BOSE MA12EX Service Manual

Panaray® MA12EX Modular Line Array

Loudspeaker System

Service Manual

Reference Number 317302-SM Rev. 00

Electronic Copy Only

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 T ransformer 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

CAUTION: The Bose

contains no user-serviceable parts. To prevent warranty infractions,

refer servicing to warranty service stations or factory service.

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.

Panaray MA12EX Modular Line Array Loudspeaker System

PROPRIETARY INFORMATION

Warranty

The Bose Panaray MA12EX Modular Line Array Loudspeaker System is covered by a 5-year transferable limited warranty.

Specifications

Description Part Number

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

Product Description

The Bose 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.

Panaray® MA12EX Modular Line Array Loudspeaker System is a modular system

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

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

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.

Packaging Part List

Item

Description Bose® Part

Vendor Part Number Qty. Note

Panaray® MA12EX Loudspeaker System (see Figure 1)

Number

1 CARTON 317410-000S 2 PACKING END CAP,

ARRAY

3 PACKING CENTER,

ARRAY

4 MA12EX SYSTEM

BLACK WHITE

5 POLY BAG,

1350x240x0.05MM

Number

318051-000S 318052-000S

317302-0100 317302-0200

145B-4090+0 1 1491-7441+0 2

1491-7431+0 2

BSSPTENOR+07CS11 BSSPTENOR+07CS12

- 1497-7592+0 1 4

Figure 1. Panaray MA12EX Loudspeaker Packaging View

Packaging Part List

Item

Description Bose® Part

Vendor Part

Qty. Note

Panaray® MA12EX Transformer Accessory (see Figure 2)

Number

1 XFMR CARTON, INNER 319178-000S 1438-6801+0-1 1 2 XFMR PACKING, BOTTOM 319179-000S 1493-2071 1 3 XFMR PACKING, TOP 318303-000S 1493-2061 1 4 POLY BAG, 80x60x0.06MM - 1497-7502+0 1 5 SCREW, SS, M6x12, HEX

SOCKET

6 XFMR MTG BRACKET, BLACK 317445-010S 4135-8841 1

XFMR MTG BRACKET, WHITE 317445-020S 4135-8842 7 POLY BAG, 300x100MM - 1497-0082+0 1 8 CARTON SHEET, 250x200MM - 1451-0280+0 2 9 CARTON SHEET, 530x300MM - 1451-0290+0 2

10 POLY BAG, 360x360MM - 1497-1542+1 1 11 XFMR CARTON, K=A,

850x535x310MM

Number

- 2908-

318302-000S 1438-6901+0-2 1

Number

6012+D400

Figure 2. Panaray

MA12EX 70/100V Transformer Accessory Packing View

+ 9 hidden pages