Harman Kardon HK6850 User's Manual
Contents
1.2. harman kardon HK6950R ntegrateaamptities HK6850 HIK6950R Integrated Amplifier Instruction Manual harman kardon Thank you for choosing a Harman Kardon integrated amplifier This is a superb piece of high fidelity equip ment that has been meticulously designed to provide you with thou sands of hours of enjoyment This manual describes the features and capabilities of your new inte grated amplifier In addition it de scribes the proper method for con necting your integrated amplifier to your system Please read this owner s manual and use your integrated amplifier only in accordance with its instructions Keep the manual in a safe place for future reference HK6850 and HK6950R Features Discrete circuitry Rather than employing simple integrated circuits in the amplifier section the HK6850 and HK6950R use completely discrete separate electronic compo nents for greatly improved linearity and less distor tion HCC High instantaneous Current Capability While reproducing dynamic music signals the instantaneous impedances of nearly all loudspeakers drop to less than a third of the nominal rating These low instantaneous impedances typically require three to s
3. unit before damage can occur Depending on the cause and extent of the overheating the unit may take some time to cool down and the protection circuit will remain in operation until the unit is cool enough to operate safely In the case of a short circuit in the speaker wires the protection circuitry will attempt to reset itself every 10 seconds and you may hear a slight click as it does so The protection circuit will remain in operation until the condition is corrected HEADPHONE jack Stereo headphones with a standard 1 4 plug can be connected to this jack You can listen to headphones regardless of whether your speakers are playing To listen to headphones only turn the speaker selector to OFF PHASE CORRECT LOUDNESS At low volume levels your ear is less sensitive to very low bass frequencies than it is at normal listening levels The loudness button provides a special equali zation curve that boosts low frequencies The loudness button is useful for restoring full frequency balance at low volume levels and can also be used to improve the bass response of small bookshelf speakers The indicator light will be lit when PHASE CORRECT LOUDNESS is on Q SUBSONIC filter Warped records and turntable resonance can generate sub audible frequencies that can cause your speaker s woofer cones to visibly flutter This very low frequency noise while inaudible can rob power from your amplifier can cause feedback through
4. zip cord from a hardware store can be used with excellent results if you use the correct gauge thickness The gauge of wire you need depends on the distance the wire must run from your amplifier to your speakers Wire length Gauge of speaker wire Up to 8ft 2 4m 18 gauge Up to 12ft 3 6m 16 gauge Up to 20ft 6 1m 14 gauge Almost any distance Special speaker cable Make sure that the wires for both speakers are the same length even if the distance from each speaker to the amplifier is different Avoid coiling any excess speaker wire near the cables from your compo nents since it may degrade sound quality or cause hum or other noise in the system Speaker connection First examine your speaker wire to determine which lead to use for the positive terminal One of the two leads will be marked in some way such as being copper colored including a strand of yarn with one conductor or having a ridge or a symbol marked on the insulating material Use the marked lead for the positive red terminal both on the speaker and on the back of the amplifier 1 Remove about 3 4 20 mm of insulation from the end of each speaker wire This bare section of wire will make the electrical connection with the terminals 2 Twist each lead so that no loose strands stick 3 Insert about 1 2 12 mm of the wire that you have identified as positive into the red connector on your right channel speaker Insert the other end of this
