User manual HAFLER SE120 - service manual

THE Hafler SE120 POWER AMPLIFIER POWER AMPLIFIER SERVICE MANUAL HAFLER A DIVISION OF ROCKFORD CORPORATlON 613 SOUTH ROCKFORD DRIVE TEMPE, ARIZONA 85281 SPECIFICATIONS POWER RATING: Less than 0.006% total harmonic distortion at any power level up to 60 watts continuous average power per channel into 8 ohms at any frequency between 20 Hz and 20 kHz with both channels driven. IM DISTORTION (IHF): Less than 0.005% from 1 to 60 watts, each channel, into 8 ohms. TYPICAL THD AT 60 WATTS INTO 8 OHMS: 20 Hz: 0.002% 1 kHz: 0.002% 20 kHz: 0.006% FREQUENCY RESPONSE INTO 8 OHMS: -3dB, 4Hz to 2OOkHz at 1 watt. +OdB, -0.5dB,1OHz to 4OkHz at 60 watts. TYPICAL CHANNEL SEPARATION: 2OHz: > 75dB 1kHz: > 85 dB 20kHz: > 65dB SIGNAL TO NOISE RATIO, UNWEIGHTED: Exceeds 1OOdB referred to 60 watts into 8 ohms. INPUT IMPEDANCE: 22,000 ohms INPUT SENSITIVITY: 1.1 volts rms for 60 watts into 8 ohms. DAMPING FACTOR: 100 to 1kHz into 8 ohms, 50 to 1OkHz into 8 ohms. POWER CONSUMPTION: 60 watts both channels into 8 ohms: 300 VA Quiescent: 60 VA SIZE: 3-1/4" high plus 1/2" feet, 17" wide, 9" deep. (83 mm high plus 152 mm, 432 mm wide, 229 mm deep.) NET WEIGHT: 18 lbs. (8.2 kg) SHIPPING WEIGHT: 20 lbs. (9.1 kg) ALL SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE. Stereo/Mono Channel Operation: The SE120 delivers 60 watts continuous average power per channel into 8 ohms. It can be bridged for single channel operation producing up to 120 watts of power into 16 ohms. Input Mode Selector: This switch will allow the user to specify the input signal to the amplifier. A. Stereo Mode: This allows the right and left channels to reach their designated amplifier channels. This mode will deliver more than 60 watts into an 8 ohm load. B. Mono Mode: The SE1 20 can be operated in a bridged mode which drives both channels with the same signal and combines to deliver more than 150 watts into 8 ohms. This disables the right channel input and routes the signal through the left channel. Construction: The simplified construction of the SE120 improves reliability and results in consistent performance. The heavy duty case construction on the SE120 will provide years of durability and trouble free protection. Gold Plated RCA Input Connectors: This provides the most accurate signal transmission and lowest possible loss. Gold-plated terminals are immune to signal deterioration with time that can be caused by corrosion in the connectors. Speaker Output and Power Connectors: For minimum loss power transfer, high definition and oxidization resistance. Protection System: The SE120 is equipped with a unique protection system that constantly monitors the temperature of the output devices and takes corrective action to prevent damage to the amplifier as a result of excessive overheating. @ Copyright 1990. All rights reserved -l- LINE CONNECTIONS AND SWITCHING The SE120 is normally wired for use on 12OV AC power lines, as in the U.S.A. If your line voltage is different, you will need the special Hafler export power transformer which accommodates many other line voltages. Be