® ® Model 1600VI and 1800VI Professional Stereo Power Amplifiers © 1998 Bose Corporation Service Manual Part Number 199747 Rev.
CONTENTS Safety Information ............................................................................................................................ 4 Electrostatic Discharge Sensitive (ESDS) Device Handling ........................................................ 4 1800VI Specifications ................................................................................................................... 5-6 1600VI Specifications .............................................................................
CAUTION: The Bose® 1600VI and 1800VI Professional Stereo Power Amplifiers contain no user-serviceable parts. To prevent warranty infractions, refer servicing to warranty service centers 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.
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.
1800VI SPECIFICATIONS Size: 3.5"H (2U) x 19"W x 13.25"D 89mm x 483mm x 337mm Weight: Net: 33 lbs. (15 kg) Shipping weight: 39 lbs. (17.7 kg) Display: 7 LED indicators per channel 1 green - READY, 5 yellow - SIGNAL, 1 red - CLIP/PROTECT Operating Temperature: 0° to 50° C, up to 85% RH Performance Specifications Continuous Average Output Power, both channels driven: 450 Watts per channel into 8 Ohms from 20 Hz to 20 kHz, with no more than 0.
1800VI SPECIFICATIONS Input Overload: +18 dBu IM Distortion: < 0.1% THD: @ 0.775 V Sensitivity, < 0.2% @ 1.5 V Sensitivity, < 0.
1600VI SPECIFICATIONS Size: 3.5"H (2U) x 19"W x 13.25"D 89mm x 483mm x 337mm Weight: Net: 30 lbs. (13.6 kg) Shipping weight: 36 lbs. (16.3 kg) Display: 7 LED indicators per channel 1 green - READY, 5 yellow - SIGNAL, 1 red - CLIP/PROTECT Operating Temperature: 0° to 50° C, up to 85% RH Performance Specifications Continuous Average Output Power, both channels driven: 240 Watts per channel into 8 Ohms from 20 Hz to 20 kHz, with no more than 0.
1600VI SPECIFICATIONS Input Overload: +18 dBu IM Distortion: < 0.1% THD: @ 0.775 V Sensitivity, < 0.2% @ 1.5 V Sensitivity, < 0.
H Fuse 9 Figure 1.
THEORY OF OPERATION 1. General The Bose® Model 1600VI and 1800VI Professional Stereo Power Amplifiers are two-channel, installed/portable amplifiers made for professional sound applications. The 1600VI is rated at 240 Watts into 8 Ohms and 325 Watts into 4 Ohms. In the bridged-mono setting it can deliver 700 Watts. The 1800VI is rated at 450 Watts into 8 Ohms and 600 Watts into 4 Ohms. In the bridged-mono setting it can deliver 1400 Watts.
THEORY OF OPERATION 2.1 Input Module Note: Some amplifiers will be equipped with the Bose® ACM-1 Amplifier Control Module in place of the Bose Input Module. This module retains all of the capabilities of the Bose Input Module, except sequence (see section 2.8), and includes the ability to control and monitor the amplifier over a control network. Refer to the ACM-1 Amplifier Control Module service manual, part number 199746 for more information.
THEORY OF OPERATION When SW1 is set to the NORMAL mode, CH1 and CH2 operate independently. In this mode a logic high is applied to the control pins of U6 and U5. This routes the outputs of U4 and U3 to their respective channels in the amplifier via J1-20 and J1-16. In DUAL MONO mode both amplifier channels are driven by the signal applied to the CH2 input. U6-1 is driven high (+15V) and U5-1 is driven low (+7.5V), selecting CH2 to drive both channels of the amplifier.
THEORY OF OPERATION 2.3 Output Relays Note: Refer to the Output PCB schematic for the following. Relay K100 is used to connect the output signal to the Speaker Output Binding Posts through J1. The CH1 and CH2 (K100 and K200) output relays are energized independantly of each other. In CH1, immediately after the power switch is turned on, +6 Vdc is applied to terminal 2 of D105 (ready LED) on the display board via the voltage divider formed by R112/R113.
THEORY OF OPERATION D2 and D3 on the Regulator Board provide overvoltage protection to U4. U4B-14 is a full-wave rectifier that outputs positive pulses to comparator U4C. The reference voltage is set at 0.7Vdc by R10 at pin 3. Where pin 2 crosses the threshold, the output of U4C-1 goes open and C6 begins to charge through R21 and U4A-8. U4A is a voltage-to-current converter (Howland current pump), whose output current is determined by the voltage at the junction of R12 and R13.
