Bose 802 Series II Loudspeaker

General Description

The Bose 802 Series II sound components provide a fully modular system designed for high quality reinforcement of voice and music. Bose 802 Series II loudspeakers work with the 802C Series II systems controller for active equalization of the system. The 802 Series II loudspeaker is preferred for applications requiring a rugged, portable enclosure, but can be used in permanent indoor sound system installations. The 802C Series II systems controller assures smooth, accurate spectral response across the entire operating range of the 802 Series II loudspeaker. Sharp subsonic and ultrasonic band-limiting filters reduce power waste, stage noise, high-frequency instability, and interference. The systems controller also provides two independent signal channels.
Modular components for system design flexibility High linear excursion and power output Electronic systems controller

Technical Information

Frequency range 55Hz 16kHz Active equalization (with 802C Series II systems controller) Required Nominal impedance 8 Maximum acoustic output 114dB-SPL average, 123dB-SPL peak Power handling capacity 240W continuous pink noise, 55Hz 16kHz Recommended amplifier power 240W minimum, 480W maximum Sensitivity Full-range, 91dB-SPL (1W, 1m) Horizontal beamwidth 120 Vertical beamwidth 100 Enclosure construction Mica-reinforced polyethylene copolymer structural foam Fusing Built-in 4-ampere quick-acting fuse (replaceable) Insert locations Four M8 (8 mm) Connectors Two (2) parallel-wired 14" (6.3 mm) phone jacks and two (2) parallel-wired male XLR connectors Dimensions 13" (H) x 2012" (W) x 1212" (D) (33 x 52 x 32 cm) Weight 31 lb (14 kg)

Component Description

Each 802 Series II loudspeaker uses eight 412" full-range drivers mounted in symmetric vertical pairs on a faceted Articulated Array baffle assembly. The drivers feature low-impedance, edge-wound aluminum voice coils, 12-ounce Ferrite V ceramic magnets, and molded polyester frames. Their advanced cone and motor system give them high linear excursion capability and power output.
Tuned reactive air columns reduce distortion by controlling the cone excursion required to reproduce deep bass frequencies. A built-in directivity control circuit maintains the vertical dispersion pattern through the high-frequency range. It also protects the drivers from high-frequency overload. The 802C Series II systems controller is a single-rack sized device. It is capable of providing crossover functions, active electronic equalization, and dual channel signal processing for both the 802 Series II loudspeakers and the 502 B or 502BP Acoustimass enclosure. It features -10/+4dB-V input sensitivity switches, all-balanced inputs and outputs, -18/+3dB bass level control, and a bass mono sum switch. It also provides automatic output muting on turn-off, and a secure rear-panel operating mode switch.
REFER TO YOUR INSTRUCTION MANUAL FOR PROPER INSTALLATION AND OPERATING PROCEDURES. INCORRECT WIRING MAY RESULT IN DAMAGE AND/OR POOR PERFORMANCE. CAUTION AVIS
RISK OF ELECTRICAL SHOCK DO NOT OPEN RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR

MODE SWITCH GUIDE

POSITION OPERATING MODE 2-WAY WITH LOW FREQUENCY OPTION (NOT USED) STANDARD 2-WAY (WITH 502B) VOICE ONLY/FULL RANGE (WITH 502A)
TO REDUCE THE RISK OF FIRE OR ELECTRICAL SHOCK WARNING: DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE.
MODE INPUT LEVEL 10 +4 NC +BA 1 FR PROTECTED BY U.S. PATENT 3,038,964 INPUT LEVEL OPT 4

HIGH FREQ OUTPUT

PIN 1 GRN PIN 2 + PIN 3

LOW FREQ LEVEL. 0.

LOW FREQ OUTPUT

OUTPUT MODE SUM NORM

230V~AC 50/60Hz 12W

CH 1/SUM

TV Rheinland

geprdfte Sicherheit

the loudspeaker shall be 240 Watts continuous pink noise, band limited from 50Hz to 16kHz.

