Bose-1800V-pwr-sup7维修电路原理图.pdf

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1、1998 Bose CorporationPart Number 181812-S7 Rev. 00SupplementFreeSpace 360 Surface and In-groundLoudspeaker EQ CardsRadioFans.CN 收音机爱 好者资料库2CONTENTSElectrostatic Discharge Sensitive (ESDS) Device Handling . 3Supplement Description. 3Warranty Information . 3Theory of Operation. 4Equalizer Card Curve D

2、iagrams . 5Figure 1. FreeSpace 360 Surface EQ Curve. 5Figure 2. FreeSpace 360 In-Ground Soft Ground EQ Curve . 5Figure 3. FreeSpace 360 In-Ground Hard Ground EQ Curve. 5Test Procedures . 6-7Part List Notes. 8FreeSpace 360 EQ Card Part List . 9-10Packing List, FreeSpace 360 EQ card (see Figure 4). 11

3、Figure 4. FreeSpace 360 EQ Card Packing View. 11Figure 5. FreeSpace 360 Equalizer Board Topside and Etch Layout Diagram. 12Figure 6. FreeSpace 360 Equalizer Board SMD and Etch Layout Diagram . 12CAUTION: The FreeSpace 360 Equalizer Cardscontain no user serviceable parts. To preventwarranty infractio

4、ns, refer servicing towarranty service centers or factory service.PROPRIETARY INFORMATIONTHIS DOCUMENT CONTAINS PROPRIETARY INFORMATION OFBOSE 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

5、PRODUCT, AND SHALL NOT BE REPRODUCED OR USED FOR ANY OTHER PURPOSE.RadioFans.CN 收音机爱 好者资料库3(ESDS) DEVICE HANDLINGELECTROSTATIC DISCHARGE SENSITIVEThis unit contains ESDS devices. We recommend the following precautions when repairing,replacing, or transporting ESDS devices:Perform work at an electric

6、ally 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

7、 bags, bins, or totes. Do not insert unprotected devices into materials such as plastic, polystyrene foam, clear plastic bags, bubble wrap, or plastic trays.SUPPLEMENT DESCRIPTIONThis supplement should be used along with the 1800V EQ PCB service manual part number181812-S2. The disassembly/assembly

8、procedures, and packing part list should be used alongwith the information in this manual. The test procedures were included in this manual for yourconvenience.WARRANTY INFORMATIONThe FreeSpace Model 360 Loudspeaker Equalizer Cards are covered by a 5-yeartransferable limited warranty.4THEORY OF OPER

9、ATIONThese Equalizer cards are designed to be installed into the AmPlus 50 and 100 amplifiersand the Bose 1600 Series VI and 1800 Series V/VI amplifiers.The FreeSpace 360 loudspeaker requires equalization, and this equalization is a function ofthe installation. There are two variants of the card tha

10、t implement EQ curves for theseinstallation situations:In Ground (when the FreeSpace 360 loudspeaker is mounted in the ground).The appropriate EQ curve for soft or hard ground is selected with a slide switch on the card.When S1 is in the SOFT position, the Soft Ground EQ is used; when S1 is in the H

11、ARDposition, the Hard Ground EQ is used.In the Surface variant, S1 is omitted and jumpered to the SURFACE position.Note: Refer to the FreeSpace 360 Surface or In-Ground schematic diagrams, as appropriate,for the following explanation. The designators inside the brackets are the schematic gridcoordin

12、ates which are provided in order to make it easier to locate components on theschematic sheet indicated in the description. Components shown on the schematic asOPT (optional) are not used in that particular configuration.The input signal is applied to these cards at JP1 pin 4. The first section at t

13、he input, U2-B D7,combines a first order high-pass filter with one section of a parametric cut filter. The parametricis set for -15dB at 27Hz and provides a steep slope below about 80Hz. The equalization issegmented, with one block (U2 and U1), all sections D1-8 dedicated to bass region equaliza-tio

14、n. Following the output of this section, U2-A D1, the signal is presented to two parallelequalization paths, one comprised of U3 B4-7, U4-B C3, and dedicated to EQ for mountingin soft ground of the FreeSpace 360 loudspeaker. The other path, comprised of U5 B4-7,U4-A B3 provides equalization for the

15、FreeSpace 360 loudspeaker in hard ground installa-tions. In the case of the FreeSpace Surface EQ card, the bottom leg of the equalizer card isnot used.The operation of all three equalizers is similar. Considering the bass equalizer, we see U2-BsD7 output passed through R8 D7 and into the non-inverti

