4 15 1 RobRob Stereo Audio Amplifier Layout RobRobinette.com 12AX7 2x6V6GT Single Ended Amp 1 Output Transformer 62 20 Hammond 125CSE 8W _180 BOTH false false 1/4" Input Jack 127 STEREO _90 1/4" Cliff Jack TS 127 6 Lug Tagstrip DEFAULT 6 false TS 127 6 Lug Tagstrip DEFAULT 6 false TS 127 3 Lug Tagstrip _90 3 false TS 127 6 Lug Tagstrip DEFAULT 6 false TS 127 6 Lug Tagstrip DEFAULT 6 false TS 127 6 Lug Tagstrip DEFAULT 6 false TS 127 6 Lug Tagstrip DEFAULT 6 false TS 127 3 Lug Tagstrip _90 3 false TS 127 6 Lug Tagstrip DEFAULT 6 false TS 127 6 Lug Tagstrip DEFAULT 6 false Eyelet1 Chassis Safety Bolt Eyelet2 Chassis Ground Bolt Eyelet1 Chassis Grommet Eyelet1 Chassis Grommet Eyelet1 Chassis Grommet Eyelet1 Chassis Grommet Eyelet1 Chassis Grommet Eyelet2 Chassis Ground Bolt Volume 127 20 DEFAULT LOG ThroughHole false ShaftDown Power Transformer 62 20 Hammond 290ABX _90 BOTH false false Choke 50 20 Hammond 194E 30H 100ma DEFAULT BOTH false false Output Transformer 62 20 Hammond 125CSE 8W DEFAULT BOTH false false V2 127 B9A 12AX7 Tube & Socket 320 1,2,3,4,5,6,7,8,9 CHASSIS V4 127 OCTAL 6V6GT Tube & Socket 45 n/c,H,P,S,G,n/c,H,C CHASSIS V3 127 OCTAL 6V6GT Tube & Socket 45 n/c,H,P,S,G,n/c,H,C CHASSIS 127 IEC Socket DEFAULT PL1 127 DEFAULT 0 Right Speaker - 127 Left Speaker + 127 Left Speaker + 127 Right Speaker - 127 Power DPST Carling 127 SPST VERTICAL Power DPST Carling 127 SPST VERTICAL Volume 127 20 DEFAULT LOG ThroughHole false ShaftDown W1 127 FOUR true -1 _22 false C3 0.047uF 630V 127 NAME false Directional false false _63V false R8 470K 127 NAME false Directional false false HALF _5_BAND Standard W1 127 FOUR true -1 _20 false L2 Chassis Ground
false
CENTER CENTER DEFAULT
W1 127 FOUR true -1 _28 false W1 127 FOUR true -1 _20 false W1 127 FOUR true -1 _20 false W1 127 FOUR true -1 _28 false W1 127 FOUR true -1 _28 false RG174 127 FOUR true -1 _18 false L2 Power DPST
false
CENTER CENTER DEFAULT
L2 Output Left
false
CENTER CENTER DEFAULT
L2 Output Right
false
CENTER CENTER DEFAULT
L2 NFB
false
LEFT CENTER DEFAULT
L2 RG174
false
LEFT CENTER DEFAULT
L2 +
false
CENTER CENTER DEFAULT
L2 +
false
CENTER CENTER DEFAULT
W1 127 FOUR true -1 _28 false W1 127 FOUR true -1 _18 false W1 127 FOUR true -1 _18 false W1 127 FOUR true -1 _18 false W1 127 FOUR true -1 _18 false W2 127 FOUR true -1 _18 false false L2 NFB
false
LEFT CENTER DEFAULT
L2 RG174
false
LEFT CENTER DEFAULT
L2 Hot
false
CENTER CENTER DEFAULT
L2 Safety
false
CENTER CENTER DEFAULT