INPUT B

INPUT A

BRIDGE

MADE IN
CAUTION In order to grant a secure operation do not mount the amplifier in a fully closed housing. To preven electric shock, do not remove cover. Disconnect power line in case of servicing. ACHTUNG: Um sichere Funktion zu gewhrielsten, Gert nicht in vollstndig geshlossenes Gehuse einbauen. Abdeckung whrend des Betriebes nicht entfernen. Bor Offnen des Gertes Netzstecker ziehen. Bose Corporation, Framingham 01701, Mass, U.S.A.

Serial No.:

Made in Germany

Figure 1

Beamwidth vs Frequency (Bose 802-II)
The loudspeaker shall be provided with a ducted vent system, tuned at 55Hz. The input connectors of the 802 Series II loudspeaker shall consist of two (2) parallel-wired 14 inch (6.3 mm) phone jacks and two parallel-wired male XLR connectors. The loudspeaker enclosure of the 802 Series II loudspeaker shall be composed of mica-reinforced polyethylene copolymer structural foam. Outer dimensions of the 802 Series II loudspeaker shall be 13" (H) x 2012" (W) x 1212" (D) (33 x 52 x 32 cm); its weight shall be 31 lb (14 kg). The loudspeaker shall be the Bose 802 Series II loudspeaker system. The loudspeaker system shall be supplied with a separate systems controller, to be connected before the input(s) of the system power amplifier(s). The fixed, 2-channel systems controller shall provide active electronic equalization and crossover functions. It shall include an operating mode switch, input sensitivity switch, low-frequency output level control, and mono sum switch. The systems controller shall use screwtype terminal strips for balanced input and output wiring connections. Outer dimensions of the systems controller shall be 134" (H) x 19.0" (W) x 8.0" (D) (4 x 48 x 20 cm). It shall fit in the single space of a standard 19" equipment rack for mounting. Its weight shall be 5.5 lb (2.5 kg). The electronic controller shall be the Bose 802C Series II systems controller.
Systems Controller Technical Information
Audio channels Two Operating modes Full-range, bi-amp, option (w/option card) Rear panel connectors Balanced in-out x 2 (XLR) Balanced high-frequency output x 2 (XLR) Balanced low-frequency output x 2 (XLR) Crossover 140Hz with 502B bass enclosure 125Hz with OC-1 option card Rear panel controls Mode switch Input sensitivity switch x 2 (-10dB-V, +4dB-V) Bass level control (range -18dB, +3dB) Bass mono switch (norm/sum) Electrical specifications Channel separation: >60dB @ 1kHz Input impedance: 2.4k nominal Output impedance: 600 nominal Output level: 8.0V RMS max. into 600 Mechanical specifications Dimensions: 134" (H) x 19.0" (W) x 8.0" (D) (4 x 48 x 20 cm) Weight: 5.5 lb (2.5 kg)
Figure 2 For information on the 502 B and 502BP Acoustimass enclosure, refer to the technical data sheet for those products.
An optional plug-in card is available for the 802 C Series II systems controller. This allows the 802 Series II sound system to include the Bose Acoustic Wave Cannon System Series II loudspeaker.

For information on the Acoustic Wave Cannon System II loudspeaker, refer to the technical data sheet for that product.

System Configurations

The Bose 802 Series II system provides a flexible, building-block approach to meet the sound reinforcement requirements in many applications. Figure 1 shows a basic 802 system configuration. It consists of two 802 Series II loudspeakers and one 802C Series II systems controller. This system provides 117dB-SPL @ 1 m average acoustic output. Figure 2 provides a graph of the basic systems vertical and horizontal beamwidth. Figure 3a and b show the front and back of the 802C Series II systems controller.
Safety and EMC Compliance
Safety: UL 813 CSA C22.1 #1 IEC65/EN60065 EMC: EN55013 EN55020
Engineers and Architects Specifications
The loudspeaker shall be a multiple driver, full-range system with matched active equalization as follows: The transducer complement shall consist of eight (8) full-range drivers of 11.4 cm diameter, mounted symmetrically in vertical pairs on a faceted, removable baffle assembly. Each driver shall have a rated impedance of 1 and shall be wired in series, resulting in a composite nominal impedance of 8. The loudspeaker system sensitivity shall be 99dB-SPL in the 300Hz 3kHz range and 92dB-SPL in the 50Hz 16kHz range with both measurements referenced to a 1 Watt (2.83V) pink noise input at 1 meter. The nominal horizontal beamwidth shall be 120 degrees, and the nominal vertical beamwidth shall be 100 degrees. The power handling capacity of
Product CE is compliant for EMC and Safety.