16、ng input of U2-A D2. This input isextended as a bus to which EQ sections Bass 1 D6 and Bass 2 D5 are connected. Thesewill introduce dips into the audio response to provide bass cut as required. Sections Bass 3D4 and Bass 4 D3 are connected to a bus extended from the inverting input of U2-A D2and pro

17、vide bass boost.See Figures 1,2 and 3 for the EQ curves for the various equalizer cards.Each of the EQ sections utilizes a gyrator-connected op-amp in conjunction with a seriescapacitance to simulate an LCR series tuned circuit. The values of the capacitors and resistorsare chosen to implement EQ di

18、ps and/or peaks at the appropriate frequency, amplitude and Qto realize the desired EQ curves. On the In-Ground EQ card, S1 B2 selects either the HARDor the SOFT mount EQ curve.The output signal is taken from JP1 pin 5, and returns to the amplifier. The equalizer cards aresensed by the amplifiers as

19、 follows. In the AmPlus 50 and 100 amplifiers, Pin 12 of J1 B2 isgrounded and is sensed by the dynamic EQ circuit on sheet 2 of the AmPlus 50 and 100schematic diagrams. In the 1600/1800 amplifiers, the input module detects the presence of EQcards via J7-6 and J6-6. Without the card installed these p

20、ins are pulled high (+15V). This logichigh signal is also applied to the control pins of the switch ICs which selects the A(unequalized) input. When an EQ is plugged into J7 and/or J6 pin 6, the EQ is detected andpulls the control pin low (+7.5V), turning on the corresponding LED(s) and switching th

21、e IC tothe B input which will then select the output of the EQ card to be passed on to the amplifier.EQUALIZER CARD CURVE DIAGRAMSFigure 1. FreeSpace 360 Surface EQ CurveFigure 2. FreeSpace 360 In-Ground Soft Ground EQ CurveFigure 3. FreeSpace 360 In-Ground Hard Ground EQ Curve56TEST PROCEDURES1.7 S

22、hut off the amplifier. Open the inputpanel and switch the Hard/Soft switch tothe HARD position.2. In Hard Ground FrequencyResponse Test2.1 Apply a 100 mVrms, 1kHz signal to theinput jack of the amplifier channel undertest.2.2 Adjust the amplifier volume controls tomaximum. No EQ card installed.2.3 R

23、eference a dB meter to the output ofthe amplifier.2.4 Shut off the amplifier and insert the EQcard according to the assembly procedure.2.5 Turn on the amplifier and measure thegain. There should be a -2.1 1.0 dBchange in gain at the output.2.6 Reference a dB meter and measurethe response according t

24、o the In HardGround Frequency Response chart.FreeSpace 360 In-Ground LoudspeakerTest Setup Parameters:1. Install the Equalizer card under test intoone of the Equalizer card jacks located onthe Input Module of the Bose 1600 or1800 Series amplifier, and perform thefollowing tests. Refer to the 1800V s

25、ervicemanual supplement part number 181812-S2 for more information.2. On the amplifier Input Module, placeswitch SW1 to the NORM position. Placeswitch S2 to the FULL BANDWIDTHposition.3. The input voltage shall be the actualinput voltage present at the input, not theopen circuit generator input.Note

26、: Place the Hard/Soft switch S1 to theSOFT position for the following tests.1. In Soft Ground Equalizer PCBFrequency Response Test1.1 Apply a 100 mVrms, 1kHz signal to theinput jack of the amplifier channel undertest.1.2 Adjust the amplifier volume controls tomaximum. No EQ card installed.1.3 Refere

27、nce a dB meter to the output ofthe amplifier.1.4 Shut off the amplifier and insert the EQcard according to the assembly procedure.1.5 Turn on the amplifier and measure thegain. There should be a 0.0 1.0 dBchange in gain at the output.1.6 Reference a dB meter and measurethe response of the EQ card ac

28、cording tothe In Soft Ground Frequency Responsechart.In Soft Ground Frequency ResponseFrequencyOutput Level30 Hz-10.3 dB 1.5 dB180 Hz+9.5 dB 1.5 dB190 Hz+7.8 dB 1.5 dB1000 HzReference3000 Hz+8.1 dB 1.0 dB4000 Hz+7.8 dB 1.0 dB10000 Hz+16.4 dB 2.5 dBIn Hard Ground Frequency ResponseFrequencyOutput Lev

