Shure AVC20 User's Manual
Contents
1. OUT Left Channel i t AUDIO Right Channel AUDIO A 6 60 po 980 Right Channel A Y A V INPUT 3 INPUT 2 INPUT 3 ou TAPE x eRe 22 Operation of the AVC20 When playing back on the Stereo video deck the AjyC20 s STEREO INPUT SELECTOR Switch should be in the BYPASS position the G5 indicator lights Any of the Surround switches may be chosen instead depending on personal m For playback the monophonic video deck 4 Place Stereo video deck s input selector swittch to LINE 2 Set the Stereo video deck s VIDEO TV selector switch to VIDEO 3 Press the AVC20 s MONO INPUT switch the G5 indicator will remain off 4 Set the AVC20 s AUDIO VIDEO SELECTOR Switch to A V INPUT 2 5 Start playback on the monophonic vidfeg deck The Stereo video deck can be used for recording while the monophonic video deck is being played back The Monophonic video deck can be used for recording while the Stereo video deck is being played back Press A V INPUT 1 m For instructions on playback and recording on the video decks refer to their instruction manuals Set to LINE AP SC D VIDEO TV VIDEO TV Selector Switch VIDEO TV Set to je E is Video Deck 2 For Playback Only Mon2. Remove short pins Connect the AVC20 PRE OUT terminals to the input terminals of the other amplifiers using cables with phono plugs at the AVC20 side and appropriate connectors at the amplifier side 18 Center Speaker 3 MONO OUT 4 Many audio video systems are set up with a television centered between two speakers Sometimes however if the speakers are located far away from the tele vision the resultant center localization can become confusing To provide better center localization connect one of the AVC20 s mono outputs to an external amplifier and speaker placing the speaker under or as close as possible to the television Use a shielded magnet type speaker as the center speaker and keep as close as possible to the monitor screen for best results When using a monophonic main amplifier as the cen ter channel use the AVC20 s MONO output terminal for best results Use of Input Output Terminals 1 It is possible to add a different audio source to video software is also possible to dub onto a video deck using a different audio source Connect as shown in the diagram Connect a playback video component for example a video disc player to the A V INPUT 3 Input termi nals and depress the A V INPUT 3 button on the front panel Connect an audio component such as a compact disc player or cassette deck to the TAPE input termi nals When the selector button of the front pane
3. Video Deck HiFi Video Disc Player etc unt 4 9 60 7 A 7 s To Video Input Terminal From Video Output Terminal ch q p Audio Input Terminal Left Channel Right Channel To Audio Terminal To Video Input Terminal cb From Monitor Out Terminal Oo AC OUTLET S W y ES 120 60H21 SPEAKER SYSTEMS 19909080 xus MO bts T BEAN be HE ids pm GE Cy 629 Cm REAR 26 28 EXAMPLES OF USE WITH VARIETY OF DIFFERENT EQUIPMENT Overall Connections Connect equipment for playback and recording such as a video deck as below for best results Connect equipemint for playback only such as a TV video disc player here for best results Video Deck EX Video Disc Player EX HiFi Video Deck Output EX Monophonic Output Input Color Monitor or with Video Input Terminal Input input 656055555 OUTLETS 120V 8 100W IMAX 100W SWITCHED UNSWITCHED out d AUDIO 0050 39 9000 Color Monitor LL d ___ 66 0226 00000 09
4. 10 USE OF WIRELESS REMOTE CONTROL A variety of operations are possible from a comfortable distance when using the wireless remote control unit Remote Control Sensor eWhen using the wireless remote control always point it toward the remote control sensor the 20 This wireless remote control unit uses infrared rays Exposure of the sensor on the AVC20 to strong fluorescent light or the like could result in malfunction Locate the AVC20 to minimize exposure to surrounding light eThe wireless remote contro unit should be used within vertical or horizontal angles of Approx approximately 30 with respect to the sensor 60 on the AVC20 at a distance up to 7m 20ft ee 3 9 E3 53 C3 GJ 87x 1 Approx 7 meters BYPASS Concert Surround CONCERT Synthetic Stereo Spatial Surround Dolby Surround DOLBY FULL MUTE Volume Balance Adjustment RESET Volume Adjustment VOLUME STORE f t Memory Inpu PRESET VOLUME 3 PRESET VOLUME 1 POWER STATION REMOTE CONTROL INSERTING BATTERIES Remove the cover the rear Insert two size batteries pay close Replace the cover attention to the correct polarity and ES CAUTIONS ON BATTERIES one dry cell and one alkaline battery as t
