Bose 300 pm service manual supplement details crossover ptc part number changes s2
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Page 1
SUPPLEMENT The following parts used in the Model 300PM Loudspeaker PTC/lamp passive crossover assembly have changed. Be sure to use the correct part as listed in the table below when replacing the polyswitches in the crossover assembly. Refer to the Model 300PM Loudspeaker service manual, Bose ¨ part numbers 193626-S1 for all disassembly/assembly and test procedures. (2X) (4X) M M L1 PTC2 C1 DS1, DS2 PTC1 FOIL TAPE 1 2 3 4 5 6 7 8 9 10 11 12 RED YELLOW BLUE BLACK GREEN BLUE Model 300PM Loudspeaker PTC/Lamp Passive Crossover Assembly Layout Diagram Ref. Des.Item NumberDescription Old Part NumberNew Part NumberQty per Assy. PTC2 2Polyswitch, 60V, 4mm 191995-1 190348-040 1 PTC1 3Polyswitch, 60V, 4mm 191996-1 190348-090 1