29、el9 Hz+9.8 dB 1.5 dB30 Hz-8.3 dB 1.5 dB180 Hz+11.2 dB 1.0 dB800 Hz+0.8 dB 1.0 dB1000 HzReference3000 Hz+8.1 dB 1.0 dB4000 Hz+8.7 dB 1.0 dB10000 Hz+18.2 dB 2.5 dB71.6 Reference a dB meter and measurethe response of the EQ card according tothe Surface Frequency Response chart.2. Distortion Test2.1 App

30、ly a 780 mVrms, 1 kHz signal to theinput jack of the amplifier channel undertest.2.2 Measure the distortion level at theoutput of the amplifier. It should be 0.1%THD.TEST PROCEDURES3. Distortion Test3.1 Apply a 780 mVrms, 1 kHz signal to theinput jack of the amplifier channel undertest.3.2 Measure t

31、he distortion level at theoutput of the amplifier. It should be 0.1%THD.FreeSpace 360 Surface LoudspeakerTest Setup Parameters1. Install the Equalizer card under test intoone of the Equalizer card jacks located onthe Input Module of the Bose 1600 or1800 Series amplifier, and perform thefollowing tes

32、ts. Refer to the 1800V servicemanual supplement part number 181812-S2 for more information.2. On the amplifier Input Module, placeswitch SW1 to the NORM position. Placeswitch S2 to the FULL BANDWIDTHposition.3. The input voltage shall be the actualinput voltage present at the input, not theopen circ

33、uit generator input.1. Surface Equalizer PCB FrequencyResponse Test1.1 Apply a 100 mVrms, 1kHz signal to theinput jack of the amplifier channel undertest.1.2 Adjust the amplifier volume controls tomaximum. No EQ card installed.1.3 Reference a dB meter to the output ofthe amplifier.1.4 Shut off the a

34、mplifier and insert the EQcard according to the assembly procedure.1.5 Turn on the amplifier and measure thegain. There should be a +1.0 1.0 dBchange in gain at the output.Surface Frequency ResponseFrequencyOutput Level30 Hz-8.8 dB 1.5 dB90 Hz+7.2 dB 1.5 dB180 Hz+11.0 dB 1.5 dB900 Hz+0.2 dB 1.5 dB10

35、00 HzReference2000 Hz+0.4 dB 1.5 dB5000 Hz+6.7 dB 1.0 dB10000 Hz+17.9 dB 2.5 dB8PART LIST NOTES1. 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 Pa

36、rt 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. These parts are used on the FreeSpace 360 in-ground EQ card only.5. These parts are

37、 used on the FreeSpace 360 Surface EQ card only.9ResistorsFREESPACE 360 EQ CARD PART LISTCapacitorsReferenceDesignatorDescriptionPart NumberNoteC2 .22uF, BOX, 85, 50V, 5%137127-224 C5, 56390pF, MONO, COG, 50V, 5%140564-391 C6 .018uF, BOX, 85, 100V, 5%137127-183 C7 .0068uF, BOX, 85, 100V, 5%137127-68

38、2 5C7, 57, 87.0068uF, BOX, 85, 100V, 5%137127-682 4C8 .047uF, BOX, 85, 63V, 5%137127-473 C9, 10 .47uF, BOX, 85, 50V, 5%137127-474 5C11 .0015uF, BOX, 85, 100V, 5%137127-152 4C11 820pF, MONO, COG, 50V, 5%140564-821 5C12 .015uF, BOX, 85, 100V, 5%137127-153 4C12 .056uF, BOX, 85, 63V, 5%137127-563 5C13 .

39、0018uF, BOX, 85, 100V, 5%137127-182 5C13, 81, 82.022uF, BOX, 85, 100V, 5%137127-223 4C14 .0027uF, BOX, 85, 100V, 5%137127-272 4C14, 16.001uF, BOX, 85, 100V, 5%137127-102 5C15, 51.033uF, BOX, 85, 63V, 5%137127-333 C16 .01uF, BOX, 85, 100V, 5%137127-103 4C17 18PF, 0805, 50V, 5%133622-180 5C50, 58, 88.