THEORY OF OPERATION The -15Vdc supplied to U5A-4 is backed up with a voltage divider off the -106Vdc supply (R26/ R27). Without this, if the -15Vdc supply should fail for some reason, the output of U5A-1 would go high, drawing maximum current through the LED in U1 and latching the triac into full conduction. To prevent this, D8 will become forward biased and supply negative DC to U5A-4, keeping it operating normally.
THEORY OF OPERATION The output signal is sensed at the speaker output via the I/O Board (J2-3 Output Board to J6-3 I/O Board to J3-6 I/O Board to J1-6 Display Board). D22 half-wave rectifies the signal and provides a DC voltage proportional to the amplifier’s output to drive the signal display circuit. C2 and R19 determine the response characteristics of the display. The signal driver circuit comprised of U1-U4 is basically a ladder comparator driving LEDs, with a twist.
THEORY OF OPERATION 3.2 Clipping Eliminator Circuit This circuit is controlled by the LED/LDR opto-isolator U3, located on the I/O Board. The LED portion of this component is driven from a bridge rectifier (D4) that gets its input signal from U100A-1 on the Amplifier Board. Under normal conditions (undistorted amplifier output) there is almost no signal at this point.
THEORY OF OPERATION 4.0 Operating Modes The Bose® 1600VI and 1800VI amplifiers are capable of being configured to operate in several different modes in order to allow greater flexibility in use. 4.1 Bridged Mono/Dual Mono Switching The Stereo/Mono Switch (S1) on the Input Board is a three-position switch used to select Normal Stereo, Bridged Mono or Dual Mono operation. In the Bridged Mono position, it connects CH 1 in parallel with the CH 2 input, but inverts the signal to CH 1.
DISASSEMBLY/ASSEMBLY PROCEDURES Note: It's advisable to mark or note wiring configuration before any disassembly begins. For more information refer to the Wiring Diagrams Figures 19 and 20. Note: Refer to Figure 6 for the following procedures. 3. Display Board Removal Note: Refer to Figures 2, 3 and 4 for the following procedures. 3.1 Remove the cover (1) using procedure 1. 1. Cover Removal 3.2 Remove the connectors from transformer (4) terminals 6-11.
Qty 3 3 1 Cover 1800 SERIES V PROFESSIONAL AMPLIFIER FOR BRIDGED OPERATIONS BRIDGED 1400 W 8 D.O.M. CONSULT OWNERS MANUAL BOSE CORPORATION, FRAMINGHAM, MA 01701-9168 MADE IN U.S.A. LICENSED UNDER U.S. PAT. NO. 4,484,150 700 W 4 CAUTION 700 W 4 AVIS WARNING TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE. Qty 3 3 - CH 2 + + CH 1 SPEAKER OUTPUTS AC 100V 50-60Hz 1800 W 2 Chassis Qty 3 3 CLASS 1 WIRING SHALL BE USED Figure 3.
Sequence Switch 53 9 Power Switch LOAD LINE 10 Figure 5.
Figure 7.
DISASSEMBLY/ASSEMBLY PROCEDURES 6.2 Carefully line up the holes of the regulator board with the nylon standoffs mounted on the power supply board. Snap three corners of the board onto each nylon standoff. 4.3 Connect the power supply cables back to transformer (4) terminals 6-11. 4.4 Replace the cover (1) using procedure 2. 6.3 Replace the transformer (4) using procedure 12. Refer to Figures 7 and16 for correct wire locations. Note: Refer to Figures 3, 4 and 6 for the following procedures. 5.
DISASSEMBLY/ASSEMBLY PROCEDURES Note: Refer to Figures 5, 6 and 7 for the following procedures. 11.3 Place the chassis (2) on its side. 11.4 While holding the transformer with one hand, use a phillips-head screwdriver to remove four screws (13) and washers (14) from the bottom of the chassis. 9. Line Filter Removal 9.1 Remove the cover (1) using procedure 1. 11.5 Remove the transformer from the chassis. 9.2 Make a note of the wiring configuration of the line filter (10) and disconnect the wires. 12.