W2 127 FOUR true -1 _18 false false W1 127 FOUR true -1 _18 false W2 127 FOUR true -1 _18 false false Bridge Rectifier 100 20 BR-3 _180 + ~ ~ - VALUE SquareBR3 Horizontal W2 127 FOUR true -1 _18 false false W1 127 FOUR true -1 _20 false W1 127 FOUR true -1 _18 false W1 127 FOUR true -1 _18 false W2 127 FOUR true -1 _18 false false W1 127 FOUR true -1 _18 false W1 127 FOUR true -1 _18 false W1 127 FOUR true -1 _20 false C5 100uF 450V F&T 127 20 NAME false Directional false false _63V true W1 127 FOUR true -1 _20 false W1 127 FOUR true -1 _20 false W1 127 FOUR true -1 _20 false W1 127 FOUR true -1 _20 false W1 127 FOUR true -1 _26 false W1 127 FOUR true -1 _26 false C8 22uF 450V F&T 127 20 NAME false Directional false false _63V true C7 22uF 450V F&T 127 20 NAME false Directional false false _63V true R14 470K 127 NAME false Directional false false HALF _5_BAND Standard W1 127 FOUR true -1 _26 false W1 127 FOUR true -1 _26 false W1 127 FOUR true -1 _22 false GND1 DEFAULT DEFAULT GND1 DEFAULT DEFAULT GND1 DEFAULT DEFAULT GND1 DEFAULT DEFAULT W1 127 FOUR true -1 _20 false L2 Shown Wired For 120V Primary
false
CENTER CENTER DEFAULT
L2 2A Fuse
false
CENTER CENTER DEFAULT
L2 1W
false
CENTER CENTER DEFAULT
L2 Choke
false
CENTER CENTER _270
L2 B+
false
CENTER CENTER DEFAULT
L2 B+1
false
CENTER CENTER DEFAULT
L2 B+2
false
CENTER CENTER DEFAULT
L2 B+3
false
CENTER CENTER DEFAULT
W1 127 FOUR true -1 _26 false W1 127 FOUR true -1 _22 false W1 127 FOUR true -1 _22 false R8 470K 127 NAME false Directional false false HALF _5_BAND Standard R7 1K 127 NAME false Directional false false HALF _5_BAND Standard W1 127 FOUR true -1 _28 false W1 127 FOUR true -1 _28 false W1 127 FOUR true -1 _28 false W1 127 FOUR true -1 _28 false W1 127 FOUR true -1 _20 false W1 127 FOUR true -1 _20 false L2 8
false
CENTER CENTER DEFAULT
L2 Neutral
false
CENTER CENTER DEFAULT
L2 Alternative OT
false
CENTER CENTER DEFAULT
L2 125DSE 10W
false
CENTER CENTER DEFAULT
L2 Bridge
false
CENTER CENTER DEFAULT
L2 Rectifier
false
CENTER CENTER DEFAULT
L2 1
false
CENTER CENTER DEFAULT
L2 8
false
CENTER CENTER DEFAULT
W1 127 FOUR true -1 _22 false R6 100K 127 NAME false Directional false false HALF _5_BAND Standard L2 1W
false
CENTER CENTER DEFAULT
W1 127 FOUR true -1 _20 false W1 127 TWO true -1 _28 false W2 127 FOUR true -1 _20 false false L2 A RobRobinette.com Design V1.9a
false
RIGHT CENTER DEFAULT
L2 Pilot Light
false
CENTER CENTER DEFAULT
W1 127 FOUR true -1 _20 false W1 127 FOUR true -1 _20 false L2 Ground Bolt
false
CENTER CENTER DEFAULT
L2 HV
false
CENTER CENTER DEFAULT
L2 6.3V
false
CENTER CENTER DEFAULT
L2 I.E.C.