5. your turntable can cause intermodulation distortion at audible frequencies and can actually damage your woofers if the movement is violent enough The subsonic filter HK6850 and HK6950R Front Panel Controls reduces these inaudible frequencies at 6dB per octave below 15Hz The audible portion of the frequency range will not be affected so it is useful to leave the subsonic filter on at all times when listening to the turntable The indicator light will be lit when the SUBSONIC filter is on TONE DEFEAT switch When TONE DEFEAT is turned on the bass and treble controls have no effect The TONE DEFEAT switch internally bypasses the tone control circuitry resulting in completely unaltered frequency response If you want to use the bass and treble controls turn TONE DEFEAT off The indicator light will be lit when the TONE DEFEAT switch is on BASS control The BASS control boosts or reduces the low frequency sound level The BASS control affects only frequencies below 300Hz and allows changes of up to 10dB The BASS tone control in some circumstances can help you adjust the overall sound of your system For example boomy room acoustics may be improved with a slight decrease in the bass or the sound of smaller loudspeakers lacking in bass may be improved with a bass boost TREBLE control The TREBLE contro boosts or reduces the high frequency sound level The TREBLE control affects only frequencies above 3000
6. Hz and allows changes of up to 10dB The TREBLE tone control in some circumstances can help you adjust the overal sound of your system For example an overly shrill recording or bright room acoustics may be improved by a reduction in the amount of treble BALANCE CONTROL The BALANCE control distributes the sound between the right and left speakers For equal balance in each channel set the control in the center PREAMPLIFIER BYPASS When the PREAMPLIFIER BYPASS switch is on the source signal goes directly to the input of the ampli fier bypassing all tone controls and other preamplifier circuitry and js attenuated only by the volume control CARTRIDGE selector This switch sets up the gain and input impedance of your amplifier s internal circuitry to match the type of cartridge being used on your turntable Be sure you connect your turntable to the appropriate PHONO input jacks on the back of the HK6850 HK6950R MM for moving magnet cartridges or MC for moving coil cartridges Then use this switch to select the type of cartridge mounted on your turntable Note that you can connect both moving coil and moving magnet cartridge inputs and use this switch to select between them The MC setting engages a special MC step up amplifier stage VOLUME control This knob controls the sound level Turn the VOLUME control all the way down before you turn on your amplifier or change sound source This will protect your s
7. R OPERATING MODE switches to 8Q position and replace the plate so that it covers the other side of the switches In all other cases use the 4Q positions If you are in doubt about the impedance of your speakers use the 4 ohm positions since the power amplifier runs cooler in this mode Having these switches set to 8Q if you are using 4 ohm or 6 ohm speakers may result in overheating of the amplifier or failure of an internal fuse If you are using two pairs of speakers it is important to note that the combined total impedance of both sets of speakers must not be less than 4 ohms If the combined impedance is lower you may overload the amplifier resulting in overheating or failure of an internal fuse Two sets of 8 ohm speakers presents a combined total impedance of 4 ohms which is an acceptable load for your amplifier as long as you set the SPEAKER OPERATING MODE switches to 4 ohms If you have questions consult your Harman Kardon dealer before adding a second set of speakers to your system Connecting a turntable Your HK6850 or HK6950R has two sets of PHONO input jacks for connecting turntables One set of jacks is marked MC for Moving Coil If you have a moving coil cartridge that generates at least 1201 V mounted on your turntable be sure you connect the turntable to the MC jacks These jacks are internally wired to a special step up amplifier stage The other set of jacks is marked MM for Moving Magnet If you have a re
8. be used for connecting either a tape deck or a other video source Video equipment connection is described in the following sections Connecting a video product Connect a patch cord from the audio out connec tors on your video product to the video audio connec tors Connecting an external power amplifier If you want to use your HK6850 or HK6950R simply as a preamplifier and connect it to an external power amplifier use the PRE OUT connectors in the upper left corner Connect the patch cord from the PRE OUT jacks on the HK6850 or HK6950R to the jacks on your external power amplifier Then connect your speakers to your external power amplifier Connecting an external preamplifier To use the HK6850 or HK6950R simply as a power amplifier connect the Pre Out jacks of the external preamplifier to the Main in jacks on the back panel of the HK6850 or HK6950R Then set the Integrated Separate switch on the back panel to the Separate position Wired Remote Control To control your amplifier with an external infrared remote sensor connect the wire from the remote sensor to the Remote In jack on the back panel Or if you have a stereo component with a built in infrared remote sensor and a Remote Output jack it may be possible to connect this jack to the Remote In jack of your amplifier All Harman Kardon products with Remote In and Remote Out jacks are compatible with one another except for the C