Warranty Information

The Bose 802 Series II loudspeaker is covered by a 5-year, transferable limited warranty. The Bose 802C Series II systems controller is covered by a 2-year, transferable limited warranty.

Figure 3a

Figure 3b
1996 Bose Corporation, The Mountain, Framingham, MA 01701-9168 USA JN94532 PN177918 Rev.05 AM177918 Rev.05 PC010248

802C System Controller Original and SMD Version
Units with serial numbers beginning with 100000 are the original 802C's. Units with serial numbers beginning with 200000 are the new SMD 802C's.

1997 Bose Corporation

Service Manual
Part Number 129292 REV 03

Contents

Safety Information.... 3 Electrostatic Discharge Sensitive (ESDS) Device Handling... 4 Specifications..... 5 Technical Description..... 6 Disassembly/Assembly Procedures.... 7 Figure 1. Locking Tab Screw Location... 7 Figure 2. Original 802C PCB Exploded View... 8 Figure 3. SMD 802C PCB Exploded View.... 8 Test Procedures.... 9-10 Part List Notes..... 11 Main Part List..... 12 Figure 4. Main Parts Exploded View.... 13 Electrical Part List.... 14-17 Voltage Conversion Instructions... 18 Figure 5. Voltage Conversion Diagram... 18 Figure 6. Top Cover Connection Diagram... 19

SAFETY INFORMATION

1. Parts that have special safety characteristics are identified by the symbol on schematics or by special notes on the parts list. Use only replacement parts that have critical characteristics recommended by the manufacturer. 2. Make leakage current or resistance measurements to determine that exposed parts are acceptably insulated from the supply circuit before returning the unit to the customer. Use the following checks to perform these measurements: A. Leakage Current Hot Check-With the unit completely reassembled, plug the AC line cord directly into a 120V AC outlet. (Do not use an isolation transformer during this test.) Use a leakage current tester or a metering system that complies with American National Standards Institute (ANSI) C101.1 Leakage Current for Appliances and Underwriters Laboratories (UL) 1492 (71). With the unit AC switch first in the ON position, then in the OFF position, measure from a known earth ground (metal water pipe, conduit, etc.) to all exposed metal parts of the unit (antennas, handle bracket, metal cabinet, screwheads, metallic overlays, control shafts, etc.), especially any exposed metal parts that offer an electrical return path to the chassis. Any current measured must not exceed 0.5 milliamp. Reverse the unit power cord plug in the outlet and repeat test. ANY MEASUREMENTS NOT WITHIN THE LIMITS SPECIFIED HEREIN INDICATE A POTENTIAL SHOCK HAZARD THAT MUST BE ELIMINATED BEFORE RETURNING THE UNIT TO THE CUSTOMER. B. Insulation Resistance Test Cold Check-(1) Unplug the power supply and connect a jumper wire between the two prongs of the plug. (2) Turn on the power switch of the unit. (3) Measure the resistance with an ohmmeter between the jumpered AC plug and each exposed metallic cabinet part on the unit. When the exposed metallic part has a return path to the chassis, the reading should be between 1 and 5.2 Megohms. When there is no return path to the chassis, the reading must be infinite. If it is not within the limits specified, there is the possibility of a shock hazard, and the unit must be repaired and rechecked before it is returned to the customer.
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.
ELECTROSTATIC DISCHARGE SENSITIVE (ESDS) DEVICE HANDLING
This unit contains ESDS devices. We recommend the following precautions when repairing, replacing or transporting ESDS devices: Perform work at an electrically grounded work station. Wear wrist straps that connect to the station or heel straps that connect to conductive floor mats. Avoid touching the leads or contacts of ESDS devices or PC boards even if properly grounded. Handle boards by the edges only. Transport or store ESDS devices in ESD protective bags, bins, or totes. Do not insert unprotected devices into materials such as plastic, polystyrene foam, clear plastic bags, bubble wrap or plastic trays.
CAUTION: THE 802C SYSTEM CONTROLLER CONTAINS NO USER-SERVICEABLE PARTS. TO PREVENT WARRANTY INFRACTIONS, REFER SERVICING TO WARRANTY SERVICE STATIONS OR FACTORY SERVICE.

