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Bluetone Lead Baby Preamp schematics modified Marshall JCM800

Bluetone Lead Baby Preamp schematics modified Marshall JCM800. 12AX7. B. B. C. C. 22 uF. 12AX7. 100 kohm. 500 pF. Guitar input. 100 kohm. 22 nF. 100 kohm. 22 nF. Preamp out. 2,2 nF. T. 47 kohm. 250kohm. 10 kohm. 100 kohm. V. 470 kohm. V. 1 Mohm. 1 Mohm. 470 kohm.

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Bluetone Lead Baby Preamp schematics modified Marshall JCM800

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  1. Bluetone Lead Baby Preamp schematics modified Marshall JCM800 12AX7 B B C C 22 uF 12AX7 100 kohm 500 pF Guitar input 100 kohm 22 nF 100 kohm 22 nF Preamp out 2,2 nF T 47 kohm 250kohm 10 kohm 100 kohm V 470 kohm V 1 Mohm 1 Mohm 470 kohm 22 nF 1Mohm B 470 kohm 820 ohm 1 Mohm 2,7 kohm 1,2 kohm 1 uF 22 nF 680 nF M 25 kohm Harry Kneckt 31.7.2007

  2. Bluetone Lead Baby Power amp schematics 47 kohm Power tubes 2xECL86 4,7 kohm 10 nF PI 2xECL86 8,2 kohm 10 nF Power amp in OT Hammond 125E 1 Mohm 82 kohm 470 kohm 470 ohm B B A 470 kohm 22 kohm 1 Mohm 100 kohm 8,2 kohm 10 nF 100 nF Presence 5 kohm 123ohm 100 nF MV 1 Mohm Dual Gang 47 uF 4,7 kohm Harry Kneckt 31.7.2007

  3. Bluetone Lead Baby Power supply schematics 2x100 ohm Heaters 6,3 V AC 278 V 267 V PT 2x250V 100mA 6,3V 3A, 5V 2,1A 233 V C A B 5Y3 Standby switch 1 kohm 10 kohm 180 ohm 2x250VAC 230 V AC 22 uF 47 uF 47 uF 47F Fuse 0,5 A Harry Kneckt 31.7.2007

  4. Bluetone Lead Baby Voltage chart Preamp V1(12AX7) 1= 175 V 3= 1,52 V 6= 145 V 8= 1,06 V V2(12AX7) 1 = 130V 3 = 0,95V 6 = 247 V 8 = 132 V Power amp V1(ECL86) 2= 57 V 3 = 252 V 6 = 273 V 7 = 7,5 V 9= 187 V V2(ECL86) 2 = 57 V 3 = 255 V 6 = 273 V 7= 7,5 V 9 = 174 V Harry Kneckt 31.7.2007

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