DISASSEMBLY/ASSEMBLY PROCEDURES 14.5 Connect the amplifier and power supply board (7) cables to the output board (16) WL1, WL2, WL100, WL101, WL200 and WL201 terminals. Refer to Wiring Diagram Figure 19. Note: Some cables are bundled together. Cut any wire wraps when necessary. 13.5 Note the locations of RT100, RT200, Q104 and Q204 at the corners of the amplifier board and their placement against the heatsink. 14.6 Replace the cover (1) using procedure 2. 13.
DISASSEMBLY/ASSEMBLY PROCEDURES 15.9 Using a phillips-head screwdriver, remove four screws (29) from the two brackets (22) that secure the heatsink (18) to the inside of the chassis back panel. 16.4 Connect the output board black wires to the binding posts (items 24 or 25) by tightening four nuts with a wrench. Refer to Figure 19 for the proper wiring. 15.10 To release the heatsink base from the bottom of the chassis, use a phillipshead screwdriver to remove four screws (3) from the chassis bottom panel.
DISASSEMBLY/ASSEMBLY PROCEDURES Attach Bridge to Heatsink 16.14 Connect the cables from the line filter (10) power or sequence switch board (9) and fuse holder (32) to the power supply WL1-WL8 terminals. 16.15 Connect all the cables connected to the transformer. 30 Power Supply Board Heatsink Bridge 16.16 Replace the cover (1) using procedure 2. 39 Note: Refer to Figures 6, 8 and 9 for the following procedures. 18 Figure 9. Heatsink Bridge 17.
DISASSEMBLY/ASSEMBLY PROCEDURES 18. Power Supply Board Replacement The screws are located over the fan exhaust slot. 18.1 Attach the power supply board (7) to the heatsink (18) by tightening four screws (30) into each corner of the board. Use a phillips-head screwdriver. Refer to Figure 7. 19.4 Release the lower shield from the bottom of the chassis by removing two screws (3) with a phillips-head screwdriver. 18.2 Seat the regulator board into the power supply board, see Procedure 6. 19.
DISASSEMBLY/ASSEMBLY PROCEDURES Note: Refer to Figure 6 for the following procedures. Note: Refer to Figures 4, 10 and 11 for the following procedures. 21. I/O Board Removal 23. Input Module Removal 21.1 Use Procedure 15, Steps 15.1-15.12 to remove the chassis cover (1), disconnect cabling, and to move the heatsink (18), which will allow access to the I/O board (6). 23.1 Use a phillips-head screwdriver to remove two screws (3) from the input module (17) connector panel. 23.
DISASSEMBLY/ASSEMBLY PROCEDURES Note: The Bose® ACM-1 Amplifier Control Module is used in place of the standard Input Module to allow control and monitoring of the amplifier by use of a control network. It uses the same types of audio input connectors as the standard Input Module, as well as EQ outputs and sequence control. It will accommodate one Bose EQ card for each channel. Refer to the ACM-1 Amplifier Control Module service manual part number 199746 for more information.
TEST PROCEDURES Only if you are connected to a Bose control network using the required Bose software will you be able to pass audio through an amplifier with a Bose ACM-1 Amplifier Control Module installed. Refer to the ACM-1 service manual part number 199746 for more information. Audio Signal Generator dB Meter Loads Figure 11. EQ Card Placement Inputs Input Module Amplifier rear panel Outputs Test Setup Parameters: 1.
TEST PROCEDURES 3. Distortion Level 6. Thermal Shut Down Test 3.1 Apply a 1.5 Vrms, 1 kHz signal for low sensitivity units, or a 775 mVrms, 1 kHz signal for high sensitivity units, to the amplifier channel under test. 6.1 Remove the top cover using Disassembly/Assembly procedure 1. 6.2 Apply a 16 mVrms, 1 kHz signal to the input jacks of both channels of the amplifier under test. 3.2 Set the CH1 or CH2 level controls, as appropriate, to the full on position (fully clockwise). 6.
TEST PROCEDURES 8. Potentiometer Tracking Test 10.1 Using a DVM, measure the DC voltage across one of the emitter resistors. For the 1600VI amplifier, measure across R144, R145, R148, R149, R150, R151, R154 or R155 for channel 1. Measure across the corresponding emitter resistors for channel 2. For the 1800VI amplifier, measure across R144 through R155. Measure across the corresponding emitter resistors for channel 2.
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. Used on the 1600VI amplifier. 5. Used on the 1800VI amplifier. 6.
MAIN PART LIST 1600VI and 1800VI Amplifiers (see Figures 13-17) Item Number 1 2 Part Number Qty.