false
CENTER CENTER DEFAULT
W1 127 FOUR true -1 _20 false W1 127 FOUR true -1 _28 false L2 290V 100ma, 6.3V 5A
false
LEFT CENTER DEFAULT
L2 Output Transformer Hammond 125CSE 5K:8 Ohm 8W
false
LEFT CENTER DEFAULT
L2 Choke Hammond 194E
false
LEFT CENTER DEFAULT
L2 Power Transformer Hammond 290ABX
false
LEFT CENTER DEFAULT
L2 NFB
false
LEFT CENTER DEFAULT
L2 RG174
false
LEFT CENTER DEFAULT
L2 NFB
false
LEFT CENTER DEFAULT
L2 RG174
false
LEFT CENTER DEFAULT
L2 Do Not Twist
false
CENTER CENTER DEFAULT
L2 Do Not Twist
false
CENTER CENTER DEFAULT
L2 Do Not Twist
false
CENTER CENTER DEFAULT
L2 Do Not Twist
false
CENTER CENTER DEFAULT
L2 Resistors 1/2 Watt Unless Specified
false
LEFT CENTER DEFAULT
L2 Choke Is Mounted Above Filter Caps
false
LEFT CENTER DEFAULT
L2 B+3 Filter
false
CENTER CENTER DEFAULT
L2 B+2 Filter
false
CENTER CENTER DEFAULT
L2 B+ Filter
false
CENTER CENTER DEFAULT
L2 Grid Leak
false
CENTER CENTER DEFAULT
L2 Grid Stop
false
CENTER CENTER DEFAULT
L2 Plate Load
false
CENTER CENTER DEFAULT
L2 Coupling
false
CENTER CENTER DEFAULT
L2 Dropping
false
CENTER CENTER _270
L2 Dropping
false
CENTER CENTER _270
L2 Grid Leak
false
CENTER CENTER DEFAULT
L2 1/4" Mono Switched Cliff Jacks
false
CENTER CENTER DEFAULT
W1 127 FOUR true -1 _22 false L2 Right
false
CENTER CENTER DEFAULT
L2 Left
false
CENTER CENTER DEFAULT
W1 127 FOUR true -1 _22 false R4 100K 127 NAME false Directional false false HALF _5_BAND Standard L2 1W
false
CENTER CENTER DEFAULT
C2 0.1uF 630V 127 NAME false Directional false false _63V false W1 127 FOUR true -1 _28 false W1 127 TWO true -1 _24 false W1 127 FOUR true -1 _22 false L2 Tip
false
LEFT CENTER DEFAULT
L2 Sleeve - Ground
false
LEFT CENTER DEFAULT
L2 Switch
false
CENTER CENTER DEFAULT
L2 Switch
false
CENTER CENTER DEFAULT
L2 Switch
false
CENTER CENTER DEFAULT
L2 Bleeder
false
CENTER CENTER DEFAULT
W1 127 FOUR true -1 _18 true C6 100uF 450V F&T 127 20 NAME false Directional false false _63V true W1 127 THREE true -1 _20 false W1 127 THREE true -1 _20 false L2 Screen
false
CENTER CENTER DEFAULT
L2 Use Yellow & Black
false
RIGHT CENTER DEFAULT
L2 Secondary Wires
false
RIGHT CENTER DEFAULT
L2 For 8 Ohms
false
RIGHT CENTER DEFAULT
L2 Coupling
false
CENTER CENTER DEFAULT
L2 For more info see https://robrobinette.com/RobRob_Stereo.htm
false
LEFT CENTER DEFAULT
L2 Edcore GSXE10-5K 10W
false
CENTER CENTER DEFAULT
L2 125BSE 5W
false
CENTER CENTER DEFAULT
L2 Alternative OT
false
CENTER CENTER DEFAULT
L2 125DSE 10W
false
CENTER CENTER DEFAULT
L2 Edcore GSXE10-5K 10W
false
CENTER CENTER DEFAULT
L2 125BSE 5W
false
CENTER CENTER DEFAULT
L2 Shell Ground
false
CENTER CENTER DEFAULT
L2 Transformer Bolt
false
CENTER CENTER DEFAULT
L2 RobRob Stereo Amp
false
CENTER CENTER DEFAULT
L2 Use Yellow & Black
false
