Infinity-BU1-sub-sm 电路图 维修手册.pdf

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1、BU1 Powered Subwoofer A Harman International Company Part No.: 1112-BU1 11/98 Technical ManualTechnical Manual INFINITY SYSTEMS INC. 250 Crossways Park Drive Woodbury, New York 11797 RadioFans.CN 收音机爱 好者资料库 1 Powered SubwooferBU1 BU1 SPECIFICATIONS Driver.8 Woofer Nominal Impedance .4 ? Enclosure De

2、sign.Tuned Port Amplifier Power.50 watts RMS Frequency Response.45Hz - 150Hz ( 3dB) Crossover Frequency.50 to 150 Hz Continuously Variable Inputs Line Level .RCA jacks High Level .(Speaker) Input terminals Outputs.Full range Speaker Sensitivity Low Level .50mV High level .1V Input Impedance Low Leve

3、l .10k? High level .4.7k? Dimensions Inches.11 x 11 x 11 Metric.29.2 x 29.2 x 29.2cm plus 1 (32mm) for feet Occasional refinements may be made to existing products without notice, but will always meet or exceed original specifications unless otherwise stated. TABLE OF CONTENTS BU1 SPECIFICATIONS .1

4、BU1 CONTROLS AND THEIR FUNCTION .2 BU1 TEST PROCEDURE.3 BU1 AMPLIFIER BLOCK DIAGRAM.4 BU1 CABINET EXPLODED VIEW .5 AMPLIFIER EXPLODED VIEW.6 BU1 MECHANICAL PARTS LIST .7 BU1 ELECTRICAL PARTS LISTS .8 BU1 PACKAGING EXPLODED VIEW .10 INTEGRATED CIRCUIT DIAGRAMS.11 PCB (TOP VIEW, component side).12 PCB

5、 (BOTTOM VIEW, solder side).13 PREAMP/CROSSOVER SCHEMATIC 120V .14 AMPLIFIER SCHEMATIC 120V .15 THIS MANUAL IS FOR THE BU1 REVISION WITHOUT AN EXTERNAL POWER SWITCH RadioFans.CN 收音机爱 好者资料库 2 Powered SubwooferBU1 BU1 CONTROLS AND THEIR FUNCTION 120V,60Hz 130W LOW LEVEL INPUT R L L L R R POWER 50 50 1

6、50 100 80 120 VOLUME CONTROL WARNING:TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE. NRTL/C UL-1492 CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN WARNING: SHOCK HAZARD-DO NOTOPEN. AVIS: RISQUE DE CHOC ELECTRIQUE-NE PAS OUVRIR. 120V60Hz 130W MODEL BU1HCM N

7、OTSUITABLE FOR IN-WALLMOUNTING ONOFF HIGH LEVEL INPUT HIGH LEVEL OUTPUT FREQUENCY Hz AUTO POWER MINMAX 1 2 3 5 4 1. Auto Power - This Auto On/Off switch controls whether the BU1s Automatic turn-on circuit is active. When the switch is ON , the BU1 will turn itself on, indicated by a green LED, when

8、it is plugged in and receiving a signal. When the BU1 has not received a signal for approximately ten minutes, the unit will revert to the STANDBY mode, indicated by a red LED. When this switch is OFF, the unit will revert to the STANDBY mode and will stay OFF, regardless of input signal. THIS IS NO

9、T A TRUE AC POWER SWITCH AS IT DOES NOT DISCONNECT THE AMPLIFIER FROM THE 120VAC LINE. 2. High Level Inputs - These High Level Inputs are for receivers that do not have line-level “pre-amp out” or “subwoofer out” jacks. When a pair of main or satellite speakers are attached to the OUTPUT terminals,

10、they are driven the full range of frequencies as generated by the music source (receiver, amplifier, etc.) 3. Low Level Input - These left and right Line Level Inputs are normally used when the receiver/processor has line-level “pre-amp out ” or “subwoofer out” jacks. If a single cable mono or subwo

11、ofer source is connected to the BU1, a Y-cable must be connected to the subwoofer for full output. 4. Volume Control - This controls the volume level of the subwoofer. 5. Frequency - The Frequency adjustment determines the upper corner roll-off point for the BU1. RadioFans.CN 收音机爱 好者资料库 TEST PROCEDU