MAIN PART LIST 1600VI and 1800VI Amplifiers (see Figures 13-17) Item Number 28 Description Part Number Qty. 182718 4 182722 32 Note Screw, MA, FHP, 6-32 x 1-1/4, blk, upper fan shield Screw, STP, PHP, 4 x 1/2, AB, w/washer, BO, transistors (28), hs brkt (4) Screw, #4 x 1/2”, PHP, Type B STZ, p/s mounting (4), hs block (2) Line Cord, 14/3, SJT, SHLD, 15A Euro, 16A, 7ft.
MAIN PART LIST 1600VI and 1800VI Amplifiers (see Figures 13-17) Item Number - Description Part Number Qty. 199751 3 199776 199777 199757 199758 199772 199773 182772 182832 2 1 1 2 1 1 4 9 Standoff, .280d x .625l, Locking Nylon, between pwr supply and reg. Standoff, PEM, 6-32 x 1/2, ST UP Standoff, PEM, 6-32 x .
13 14 Qty 4 21 30 Attaches clamp Qty 4 3 Qty 4 3 Qty 2 18 12 51 35 AIR FLOW 29 52 Qty 4 38 Qty 2 22 Qty 2 Figure 15.
Figure 16.
Figure 17.
ELECTRICAL PART LIST Amplifier PCB Assembly Reference Designator A5 A5 Description PCB Assy, Amplifier, 1600VI PCB Assy, Amplifier, 1800VI Part Number 199781 Note 1, 2, 4 182756 1, 2, 5 Part Number 182788 182800 182802 Note Resistors Reference Designator R100, 200 R101, 115, 201, 215 R102, 107, 114, 116, 202, 207, 214, 216 R103, 117, 203, 217 R104, 119, 204, 219 R105, 120, 143, 205, 220, 243 R106, 121, 206, 221 R108, 118, 208, 218 R109, 209 R109, 209 R110, R210 R111, 112, 211, 212 R113, 213 R122,
ELECTRICAL PART LIST Capacitors Reference Designator C106, 206 C109, 209 C110, 111 C112, 113, 210, 211 Description 22pF, Ceramic Disc, 10%, 1000V 4.7uF, AE, AXL, 20%, 50V .01uF, CRML, RDL, +80 -20, 100V .
ELECTRICAL PART LIST Power Supply PCB Assembly Reference Designator A4 A4 Description PCB Assy, Power Supply, 1600VI PCB Assy, Power Supply, 1800VI Part Number 199782 Note 1, 2, 4 182757 1, 2, 5 Part Number 182850 182857 182788 187934-18R0 182856 182861 182800 Note Resistors Reference Designator R1 R2 R3, 12, 21, 32, 41, 52, 63 R4 R5, 9 R6, 7, 8 R10, 13, 15, 27, 29, 31, 42, 44, 46, 59, 60, 62 R11, 30, 43, 61 R14, 28, 45, 58 R16, 47 R17, 23, 39, 48, 54, 71 R18, 49 R19, 50 R20, 35, 51, 66 R22, 38, 53,
ELECTRICAL PART LIST Capacitors Reference Designator C12, 18, 21, 28, 32, 35, 42, 43 C13, 20, 29, 34 C14, 22, 30, 36 C15, 23, 31, 37 C16, 17, 24, 25 C38, 40 C39, 41 C44, 45 Description .0018uF, PE, Radial, 10%, 100V 390pF, Ceramic Disc, 10%, 1000V 100uF , AE, AXL, 20%, 25V .01uF, Ceramic Disc, 20%, 500V .047uF, CRML, 20%, 200V, X7R .01uF, CRML, Radial, +80 -20, 100V .
ELECTRICAL PART LIST Integrated Circuits Reference Designator U1 U2, 3 Description Opto-Triac Driver, MOC3052 Dual Volt Comparators, LM393 Part Number 182880 Note 182879 Miscellaneous Reference Designator J1 J2 JP1, 2 JP3 JP4 WL1, 2, 3, 4, 5, 6, 7, 8 Description Conn, 18 pin, Single Row, .100, Gold Header, Square pin, .156 CTR, Tin, 16 pin Jumper, .2 x .25, 22AWG, Insul Wht Jumper, .2 x .25, 22AWG, Insul Wht Jumper, 18AWG, .5in, Insulated Connector Tab, .
