Bose 500 pm supplement details crossover assembly ptc part number changes s1
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Page 1
SUPPLEMENT
JUSE
Better sound through research®
Model 500PM Loudspeaker
The following parts used in the Model 500PM Loudspeaker SmartProtect 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 500PM Loudspeaker service manual, Bose part number 197275 for all
disassembly/assembly and test procedures.
R11 R4 R7 D4 R2
ECN: 25008
Date Issued: 2/99
" D6 R5 R305R11 0 09011
J©§D¢Dflflflflflggmflmjfl QGQ
Reference Description Old Part New Part Qty per
Designator Number Number Assy.
PTC1 Polyswitch, 60V, 4mm 190348-1 190348-025 1
PTCZ Polyswitch, 60V, 4mm 1919954 190348-040 1
PTCS Polyswitch, 60V, 4mm 191995-1 190348-040 1
(21
Cl 0201 R1 JPICA PTC1
668 won:
I] Hi U mm H] 10... O ..
R19 R20 M +13
mul-um R10 -5_|R17 T, I
03 R14 c:1| on R6011) R21 612 M D
U 'CT I
HUD; WDUEé - m.
M R13 R15 E08 07 Oprcz El
11 1391MA PT03
2 TECH -
©1999 Bose Corporation
Supplement
Part Number 197275-81 Rev. 00