Bose ma12ex loudspeaker service manual rev 00
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2 CAUTION: The Bose ® Panaray MA12EX Modular Line Array Loudspeaker System 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. The Bose Panaray MA12EX Modular Line Array Loudspeaker System is covered by a 5-year transferable limited warranty. Warranty Contents Warranty ............................................................................................................................................. 2 Specifications .................................................................................................................................... 3 Product Description .......................................................................................................................... 3 Accessories Used with the MA12EX Loudspeaker System .......................................................... 3 Part List Notes ................................................................................................................................... 3 Packaging Part List, Panaray ® MA12EX Loudspeaker System (see Figure 1) ............................ 4 Figure 1. Panaray MA12EX Loudspeaker Packaging View ............................................................. 4 Packaging Part List, Panaray MA12EX Transformer Accessory (see Figure 2) .......................... 5 Figure 2. Panaray MA12EX 70/100V Transformer Accessory Packing View ...................................5 Main Part List, Panaray MA12EX Loudspeaker System (see Figure 3) ........................................ 6 Figure 3. Panaray MA12EX Loudspeaker System Exploded View ..................................................7 Main Part List, Panaray CVT-MA12EX Transformer Accessory (see Figure 4) ............................ 8 Figure 4. Panaray CVT-MA12EX 70/100V Transformer Accessory Exploded View .........................8 Disassembly Procedures ........................................................................................................... 9-10 MA12EX Loudspeaker ...................................................................................................................... 9 CVT-MA12EX Transformer Accessory ........................................................................................... 10 Test Procedures .............................................................................................................................. 11 Figure 5. Panaray MA12EX Test Setup Diagram ...........................................................................11 Figure 6. Panaray MA12EX Loudspeaker Wiring Diagram ............................................................12 Service Manual Revision History ................................................................................................... 13
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3 Specifications External Dimensions: 38.75 x 4.125 x 5.5 in. (978 x 107 x 130 mm) Weight:Single Speaker: 21.5 lb. (10 kg) Packed System: 24 lb. (11 kg) Sensitivity: 87dB SPL, 75 Hz - 15 kHz (1W/1m free space) System Protection: None Impedance: 8 Ohms nominal, 7.5 Ohms minimum Power Handling: 150 Watts continuous per IEC-268-5, 75 Hz high pass, 96 hours. Recommended amplifier power 150-300 Watts The Bose ® Panaray ® MA12EX Modular Line Array Loudspeaker System is a modular system used for full range sound reproduction. It is a vented enclosure design using 12 full range 2.25 drivers housed in a closely spaced line. The loudspeaker provides a means for mechanical attachment of two units to form a rigid single line source by using the CB-MA12EX coupling bracket (see table below). Each loudspeaker has two Neutrik ® connectors and two barrier style terminals so that multiple units can be connected as a system in series and parallel. The Bose Panaray MA12EX Loudspeaker can be used with the Bose Panaray MB4 Modular Bass Loudspeaker for dynamic full range reproduction. Accessories Used with the MA12EX Loudspeaker System Part List Notes 1. This part is not normally available from Customer Service. Approval from the Field Service Manager is required before ordering. 2. The individual parts located on the PCBs are listed in the Electrical Part List. 3. This part is critical for safety purposes. Failure to use a substitute replacement with the same safety characteristics as the recommended replacement part might create shock, fire and/or other hazards. 4. This part is referenced for informational purposes only. It is not stocked as a repair part. Refer to the next higher assembly for a replacement part. Description Part Number CVT-MA12EX, TRANSFORMER, 70/100V, BLACK 315338-0100 CVT-MA12EX, TRANSFORMER, 70/100V, WHITE 315338-0200 CB-MA12EX, COUPLING BRACKET, BLACK 317088-0100 CB-MA12EX, COUPLING BRACKET, WHITE 317088-0200 WMB2-MA12/MA12EX PITCH LOCK UPPER BRACKET, BLACK 318337-0100 WMB2-MA12/MA12EX PITCH LOCK UPPER BRACKET, WHITE 318337-0200 WMB-MA12/MA12EX, BI-PIVOT BRACKET, BLACK 318338-0100 WMB-MA12/MA12EX, BI-PIVOT BRACKET, WHITE 318338-0200 WB- MA12/MA12EX, PITCH ONLY BRACKET, BLACK 318418-0100 WB- MA12/MA12EX, PITCH ONLY BRACKET, WHITE 318418-0200 Product Description