sure your amplifier is wired for your line voltage before you plug it in. The SEl2O's power switch may be left on, and the amplifier switched remotely by connecting its line cord to the preamplifier (or other control center) which provides a switched AC outlet. Make sure that the control device can supply a current of 5 amperes to the SE 120, in addition to the current required by any other switched units. You may instead connect the amplifier directly to a wall outlet, and control it with its own front panel power switch. no frayed wire ends which could touch adjacent terminals or the chassis. Tin bare wire ends with solder to secure all strands. PHASING: Consistent phase relationships are important when connecting speakers in order to enable full bass reproduction as well as midrange and high frequency time alignment. To be sure all speakers in a system are wired in phase to the amplifier, each ground or - speaker terminal should be connected to its black ground tenninal on the SE 120 and the speakers + terminal to the corresponding red binding post. Speaker connecting cable identifies one wire from the other by the color of the wire, or by marking or coloring the insulation. NOTE: In the special case of monophonic operation of the SE 120, (described later) different speaker connections are employed. GROUNDING: The black output terminals of the SE120 are connected together internally and grounded to the chassis. This facilitates the use of external devices which use a common ground connection, such as some headphone junctionboxes. You must be sure that the ground or shield connection from such a device goes to a black terminal on the SE1 20. NOTE: No such connection may be made when the SE120 is connected for bridged mono operation. CONNECTING CABLES INPUT: Conventional shielded cables, often supplied with preamplifiers, may connect the control center to the amplifier's input jacks. Be sure the cables are not frayed or loosely connected to the plugs, and that the plug's outer shield connection is tight on the jack, to avoid hum. If you wish to install the SE120 more than a few feet from the preamplifier, the permissible cable length to avoid loss of high frequencies is determined by the preamplifier's output impedance and the internal capacitance of the cable. If the output impedance is 600 ohms or less, as with Hafler preamplifiers, and the cable capacitance is less than 50 picofarads per foot, up to 50- feet is acceptable. Ordinary stereo interconnecting cables often have higher capacitance, however, so a good quality low capacitance shielded wire should be used. When making long runs, keep the left and right cables close together, and avoid running them parallel to power wiring to reduce the likelihood of hum pickup. OUTPUT: The wires which connect the speakers to the amplifier should be of sufficient size to preserve the SEl2O's high Standard #18 gauge lamp cord damping factor. Standard #18 gauge lamp cord is satisfactory for up to 15 feet if your speakers are of 8 ohms or higher impedance. A heavier gauge (#16 or larger) wire should be #16 used with 