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1、 harman/kardon HKSUB 12 Powered Subwoofer SERVICE MANUAL harman/kardon, Inc. 250 Crossways Park Dr. Woodbury, New York 11797 Rev1 9/2004 RadioFans.CN CONTENTS BASIC SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 DETAILED SPECIFICATION
2、S . . . . . . . . . . . . . . . . . . . .2 CONTROLS this can be accomplished by carefully pulling them out of the cavities with long-nosed pliers or similar tool. 3) Remove the (6) Phillips screws that are now exposed. 4) Remove the front baffle. 5) Remove the (8) screws that secure the woofer (the
3、screws may have a small adhesive pad atop each screw they will have to be moved or removed); remove the woofer and unplug the wires from the terminals. 6) To service the amplifier, remove the (10) Phillips screws at the rear of the enclosure, and pull the amplifier out of the back. 11 H HK KS SU UB
4、B1 12 2 h ha ar rmma an n/ /k ka ar rd do on n 12 H HK KS SU UB B1 12 2 h ha ar rmma an n/ /k ka ar rd do on n HKSUB12 AMPLIFIER EXPLODED VIEW 13 HKSUB12 harman/kardonHKSUB12 harman/kardon HKSUB 12 BLOCK DIAGRAM Test Set Up and Procedure Equipment needed: Function/signal generator/sweep generator In
5、tegrated Amplifier Multimeter Speaker cables Initial Control Settings: Power Switch OFF; Filter OFF Crossover Frequency 150Hz (Full CW) Level MIN (Full CCW) Phase, Standby switches do not matter General Unit Function (UUT = Unit Under Test) 1) From the signal generator, connect one line level (RCA)
6、cable to the Subwoofer Line Level Input jacks L/R on the UUT. Use a Y-cable from a mono source if necessary to connect to both inputs. Do not connect to the single, purple SUB input. 2) Turn on generator; adjust to 90mV, 50 Hz. 3) Plug in UUT; turn the power switch ON. LED should switch from Red to
7、Green. Turn LEVEL control full clockwise (MAX) 4) LED should Green; immediate and vigorous bass response should be heard and felt from port tube opening. 5) Turn off generator, turn LEVEL control full counterclockwise (MIN), and disconnect RCA cable. 6) Connect one pair of speaker cables to Speaker
8、Level input terminal (IN) 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 input at the amplifier is 1.5V, 50 Hz. Turn LEVEL control full clockwise. 8) Green LED should light; immediate and vigorous bass
9、response should be heard and felt from the port tube opening. Sweep Function 1) Follow steps 6-8 above, using a sweep generator as a signal source. 2) Sweep generator from 20Hz to 300Hz. Listen to the cabinet and drivers for any rattles, clicks, buzzes or any other noises. If any unusual noises are
10、heard, remove woofers and test. Driver Function 1) Remove woofer from cabinet (instructions on exploded view drawing); detach + and - wire clips. 2) Check DC resistance of woofer; it should be 3.3 ohms 10% 3) Connect a pair of speaker cables to driver terminals. Cables should be connected to an inte
11、grated 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. 14 H HK KS SU UB B1 12 2 h ha ar rmma an n/ /k ka ar rd do on n 15 HKSUB12 harman/k
12、ardonHKSUB12 harman/kardon 16 HKSUB12 harman/kardonHKSUB12 harman/kardon HKSUB 12 Electrical Parts List PART NO.DESCRIPTIONREFERENCE DESIGNATORQTY Resistors 110- 12472j52Resistor4.7K 1/2W 5% CF R201,2022 110- 14103j26Resistor 10K 1/4W 5% CF R503,504,5103 110- 14222j26Resistor 2.2K 1/4W 5% CF R5111 1
13、10- 14432j26Resistor 4.3K 1/4W 5% CF R5061 110- 14472j26Resistor 4.7K 1/4W 5% CF R5051 110- 16102j26Resistor 1K 1/6W 5% CF R153,213,214,215,2545 110- 16103j26Resistor 10K 1/6W 5% CF R128,130,149,150,209,212,216,217,218,220,221,222, 225,228,229,230,232,234,235,240,248,260,270,305, 306,308,311,314,319
14、 29 110- 16104j26Resistor 100K 1/6W 5% CF R122,126,231,263,266,3076 110- 16105j26Resistor 1M 1/6W 5% CF R2591 110- 16122j26Resistor 1.2K 1/6W 5% CF R2651 110- 16124j26Resistor 120K 1/6W 5% CF R2331 110- 16151j26Resistor 150 1/6W 5% CF R2531 110- 16153j26Resistor 15K 1/6W 5% CF R1071 110- 16154j26Res
15、istor 150K 1/6W 5% CF R2521 110- 16182j26Resistor 1.8K 1/6W 5% CF R1451 110- 16183j26Resistor 18K 1/6W 5% CF R2621 110- 16203j26Resistor 20K 1/6W 5% CF R237,238,3093 110- 16205j26Resistor 2M 1/6W CF R2573 110- 16221j26Resistor 220 1/6W 5% CF R1441 110- 16222j26Resistor 2.2K 1/6W 5% CF R1021 110- 162
16、23j26Resistor 22K 1/6W 5% CF R247,255,256,3164 110- 16303j26Resistor 30K 1/6W 5% CF R223,2242 110- 16333j26Resistor 33K 1/6W 5% CF R3101 110- 16393j26Resistor 39K 1/6W 5% CF R1511 110- 16472j26Resistor 4.7K 1/6W 5% CF R200,207,2583 110- 16473j26Resistor 47K 1/6W 5% CF R106,129,219,249,250,251,2647 1
17、10- 16474j26Resistor 470K 1/6W 5% CF R127,3122 110- 16512j26Resistor 5.1K 1/6W 5% CF R210,2112 110- 16562j26Resistor 5.6K 1/6W 5% CF R1521 110- 16621j26Resistor 620 1/6W 5% CF R1601 110- 16682j26Resistor 6.8K 1/6W 5% CF R226,2272 110- 16751j26Resistor 750 1/6W 5% CF R3151 110- 16755j26Resistor 7.5M
18、1/6W 5% CF R3131 110- 16913j26Resistor 91K 1/6W 5% CF R203,204,205,2064 116- 161002f26P.T.C. 10K 1/6W 1% MF R301,3032 116- 161102f26P.T.C. 11.0K 1/6W 1% MFR3021 116- 162200f26P.T.C. 220 1/6W 1% MFR3171 116- 162202f26P.T.C. 22.0K 1/6W 1% MFR3181 110- 20332jk3Resistor 3.3K 2W 5% R1341 113- 50s68j00Cem
19、ent Res. 0.068 5W 5% R1471 115h203b201Variable Res. 20KB/2VR2021 115h503a102Variable Res. 50KAVR2011 116- 201001jk3xMetal Res. 1.00K 2W 5% R1481 116- 304700jk2xMetal Res. 470 3W 5%R501,5022 1091ttc802j0Resistor TTC- 802(JS) NTC TH11 Capacitors 129- a154j633Metallze Cap. 0.15U 63V 5% MSCC221,2222 129
20、- a224j633Metallze Cap. 0.22uF 63V 5% MSCC2181 17 HKSUB12 harman/kardonHKSUB12 harman/kardon PART NO.DESCRIPTIONREFERENCE DESIGNATORQTY 1302b101k503Disc Cap. 100P 50V 10% C302,303,3063 130- 2b221k503Disc Cap. 220P 50V 10% C200,204,205,207,208,210,211,212,214,220,230,23712 130- 2b470k503Disc Cap. 47P
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