SPECIFICATIONS

Input Connections: (per channel) Output Connections: (per channel) Input Impedance: One (1) balanced female XLR connector One (1) unbalanced 1/4" phone jack Two (2) 1/4" phone jacks per channel (outputs used depend upon mode selected) Balanced input, 4k Unbalanced input, 42k

Electronic Crossover Frequency: Maximum Output Level:
180Hz (bi-amplified mode only) 4 Volts (+12dB into 600, 50Hz-16kHz)
Total Harmonic Distortion:
Less than.02% at 1 Volt (0dB) Less than.2% at 8 Volts (18dB) Less than 20uV (-9dBV) A-weighted 120 Vac, 50-60Hz, 3.5 Watts 220 Vac, 50-60Hz, (European) 100 Vac, 50-60Hz, (Japan) 1 3/4"H x 10" W x 5" D (4.4 x 25.4 x 12.7 cm) 1.97 lbs (.895 kg)
Output Noise: Power Requirements:

Dimensions:

Weight:

TECHNICAL DESCRIPTION

The 802C System Controller is a sophisticated signal processing device which combines the functions of three equalizers, an automatic switching circuit, and an electronic crossover. The 802C system controller automatically selects the proper crossover function and equalization curve for a given system application through use of a switching network operating in conjunction with the unit's output jacks. In addition to signal routing based on equalization requirements, the switching network indicates mode of operation on its front panel. The front panel also includes high-cut and low-cut switches which decrease line output by 4dB at 55Hz and by 10dB at 16kHz. Sharp subsonic and ultrasonic band-limiting filters reduce power waste, stage noise, high-frequency instability, and interference. The 802C system controller retains the compact dimensions of its predecessor, the Bose 802E active equalizer, and fits into one space of a standard 19" equipment rack with the optional RMK-8 Rack Mount Kit. In an on-going process of manufacturing updates, as technology permits, Bose Corporation has begun using SMD (surface mount devices) components on its 802C controller. The new SMD components are such a space saving feature that this new version permits us to eliminate the "piggy-back" PCB and place all electronics on one single printed circuit board. This manual will identify the different procedures, PCB layouts, and components where necessary. There is no difference in the operation or function between the original 802C and the 802C SMD units.
DISASSEMBLY/ASSEMBLY PROCEDURES
Note: Refer to the Figures (2 and 3) for the following procedures. 1. Top Cover Removal 1.1 Remove the four screws (two located at the rear of the unit and one located on each side of the unit) that secure the top cover to the chassis. 1.2 Lift the rear of the top cover slightly and slide it forward until the front of the top cover is clear of the switches. 2. Top Cover Replacement 2.1 Align the front of the top cover with the switches and LED's and slide the cover into place. 2.2 Secure the top cover into place. 3. 302EQ ("piggy-back") PCB Removal 6. Main PCB Replacement Note: The original 802C has two PCB's. The following procedure will discuss the removal of the "piggy-back" PCB. Note: The "piggy-back" PCB does not need to be removed when removing the main PCB. 3.1 Perform procedure 1. 3.2 Locate the four plastic stand-offs (three are located in the corners of the PCB and one is located between C125 and C225). 3.3 With small needle-nose pliers, squeeze the retaining tab of each stand-off while gently lifting up on the PCB to release the lock. Grasp the PCB at the middle of each side and lift the PCB off of the connectors. 4. 302EQ ("piggy-back") PCB Replacement 4.1 Replace the "piggy-back" PCB (on the original 802C controller) by placing the board over the connectors and pushing the board down onto the stand-offs. 7 6.1 Carefully slide the PCB into the chassis while aligning the XLR jacks into their housing. 6.2 Lock the XLR jacks into place by inserting a small screwdriver into the small hole in the XLR jack and rotate the screw clockwise 1/8 turn. 6.3 Replace the 5 screws that hold the PCB into place in the chassis. 6.4 Perform procedure 2. 4.2 Perform procedure 2. 5. Main PCB Removal 5.1 Perform procedure 1. 5.2 Remove the 6 knurled nuts securing the input and output jacks to the chassis. 5.3 Remove the 5 screws that secure the main PCB to the chassis. 5.4 On the rear of the unit, at the XLR jacks there is a small hole with a locking screw inside (see Figure 1). Insert a small flathead screwdriver into the hole and rotate the locking screw 1/8 turn counterclockwise to release the locking tab. 5.5 Lift the front of the PCB up slightly. Gently pull the PCB out while pushing on the center of the XLR jacks.

