Bose 300 pm manual

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CAUTION: THE MODEL 300PM LOUDSPEAKER CONTAINS NO USER-SERVICEABLE PARTS. TO PREVENT WARRANTY INFRACTIONS, REFER SERVICING TO WARRANTY SERVICE STATIONS OR FACTORY SERVICE. PROPRIETARY INFORMATION THIS DOCUMENT CONTAINS PROPRIETARY INFORMATION OF BOSE ¨ CORPORATION WHICH IS BEING FURNISHED ONLY FOR THE PURPOSE OF SERVICING THE IDENTIFIED BOSE PRODUCT BY AN AUTHORIZED BOSE SERVICE CENTER OR OWNER OF THE BOSE PRODUCT, AND SHALL NOT BE REPRODUCED OR USED FOR ANY OTHER PURPOSE. CONTENTS Specifications ............................. 3 SmartProtect Crossover PCB operation and troubleshooting ....... 4 Disassembly/Assembly procedures ................. 5-6 Test procedures ......................... 7 Figure 1. Model 300PM Loudspeaker test setup diagram .............7 Figure 2. Model 300PM Loudspeaker driver wiring diagram ...............8 Figure 3. Model 300PM Loudspeaker schematic diagram .................9 Figure 4. Model 300PM Loudspeaker Crossover Assembly top side etch layout diagram ...10 Figure 5. Model 300PM Loudspeaker Crossover Assembly bottom side etch layout ....11 Model 300PM Loudspeaker crossover assembly part list (per figures 4&5) .. 12 Model 300PM Loudspeaker part list (per figure 6) ............... 13 Figure 6. Model 300PM Loudspeaker exploded view .....................13 Model 300PM Loudspeaker packing part list (per figure 7) ............... 14 Figure 7. Model 300PM Loudspeaker packing diagram ..................14 Model 300PM Loudspeaker Accessories ........................ 15 Figure 8. CB-22 bracket .........................................15 Figure 9. GBB-1 bracket ......................................15 Figure 10. GWS-200 bracket .......................................15

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3 SPECIFICATIONS External Dimensions:12.83"L x 8.43"D x 7.25"H (32.6cm x 21.4cm x 18.42cm) Internal Cabinet Volume:5.7 Liters (347 cu.in.) net Sensitivity (1W, 1m):83.8dB SPL (calculated), free field, per IEC-268-5 (for octave- band centered at 400Hz). SmartProtect Circuit characteristics: Turn-on voltage of the transistors of the electronic switch: 1.5-1.8 Vrms Turn-on level rise: 2-6 dB On resistance: <0.33W Maximum audio voltage applied to speaker: 60 Vrms Maximum continuous sinusoidal current: 3.4 Arms ±15% Reset Time: 250-300 ms Port (each side):Flared slot port tuned to 60Hz. Impedance:6W Nominal, 4.8W minimum from 20Hz to 20kHz. Power Handling:100W (24.5 Vrms) continuous 600W peak power handling w/SmartProtect circuit Weight:12.5 lb (5.7 kg) each Shipping Weight:28 lb (12.7 kg) per packed pair