5. move the equipment away from the receiver plug the equipment into a different outlet so that equipment and receiver are on dif ferent branch circuits If necessary the user should consult the dealer or an experienced radio television technician for additional suggestions The user may find the following booklet prepared by the Federal Commuincations Commission helpful How to Identify and Resolve Radio TV inter ference Problems This booklet is available from the US Govern ment Printing Office Washington D C 7 a Stock No 004 000 00345 4 Caution To prevent electric shock do not use this polarized plug with an extension cord receptacle or other outlet unless the blades can be fully inserted to prevent blade exposure Attention Pour pr venir les chocs lectriques ne pas utiliser cette fiche polaris e avec un prolon gateur une prise de courant ou une autre sortie de courant sauf si les lames peuvent tre ins r es fond sans en laisser aucune partie d couvert 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 WARNING TO PREVENT FIRE OR SHOCK HAZARD DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE The lightning flash with arrowhead symbol within an equilatera triangle is intended to alert the user to the presence
6. taining the DOLBY SURROUND mark Oras seme or movies in which the DOLBY STEREO mark appears at the end W The Surround system is manufactured under licence from Dolby Laboratories Licencing Corporation Refer to page 3 for more detailed information 3 Surround Indicator Switch SURROUND INDICATOR Use this switch to turn the SURROUND INDICATOR on or off Press once to turn the SURROUND INDICA TOR off if it is distracting 3 NOISE Filter Switch NOISE FILTER This filter reduces the hissing noise roduced when viewing old movies for example MONO INPUT Depress when using a monophonic video deck The STEREO indicator GD will turn off 48 FULL MUTE Depress to cut off sound momentarily When depressed the indicator will light Press again to return to the original volume Volume Reset Switch VOLUME RESET Use this to make the volume from each speaker equal As the volume will be low when this is done use the volume switches 4 to readjust the balance 47 Image Enhancer Switch IMAGE ENHANCER Use this switch to make the contours of the picture clearer 3 dB 6 dB OFF As the image enhancer makes all details of the picture clearer small white spots on the screen may also stand out thus making the picture actually harder to see If this is the case turn the function OFF 0 00 49 Synthetic Stereo Contr
7. Example 2 AV C20 Rear Panel Front Panel Graphic Equalizer Rear Panel 19 EXAMPLES OF USE WITH VARIETY OF DIFFERENT EQUIPMENT Monophonic Video Deck As shown in the diagrams below video signals are supplied to the television through the antenna line and audio signals pass through the AVC20 to produce sound from the speakers Turn down the TV Volume whenever the AVC20 amps are used Antenna Antenna Line Video Signals Audio Signals Antenna 90 Regular Video Deck To Audio Input Terminal To AC Outlet m Set the AVC20 AUDIO VIDEO SELECTOR to A V INPUT 1 Set front panel switch to SYNTHETIC STEREO Choose the one that sounds best to you m Operate the video deck For operation of the video deck refer to its instruction manual _ AUDIO AUDIO B 20 EXAMPLES OF USE WITH A VARIETY OF DIFFERENT EQUIPMENT Stereo Video Deck USE OF INPUT SELECTOR SWITCHES SOURCE SELECTOR SWITCH DISPLAY Mono MONO Off Mono SYNTHETIC STEREO Stereo BYPASS Stereo CONCERT SURROUND 60 Stereo SPATIAL SURROUND Stereo DOLBY SURROUND a Television VHF Antenna UHF Antenna Coaxial Cable esc E 5 5 474 Set the AVC20 AUDIO VIDEO SELEC os TOR to A V INPUT 1
8. SHURE Owner s Manual VIDEO HI FI SYSTEM EXPANDER SHURE voeon omm conos piden AVC20 222 HARTREY AVENUE EVANSTON ILLINOIS 60202 3696 U S A TELEPHONE 312 866 2200 CABLE SHUREMICRO SPECIAL FEATURES The AVC20 offers the choice of three different types of surround sound effects Dolby Surround Spatial Surround or Concert Surround The 20 is equipped with Four Power amplifiers The 20 allows central control of most video ment 4 types of easy to operate volume balance controls The AVC20 is equipped with a sound memory circuit The Surround Indicator can be switched on or off The AVC20 can be used as a high output stereo amp lifier when in the Balanced Transformerless BTL mode TABLE OF CONTENTS Special features sp ux oru use dux ere p AERE VR ae Surround sound effects 0 Installing the glass door celle Locating speakers 2 ss s voe ee ee eae ewes AUR IS m C De CR LR Connection of speakers erp oec eee e Function names and operations Front panel Function names and operations Rear panel Volume Balance control bea Use of wireless remote control eee te ees Use of the image enhancer switch TP Applications Sm et ee ra e i ene erste neos idle dur Example of use with a