12、RE Equipment needed: ?Function/signal generator/sweep generator ?Integrated Amplifier ?Multimeter ?Cables - line level (RCA) and speaker cables General FunctionUUT = Unit Under Test 1.Connect both right and left line level inputs (RCA) to signal generator and UUT. Use Y-cable if necessary from mono

13、source. VOLUME control should be full counterclockwise. 2.Turn on generator, adjust to 25mV, 50 Hz. 3.Plug in UUT; red LED should be ON. Turn VOLUME control full clockwise. 4.LED should turn Green; immediate bass response should be heard and felt from port tube opening. 5.Turn off generator, turn VO

14、LUME control fully counterclockwise, disconnect RCA cables. 6.Connect one pair of speaker cables to either high level input terminal on UUT. Cables should be connected to an integrated amplifier fed by the signal generator. 7.Turn on generator and adjust so that speaker level output is 1.0V, 50 Hz.

15、Turn VOLUME control full clockwise. 8.Green LED should light, immediate bass response should be heard and felt from port tube opening. Sweep Function 1.Follow steps 1 - 4 above, using a sweep generator as a signal source. 2.Sweep generator from 20Hz to 300Hz. Listen to the cabinet and drivers for an

16、y rattles, clicks, buzzes or any other noises. If any unusual noises are heard, remove driver and test. Driver Function 1.Remove driver from cabinet; detach + and - wire clips. 2.Check DC resistance of driver; it should be 3.3 ohms. 3.Connect a pair of speaker cables to driver terminals. Cables shou

17、ld be connected to an integrated amplifier fed by a signal generator. Turn on generator and adjust so that speaker level output is 5.0V. 4.Sweep generator from 20Hz to 1kHz. Listen to driver for any rubbing, buzzing, or other unusual noises. 3 Powered SubwooferBU1 BU1 TEST PROCEDURE 4 Powered Subwoo

18、ferBU1 BU1 AMPLIFIER BLOCK DIAGRAM 5 Powered SubwooferBU1 BU1 CABINET EXPLODED VIEW 6 Powered SubwooferBU1 AMPLIFIER EXPLODED VIEW 3 2 5 6 7 8 13 9 12 10 19 19 16 16 18 17 17 18 20 14 15 21 3 11 4 4 1 BU1 Amplifier Exploded View E E D D C C B B A A 7 7 6 6 5 5 4 4 3 3 2 2 1 1 7 Powered SubwooferBU1

19、BU1 MECHANICAL PARTS LISTS Ref. #Part #DescriptionQty. 1XX1342GASKET 1 OF 44 2XX1275Plastic Cover For Inf. Bu-1(2)1 3XX1250Strain Relief SPT-1 Black2 4SC1194Screw 6-32x3/8 Tapt-Thr Hex Washr2 5NU1049Nut 8-32 x 1/4 Hex Keps Sink F2 (XFORMER) 6MI1210POWER TRANSFORMER BU-11 7NU1059Nut 4-40Keps-Thr,Hexa

20、g. Znk Fs2 (THERMOSWITCH) 8XX1343KNOB BLACK2 9SC1215Screw M3x1.25x10 Plas-Thr Pan-Phi3 (SPK CONNECTOR, RCA CONNECTOR) 10SC1214Screw 8-32x1/2 Mach-Thr Pan-Phil2 (XFORMER) 11SC1253Screw 4-40 x3/8 Pan Phillips Hd Mc2 (THERMOSWITCH) 12HA1132HARNESS AC CORD BU-1/BU-21 (FRONT PLATE) 13SW1082THERMOSWITCH 6

21、0 DEG C PANEL1 MOUNTED FASTON TERM (FRONT PLATE) 14SP1082SPONGE W/ADHESIVE L=1/4 W=1/42 T=3/16 (BIAS XTOR, THERMISTOR) Ref. #Part #DescriptionQty. 15SP1073Sil Pad TO-220 0.750 x 0.5002 16BR1395Bracket Pwr Support2 17NU1057Hex Nut Keps 6-32 Zinc Fsh2 (BRACKET SUPPORT) 18BR1566FIN-XTOR BAR TO-218 USED