9. bsonic Filter Phase Correct Loudness Contour at 50Hz Weight Ibs kgs Dimensions Width x Height x Depth Power Supply Power Consumption All specifications and features subject to change without notice 1991 Harman Kardon Inc 2 5mV 47k Ohms 125 pF 2 5mV 47k Ohms 125 pF 1201V 56 Ohms 1204 V 56 Ohms 135mV 22k Ohms 135mV 22k Ohms 880mV 27k Ohms 880mV 27k Ohms 150mV 7mV 150mV 7mV 0 2dB 0 2dB 10dB 10dB 10dB 10dB lt 5 lt 5 15Hz 6dB octave 15Hz 6dB octave 6dB 6dB 37 5lbs 17 0kg 34 21bs 15 5kg 17 318 x 6 5 16 x 15 15 16 17 3 8 x 6 5 16 x 15 15 16 443 x 160 x 405 mm 443 x 160 x 405 mm AC 120V 60Hz AC 120V 60Hz 350W 500VA 280W 10 harman kardon A Harman International Company Printed in Japan 8380 Balboa Boulevard 1111 0310 152 9206 2 Northridge CA 91325
10. can record on both of them simultaneously since the same signal is routed to both You can also record on one deck and listen to the other by using the TAPE MONITOR selector Copying dubbing from one tape deck to another 1 Use the RECORD OUT selector to set the direction of the copying For example if you want to play a tape on the deck connected to TAPE 1 and record that tape on the deck connected to TAPE 2 select COPY 1 gt 2 2 Start the first tape playing and the second tape recording 3 To monitor as you record set the TAPE MONI TOR selector to 1 if the tape deck you re recording on is connected to TAPE 1 Set the selector to 2 if the unit is connected to TAPE 2 Make sure you return the TAPE MONITOR selector to SOURCE when you re finished listening to the tape deck 4 To listen to another program source while you copy from one deck to another return the TAPE MONITOR selector to SOURCE then set the SOURCE selector to whatever source you want to listen to These selections will not affect your record ing Copyright Information Recording of copyrighted material for other than personal use is illegal without permission of the copyright holder Remote Control System HK6950R only Using the remote control The system remote control can switch the amplifier s power status be tween on and standby The amplifier s power switch must be manually set in the on position in order for the rem
11. f of purchase and you may need it to establish the date on which your warranty begins You will be required to show it for service during the duration of Limited Warranty f CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN CAUTION TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE COVER OR BACK NO USER SERVICEABLE PARTS INSIDE REFER SERVICING TO QUALIFIED SERVICE PERSONNEL The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated dangerous voltage within the product s enclosure that may be of suffi cient magnitude to constitute a risk of electric shock to persons The exclamation point within an equilateral triangle is intended to alert the user to the presence of impor tant operating and maintenance servicing instruc tions in the literature accompanying the appliance WARNING TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THIS APPLI ANCE TO RAIN OR MOISTURE CAUTION To PREVENT ELECTRIC SHOCK MATCH WIDE BLADE OF PLUG TO WIDE SLOT FULLY INSERT ATTENTION pour EVITER LES CHOCS ELECTRIQUES INTRODUIRE LA LAME LA PLUS LARGE DE LA FICHE DANS LA BORNE CORRESPONDANTE DE LA PRISE ET POUSSER JUSQU AU FOND HK6850 and HK6950R Front Panel Controls Remote Sensor O Headphones harman kardon HK6950R integrated ampiitier Speakers Rocord Out Source 1 on O Power Switch Pre
