PREMIUM QUALITY! THE SEEBURG SHP AMPLIFIERS OPERATION AND TROUBLESHOOTING 56 PAGE GUIDE IN ENGLISH LANGUAGE. GREAT FOR WORKING ON THESE POPULAR AMPLIFIERS USED IN 1000'S OF SEEBURG JUKEBOXES. SCHEMATICS, SEMICONDUCTOR. COVERS PRE-AMP, SQUELCH/AVC, DRIVER/OUTPUT STAGE, SOS CIRCUIT, CIRCUITRY, TROUBLESHOOTING, CHASSIS PHOTOS, CIRCUIT BOARD VIEWS CROSS REFERENCE. 
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