Directional false ABOVE HALF GND1 DEFAULT DEFAULT PI Grid Leak 127 VALUE false Directional false ABOVE HALF PI Cathode Load 127 VALUE false Directional false ABOVE HALF Dot4 V3B 12AU7* 12AU7 NAME false DEFAULT NONE false PI Plate Load 127 VALUE false Directional false ABOVE HALF V3 Cathode 127 VALUE false Directional false ABOVE HALF GND1 DEFAULT DEFAULT W1 127 TWO true -1 _30 false W1 127 TWO true -1 _30 false 0.47R/2W 127 NAME false Directional false ABOVE HALF B+1 Filter Cap 127 VALUE false Directional false ABOVE _63V false B+2 Filter Cap 127 VALUE false Directional false ABOVE _63V false GND1 DEFAULT DEFAULT GND1 DEFAULT DEFAULT J1 127 NAME false false GND1 DEFAULT DEFAULT GND1 DEFAULT DEFAULT V3A Grid Leak 127 VALUE false Directional false ABOVE HALF V3B Grid Leak 127 VALUE false Directional false ABOVE HALF W1 127 TWO true -1 _30 false Coupling V3B 127 VALUE false Directional false ABOVE _63V false W1 127 TWO true -1 _30 false Coupling V3A 127 VALUE false Directional false ABOVE _63V false W1 127 TWO true -1 _30 false W1 127 TWO true -1 _30 false W1 127 TWO true -1 _30 false W1 127 TWO true -1 _30 false W1 127 TWO true -1 _30 false W1 127 TWO true -1 _30 false W1 127 TWO true -1 _30 false W1 127 TWO true -1 _30 false W1 127 TWO true -1 _30 false GND1 DEFAULT DEFAULT W1 127 TWO true -1 _30 false 127 NAME false Directional false ABOVE true Rectifier 127 VALUE false Directional false BELOW 1N4007 Rectifier 127 VALUE false Directional false ABOVE 1N4007 J1 127 NAME false false J1 127 NAME false false W1 127 TWO true -1 _30 false Dot1 Dot1 Dot1 Dot1 Dot1 Dot1 Dot1 Dot1 Dot1 W1 127 TWO true -1 _30 false W1 127 TWO true -1 _30 false W1 127 TWO true -1 _30 false B+2 Filter Cap 127 VALUE false Directional false ABOVE _63V false GND1 DEFAULT DEFAULT GND1 DEFAULT DEFAULT J1 127 NAME false false V2A Grid Stopper 127 VALUE false Directional false ABOVE HALF L1 B+2 false CENTER CENTER DEFAULT L2 Preamp false LEFT CENTER DEFAULT L2 Power Transformer false CENTER CENTER DEFAULT L2 6.3v Filament false CENTER CENTER DEFAULT L2 Rectifier false CENTER CENTER DEFAULT L2 Fuse 1A false CENTER CENTER DEFAULT L2 Slow Blow false CENTER CENTER DEFAULT L2 Power false LEFT CENTER DEFAULT L2 Hot Black false CENTER CENTER DEFAULT L2 Neutral White false CENTER CENTER DEFAULT L2 Hot false CENTER CENTER DEFAULT L2 Neutral false CENTER CENTER DEFAULT L2 Artificial Center Tap (required for 270AX with no 6.3v center tap) false LEFT CENTER DEFAULT L2 5F6A-M "Bassman Micro" Schematic false CENTER CENTER DEFAULT L2 V3.4 designed by Rob Robinette false RIGHT CENTER DEFAULT L2 Power Plug false CENTER CENTER DEFAULT L2 Safety Ground Green false LEFT CENTER DEFAULT L2 240-0-240V false CENTER CENTER DEFAULT L1 B+2 false CENTER CENTER DEFAULT L2 Preamp false RIGHT CENTER DEFAULT L2 Input Jack false LEFT CENTER DEFAULT L2 Bright Hi false LEFT BOTTOM DEFAULT L1 Input Resistor false CENTER CENTER _270 L1 Volume false CENTER BOTTOM _270 L1 Bypass Cap false CENTER CENTER _270 L1 Cathode Resistor false CENTER CENTER _270 L1 Cathode Resistor false CENTER BOTTOM _270 L1 Load false LEFT BOTTOM _270 L1 Load false LEFT CENTER _270 L1 