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THE AMP
GARAGE
12AX7
SKYLINER EQ
12AX7
EL84
BR1BR156WA74
POTENTIOMETER PINOUT
MT's MINI HRM101HRM PREAMP + AX84 SE HI OCTANE POWERAMPDRAWN BY COLOSSAL
BUILD NOTES:1) ROCK/JAZZ SWITCH HAS BEEN OMITTED2) ALL pF CAPS ARE CERAMIC3) POTS SHOULD READ AS STATED VALUES4) PLATE RESISTORS ARE TYPICALLY VISHAY/DALE RN65 1/2W METAL FILM5) TONE AND COUPLING CAPS ARE TYPICALLY SBE 6PS SERIES, MALLORY PVC SERIES, OR SBE 225P SERIES POLYESTER FILM/FOIL6) 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
VR1250kA
MIDDLE
B+4259V
B+4259V
B+2261V
B+3261V
22µF350V
~180k
B+3261V
B+2261V
SE