ELECTRICAL PART LIST Input/Output PCB Assembly Reference Designator Description PCB Assy, Input/Output, 1600VI/1800VI Part Number 182758 Note 1, 2, 4, 5 Part Number 182906 199752 182793 182808 182790 182800 182788 182901 182789 182794 182979 182902 182852 182903 182798 182904 182810 182796 199754 199755 182907 182910 182900 182905 Note Part Number 182898 Note Resistors Reference Designator R1, 3 R4 R5 R6 R7, 8 R8, 12, 20, 27, 28, 53, 96, 97, 99, 100 R9, 11, 56, 92 R10, 26, 63, 76 R13, 16, 30, 38, 44
ELECTRICAL PART LIST Diodes Reference Designator D1, 2, 6, 7, 8, 9, 12, 13, 14, 15, 16, 17, 18, 20, 21, 22, 23, 24, 27, 29, 30, 31, 32, 33, 34, 36 D3, 4 D5, 19 D10, 26 D35, 37 Description 1N4148 Bridge Rect, 50V, 1.
ELECTRICAL PART LIST Output PCB Assembly Reference Designator A3 Description PCB Assy, Output, 1600VI/1800VI Part Number 182759 Note 1, 2, 4, 5 Part Number 182932 Note Resistors Reference Designator R1 R2 R3 R4 R5 R6 R7 R8 R11 R100, 200 R102, 202 R103, 203 R110, 210 R111, 211 R112, 113, 212, 213 R114, 214 Description 130Ω, Metal Oxide Film, 3W, 5% 910Ω, MF, Fuse, 1/4W, 5% 27k, CF, 1/4W, 5% 20k, CF, 1/4W, 5% 10k, CF, 1/4W, 5% 6.2k, CF, 1/4W, 5% 47k, CF, 1/4W, 5% 91Ω, WW, 7W, 5% 56k, CF, 1/4W, 5% 6.
ELECTRICAL PART LIST Integrated Circuits Reference Designator U1 Description Dual Volt Comparators, LM393 Part Number 182879 Note Part Number 182942 Note Miscellaneous Reference Designator K100, 200 L100, 200 J2 J3 WL1, 2, 100, 101, 200, 201 E1, 2 Description Relay, SPST, NO, 24V, 20A Choke, 5uH, 14AWG Wire Header, 14p, Dual Row, .1 CTR, G Header, 2p, .1 CTR, LOCK ST POST CONN TAB, .250, PCMT Screw, Terminal PC Mnt Standoff, .25od, 6-32 x .
ELECTRICAL PART LIST Regulator PCB Assembly Note: The Regulator PCB Assembly is not used in the 1600VI Amplifier Reference Designator A11 Description PCB Assy, Regulator, 1800VI Part Number 182760 Note 1, 2, 5 Part Number 182947 182960 Note Resistors Reference Designator R1 R3, 4 R5, 6, 34 R8 R9 R10, 22 R11 R12, 18 R13 R14, 17 R15 R16 R19, 21 R20 R23, 24 R25 R26 R27 R28, 29, 30, 31 R32 R33 R35 R36 R37, 38 R41 Description 150k, CF, 1W, 5% 390Ω, Metal Oxide Film, 2W, 5% 7.
ELECTRICAL PART LIST Diodes Reference Designator D2, 3 D4, 5, 7, 8, 9 D6 Description Zener, 1N4736A, 6.8V 1N4148 Zener, 1N4735A, 6.2V Part Number 182961 182868 182962 Note Part Number 182913 Note Part Number 182965 Note Transistors Reference Designator Q1 Description NPN, 2N4123, TO-92, Small Signal Integrated Circuits Reference Designator U1 U2 U3 U4 U5 Description Opto-Isolator, PXSTR, CNY17-2.