4 ohm speakers or 8 ohm speakers at a greater distance. Special loudspeaker cables which have adequate thickness to accommodate long runs are usually available from audio dealers. The SEl2O's red and black outputs accept standard banana plug connectors, including the double ones with 3/4" spacing. These are the most convenient to use if you will be disconnecting the speakers occasionally. The terminals will also clamp a spade lug, or a bare wire through the hole in the center post. Be sure there are -3- CONVENTIONAL STEREO CONNECTIONS It is best to make all connections with the SE120 switched off. Each of the stereo speakers connects to one horizontal pair of red and black outputs, as identified left or right on back of the SE 120. The input signals connect to the corresponding input jacks, and the mono/stereo switch should be set to stereo. CONNECTIONS FOR MONOPHONIC OPERATION When you wish to drive a single loudspeaker with increased power capability, the SE120 can be operated in a bridged mode which drives both channels with the same signal and combines their output to deliver more than 120 watts into 16 ohms. In this arrangement, the speaker is connected only to the two red output terminals. The left red terminal is + and the right red terminal is the - connection. NO CONNECTIONS MAY BE MADE TO ANY BLACK TERMINAL!! Set the Input Mode Selector switch to mono, and connect the input signal to the left channel input only. IMPORTANT NOTE: Never use a speaker with an impedance of less than 8 ohms when operating the SE120 in the bridged mono mode. The increased current could overheat the amplifier. TRANSISTOR VOLTAGE VALUESDC volts with respect to circuit ground, no signal applied. OPERATION The pilot lamp in the power switch will glow whenever power is applied to the SEl20. If it does not light, check for a blown AC line fuse. The SE 120 is equipped with a unique protection system that constantly monitors the temperature of the output devices and takes corrective action to prevent damage to the amplifier as a result of excessive overheating. Under most conditions, the SE120 heatsinks will dissipate the heat required to maintain safe operating temperatures, and the unit will play continuously. If the amplifier is driven at high volumes into speakers with an impedance of less than 8 ohms, and/or there is inadequate ventilation, the heatsinks could heat to a level that would cause the protection circuitry to shut off the amplifier for a short time (normally less than 15 seconds) to prevent damage. The SE120 will return to normal operation, and if the overheating condition is still present, the cycle will repeat. In this case, check the surroundings of the unit to insure sufficient air flow around the heatsinks and through the vent holes. Otherwise, check the load impedance connected to the outputs to see if it is far below 8 Ohms. FUSES: The SE120 is supplied with a 5 Ampere Slo-Blo AC line fuse and four power supply fuses. If one of these fails, it is usually indicative of a fault which will require professional service. Bias current adjustment for the SE 120 needs to be performed in the following manner: 1. No signal applied to the input, no load on the output of the amplifier. 