12. gular moving magnet car tridge mounted on your turntable connect the turn table only to the MM inputs as the sizeable volume boost of the MC jacks will cause volume problems and severe distortion Make sure you connect the thin ground wire from your tuntable to the GND post located next to the phono input jacks Failure to connect this ground wire can result in a distracting hum when you play your turntable When only one turntable is used be sure to insert the attached shorting pin plug into the PHONO MM or MC jacks that are not being used Connecting a CD player Attach the patch cord from the CD input jacks to your compact disc player Connecting a tuner Attach the patch cord from the TUNER input jacks to your tuner Be sure you connect an antenna to your tuner otherwise the quality of your AM and FM signal may be poor Connecting a tape deck You can have several tape decks connected to your HK6850 or HK6950R The best choice is to connect your tape deck s to the jacks labeled TAPE 1 or TAPE 2 The IN and OUT connectors on your tape deck correspond to the opposite connectors on the back of your amplifier That is you connect OUT on the tape deck to IN on the amplifier A third tape deck can be connected to the AUX connectors if the deck will be used only for playback Connect a patch cord from the audio OUT connectors on the tape deck to the AUX connectors on your HK6850 or HK6950R Note that the TAPE input jacks can
13. heck to make sure that the PHONO and GND connections on the back of the amplifier are secure Depending on the cartridge type used less hum may be produced without the ground connection Listening to a CD tuner AUX or Video compo nent 1 Set the SOURCE selector to the appropriate input CD TUNER AUX or VIDEO 2 Set the TAPE MONITOR selector to SOURCE 3 Turn on the component Playing a tape 1 Set the TAPE MONITOR selector to 1 if the tape deck you want to play is connected to TAPE 1 Set the selector to 2 if the unit is connected to TAPE 2 2 Turn on the tape deck Make sure you return the TAPE MONITOR selector to SOURCE when you re finished playing the tape deck Recording on a tape deck 1 If you want to record from the tuner set the RECORD OUT selector to TUNER If you want to record from PHONO CD AUX or VIDEO set the RECORD OUT selector to SOURCE then set the SOURCE selector to PHONO CD AUX or VIDEO 2 Start the tape deck recording 3 To monitor as you record set the TAPE MONI TOR selector to 1 if the tape deck you are recording on is connected to TAPE 1 Set the selector to 2 if the unit is connected to TAPE 2 4 If you are recording from your tuner you can listen to another program source without affecting your recording Simply set the SOURCE selector to whatever source you want to listen to This selection will not affect your recording from the tuner If you have two decks connected you
14. itation 22 24 and 25 Other manufacturers remote sensors may not be compatible but it will not hurt to experiment A second wire may be used to connect your amplifier s Remote Out jack to the Remote Input of another stereo component Continue this process to include additional components if compatible To control your amplifier you may use the remote control supplied with the HK6950R Or you may use a universal remote control unit such as Harman Kardon s Masterworks which can also control other components such as TVs VCRs tape decks and CD players Masterworks is available from your Harman Kardon dealer Operation Turn on the power to all components that aren t connected to the SWITCHED outlets on the back of your amplifier Make sure the volume control on your HK6850 or HK6950R is turned all the way down then turn the unit on This procedure will protect your speakers from turn on thumps transients from the other components Listening to a record 1 Set the SOURCE selector to PHONO 2 Set the CARTRIDGE selector to MM if the turntable you want to use has a moving magnet cartridge or to MC if it has a moving coil cartridge 3 Set the TAPE MONITOR selector to SOURCE 4 Turn on the turntable and play the record 5 If you notice that the record is warped turn on the SUBSONIC filter to reduce turntable resonance If you hear hum at average listening levels turn all components off then c
15. ix times more current from the amplifier than a nominal 8 ohm resistive load requires The HK6850 and HK6950R integrated amplifiers can provide respectively 70 and 90 amperes of instantaneous current which ensures that your speakers will be able to continually reproduce the entire dynamic range Ultrawide bandwidth Unlike ordinary integrated amplifiers the HK6850 and HK6950R can reproduce musical fre quencies ranging from less than 10Hz to more than 100kHz This ultrawide bandwidth improves the accuracy of reproduction of transient signals and ensures phase linearity Low negative feedback This design philosophy is used by the world s most exclusive amplifiers It requires the highest quality internal components and results in an extremely stable amplifier with unmeasureable TIM distortion and absolutely outstanding imaging characteristics Main direct The PREAMPLIFIER BYPASS switch routes the source signal directly to the input of the amplifier bypassing all tone controls and other preamplifier circuitry The signal is therefore attenuated only by the high quality volume control resulting in very pure sound quality Tone defeat The TONE DEFEAT switch causes the source signal to completely bypass the tone control circuitry This results in unaltered completely accurate musical reproduction Electronic function switching The controls on the front panel of the HK6850 and HK6950R switch input and output connections electr