22、 ON BU12 19SC1285SC 6-32 x 3/4” MACH-THR PAN PHI4 HEAD BLACK ZINC FSH (XTOR BAR TO2182X, BRACKET SUPPORT2X) 20HA1218SPK HARNESS AWG 18 MOLEX TO1 FASTON .187 AND .250 (PLASTIC COVER) 21BR1537FRONT PLATE BU-11 XX1369GASKET PWR XMER 4.20 x 1.45 x1 1/16 (FRONT PLATE) NOT SHOWN 8 Powered SubwooferBU1 Ref

23、.#Part #DescriptionQty. Capacitors C1, 2CP1545CAP ALUM ELECT 4700uF 20% 50V2 SNAP-IN 30 x25mm C3, 4, 5, 11CP1552SMD Cap .1uF 20% 100v Z5U 12104 C6, 7, 15, 16,CP1426SMD CAP 0.1uF 20% 50V Z5U14 21, 22, 25,1206 T/R 110, 111, 115, 116, 117, 126, 127 C8, 9, 12CP1475SMD Cap 33pF 5% 50v NPO 12063 C10, 23,

24、24, 133CP1496SMD CAP 100pF 10% 50V X7R 12064 C13CP1412Cap Alum El. 47uF 20% 16v Rad.1 C14CP1528SMD CAP 0.1uF 10% 50V X7R 1206 T/R 1 C18, 19, 27,CP1645Cap Al El 22uF 20% 63V 85 Deg5 28, 32 C26CP1562Cap Alum El. 330uF 20% 16v T/R1 C29CP1808Cap Poly Fil 0.01uF Class X21 C30, 31CP1844SMD CAP CERAMIC 0.0

25、1uF 10%2 200V X7R 1206 T/R C101, 102, 103,CP1415Cap Alum El. 2.2 uF 20% 50v T/R5 104, 113 C107, 119, 120CP1424Cap. Alum El. 10uF 20% 16V T/R3 C108, 109, 118CP1646SMD Cap 220pF 5% 50V X7R 12063 C112CP1417Cap Alum El. 22uF 20% 16v T/R1 C114CP1411Cap Alum El. 100uF 20% 16v T/R1 C121, 122CP1539Cap. Poly

26、 Fil .047uF 5% 63V TR2 C124CP1679Cap. Poly Fil .068uF 5% 63V1 C125CP1632Cap.Poly.Film0.033uF,5%, 63VT/R1 Diodes D1, 2, 3, 4DI1005Rectifier Diode 3A/200V 1N54014 D5, 6, 7, 8, 9,DI1132SMD Diode Swch LL-34 Pkg T/R13 15, 16, 17,RLS4148 18, 101, 102, 103, 104 D14DI1010Diode Fast Rect. 1A/100v Axial1 Z101

27、, 102DI1127SMD Zener 5.6v 5% CP Pkg. T/R2 Z1, 2DI1150SMD Zener 15v 5% CP Pkg. T/R2 Ref.#Part #DescriptionQty. Integrated Circuits IC1, 102, 103IC1041IC SMD DUAL J-FET-INPUT3 OP AMP T/R TLO72 IC101IC1162IC SMD Quad-J Fet Input OP Amp1 TLO74 Resistors J1, 2, 3, 4, 5,RS1779SMD RES ZERO ohm 5% 1/8W 1206

28、16 6, 7, 101, 102, 103, 104, 105, 106, 107, 108, 109 R1, 2RS2310RES CER 0.1 ohm 5% 3W2 RADIAL BULK R3, 4RS1916RES C/F 5.1 ohm 5% 1/4W T/R2 R5RS1994RES C/F 100 ohms 5% 1/4W T/R1 R6, 20, 21, 34RS1831SMD RES 7.5Kohm 5% 1/8W 12064 R7RS1871SMD RES 5.1Kohm 5% 1/8W 12061 R8RS1878SMD RES 10 ohm 5% 1/8W 1206

29、1 R9, 10, 26, 35,RS1701SMD RES 10Kohm 5% 1/8W 120614 40, 43, 44, 54, 109, 110, 111, 113, 121, 123 R11, 12, 15, 17RS1717SMD RES 100 ohm 5% 1/8W 12064 R13, 14, 32, 57RS1722SMD RES 470 ohm 5% 1/8W 12064 R16, 23, 41RS1706SMD RES 47Kohm 5% 1/8W 12063 R18, 39, 119RS1703SMD RES 2.2Kohm 5% 1/8W 12063 R19, 2