2. Line voltage to the amplifier should be set at the nominal value for the area. 3. Adjust one channel at a time. 4. With the unit off, remove either the + or - rail fuse in the right channel. Insert the ammeter across the fuse holder. Make sure that the ammeter is set at its highest current scale. 5 Turn the unit on and, after the unit has warmed up for approximately one minute, adjust the ammeter reading for lOOmA. Turn the unit off. AlIow the unit to discharge before removing the ammeter and replacing the fuse. 6. Repeat steps 4 and 5 for the left channel. NAME Ql Q2 Q3 Q4 Q5 Q6 Q7 Q8 Q9 QlO Qll Q14 Ql5 Ql6 Q17 Ql8 Ql9 Q20 Q21 Q22 Q23 Q24 Q27 Q28 Emitter -.755 -.756 52.3 52.3 51.4 52.1 51.0 -1.157 -51.4 -.578 .711 -.737 -.755 -.756 52.3 52.3 51.4 52.1 51 .0 -1.157 -51.4 -.578 -.518 -.737 Base -.130 -.159 51.7 51.8 50.9 51.5 50.4 -.532 -50.7 -1.153 1.303 -.126 -.130 -.159 51.7 51.8 50.9 51.5 50.4 -.532 -50.7 -1 .I53 -.088 -.126 co llector 51.5 51.7 51.5 51.8 -12.90 50.5 1.294 1.314 -1.151 -53.5 53.5 51.5 51.5 51-7 51.5 51.5 -12.90 50.5 1.294 1.314 -1.151 -53.5 -53.8 51.5 Q12 Ql3 Q25 Q26 Source .778 -.518 .778 -.518 Gate .087 -.088 .087 -.088 Drain 53.8 -53.8 53.8 -53.8 IC VOLTAGE VALUES IC PIN # 1. -48.9 2. -52.2 3. -49.7 4. -53.9 6. -52.1 7. -48.7 8. -38.5 -DCV -54.0 +DCV 54.0 4- ELECTRICAL PARTS LIST ELECTRICAL PARTS LIST SYMBOL NOa RESISTORS R1 PART DESCRIPTION 1.1kOhms, 1/4w, 1% Metal Film 22.1 k Ohms, 1/4 w, 1% Metal Film 47 Ohms, 1/4x, 5% Carbon Film 47 Ohms, 1/4x, 5% Carbon Film 10k OhmS,1/4w, 1% Metal Film 680 Ohms, 1/4w, 5% Carbon Film 10 Ohms, 2w. 5% Metal Film 680 Ohms, 1/4w, 5% Carbon Film 2.2k Ohms, 1/4w, 5% Carbon Film 5.1 k Ohms,5w, 5% Wire Wound 22k Ohms, 1/4w, 5% Carbon Film 1 .Ok Ohms, 1/4w. 5% Carbon Film 1.1kOhms, 1/4w, 1% Metal Film 22.1 k Ohms, 1/4w, 1% Metal Film 10 Ohms, 1w,5% Metal Film 27 Ohms, 1/4w, 5% Carbon Film 47 Ohms, 1/4w, 5% Carbon Film 470 Ohms, 1/4w, 5% Carbon Film 10 Ohms, 2w, 5% Metal Film 220 Ohms, 1/4w, 5% Metal Film 68 Ohms, 1/4w, 5% Carbon Film 47 Ohms, 1/4w, 5% Carbon Film 10 Ohms, 2w, 5% Metal Film 10 Ohms, 2w, 5% Metal Film 30 Ohms, 1/2w, 5% Carbon Film 2.7 Ohms, 1w, Metal Film 10 Ohms, 2w, 5% Metal Film 10 Ohms, 2w, 5% Metal Film l.lk Ohms,1/4w, 1% Metal Film 22,1 k Ohms, 1/4w, 1% Metal Film 47 Ohms, 1/4w, 5% Carbon Film 47 Ohms, 1/4w, 5% Carboon Film 1Ok Ohms, 1/4w, 1% Metal Film 680 Ohms, 1/4w, 5% Carbon Film 10 Ohms, 2w, 5%, Metal Film 680 Ohms, 1/4w, 5% Carbon Film 2.2k Ohms,1/4w, 5% Carbon Film 5.1 k Ohms, 5w, 5% Wire Wound 22k Ohms,1/4w, 1% Metal Film 1 .Ok Ohms,1/4w, 5% Carbon Film 1.1kOhms, 1/4w, 1% Metal Film 22.1kOhms.1/4w, 1%Metal Film 10 Ohms, 2w, 5% Metal Film 27 Ohms, 1/4w, 5% CarbonFilm 47 Ohms, 1/4w, 5% Carbon Film 470 Ohms, 1/4w, 5% Carbon Film 10 Ohms,2w, 5% Metal Film 220 Ohms, 2w, 5% Metal Film 68 Ohms,1/4w, 5% Carbon Film 47 Ohms, 1/4w, 5% Carbon Film 10 Ohms, 2w, 5% Metal Film 10 Ohms, 2w, 5% Metal Film 30 Ohms,1/2w, 5% Carbon Film 2.7 Ohms, 1w, Metal Film 10 Ohms, 