9. 1082 40kHz 0 2dB Main Amplifier Tone Control BASS 10dB TREBLE 10dB SN Ratio IHF short circuit network Audio Video Input 5 90dB Main Amplifier Input 100dB input Output Section Input Terminal Sensitivity Input Impedance A V INPUT 1 2 Video 1Vpp 75 Ohm Audio 150mV 47k Ohm PHONO Lol x t RR E 8mV 47k Ohm 150mV 47k Ohm Main Amplifier Input 1V 20k Ohm Output Terminals Output Level Output Impedance Audio Video 1 2 Video 1Vpp 75 Ohm Audio Video 1 21 Audio 150mV 2 2k Ohm Monitor Output 1 2 1Vpp 75 Ohm Pre Amplifier Output 1V 1k Ohm Monophonic 1 500 The above specifications are subject to change without notice Others Power Source Voltage s n nnn 120 Vac 60Hz Power Consumption see nth rur t ng 300W Supplementary Power Source Outlets Switched 1 100W Unswitched 2 100W x 2 Outer Dimensions WxHxD 430 x 110 x 340 mm 16 15 16 x 4 5 16 x 13 3 8 in Weight eb PESOS MESS 9 5 kg 20 Ib 14 oz Accessories Owner s Manual ove ee ke we dam ER dee Yo EC Pie kis 1 Wireless Remote Control Unit 1 AA Batteries SUM 3 2 Pin Plug Cord for
10. ol E Set the selector switch for the format _ that best suits the material according to oo fp M your personal preference 1 Operate video deck HiFi Video Deck 8 For operation of the video deck refer to its instruction manual For antenna connection refer to the video deck instruction manual In this example the video signals do not pass through the AVC20 so the image enhancer function is inoperable 1597 induj Stereo Pin Jack Cord d EXAMPLES OF USE WITH A VARIETY OF DIFFERENT EQUIPMENT Two Video Decks First decide which deck is to be used primarily In the example below a stereo video deck is used as the primary deck while a monophonic video deck is used as the secondary deck The monophonic video deck s video signals pass through the AVC20 into the LINE input terminal of the stereo video deck whose VHF output terminal is connected to the television Antenna i Steereo Antenna Line Vidieo Deck LINE wb Med input terminal 5 pum Video Signals Monophonic Video Deck Audio Signals LL UHF Antenna Televisision VHF Antenna Video Deck 1 Stereo q To Audio Input Terminal From Audio Output Terminal E 2a 8 From Video Output Terminal To Video Input Terminal ae 2a 2 20000 20
11. of uninsulated dangerous voltage within the product s enclosure that may be of sufficient 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 important operating and maintenance servicing instructions in the literature accompanying the appliance SURROUND SOUND EFFECTS Surround sound The AVC20 is equipped with three types of surround processors which provide a sense of presence and expan sion Every day we are exposed to sounds coming from our surroundings Some sounds reach our ears directly from the source some indirectly reflected off of walls or the ceiling Sounds of voices reach us from behind sounds of cars reach us from the side Sounds coming from all around us are called surround sounds n order to recreate with as much precision as possible that special sound heard in movie theaters speakers are placed both in front of and behind the listeners The reason that sound from the television in our homes is so different from the sound in movie theaters is because sound from a television only comes from in front of the viewer With a surround system the spatial infor mation encoded in a film s sound track will be repro duced in the home listening area The sound from a TV equipped with a single speaker or two speakers with stereo televisions sounds very dif ferent fro