Figure 1. Locking Tab Screw Location
Figure 2. Original 802C PCB Exploded View
Figure 3. SMD 802C PCB Exploded View

TEST PROCEDURES

1. Mode Indicator Test 1.1 Depending on the output jack configuration (see top cover diagram on page 17), equalization curves and output vary. You must test all modes of the 802C to assure proper operation. 1.2 Perform the test below to verify that the mode select operation is working properly. Note: You can insert one or both of the output jacks into the unit for this test. Note: Set both the Lo and Hi cut switches IN for the following response table. Lo and Hi Cut Switch Response Table Frequency 55Hz 750Hz 15kHz Output +9.3dB 0dB (reference) +6.9dB Tolerance 1.8dB 2.0dB
3. 302 Passive Frequency Response 3.1 Apply a 750Hz, 500mVrms signal to the input of the 802C. 3.2 Reference a dB meter to the 302 AMP output jacks.

LED Indicator Status

Output Jacks Inserted No Jacks Inserted Inserted into 802 AMP Inserted into 302 AMP Inserted into 802 and 302 AMP 802 Full Range On On Off Off Passive 2-Way Off Off On Off BiAMP Off Off Off On
3.3 Refer to the frequency response table below and verify the response of the unit. Passive Frequency Response Table
Frequency 30Hz 55Hz 150Hz 250Hz 750Hz 3kHz 15kHz
2. 802 Full Range Frequency Response 2.1 Apply a 750Hz, 500mVrms signal to the input of the 802C. 2.2 Reference a dB meter to the 802 AMP output jacks. 2.3 Refer to the frequency response table below and verify the response of the unit. Full Range Frequence Response Table Frequency Output Tolerance 55Hz +14.0dB 1.5dB 30Hz 0dB 2.5dB 250Hz +2.7dB 1.2dB 750Hz 0dB (reference) 3kHz +2.3dB 1.5dB 7.5kHz +12.0dB 1.5dB 15kHz +16.9dB 1.8dB
Output -8.8dB +6.2dB -3.2dB +3.2dB 0 dB (reference) 0.9dB +15.3dB
Tolerance 2.5dB 1.5dB 1.5dB 1.8dB 1.5dB 1.8dB
4. Bi-Amp Frequency Response Note: This test is performed with both the 802 AMP and the 302 AMP output jacks used at the same time. 4.1 Apply a 750Hz, 500mVrms signal to the input of the 802C. 4.2 Reference a dB meter to the 802 AMP output jacks (while in the Bi-Amp mode). 4.3 Refer to the frequency response table below and verify the response of the unit. 802 Bi-Amp Frequency Response Table Frequency Output Tolerance 55Hz -20.1dB 2.5dB 230Hz +2.6dB 1.8dB 750Hz 0 dB (reference) 15kHz +17.0dB 1.8dB 9
4.4 Apply a 100Hz, 500mVrms signal to the input of the 802C. 4.5 Reference a dB meter to the 302 AMP output jacks (while in the Bi-Amp mode). 4.6 Refer to the frequency response table below and verify the response of the unit. 302 Bi-Amp Frequency Response Table Frequency 55Hz 100Hz 230Hz 750Hz Output +3.7dB 0dB (reference) -8.3dB -25.8dB Tolerance 1.5dB 1.5dB 2.5dB 6. Noise Test 6.1 All noise measurements are ANSI A-weighted true rms, with the inputs shorted. 6.2 Refer to the table below for the proper noise levels. Noise Table Output Noise 802 Full <20uV Range 302 Passive <20uV 802 Bi-Amp <20uV 302 Bi-Amp <10uV