16. od of time Cleaning Use only a clean dry cloth to clean your amplifier Do not use solvents such as alcohol benzine gasoline etc Take care that excessive dust does not accumulate on your unit and that objects are not dropped inside or liquids spilled into the unit Water and moisture Do not operate this amplifier around water e g near a swimming pool sink or in a wet basement Abnormal smells If you detect an abnormal smell or smoke imme diately turn the amplifier off and unplug the power cord Contact your dealer or nearest Harman Kardon service center Service Your amplifier should be serviced by authorized Harman Kardon service personnel when The plug or power cord has been damaged e Objects have fallen into the unit e Liquid has been spilled into the unit e The unit has been exposed to rain The unit does not operate normally The unit has been dropped or the cabinet has been damaged Please do not attempt to service your amplifier beyond the troubleshooting suggestions in this manual All other service should be referred to authorized Harman Kardon service personnel Packing material Your box and packing material are custom designed to provide optimum protection for your amplifier Be sure to save the box and packing material in case you need to transport or ship the unit at some time Warranty card Fill out the warranty card and save your sales receipt Your sales receipt is your proo
17. of the problem contact your dealer or authorized Harman Kardon service representative No lights on the front panel 1 Power cord is not plugged into power outlet 2 Wall outlet or extension cord is faulty Check for poor connections and or blown fuse 3 Breaker on plug strip has tripped Reset breaker The PROTECT light goes on and stays on 1 The unit is overheated Make sure that the unit is receiving adequate ventilation Also check to make sure that the SPEAKER OPERATING MODE switch is set to 4Q if you are using 4 ohm speakers using the 8Q setting with 4 ohm speakers can cause overheat ing Be sure you give the unit adequate time to cool off the PROTECT light will remain on until the unit is cool enough to operate safely which may take 60 to 90 minutes Your amplifier will cool off more quickly if you turn off its power switch 2 Speaker wires are touching one another causing a short circuit that activates protection circuits that shut down the amplifier Check the speaker wires 3 If you have ensured that the unit is not over heated and even with the speaker wires completely disconnected the PROTECT light still remains on take the unit to an authorized Harman Kardon service center for service No sound 1 Speakers are connected to wrong set of speaker terminals 2 SPEAKER selector is not switched to correct set of speakers 3 Speaker wires are touching one another causing a short circuit that activate
18. onically through the use of high fidelity elec tronic analog switches Harman Kardon s simple and elegant electronic design makes possible complex component configurations In addition this all electronic circuitry ensures that the switches will function quietly and reliably for the life of the unit High voltage high current design Harman Kardon has designed the HK6850 and HK6950R to be able to handle low impedances and unstable speaker loads that would destroy less rugged amplifiers While the HK6850 and HK6950R can easily manage these loads the unit can be set to provide higher voltage and even more power into higher impedance loudspeakers allowing you to use the unit to full capacity Phase correct loudness contour Harman Kardon s exclusive Phase correct loud ness circuitry provides a special fixed equalization curve that compensates for the ear s decreased sensitivity at low volumes This special circuitry is unusual in that it corrects for midrange phase errors inherent in low frequency loudness equalization The result of this correction is that low frequencies sound clear and natural with no coloration or degradation of stereo imaging Active passive phono section with MM and MC inputs A switch on the front panel of the HK6850 and HK6950R sets up the gain and input impedance of your amplifier s internal circuitry to match the type of cartridge being used on your turntable The HK6850 and HK6950R provide you with b