2w, 5% Metal Film 10 Ohms, 2w, 5% Metal Film 4.7kOhms, 1/2w, 5% Carbon Film 100kOhms, 1/4w, 1% Metal Film 12.1 Ohms, 1/4w, 1% Metal Film 10kOhms.1/4w. 1% Metal Film 33k Ohms,1/4w, 5% Carbon Film 1Ok Ohms,1/4w, 5% Carbon Film 33k Ohms,1/4w, 5% Carbon Film 5.11 k Ohms, 1/4w, 1% Metal Film 1 k Ohms, 1/4w, 1% Metal Film 22k Ohms, 1/4w, 5% Carbon Film PART NO. RMPl4-1101 RMPl4-2212 RCl4470 RCl4470 RMP/4-1 W2 RCl4-68 1 RM2-1 W tw4-681 RCl4-222 RWB5-SXZ RCi4-223 RCI4-102 RMPi4-1101 RMP/4-2212 RM2-1W RC/4-270 RCI4470 RCI4471 RM2-1 W RC/4-221 RCi4-680 RCi4470 RM2-1 W RM2-1 W RC/2-300 RMl-027 RM2-1 W RM2-1 W RMPl4-1101 RMP/4-2212 RCl4470 RCl4470 RMPl4-lCKt2 RC/4-681 RM2-1 W RCI4-681 RCI4-222 RW05-502 RCI4-223 RC/4- 102 RMP/4-1101 RMPl4-2212 RM2-1 W RCl4-270 RCI4470 RCI4471 RM2-1 W RC/4-221 RCl4-880 RCI4470 RM2-1 W RM2-1 W RCL?-300 RMl-027 RM2-1 W RM2-1 W RCl2472 RMP&lW3 RMPl4-1212 RMPi4-lW2 RU4-333 RU4-10 RCt4-333 RMP/4-5111 RCI4-1 W2 RCI4-223 SYMBOL NO. C30 c31 C32 C33 C34 c35 C36 Cl01 Cl02 PART DESCRIPTION 0.1 mfd,100v, 20%. Polyester 0.1 mfd, 100v, 20%, Polyester 68W mfd, 10/75% Polar/Electrolytic 68W Mfd,1 W5% Polar/Eiectrolytic 2.2 mfd, WV, 20%., Polypropylene 330 pf, 500~. Mica Cap 330 pf, 500~. Mica Cap 0.01 nfd, WV, 20%, Polyester 0.01 rrfd, 1 WV, 20%, Polyester PART NO. CP-104A CP-104A CER-698D CER-688D CPP-205C CM-331 CM-331 CP-103/20 CP-103A R2 R3 R4 R5 R6 R7 R8 R9 R10 R11 R12 R13 R14 R15 R16 R17 R18 R19 R20 R21 R22 R23 R24 R25 R26 R27 R28 R29 R30 R31 R32 R33 R34 R35 R36 R37 R38 R39 R40 R41 R42 R43 R44 R45 R46 R47 R48 R49 R50 R51 R52 R53 R54 R55 R56 R57 R58 R59 R60 R61 R62 R63 R64 R65 R67 1 TRANSISTORS 01 z Q4 a5 : : 010 Q1 1 012 Q13 a14 Q15 016 a17 018 Q19 Q20 Ml Q22 Q23 Q24 Q25 Q26 Q27 Q28 2N5550 NPN Transistor 2N5550 NPN Transistor 2N5401 PNP Transistor 2N5401 PNP Transistor 2N5550 NPN Transistor 2N5401 PNP Transistor 2N5401 PNP Transistor 2N2222 NPN Transistor 2N5550 NPN Transistor 2N5401 PNP Transistor 2N5550 NPN Transistor 2SK1056 N-Channel MOSFET 2SJ160 P-Channel MOSFET 2N5550 NPN Transistor 2N5550 NPN Transistor 2N5401 PNP Transistor 2N5401 PNP Transistor 2N5550 NPN Transistor 2N5401 PNP Transistor 2N5401 PNP Transistor 2N2222 NPN Transistor 2N5550 NPN Transistor 2N5401 PNP Transistor 2N5550 NPN Transistor 25K1056 N-Channel MOSFET 25J160 P-Channel MOSFET 2N5550 NPN Transistor 2N5550 NPN Transistor SSH-613 SSH-613 SSH-708 SSH-708 SSH-613 SSH-708 SSH-708 SSH-611 SSH-613 SSH-708 SSH-613 SSH-710 SSH-709 SSH-613 SSH-613 SSH-708 SSH-708 SSH-613 SSH-708 SSH-708 SSH-611 SSH-613 SSH-708 SSH-613 SSH-710 SSH-709 SSH-613 SSH-613 DIODES CR1 CR2 CR3 CR4 CR5 CR6 CR7 CR8 CR9 CR10 CR1 1 CR12 CR13 CR14 CR15 CR16 CR17 CR18 CR19 CR20 CR21 CR22 CR23 CR24 CR25 CR26 CR27 CR28 CR29 CR30 CR31 1 N4148 Silicon Diode 1 N4 148 Silicon Diode 1N4148 Silicon Diode 1 N4 148 Silicon Diode 1N4148 Silicon Diode 1 N4148 Silicon Diode 1N4148 Silicon Diode 1 N4148 Silicon D i o d e 1 N4148 SiIiconDiode 1N4148 Silicon Diode 1N5204B 10v,1/2w, 5% Zener 1 N5204B 1 0v, 1/2w, 5% Zener lN4148 Siliin Diode lN4148 Silian Diode lN4148 Siliin Diode lN4148SiliconDiode lN4148 Silium Diode lN4148 Silkon Diode lN4148 S i l i c o n D i i lN4148 Sifiw Diode lN4148SiIiwrlDiode lN4148 Silicon Diode lN4148 Siticon Diode lN4148 Silicon Diode lN4148 Silicon Diode lN5204B lm,1/2w, 5% Zener lN52048 10~. 