Grid Stopper false LEFT BOTTOM DEFAULT L1 Coupling false LEFT CENTER DEFAULT L1 2 false CENTER TOP DEFAULT L1 1 false LEFT TOP DEFAULT L1 3 false RIGHT TOP DEFAULT L1 1 false LEFT TOP DEFAULT L1 2 false CENTER TOP DEFAULT L1 3 false RIGHT TOP DEFAULT L2 Switch false LEFT CENTER DEFAULT L2 PT Hammond 270AX 240-0-240V false LEFT CENTER DEFAULT L2 OT Hammond 125B false LEFT CENTER DEFAULT L1 B+1 false CENTER BOTTOM DEFAULT L2 Output false CENTER CENTER DEFAULT L2 Transformer false CENTER CENTER DEFAULT L2 Speaker Jack false LEFT CENTER DEFAULT L2 TRS Headphone Jack false LEFT CENTER DEFAULT L1 Master Volume false LEFT TOP DEFAULT L1 Grid Stopper false LEFT CENTER DEFAULT L2 Buffer false LEFT CENTER DEFAULT L1 B+2 false CENTER CENTER DEFAULT L1 Cathode Resistor false CENTER BOTTOM _270 L1 Mica Brite Cap false LEFT CENTER DEFAULT L1 6 false LEFT TOP DEFAULT L1 7 false CENTER TOP DEFAULT L1 8 false RIGHT TOP DEFAULT L1 Treble false LEFT TOP DEFAULT L1 Bass false RIGHT TOP DEFAULT L1 Mid false LEFT TOP DEFAULT L2 Tone Stack false LEFT TOP DEFAULT L1 Mica false LEFT CENTER DEFAULT L1 Grid Stopper false LEFT CENTER DEFAULT L1 Tone Bypass (Raw) Switch false LEFT CENTER DEFAULT L2 8 Ohm false LEFT CENTER DEFAULT L1 1 false LEFT TOP DEFAULT L1 2 false CENTER TOP DEFAULT L1 3 false RIGHT TOP DEFAULT L1 B+1 false CENTER CENTER DEFAULT L1 Coupling false CENTER CENTER DEFAULT L1 6 false LEFT TOP DEFAULT L1 8 false RIGHT TOP DEFAULT L1 7 false CENTER TOP DEFAULT L1 Load false LEFT BOTTOM _270 L1 Tail Load false LEFT CENTER _270 L1 Grid Leak false CENTER CENTER _270 L1 Cathode false CENTER CENTER _270 L1 B+2 false CENTER CENTER DEFAULT L1 6 false LEFT TOP DEFAULT L1 8 false RIGHT TOP DEFAULT L1 7 false CENTER TOP DEFAULT L1 Cathode Resistor false CENTER CENTER _270 L1 Shared false CENTER TOP DEFAULT L1 With V3B false CENTER TOP DEFAULT L1 B+1 300v false CENTER CENTER DEFAULT L1 155H 5H Choke false CENTER BOTTOM DEFAULT L1 Filter Cap false CENTER CENTER _270 L1 Filter Cap false CENTER CENTER _270 L1 B+ 300V false CENTER BOTTOM DEFAULT L2 PI false LEFT CENTER DEFAULT L2 Power false LEFT CENTER DEFAULT L2 *12BH7 in V3 for 30% more power false LEFT CENTER DEFAULT L2 Heater Dropping if needed false LEFT CENTER DEFAULT L1 Coupling false CENTER CENTER DEFAULT L1 Coupling false CENTER CENTER DEFAULT L2 *12AX7 in V1 for Marshall JTM45 Micro false LEFT CENTER DEFAULT L2 US Power Plug: Narrow prong is Hot & Black; Wide prong is Neutral & White false LEFT BOTTOM DEFAULT L2 Choke 5 Henry Hammond 155H false LEFT CENTER DEFAULT L1 Tip false CENTER BOTTOM DEFAULT L1 Ring false CENTER BOTTOM DEFAULT L1 Sleeve false LEFT BOTTOM DEFAULT L1 Grid Leak false CENTER BOTTOM _270 L1 Grid Leak false CENTER CENTER _270 L1 B+2 295v false CENTER CENTER DEFAULT L1 Filter Cap false CENTER CENTER _270 L1 Hammond false CENTER BOTTOM DEFAULT L1 Dropping 2W false CENTER CENTER DEFAULT L2 With Cathodyne PI & Push-Pull Power Amp false CENTER TOP DEFAULT L2 To Power Tube Cathode Resistor false LEFT CENTER DEFAULT Normal Chan Load 127 VALUE false Directional false ABOVE HALF GND2 DEFAULT DEFAULT L53 Normal Chan Load false CENTER BOTTOM _270