19. ote control to function The volume up and down buttons control the position of the amplifier s volume control knob In addition to this amplifier this system remote control can operate many basic functions on the following Harman Kardon tuners CD players and cassette decks HD7450 HD7600Il TD4200 TD4800 TU9200 HD7500 TL8500 TD4400 DC5300 TU9400 HD7500I1 TL8600 TD4500 DC5500 TU9600 HD7600 TD4600 DC5700 Please refer to the owner s manual for each unit for operating instructions These units must be connected to the amplifier s remote control units output jacks so that the system remote control can operate them Operating Conditions The control unit operates effectively within a distance of 23 feet 7 meters and an angle of 30 from the amplifier Using the control near fluorescent lights may shorten this range as will any dust or dirt that accumulates on the front of the remote control or the Remote Sensor area of the amplifier Also avoid blocking the line of sight between amplifier and remote The control unit is powered by two AA batteries included with your amplifier When you replace weak batteries replace both at the same time When the remote is to be unused for an extended period remove the batteries to prevent damage from corrosion Troubleshooting If your HK6850 or HK6950R does not operate as expected first check the items in the following list If you cannot determine the source
20. oth a passive unam plified phono section for use with standard moving magnet phono cartridges and an active amplified phono section for use with moving coil low output phono cartridges You can connect both moving coil and moving magnet cartridge inputs and use the switch on the front panel to select between them HK6850 and HK6950R Basics Placement The HK6850 and HK6950R are fully shielded and may be placed on top of or under other stereo compo nents as long as the feet provide sufficient clearance for cooling for the component below Please make sure that the HK6850 or HK6950R receives adequate ventilation It should always be located away from heat sources such as radiators fireplaces stoves and other appliances that produce heat Avoid placing the unit in locations that receive prolonged direct sunlight or extremely low temperatures Power source The HK6850 or HK6950R should be connected only to a 120 volt 60 cycle power supply Power cord protection The power cord should be routed in such a way that it is not likely to be walked on or pinched by items laying on or against it Any power cord is susceptible to stress at the point where it joins the plug and the point where it exits from the back of the unit so take care not to fold or bend it excessively at those points Never pull or stretch the cord The amplifier s power cord should be unplugged from the outlet when the unit is left unused for a long peri
21. peaker wires and ensure that the terminal on the amplifier is connected to the terminal on the speaker Sound quality of tuner is poor 1 Tuner s antenna is not connected or is not positioned properly Tone control is not functioning 1 The TONE DEFEAT switch is on bypassing the tone controls 2 The PREAMPLIFIER BYPASS switch is on bypassing the tone controls Specifications HK6950R HK6850 Continuous Average Power FTC per Channel 20Hz 20kHz Both Channels Driven 8 ohms 170 Watts lt 0 08 THD 120 Watts lt 0 08 THD 4 ohms 170 Watts lt 0 08 THD 120 Watts lt 0 08 THD HCC High instantaneous Current Capability 90 Amps 70 Amps Negative Feedback overall 12dB 12dB Power Bandwidth at half rated output 8 ohms lt 10Hz 100kHz lt 10Hz 100kHz Frequency Response at 1 Watt output 0 3dB 0 2Hz 180kHz 0 2Hz 180kHz Slew Rate 280 Volts usec 280 Volts usec Square Wave Rise Time 1 8usec 1 8usec Transient Intermodulation Distortion TIM Unmeasurable Unmeasurable Damping Factor 70 70 Signal to Noise Ratio ref rated power output A Wtd Phono MM 83dB 83dB Phono MC 76dB 76dB Video CD 95dB 95dB Main In 108dB 108dB Input Sensitivity Impedance Phono MM Phono MC Video CD Main In Phono Overload MM MC RIAA Equalization 20Hz 20kHz Tone Control Range Bass 50Hz Treble 10kHz Phase Shift 400Hz 20kHz Su