ELECTRICAL PART LIST Display PCB Assembly Reference Designator A6 Description Assy, PCB Display, 1600VI/1800VI Part Number 182762 Note 1, 2, 4, 5 Part Number 182800 182908 182974 182976 182977 182978 182789 182979 182975 182793 Note Part Number 182973 182780 Note Part Number 182982 182868 Note Resistors Reference Designator R9, 10, 13, 17, 24, 35 R11, 18 R12, 19 R14, 36 R15, 20, 22, 25, 26, 28, 31, 34 R16, 21, 23, 27, 29, 32 R103, 149, 164, 203 R104, 204 R112, 212 R113, 142, 202, 213 Description
ELECTRICAL PART LIST Input Module PCB Assembly Reference Designator Description PCB Assy, Input Module, 1600VI/1800VI Part Number 182755 Note 1, 2, 4, 5 Part Number 183000 182995 182789 182996 182998 182852 182999 182790 182927 182997 182994 182951 Note Part Number 182992 Note Resistors Reference Designator R52, 53, 54, 55, 60, 62 R56 R57, 58, 61, 64, 69, 70, 76, 77 R59 R63 R65 R66 R72, 79 R73, 74, 75, 78, 80, 81, 82, 83 R84, 87 R85, 88 R86, 89 Description 332k, MF, 1/4W, 1% 120Ω, CF, 1/4W, 5% 10k,
ELECTRICAL PART LIST Transistors Reference Designator Q1 Q2, 3 Description NPN, MPSA06, TO-92 PNP, MPSA56, TO-92 Part Number 182874 182875 Note Part Number 183005 183004 182821 Note Part Number 183002 183001 182988 Note Integrated Circuits Reference Designator U1, 2 U3, 4, 5, 6 U7 Description Bal Line Rcvr, SSM2141 Op-Amp, w/Switch Dual Op-Amp, BiFET, TL072 Miscellaneous Reference Designator SW1 S2 J1 J2 J3 J4, 5 J6, 7 P1, 4 P2, 3 JB1, 2 Description Slide, DPTT, Rt Angle Slide, DPDT Header, 20 p
PACKING LIST 1600VI and 1800VI Amplifiers (see Figure 18) Item Number 1 2 3 4 5 - Description Box, Shipping, 1600VI 1800VI Sleeve, Cord holder, 13 1/4 x 12 Foam, Packaging, 2U Manual, Owners, 1600VI/1800VI Bag, Plastic, 20 x 30 Foot, Rubber, Blk, .81sq x .3h Part Number Qty. 199798 199799 182752 182753 180118 199775 199779 1 1 (4) 3 5 I 2 4 Figure 18.
6 FUSE SW LINECORD 56 F1 1 Figure 19.
WIRING DIAGRAMS LINE FL1 LOAD LINE FILTER L2 LINECORD BRN GRN/YEL BLU P1 L1 L1 BRN GRN/YEL BLU E1 W52 W7 W6 RED E3 SWITCH WHT E2 BLU/BLK PCB E1 SEQUENCE SWITCH FUSE TIP F1 W2 W1 W24 WL3 WL2 WL1 WL4 WL5 W3 WL7 E16 W60 WL6 RING W4 POWER SWITCH S1 J1 J1 E17 POWER SUPPLY BOARD REGULATOR BOARD (Not used in 1600VI Amp) Figure 20.
IC PINOUT DIAGRAMS 1 8 2 - 3 + 7 + 4 6 5 Front View 1. Output1 2. Inverting input1 3. Non-inverting input 1 4. -Vcc 5. Non-inverting input 2 6. Inverting input 2 7. Output 2 8. +Vcc Bose Part Number 182878, IRFZ44 Bose® Part Number 182821, TL072 1 8 2 - 7 3 + 6 + 4 5 1. Output1 2. Inverting input1 3. Non-inverting input 1 4. -Vcc 5. Non-inverting input 2 6. Inverting input 2 7. Output 2 8. +Vcc 8 2 - 3 + 4 7 + 6 5 1 6 2 5 3 4 1. Anode 2. Cathode 3. NC 4.
IC PINOUT DIAGRAMS 1. Comp 1 Output 2. Comp 1 Inv Input 3. Comp 1 Non-inv Input 4. Vcc 5. Comp 2 Inv Input 6. Comp 2 Non-inv Input 7. Comp 2 Output 8. Op-Amp 2 Output 9. Op-Amp 2 Inv Input 10. Op-Amp 2 Non-inv Input 11. VEE/GND 12. Op-Amp 1 Inv Input 13. Op-Amp 1 Non-inv Input 14. Op-Amp 1 Output 14 1 2 - + 13 3 + - 12 11 4 5 - + 10 6 + - 9 7 8 25k Ohm 8 25k Ohm 2 3 25k Ohm - 7 + 6 4 5 25k Ohm 6 2 5 3 4 1. Anode 2. Cathode 3. NC 4. Emitter 5. Collector 6.
SPECIFICATIONS AND FEATURES SUBJECT TO CHANGE WITHOUT NOTICE ® ® Bose Corporation The Mountain Framingham, Massachusetts USA 01701 P/N: 199747 Rev.