12. variety of different equipment Monophonic video deck llle le STEREO Two video decks E o pis desde ba uds VALERE Video deck and video disc TV equipped with video input terminal Overall connections 2 2 Cautions on usage uou IA eR Be Sa te ee e RC UE ple UR e arm RR e Troubleshooting Specifications 2 wee ew eee rr n n n NOTICE This equipment generates and uses radio fre quency energy and if not installed and 3 properly that is in strict accordance wi manufacturer s instructions may cause ence to radio and television reception It has been type tested and found to comply w e limits for Class B computing device in ar dance with the specifications in Subpart J of Part 15 of FCC Rules which are designed to provide reasonable protection against such interference in a residential installation How ever there is no guarantee that interference will not occur ina particular installation If this equipment does cause interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures reorient the receiving antenna relocate the equipment with respect to the receiver
13. 0 has a built in 4 way 30W amplifier system but by switching to BTL operation it can be used as a 2 way 60W amplifier system BTL Balanced Transformerless Switching CS So CAUTION TURN OFF AVC20 POWER BEFORE OPERATING BTL SWITCH Right Channel Rear Speakers Remove short pins Left Channel Adding Amplifiers in the BTL Mode Adding amplifiers while in the BTL mode makes possible the creation of a sound system with total output greater than 120 watts Only use this switch when the power is off Set the NORMAL BTL switch to the BTL side Connect the speakers as shown in the diagram Sound is produced from the outside speaker terminals when using the AVC20 in the BTL mode The rear speaker terminals become BTL speaker terminals Connection A D To use the AVC20 on the two front channels and use the two rear channels with other amplifiers remove the U shaped short pins as shown in the diagram In order not to lose the pins use cellophane adhesive tape or the like to fix them to the rear panel Connect the REAR PRE OUT terminals to the AUX IN terminals of the added stereo amplifier using pin plug cables When this is done the AVC20 volume control can be operated but the volume of the other amplifier must be increased to match that of the AVC20 SPEAKER SYSTEMS Right Channel Left Channel Front Speakers Other Amplifier 15 Connection B D To use th
14. 00000Q9 A Y INPUT 1 INPUT 2 INPUT 3 To AC outlet AC120V 60Hz o For speaker connection refer to page 5 For use with BTL operation refer to page 15 Compact Disc Player Center Center Channel Speaker Amplifier Refer to page 18 owered Subwoofer Piug the self powered Subwoofer into the AVC20 SWITCHED AC OUTLET 29 CAUTIONS ON USAGE For Safety Power Source Connect to a household power ac outlet Power Cord Do not bend or twist the power cord or place heavy objects on top of it A damaged cord may result in fire or electric shock Do Not Open Do not remove the cabinet as this is both dangerous and could damage the AVC20 Leave inspection and service to authorized service personnel ES sb ze When Not At Home When not using the AVC20 for an extended period of time such as when traveling be sure to unplug the AVC20 from the power supply Problems Should any irregular noise smell or smoke be discovered turn off the power switch unplug and contact your dealer or qualified service personnel Normal Care a Cleaning the Cabinet eTo clean the cabinet and front panel wipe gently with a soft cloth for example For tough dirt apply medium strength detergent diluted in water to a a soft cloth wring out thoroughly wipe off dirt then wi
15. IDEO 1 When playing back on the video disc player press A V INPUT 3 button 2 The video deck can be used for recording while playing back the video disc player 3 To play back a recorded video tape press the A V INPUT 1 button For instructions on playback or recording on the video deck refer to its instruction manual Video Disc Player To Video Input Terminal Left Channel Right Channel To Audio Input Terminal AC OUTLETS AC 120V 60H2 9 25 SPEAKER SYSTEMS El 05 100W DOW MAX 100W AAR SWITCHED UNSWITCHED E IE ILE ee n pou 25 EXAMPLES OF USE WITH A VARIETY OF DIFFERENT EQUIPMENT TV Equipped with Video Input Terminal This combination brings out the best in the AVC20 Output from all audio video equipment is input to the AVC20 the video signals are sent from the Monitor Output Terminal to the television s Video Input Terminal and the audio signals are sent to the speakers TV with Video Input Terminal Video Signal reas Audio Signal Monitor Video Output When using a television equipped with a video auipment input terminal set the VIDEO TV Selector Switch to VIDEO Color Monitor TV with Video Input Terminal etc AVC20 Connections For connection of antennas refer to page 20 or the video deck s instruction manual
