Bose SM-1 Bedienungsanleitung

®®©1998 Bose CorporationService Manual

10TEST PROCEDURE1. Rub and Tick Test1.1 Apply a 10 Hz, 25 Volts rms signal(with the use of an amplifier) to the speakerterminals. Refer to Figure 8.

11TEST PROCEDUREFrequency Response TableFrequency Below 40SwitchTrebleDecreaseSwitchTrebleContourResponsedB901 IResponsedB901 IITolerancedB20 Hz OFF O

12PART LIST901 Speaker Part ListItem NumberDescription Part NumberNote--- Driver 103342 4--- Grille, Front 103514-03 4--- Grille, Rear 103512-03 4--

13Figure 9. 901 I Schematic Diagram

14Figure 10. 901 II Schematic Diagram

Figure 11. 901 Schematic Diagram (first production run)15

2 PROPRIETARY INFORMATIONTHIS DOCUMENT CONTAINS PROPRIETARY INFORMATION OFBOSE® CORPORATION WHICH IS BEING FURNISHED ONLY

3CAUTION: THE BOSE® 901 I and II EQUALIZERS CONTAIN NO USER-SERVICEABLEPARTS. TO PREVENT WARRANTY INFRACTIONS, REFER SERVICE TO WARRANTYSERVICE STATI

4SPECIFICATIONS901 Series I and II SpeakerDimensions: 20-9/16" W x 12-3/4" H x 12-7/8" DWeight: 33 lbsNominal Impedance: 8 ohmsPercenta

5TECHNICAL DESCRIPTIONThe Bose® 901 speakers represent a fundamental advance in realistic home music reproduc-tion. The unique acoustic design of the

6TECHNICAL DESCRIPTIONFigure 1. Equalizer Controls Response Charts

DISASSEMBLE/ASSEMBLY PROCEDURE901 Speaker Disassembly/Assembly1. Grille Removal1.1 Locate the staples that secure the frontor rear grille assembly.

8DISASSEMBLE/ASSEMBLY PROCEDURE901 EQ Disassembly/Assembly5. PCB Removal5.1 Perform procedure 1.5.2 Remove the four screws that securethe PCB to the

9901 I EQ901 II EQFigure 5. Top CoverFigure 6. Front Panel AssemblyFigure 7. Indicator Lens Assembly