Contents - Bose Panaray 502A Service Manual

502B CSB-5B Suspension Bracket Kit Parts List (see Figure 21) ..............................................48
Figure 21. CSB-5B Suspension Bracket Kit ...................................................................................48
502A WBP-5 Bi-Pivot Bracket Kit Parts List (see Figure 22) .......................................................49
Figure 22. WBP-5 Bi-Pivot Bracket Kit ...........................................................................................49
502A WCB-5 U-Bracket Kit Parts List (see Figure 23) .................................................................50
Figure 23. WCB-5 U-Bracket Kit ....................................................................................................50
502A CVT-5 Transformer Assembly Kit Parts List (Figure 24) ....................................................51
Figure 24. CVT-5 Exploded View and Packaging ...........................................................................51
Figure 25. CVT-5 Schematic ..........................................................................................................52
Theory of Operation .................................................................................................................. 53-55
502C Controller ...............................................................................................................................53
1. Differential Input Stage ...............................................................................................................53
2. Equalizer for High Frequency Outputs .....................................................................................53
3. Output mode switch, Low frequency level control, and Normal/Sum mode stage ..............53
4. Equalizer for Low Frequency Outputs ......................................................................................53
5. Mode switch ................................................................................................................................53
6. Output stage ................................................................................................................................54
7. Power Supply ..............................................................................................................................54
8. Turn On/Off Muting Circuit .........................................................................................................54
9. Troubleshooting Tips ............................................................................................................ 54-55
502C Controller EQ Curves ...................................................................................................... 56-61
Figure 26. Low Frequency EQ ........................................................................................................56
Figure 27. Low Frequency EQ ........................................................................................................56
Figure 28. Low Frequency EQ ........................................................................................................57
Figure 29. Low Frequency EQ ........................................................................................................57
Figure 30. High Frequency EQ .......................................................................................................58
Figure 31. High Frequency EQ .......................................................................................................58
Figure 32. High Frequency EQ .......................................................................................................59
Figure 33. High Frequency EQ .......................................................................................................59
Figure 34. High Frequency EQ .......................................................................................................60
Figure 35. High Frequency EQ .......................................................................................................60
Figure 36. High Frequency EQ .......................................................................................................61
Figure 37. 502C Controller Block Diagram .....................................................................................62
Service Manual Revision History ...................................................................................................63

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