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THE AMP GARAGE 12AX7 SKYLINER EQ 12AX7 EL84 BR1 BR156WA74 POTENTIOMETER PINOUT MT's MINI HRM 101HRM PREAMP + AX84 SE HI OCT ANE POWERAMP DRAWN BY COLOSSAL BUILD NOTES: 1) ROCK/JAZZ SWITCH HAS BEEN OMITTED 2) ALL pF CAPS ARE CERAMIC 3) POTS SHOULD READ AS STATED VALUES 4) PLATE RESISTORS ARE TYPICALLY VISHAY/DALE RN65 1/2W METAL FILM 5) TONE AND COUPLING CAPS ARE TYPICALLY SBE 6PS SERIES, MALLORY PVC SERIES, OR SBE 225P SERIES POLYESTER FILM/FOIL 6) HRM BASS TRIMMER (TRIM3) IS NORMALLY 1MA HOWEVER 500kB RESULTS IN BETTER CONTROL (PER CHRISM) 7) COMPONENTS SHOWN IN RED INDICATE VALUES ADDED OR CHANGED FROM EITHER THE REV 1.4 HRM OR AX84 HI OCTANE SCHEMATICS. CREDIT: 101HRM SCHEMATIC BASED ON 1/27/2006 REV 1.4 AND THE WORK OF H.A.D., BOB I, BOBW, DOGEARS, HEISTHL, GIL, NORM, SKYBOLTONE, AND OTHERS AT THE AMPGARAGE FORUM ORIGINAL MINI HRM AMP BY MAT AND HI GAIN HRM BOARD PASSIVE FX LOOP VR1 250kA MIDDLE B+4 259V B+4 259V B+2 261V B+3 261V 22µF 350V ~180k B+3 261V B+2 261V SE