1/2w, 5% Zener lN4148 Siliam Diode 1N4140SiliaxlDiode lN4148SilfaxlDiode 1 N5245B 15~. lf2w.5% Zoner SS-162 SS-162 SS-162 SS-162 SS-162 SS-162 SS-162 SSl62 SS-162 SS-162 SSH-600 SSH-600 SS-162 SS-162 SS-162 SS-162 SS-162 SS-162 SS-162 SS-162 SS-162 SS-162 SS-162 SS-162 SS-162 SSH-600 SSH-600 SS-162 SS-162 SS-162 SS-212 CAPACITORS C1 c2 c3 C4 c5 C6 c7 C8 c9 C10 C11 C12 C13 C14 C15 C16 C17 C18 C19 C20 c21 C22 C23 C24 C25 C26 C27 C28 C29 2.2 rnfd,m, 20%, Polypfcpybne 220 pfd, 75~. 10%. Polflropylene 3 3 0 p f d , 63Ov, 3%, D i i M i c a 100 tid, Non-Polar Radial 47 pfd, 65Cv. 3%. D@jwd Mica 220 pfd, 75~. 10% Polypwylene 3pfd.5Wv.D@)edMka O-W1 tid, 25Ov, 1% Pofypropytene 100 tid,50~. 209& Pofar/Electrolyric 0.1 IT&l, 1Wv. 2Ix&Pofyester 0.1 r&l,vxht,20%$ PWesler 0.33 rrtd,l%Ov, 10%. Polypqylene 0.1 tnfd*lWv,m PofyesIer 100 rrfd,50~. 20% Pohr/ElecUolytic 0.1 mfd, low,20%$ PoIyeslef 0.1 mfd, lUZv, m Pofyester 220 pfd, 75~. 10%. Polyprcpylene 330 pfd, 63Qv, 3%. Dipped Mica 100 nfd, Non-Polar Radial 47 pfd, 65Cv. 3%. D@ped Mica 220 pfd, 75~. 10%, Polypropylene 3pfd.=O'&DbpedMka O-W1 tid,25&, 10%. Pwene 100 tid,5@u, 209& Polar/Electrolyric 0.1 mfd,lWv,209& Polyester 0.1 mfd, 1Wv. zn&pofyester 0.33 rrfd,16Ov, 10%. Pe 0.1 rw,loOv, 20% Pofyester 1 W tid,50~. 20%. PotarIE~rotytic CPP-m CPP-221 CM-331 CERNP-107 CM470 CPP-221 CMCPP-102 CER-107C CP-104A CP-104A CPP-333 CP-104A CER-107C CP-104A CP-104A CPP-221 CM-331 CERNP-107 CM470 CPP-221 CM-030 CPP-102 CER-107C CP-1wA CP-104A CPP-333 CP-104A CER-107C TRANSFORMERS T101 T102 Domestic Transformer Export Transfomer TT-P125 TT-P125E1A THERMISTORS TS1 TS1 ThermistorMEPCO#2322-640-63103 ThemistorMEPCO#2322-640-63103 SSH-730 ssn-730 FUSES F1 F2 E F101 4A, AGCf3AG 4A. AGU3AG 4A. AGU3AG 4A. AGU3AG 5A Slo-BloAGC Fuse FS-004 FS-004 FS-004 FS-004 FS-005SB MISCELLANEOUS Pl P2 P3 P4 z DBlOl SlOl 1 k Ohms,variable 500 Ohms,variable 1 k Ohms,vari&le a Ohm,varwe 6 Mkrohenry,inductor 6 &rohenry,lnduuof DiodeBrfCbe,25A wayswitch RVH-102 RVH-501 RVH-102 RVH-501 TT-6.0 TT-6.0 SSH-629 SWH-144 9- CABINET ASSEMBLY PARTS LIST REFERENCE NO. A. B. C. PART NO. SM-1103Pl SM-1103Pl TT-P125 TT-P125E HWH-295 DESCRIPTION Cover- SE120 SE120 Domestic transformer screw SE120 Export transformer #10-32x1/2 hex socket head screw PC-58 board kit- SE120 L-bracket - SE120 Painted heatsink- SE1 20 Faceplate- SE120 (6) 1/2 sm hex socket head screw Chassis - SE120 #10-32x1/2 hex socket head screw Standoff post On/off switch SE 120 overlay D. E. F. G. H. I. J. K. L. M. WP-PC58K WP-PC58K SM-8103AB SM-8103AB HS-SEl2OP HS-SE12OP SM-3102P3 SM-3102P3 HWH-134 HWH-134 SM-2103S2 HWH-295 HWH-295 HWH-290 HWH-290 SWH-144 SWH-144 FA-LOGO SE120 FA-LOGO SE120 -lO- OPEN FACE VIEW OF SE120 -ll- PACKING ASSEMBLY PARTS LIST SYMBOL NO. A. B. C. D. PART NO. DESCRIPTION INSTAPACK LIT-I 20M FG-SE120 PM-701 LIT-WAR PACKING FOAM SE1 20 INSTRUCTION MANUAL 120 AMPLIFIER BOX-SE1 20 WARRANTY CARD 0 D