30、2RS1725SMD RES 15Kohm 5% 1/8W 12062 R24, 126, 134,RS1700SMD RES 1Kohm 5% 1/8W 12064 136 R25, 118RS1710SMD RES 3.3Kohm 5% 1/8W 12062 R27, 28, 29RS1898SMD RES 10Kohm 1% 1/8W 12063 R30RS2160SMD RES 11Kohm 1% 1/8W 12061 R31, 124, 138RS1767SMD RES 1Mohm 5% 1/8W 12063 R33RS1877SMD RES 4.3Kohm 5% 1/8W 1206

31、1 R36, 37RS2424RES M/O F/P 220 ohm 5% 1W T/R2 R38, 55, 58,RS1705SMD RES 4.7Kohm 5% 1/8W 12068 101, 106, 107, 108, 139 R42, 102, 103,RS1702SMD RES 100Kohm 5% 1/8W 120610 104, 105, 116, 122, 128, 137, 142 BU1 ELECTRICAL PARTS LISTS Ref.#Part #DescriptionQty. R51, 52RS1715SMD RES 5.6Kohm 5% 1/8W 12062

32、R56RS1005RES C/F 100 ohms 5% 1/2W T/R1 R112RS1872SMD RES 51Kohm 5% 1/8W 12061 R114RS1793SMD RES 470Kohm 5% 1/8W 12061 R117RS1968SMD RES 2.2Mohm 5% 1/8W 12061 R120RS1892SMD RES 10Mohm 5% 1/8W 12061 R125RS1883SMD RES 1.5Kohm 5% 1/8W 12061 R129RS1783SMD RES 12Kohm 5% 1/8W 12061 R131RS2419SMD RES 430Koh

33、m 5% 1/8W 12061 R132, 133, 140RS1704SMD RES 22Kohm 5% 1/8W 12063 R135RS1712SMD RES 43Kohm 5% 1/8W 12061 R141RS1791SMD RES 39Kohm 5% 1/8W 12061 Transistors Q1TR1346TIP35C1 Q2TR1347TIP34C1 Q3TR1183TIP31C1 Q4TR1184TIP32C1 Q5, 18TR1043MPS2222A2 Q6, 9, 15, 20TR11662N54014 Q7, 8TR11672N55512 Q10, 12, 16TR

34、1131DTC114TK3 Q11TR11082SC2412K1 Q17, 101, 102TR11252SZ1037K3 Q19TR10102N2907A1 Ref.#Part #DescriptionQty. Miscellaneous CONN101CO1334JACK SPEAKER OCTAL PC1 MOUNT RIGHT ANGLE F1FS1086FUSE SLO-BLO 1A 250V 5x20 3AG1 FUSE1XX1297Fuse Clip 5x20 PC Mount2 HARNESSHA1186HARNESS 7-POSITION 0.11 CENTER-CENTER

35、 L=4 (Connects Power Board to PreAmp/ Cross-Over Board) K1RE1026RELAY PC MOUNT 24V 6A1 L1MI1100Inductor Air Core 0.38uH1 LED101LE1032Led Bicolor Red/Green 5mm1 PCBS (BLANK)CL1232BLANK PCBs WITH CONNECTOR1 RCA102CO1407CONNECTOR RCA DUAL VERT.1 PC MOUNT WHT/RED R/A GOLD SW101SW1084SWITCH SLIDE DPDT R/

36、A PC MOUNT1 SPKOUTCO1343Strght Sq Hdr 0.156Center1 T1MI1210POWER TRANSFORMER BU11 TH1TH1006NTC THERMISTOR 10Kohm 25DegC1 VR101RS2426POT 20K DUAL 16mm B-TAPER1 VOLUME VR102RS1794POT 50Kohm 20% LOG TAPER 15A1 FREQUENCY 9 Powered SubwooferBU1 10 Powered SubwooferBU1 BU1 PACKAGING EXPLODED VIEW 11 Power

37、ed SubwooferBU1 INTEGRATED CIRCUIT DIAGRAMS 12 Powered SubwooferBU1 PRINTED CIRCUIT BOARDS (TOP VIEW, component side) 13 Powered SubwooferBU1 PRINTED CIRCUIT BOARDS (BOTTOM VIEW, solder side) 14 Powered SubwooferBU1 PREAMP/CROSSOVER SCHEMATIC 120V VERSION 15 Powered SubwooferBU1 POWER SCHEMATIC 120V VERSION