Audio research d 76a schematic

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0 76 FIELD SETUP AND CHECKOUT

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LEn CNANNEL snoww Imam CHANNEL was PIN NUMBERS

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D -75A FIELD SETUP AND CHECKOUT

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U.S. PATENT NO:3,538,447

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PROPRIETARY NOTICE
THIS PRINT CONTAINS PATENTED AND/OR OTHER
INFORMATION CONSIDERED PROPRIETARY EV
AUDIO RESEARCH CORPORATION AND IS FURNISHED
ON A CONFIDENTIAL BASIS FOR IDENTIFICATION
PURPOSES ONLY.

AUDIO RESEARCH CORPORATION

MINNEAPOLIS, MINNESOTA

(5 - IF WITHOUT DISTORTION MEASURING EQUIPMENT,SET ALL 4 OUTPUT TUBES T0 55MA EACH AFTER 30 MINUTE WARMUP)

2- SET BIAS TO MIN.THD AT 75WI AT IKHZ (5O60MAI IDLE FER TUBE OR NOMA 55MAI.

3-SET DC EALTU EQUAL IDLE CURRENTS PER TUBE.
4-SET AC BALTO MIN.THD AT 75W AT IKHXI< .|"/o,.05 T0A07 NOMJV

I- ALLOW I5 MINUTE WARMUP.

SCHEMATIC
D-76A AMPLIFIER

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