LEFT CENTER DEFAULT
L2 Secondary Wires
false
LEFT CENTER DEFAULT
L2 For 8 Ohms
false
LEFT CENTER DEFAULT
L2 Plate Load
false
CENTER CENTER DEFAULT
L2 B+1 Filter
false
CENTER CENTER DEFAULT
L2 1
false
CENTER CENTER DEFAULT
RG174 127 FOUR true -1 _18 false W1 127 FOUR true -1 _20 false R12 2.2K 127 NAME false Directional false false HALF _5_BAND Standard L2 3W
false
CENTER CENTER DEFAULT
R7 1K 127 NAME false Directional false false HALF _5_BAND Standard W1 127 THREE true -1 _20 false W2 127 FOUR true -1 _20 false false W1 127 THREE true -1 _20 false L2 Grid Stop
false
CENTER CENTER DEFAULT
R10 470 127 NAME false Directional false false HALF _5_BAND Standard W1 127 THREE true -1 _20 false W1 127 THREE true -1 _20 false W1 127 FOUR true -1 _26 false W1 127 FOUR true -1 _22 false R13 8.2K 127 NAME false Directional false false HALF _5_BAND Standard W1 127 FOUR true -1 _22 false W1 127 THREE true -1 _20 false W1 127 THREE true -1 _20 false W2 127 FOUR true -1 _20 false false L2 V2 12AX7
false
CENTER CENTER DEFAULT
W1 127 FOUR true -1 _22 false W1 127 FOUR true -1 _20 false W1 127 FOUR true -1 _28 false C1 250uF 10V 127 NAME false Directional false false _63V true R3 1.5K 127 NAME false Directional false false HALF _5_BAND Standard W1 127 THREE true -1 _20 false W1 127 THREE true -1 _20 false L2 Cathode
false
CENTER CENTER DEFAULT
W1 127 FOUR true -1 _28 false V1 127 B9A 12AX7 Tube & Socket 320 1,2,3,4,5,6,7,8,9 CHASSIS C3 0.047uF 630V 127 NAME false Directional false false _63V false W1 127 FOUR true -1 _28 false R11 22K 127 NAME false Directional false false HALF _5_BAND Standard GND1 DEFAULT DEFAULT GND1 DEFAULT DEFAULT R6 100K 127 NAME false Directional false false HALF _5_BAND Standard W1 127 TWO true -1 _28 false W1 127 FOUR true -1 _28 false R4 100K 127 NAME false Directional false false HALF _5_BAND Standard C2 0.1uF 630V 127 NAME false Directional false false _63V false R5 1.5K 127 NAME false Directional false false HALF _5_BAND Standard W1 127 FOUR true -1 _28 false W1 127 TWO true -1 _28 false W1 127 FOUR true -1 _28 false W1 127 THREE true -1 _20 false W1 127 THREE true -1 _20 false W1 127 THREE true -1 _20 false W1 127 THREE true -1 _20 false W1 127 FOUR true -1 _22 false W1 127 FOUR true -1 _28 false C1 250uF 10V 127 NAME false Directional false false _63V true R3 1.5K 127 NAME false Directional false false HALF _5_BAND Standard W2 127 FOUR true -1 _20 false false L2 V3 6V6GT
false
CENTER CENTER DEFAULT
L2 HV 290V 100ma
false
LEFT CENTER DEFAULT
L2 6.3V 5A
false
RIGHT CENTER DEFAULT
L2 B+3
false
CENTER CENTER DEFAULT
L2 1W
false
CENTER CENTER DEFAULT
L2 Plate Load
false
CENTER CENTER DEFAULT
L2 Cathode
false
CENTER CENTER DEFAULT
L2 NFB
false
CENTER CENTER DEFAULT
L2 Coupling
false
CENTER CENTER DEFAULT
L2 1W
false