22. peakers from being damaged by sudden high volume sound SOURCE selector The SOURCE selector controls which program source you are listening to PHONO Selects a turntable connected to either the MM or MC phono jacks e TUNER Selects an AM or FM broadcast from a tuner connected to the tuner jacks e CD Selects a compact disc player connected to the CD jacks VIDEO Selects sound from an audio video compo nent such as a camcorder TV tuner connected to the VIDEO jacks e AUX Selects sound from any component connected to the AUX jacks RECORD OUT selector This selector controls which program source you can record on the tape deck s connected to your unit Whatever source you select is sent to all tape decks connected to your HK6850 or HK6950R so you can record on both decks simultaneously TUNER In this position the tuner signal is the source you are recording regardless of the position of the SOURCE selector This permits you to record the tuner signal while listening to a completely different source selected on the SOURCE selector described above e SOURCE In this setting whatever source you have selected on the SOURCE selector will be the source you are recording OFF Leave the selector in this position when you are not recording This will ensure the purest sound quality when you listen directly to a source selected with the SOURCE selector COPY 1 gt 2 In this position you are
23. positive lead into the RIGHT red Speaker 1 terminal on the back of your amplifier Tighten the terminal knob and the wire will be held securely 4 Insert the other lead of the same wire into the black connector on the same speaker Insert the other end of this lead into the GND black Speaker 1 terminal on the back of the amplifier The GND terminal is located directly below the RIGHT terminal 5 Repeat the above procedure for the left speaker 6 Recheck the polarity of both sets of speaker wires making sure that you have connected red to red and black to black If you accidentally connect red to black your speakers will be out of phase While this will not harm your system your speakers will be incapable of producing normal bass response until the connection is corrected Setting the SPEAKER OPERATING MODE switches These switches located in the top right corner of the back panel optimizes the amplifier for the best possible operation with your speakers It is extremely important that you set these switches before playing your speakers First determine the impedance of your speakers The impedance may be noted on the back of the speaker or in the owner s manual If not call the dealer or manufacturer to find out the impedance HK6850 and HK6950R Connections If you are using a single set of 8 ohm speakers remove the screw and the plate covering one side of the switches Set both of the SPEAKE
24. recording from the deck connected to the TAPE 1 jacks to the deck connected to the TAPE 2 jacks e COPY 2 gt 1 In this position you are recording to the deck connected to the TAPE 1 jacks from the deck conn cted to the TAPE 2 jacks For example if you want to make a tape recording of a CD set the RECORD OUT selector to SOURCE and set the SOURCE selector to CD D TAPE MONITOR selector The TAPE MONITOR selector enables you to listen to your tape deck Note that this selector does not select the source for recording It selects only the deck you are listening to An important use for this selector is for monitoring during recording To monitor during recording select the deck that is recording For listening to one tape deck while the other deck is recording a different source select the deck that is not recording TAPE In this position you are listening to the deck connected to the TAPE 1 jacks SOURCE The SOURCE position turns off the output from your deck and returns you to the source you have selected on the SOURCE selector TAPE2 In this position you are listening to the deck connected to the TAPE 2 jacks D SPEAKER selector You can connect either one or two sets of speakers to your HK6850 or HK6950R This selector enables you to play a single set of speakers by themselves both sets of speakers at the same time or to turn both sets of speakers off for headphone only listening e OFF Select this posi
25. red plug as right and the white gray or black plug as left Do not wind the component cables with the power cord doing so may degrade the sound quality Power outlets To the right of the back panel on North American version are located three AC power outlets The two outlets labeled SWITCHED are controlled by the power switch on the front of the amplifier When the power is switched off at the front panel button power is also turned off to the SWITCHED outlets You can plug the power cord of a tuner tape deck turntable or other low power component into these outlets When you turn off your amplifier units plugged into the SWITCHED outlets will be turned off simultaneously The SWITCHED outlets have a combined power rating of 200 watts Make sure that the units that you plug into these outlets do not draw more than 200 watts total Check the owner s manuals to determine how much power each unit draws The UNSWITCHED outlet is not controlled by the power switch This outlet receives power as long as the HK6850 or HK6950R is plugged into an AC outlet A unit plugged into the UNSWITCHED outlet can remain turned on even if your amplifier is turned off This outlet has a power rating of 200 watts Make sure that the unit you plug into this outlet does not draw more than 200 watts Connecting speakers Speaker wires For the best sound quality you may choose to use the highest quality speaker cables you can afford However common