5. Distortion Test Note: Total harmonic distortion must be measured in all modes to assure proper operation. 5.1 Apply a 750Hz, 5Vrms signal to the input of the 802C. 5.2 Refer to the table below for the distortion specification for the corresponding mode being tested. Note: For the Bi-Amp 302 reading the input signal should be a 100Hz, 5Vrms signal. Distortion Table Output 802 Full Range 302 Passive 802 Bi-Amp 302 Bi-Amp Frequency. Distortion 750Hz <0.1% 750Hz 750Hz 100Hz <0.1% <0.1% <0.1%

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 PCB are listed in the Electrical Part List.
This part is critical for safety purposes. Failure to use a substitute replacement with 3. the same safety characteristics as the recommended replacement part might create shock, fire and or other hazards. 4. RC-4156 is to be used ONLY as a replacement for U5 and U6. This replaces the selected LS-404 IC previously used in these locations. Due to the higher current needs of the RC-4156, DAMAGE could occur to the power supply if this IC is used in other locations on the PCB. 5. This part is used on the 220V variation only.

MAIN PART LIST

Item Number 7 8
(See Figure 4) Description
COVER CHASSIS FEET SCREW, SHEET METAL, 4-40 x.25L CONNECTOR, XLR NUT, KNURLED STRAIN RELIEF BUSHING LINE CORD, 100/120V LINE CORD, 220V LED BRACKET, LED SMD PCB ASSEMBLY SWITCH, KNOB SWITCH, DUAL SCREW, MACHINE, 4-40 x.187L STANDOFF PCB ASSEMBLY (TOP) PCB ASSEMBLY (MAIN) CARTON FILLER POLY BAG ACCESSORY KIT MTG KIT (802 COVER) SWITCH, SLEEVE INSULATOR SCREW, MACHINE, NYLON, 6-32 x.75L, 220V SCREW, MACHINE, NYLON, 6-32 x.25L, 220V STANDOFF, HEX, 6 x.375L
Description CONNECTOR, XLR, INSERT JACK, PHONE WAFER, 7PIN, (2461) CONNECTOR, 7PIN (21458) WAFER, 6PIN (2461) CONNECTOR, 6PIN (21458) TEMINAL, FASTON
Part Number 103593 103118-103140-124843-12 128843-04 121828-06
Part Number 123237-07 121970-07 123237-06 121970-06 111262

Note 1

17 Reference Designator J1, 3 J2, 4-8 J9 J9 J10 J10 P1, 2
TRANSFORMER, 110/220V TRANSFORMER, 120V TRANSFORMER, 100V 12

120993 121659-1 121824

Figure 4. Main Parts Exploded View

ELECTRICAL PART LIST

Resistors
Reference Designator R1, 2 R3, 4 R5-7, 11, 15, 118, 218 R8, 9, 12, 13, 16, 17, 101, 210, 104, 204 R10, 14, 18 R102, 103, 105, 122, 124, 202, 203, 205, 222, 224 R106, 206 R107, 207 R108, 208 R109, 126, 130, 131, 209, 226, 230, 231 R110, 210 R111, 113, 211, 213 R112, 146, 152, 212, 246, 252 R114, 214 R115, 215 R116, 125, 216, 225 R117, 128, 129, 133, 134, 217, 228, 229, 233, 234 R119, 120, 219, 220 R121, 136, 221, 236 R123, 223 R127, 227 R132, 141, 145, 153-158, 232, 241, 245, 253-258 R135, 159, 235, 259 R137, 237 R138, 140, 238, 240 R142, 242 R143, 243 Description 2.7k, 1/4 Watt, 5% 3.3k, 1/4 Watt, 5% 160k, 1/4 Watt, 5% 330k, 1/4 Watt, 5% 8.2k, 1/2 Watt, 5% 2.00k, 1/4 Watt, 1% 1.9k, 1/4 Watt, 1% 48.7k, 1/4 Watt, 1% 20k, 1/4 Watt, 5% 23.7k, 1/4 Watt, 1% 2.74k, 1/4 Watt, 1% 1k, 1/4 Watt, 5% 4.75k, 1/4 Watt, 1% 13k, 1/4 Watt, 2% 10k, 1/4 Watt, 5% 8.2k, 1/4 Watt, 2% 6.81k, 1/4 Watt, 1% 18k, 1/4 Watt, 5% 22k, 1/4 Watt, 5% 470, 1/4 Watt, 5% 130k, 1/4 Watt, 5% 6.04k, 1/2 Watt, 1% 510, 1/4 Watt, 5% 47.5k, 1/4 Watt, 1% 15.0k, 1/4 Watt, 1% 3.0k, 1/4 Watt, 1% 33k, 1/4 Watt, 5% Part Number 122071-122071-1177041213335 Note