40、0056uF, BOX, 85, 100V, 5%137127-562 4C50, 61.0033uF, BOX, 85, 100V, 5%137127-332 5ReferenceDesignatorDescriptionPart NumberNoteR1 2.00K, CHIP, 0805, 1%133625-2001 R2, 5, 12, 17,18, 24, 26, 28,30, 59, 64, 83,89JUMPER, CHIP, 0805133627 4R2, 5, 12, 17,18, 23, 26, 59,64JUMPER, CHIP, 0805 133627 5R3 18.2

41、K, CHIP, 0805, 1%133625-1822 R4 1.50K, 0805, 1/10W, 1%133625-1501 5R4 2.21K, CHIP, 0805, 1/10W, 1%133625-2211 4R8, 21 200K, 0805, 1/10W, 1%133625-2003 R9, 10, 19, 20392K, 0805, 1/10W, 1%133625-3923 5R13, 1428.7K, 0805, 1/10W, 1%133625-2872 R15, 16127K, 0805, 1/10W, 1%133625-1273 R19, 20169K, 0805, 1

42、/10W, 1%133625-1693 4R50, 63, 80, 9324.9K, CHIP, 0805, 1%133625-2492 R51, 5216.5K, CHIP, 0805, 1%133625-1652 5R55, 5610.0K, CHIP, 0805, 1%133625-1002 5R55, 5647.5K, CHIP, 0805, 1%133625-4752 4R57, 585.76K, CHIP, 0805, 1%133625-5761 5R57, 58, 87, 886.81K, CHIP, 0805, 1%133625-6811 R61, 62, 91, 924.87

43、K, CHIP, 0805, 1%133625-4871 4R81, 82, 51, 528.25K, CHIP, 0805, 1/10W, 1%133625-8251 R85, 8666.5K, 0805, 1/10W, 1%133625-6652 4R94 100, CHIP, 0805, 1%133625-1000 10FREESPACE 360 EQ CARD PART LISTCapacitorsIntegrated CircuitsReferenceDesignatorDescriptionPart NumberNoteU1, 3, 50P AMP QUAD, SOIC-14, N

44、JM2059 187472 4U2, 4OP AMP DUAL, SOIC-8, NJM4559 187473 MiscellaneousReferenceDesignatorDescriptionPart NumberNoteC52 .068uF, BOX, 85, 63V, 5%137127-683 4C52, 60.0047uF, BOX, 85, 100V, 5%137127-472 5C53 .0056uF, BOX, 85, 100V, 5%137127-562 5C53 270pF, MONO, COG, 50V, 5%140564-271 4C54 .0039uF, BOX,

45、85, 100V, 5%137127-392 4C54, 57, 58.0082uF, BOX, 85, 100V, 5%137127-822 5C55 .0027uF, BOX, 85, 100V, 5%137127-272 5C56, 86330pF, MONO, COG, 50V, 5%140564-331 4C59 560pF, MONO, COG, 50V, 5%140564-561 C59, 89560pF, MONO, COG, 50V, 5%140564-561 4C60, 90.0047uF, BOX, 85, 100V, 5%137127-472 4C61, 91.0033

46、uF, BOX, 85, 100V, 5%137127-332 4C62, 9268pF, 0805, COG, 50V, 5%133622-680 5C80 .0082uF, BOX, 85, 100V, 5%137127-822 4C83 220pF, MONO, 5%140564-221 4C84 .0022uF, BOX, 85, 100V, 5%137127-222 4C85 820pF, MONO, COG, 50V, 5%140564-821 4C98, 99.1uF, 1206, Z5U, 50V, 20%124958-1041 5C100, 101, 102,103, 104

47、, 105,106, 107, 108,109.022uF, 0805, X7R, 50V, 10%133623-223 4ReferenceDesignatorDescriptionPart NumberNoteJP1 CONN, HEADER, 12 PIN 149538 S1 JUMPER, CHIP 0805 133627 5S1 SPDT, VERTICAL, SLIDE 187481 411PACKING LISTFreeSpace 360 EQ card (see Figure 4)Figure 4. FreeSpace 360 EQ Card Packing ViewREF (

48、END CAP)12 PACKAGEDEQ CARDSPER CARTON12345ItemNumberDescriptionPart NumberQty.Note1OWNERS GUIDE, INST, EQ CARDS, PRO19191212PCB ASSY, FS 360 SURFACE EQ CARD19638012PCB ASSY, FS 360 IN-GROUND EQ CARD19638413BAG, ANTISTATIC, 4 X 7.517776114TUBE, PACKING, ROUND, PLUG-SEAL18417715CARTON, RSC, 9.63 X 7.8

49、8 X 6.631788531Figure 5. FreeSpace 360 Equalizer Board Topside and Etch Layout DiagramFigure 6. FreeSpace 360 Equalizer Board SMD and Etch Layout Diagram12P/N: 181812-S7 Rev. 00 10/98 FOR TECHNICAL ASSISTANCE OR PART ORDERS, CALL 1-800-367-4008Bose CorporationThe MountainFramingham, Massachusetts USA 01701SPECIFICATIONS AND FEATURES SUBJECT TO CHANGE WITHOUT NOTICE