CENTER CENTER DEFAULT
L2 Coupling
false
CENTER CENTER DEFAULT
L2 Shield Grounded
false
LEFT CENTER DEFAULT
L2 Cathode
false
CENTER CENTER DEFAULT
1/4" input Jack 127 MONO _90 1/4" Cliff Jack W1 127 TWO true -1 _24 false L2 V1 12AX7
false
CENTER CENTER DEFAULT
L2 Sleeve - Ground
false
LEFT CENTER DEFAULT
L2 Right
false
CENTER CENTER DEFAULT
L2 Left
false
CENTER CENTER DEFAULT
W1 127 FOUR true -1 _22 false W1 127 FOUR true -1 _22 false W1 127 FOUR true -1 _22 false Hum Balance 127 20 _270 LIN ThroughHole false ShaftUp W1 127 FOUR true -1 _22 true W1 127 THREE true -1 _22 false W1 127 THREE true -1 _22 false L2 Shaft Up
false
CENTER CENTER DEFAULT
L2 No Exterior Access
false
CENTER CENTER DEFAULT
R10 470 127 NAME false Directional false false HALF _5_BAND Standard W1 127 FOUR true -1 _22 false W1 127 FOUR true -1 _22 false W1 127 FOUR true -1 _22 false R1 1M 127 NAME false Directional false false HALF _5_BAND Standard R1 1M 127 NAME false Directional false false HALF _5_BAND Standard W1 127 FOUR true -1 _22 false R2 33K 127 NAME false Directional false false HALF _5_BAND Standard W1 127 FOUR true -1 _22 false L2 Screen
false
CENTER CENTER DEFAULT
L2 V4 6V6GT
false
CENTER CENTER DEFAULT
L2 B+3
false
CENTER CENTER DEFAULT
L2 B+3
false
CENTER CENTER DEFAULT
L2 Plate Load
false
CENTER CENTER DEFAULT
L2 Grid Stop
false
CENTER CENTER DEFAULT
W1 127 FOUR true -1 _22 false R9 470 5W 127 NAME false Directional false false HALF _5_BAND Standard L2 Cathode
false
CENTER CENTER DEFAULT
C4 100uF 50V 127 NAME false Directional false false _63V true R2 33K 127 NAME false Directional false false HALF _5_BAND Standard R11 22K 127 NAME false Directional false false HALF _5_BAND Standard W1 127 TWO true -1 _28 false W1 127 FOUR true -1 _28 false L2 Grid Stop
false
CENTER CENTER DEFAULT
L2 NFB
false
CENTER CENTER DEFAULT
L2 Shield Grounded
false
LEFT CENTER DEFAULT
W1 127 FOUR true -1 _22 false R5 1.5K 127 NAME false Directional false false HALF _5_BAND Standard W1 127 FOUR true -1 _28 false L2 Cathode
false
CENTER CENTER DEFAULT
W1 127 FOUR true -1 _28 false W1 127 FOUR true -1 _22 false W1 127 FOUR true -1 _22 false L2 B+3
false
CENTER CENTER DEFAULT
L2 Ground Bus
false
CENTER CENTER _270
C4 100uF 50V 127 NAME false Directional false false _63V true L2 Cathode
false
CENTER CENTER DEFAULT
R9 470 5W 127 NAME false Directional false false HALF _5_BAND Standard GND1 DEFAULT DEFAULT GND1 DEFAULT DEFAULT L2 2W
false
CENTER CENTER DEFAULT
L2 Tip
false
LEFT CENTER DEFAULT
L2 Speaker Binding Posts Or Switchcraft 12A Jacks
false
CENTER CENTER DEFAULT
L2 Speaker Binding Posts Or Switchcraft 12A Jacks
false
CENTER CENTER DEFAULT
L2 NFB
false
LEFT CENTER DEFAULT
L2 RG174
false
LEFT CENTER DEFAULT
W1 127 THREE true -1 _20 false W1 127 THREE true -1 _20 false