Resistors (continued)

Reference Designator R144, 244 R148, 248 R149, 249 R150, 250 R160, 260 Description 56k, 1/4 Watt, 2% 4.12k, 1/4 Watt, 1% 23.7k, 1/4 Watt, 1% 30.9k, 1/4 Watt, 1% 22k, 1/4 Watt, 5% Part Number 1177041212235 Note

SMD Resistors

Reference Designator R1, 2 R3, 4 R5, 6, 7, 11, 15, 118, 218 R8, 9, 12, 13, 16, 101, 104 R102, 103, 105, 111, 122, 124, 202, 203, 205, 211, 222, 224 R106, 206 R107, 207 R108, 208 R109, 126, 130, 131, 209, 226, 230, 231 R110, 210 R112, 114, 212, 214 R113, 213 R115, 215 R116, 125, 139, 152, 216, 225, 239, 252 R117, 128, 129, 133, 134, 217, 228, 229, 233, 234 R119, 120, 219, 220 R121, 136, 160, 221, 236, 260 R123, 223 R127, 227 R132, 141, 145, 147, 151, 153-158, 232, 241, 245, 247, 251, 253-258 R137, 237 R142, 242 R143, 149, 150, 234, 249, 250 R144, 244 R146, 246 R164, 264 Description 2.7k, CHIP, 5% 3.3k, CHIP, 5% 160k, CHIP, 5% 330k, CHIP, 5% 2.00k, CHIP, 1% 1,91k, CHIP, 1% 48.7k, CHIP, 1% 20k, CHIP, 5% 23.7k, CHIP, 1% 2.74k, CHIP, 1% 13.3k, CHIP, 1% 1k, CHIP, 5% 10k, CHIP, 5% 8.25k, CHIP, 1% 6.81k, CHIP, 1% 18k, CHIP, 5% 22k, CHIP, 5% 470, CHIP, 5% 130k, CHIP, 5% 6.04k, CHIP, 1% 47.5k, CHIP, 1% 3.01k, CHIP, 1% 33k, CHIP, 5% 56.2k, CHIP, 1% 4.75k, CHIP, 1% 26.7k, CHIP, 1% Part Number 124895-2725 124895-3325 124895-1645 124895-3345 124894-2001 124894-1911 124894-4872 124895-2035 124894-2372 124894-2741 124894-1332 124895-1025 124895-1035 124894-8251 124894-6811 124895-1835 124895-2235 124895-4715 124895-1345 124894-6041 124894-4752 124894-3011 124895-3335 124894-5622 124894-4751 124894-2672 Note