26. s protection circuits that shut down the amplifier 4 SOURCE selector has not been switched to the source currently playing 5 TAPE MONITOR selector is switched to 1 or 2 while the source currently playing is CD PHONO TUNER AUX or VIDEO Switch TAPE MONITOR selector to SOURCE No sound from tape deck 1 TAPE MONITOR selector has not been switched to the correct unit 2 Tape deck is plugged into the wrong set of input jacks 3 Output of tape deck is plugged into OUT on back of amplifier Plug OUT on tape deck into IN on amplifier Turntable sound is extremely faint 1 Turntable has been connected to wrong set of input jacks If turntable has a moving magnet car tridge connect cables to the PHONO MM jacks if turntable has a moving coil cartridge connect cables to PHONO MC jacks Low pitched hum or buzz from turntable 1 Ground wire from turntable has not been connected securely to ground terminal on amplifier 2 Cable from turntable is too close to power cords or speaker wires 3 Tiny wires connecting cartridge to turntable arm are not firmly connected Low frequency oscillation or howling when playing turntable 1 Too much bass boost is being applied Turn off LOUDNESS and or reduce amount of BASS tone control boost Turn on the SUBSONIC filter 2 Turntable is too close to speakers 3 Turntable is placed on unstable surface Speakers lack bass 1 Polarity of one speaker has been reversed Check s
27. ss this switch to turn the unit On Press it again to turn it Off HK6950R only While it is in the On position the remote control can switch the unit between the On and Standby modes The remote control is inactive when this switch is Off Note that this unit will draw a small amount of power when the unit is in the Off mode Power Indicator HK6850 This indicator is illuminated in green when the power switch is On and is not illuminated when the power switch is Off HK6950R This indicator is illuminated in green when the power switch is pressed On and is not illuminated when the power switch is Off While the power switch is depressed this indicator is illumi nated in amber when the unit is switched off by remote control indicating the Standby mode PROTECT light This light indicates that the protection circuitry of your amplifier is engaged The light will come on 3 under two circumstances e When you turn the unit on As the unit prepares itself for operation a muting circuit temporarily prevents pops or other noise from reaching your speakers When the unit is ready for operation in approximately 10 seconds the light will go off When the unit detects a problem This light will come on if your speakers wires are touching causing a short circuit or if your amplifier overheats In the case of overheating a thermal sensor will shut down the
28. tion to turn off both sets of speakers e 1 Select this position to play the speakers con nected to the SPEAKER SYSTEM 1 terminals e 2 Select this position to play the speakers con nected to the SPEAKER SYSTEM 2 terminals 142 Select this position to play both sets of speak ers at the same time HK6850 and HK6950R Connections Cassette Tape Deck Compact Disc Player OUTPUT aC A ES riGuT Laser Video Player AUD 0 OUT Speaker System 1 Right channel Left channel Hell H M RGHT lo M90 000 T T Right channel Left channel Speaker System 2 Re re Cassette Tape Deck Turntable MC Turntable MM Preamplifier HK6850 and HK6950R Connections Before you begin to connect this unit to your system be sure that all components are turned off and unplugged from the electrical outlet As you connect each component carefully connect the plugs to the input jacks being sure to push the plugs in all the way Loose connection of a plug can cause hum or other intermittent noise Take care to match left and right component plugs with the left and right input jacks on the back of the amplifier Common practice is to use the
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