Capacitors

Reference Designator C1 Description.0047uF, 220V.0047uF, 1.4KV, 100/120V.015uF, FILM.01uF, CERAMIC DISC 470uF, ELECTROLYTIC 1uF, ELECTROLYTIC.1uF, CERAMIC DISC 22uF, ELECTROLYTIC 2.2uF, ELECTROLYTIC.0068uF, FILM.33uF, FILM.1uF, FILM.0012uF, FILM 470pF, CERAMIC DISC 270pF, CERAMIC DISC.033uF, FILM.068uF, FILM.047uF, FILM.082uF, FILM.022uF, FILM Part Number 118091-153 119696-119942-1R119944-220 119943-2R2 118091-682 123785-334 118091-104 118091-122 119617-471 119617-271 118091-333 118091-683 118091-473 118091-823 118091-223 Note 3
C2, 3 C4 C5, 6 C7-10 C11-19, 22 C101, 117, 125, 201, 217, 225 C102, 202 C103-105, 203-205 C106, 206 C107, 108, 121, 122, 207, 208, 221, 222 C109, 209 C110, 126, 127, 210, 226, 227 C111, 211 C112, 113, 124, 212, 213, 224 C114, 214 C115, 116, 123, 215, 216, 223 C118, 119, 218, 219 C120, 220

SMD Capacitors

Reference Designator C4 C11-22 C110, 126, 127, 210, 226, 227 C111, 211 Description.01uF, CERAMIC, CHIP.1uF, CERAMIC, CHIP 470pF, CERAMIC, CHIP, 10% 270pF, CERAMIC, CHIP, 10% Part Number 124959-103 124959-104 124956-4712 124956-2742 Note

Diodes

Reference Designator D1-5 D1, 101, 104, 201-204 Z1 Description ZENER, 18V, 1W, IN4746A 1N4148, DIODE BRIDGE RECTIFIER Part Number 116995-4746A Note

Transistors

Reference Designator Q1, 4, 5 Q2, 3, 6 Description TRANSISTOR NPN TRANSISTOR PNP Part Number Note

Integrated Circuits

Reference Designator U1, 8, 9 U2 U3 U4 U5, 6 U7, 10 Description QUAD OP AMP, LS-404 VOLT REG, 78L15 VOLT REG, 79L15 QUAD NAND CD-4011 QUAD OP AMP, RC4156 QUAD AW. SW. CD4066 Part Number 120535/192166 121116-1 121117-Note 4
Part Number change for U2 and U3 9/18/01 Also U5 and U6 has been replaced by part number 192166 which is an LS404 IC. The RC4156 is nolonger available.
VOLTAGE CONVERSION INSTRUCTIONS
Voltage Conversions are to be performed on Military units. However it is possible to convert a 110 Volt unit (by replacing the transformer) and a 220 Volt European unit.
1. 220 Volt to 110 Volt Conversion Note: Conversions must be performed with the line cord disconnected from any power source. Refer to Figure 3 below for the following procedures. The jumpers listed in parentheses refer to the SMD units. 1.1 Perform disassembly procedure 3, PCB removal. 1.2 Locate jumper LK-31, (LK-35) in front of the power transformer (near the line cord), and remove it. 1.3 Add jumpers LK-32 (LK-42) and LK-33 (LK-43). For European 220 Volt units. 1.4 Remove the 220 Volt line cord and replace it with a 110 Volt line cord. Make certain the line cord is properly installed in the strain relief. 1.5 Perform assembly procedure 4, PCB replacement. 1.6 Test the unit to confirm the voltage conversion was perform correctly. 1.7 Remove the 220 Volt label on the rear of the unit. 2. 110 Volt to 220 Volt Conversion 2.1 Perform disassembly procedure 3, PCB removal. 2.2 Remove the two jumpers LK-32 (LK42) and LK-33 (LK-43). For units with a 110 Volt transformer. 2.2 Remove the 110 Volt transformer and C1 capacitor, and install 220 Volt components (see the part list). 2.3 Add jumper LK-31 (LK-35). Line cord replacement is optional. 2.4 Perform assembly procedure 4, PCB replacement. 2.5 Test the unit to confirm the voltage conversion was perform correctly. 2.6 Add a 220 Volt label on the rear of the unit just below the line cord.

220 Volt to 110 Volt Conversion
110 Volt to 220 Volt Conversion
Figure 5. Voltage Conversion Diagram 18
Figure 6. Top Cover Connection Diagram
SPECIFICATIONS AND FEATURES SUBJECT TO CHANGE WITHOUT NOTICE
Bose Corporation The Mountain Framingham Massachusetts USA 01701
P/N 129292 REV. 03 10/97 FOR TECHNICAL ASSISTANCE OR PART ORDERS, CALL 1-800-367-4008