16. R BUSHING LOCATING SPEAKERS Speaker location will depend in each case on the size and When a Center speaker is employed See page 18 it shape of the specific room in which the Home Theater is most conveniently mounted above or below the screen System is installed The diagrams below may be used as a but always as close to the screen centerline as possible general guide to speaker placement in rooms of various Because very low frequencies are nondirectional in shapes To avoid interference with the tv picture speakers room a subwoofer See page 8 can usually be loca without special magnetic shielding should ordinarily be almost anywhere convenient in the room However de more than 0 6m 2 ft from the screen In each case it is pending on room acoustics and the particular subwoofer best to consult the tv and loudspeaker manufacturers some locations may be clearly superior to others Consult the subwoofer manufacturer for specifics LOCATING SPEAKERS CONNECTION OF SPEAKERS Connection of 4 Speakers OPERATE SWITCH MONO OUT Normally this switch is SPEAKER AC OUTLET Monophonic Output kept to the left seen OUTPUT SWITCHED Terminals from behind TERMINALS There is one set of four speaker output terminals Use speakers with an impedance of 8 to 16 ohms Connection of Speaker Cables Normal Speaker Connection 1 If the bare speaker wire is too short strip off the vinyl and make the e
17. Video Signals 2 Glass DUE n s 6 we aus olen a Kee Se UR et 28 1 Rubber Bushing os ooo e Re e OR we 2 Lxx UA a eo pi pip V abe rim 2 31
18. e AVC20 power is on Use this outlet to plug in equipment with a maximum power consumption of 100W Use this outlet for example for a self powered subwoofer Supplementary Power Outlets AC OUTLETS a UNSWITCHED These outlets can be used regardless of whether the AVC20 power is on or not Use these outlets to plug in equipment with a maximum power consumption of 100W WARNING Power Consumption of Outlets Never use the AC OUTLETS with equipment which consumes more power than is indicated on the panel for example toasters or hair dryers This could damage the equipment or result in a fire VOLUME BALANCE CONTROL The 20 is equipped with 4 built in power amplifiers The volume of each of these can be controlled separately Volume Control A Press the upper side a to simultaneously increase the volume of all four speakers vomi Press the lower side gt to simultaneously decrease the volume of all four speakers Volume increases faster than it decreases Balance Control FL Increases the volume of the front left speaker FR Increases the volume of the front right speaker Increases the volume of the rear left speaker RR increases the volume of the rear right speaker FRONT Causes the surround image to slowly travel towards the front REAR Causes the surround image to slowly travel towards the rear LEFT Causes the surround image to slowly travel towards the
19. e AVC20 on the two rear channels and use the two front channels with an added amplifier change the U shaped short pins as shown in the diagram 2 Connect the FRONT PRE OUT terminals to the input terminals of the other amplifier using pin plug cables 8 Use the outside speaker terminals for the Rear speakers 4 When this is done the AVC20 volume control can be operated but the volume of the other amplifier must be increased to a suitable level SPEAKER SYSTEMS Remove both the FRONT and REAR short pins and as shown in the diagram connect the FRONT MAIN IN and REAR PRE OUT terminals Right Channel Left Channel Rear Speakers Other Amplifier Right Channel Left Channel Front Speakers 16 2 Using as Surround Processor The AVC20 can be used by disconnecting both the front and rear pre amplifiers and main amplifiers To use the AVC20 as a surround processor with different main amplifiers remove the four short pins as shown in the diagram and use pin cords to connect the PRE OUT termi nals to the input terminals of the other amplifiers When this is done the AVC20 volume control can be ope rated but the volume of the other amplifiers must be increased to a suitable level The AVC20 amplifiers can also be used by connecting Aux level outputs of audio devices to the MAIN inputs SPEAKER SYSTEMS FRON Bape i SS Sa Eo REAR
20. his e Use size AA batteries may result in leakage or damage to the unit Should leakage occur wipe thoroughly and insert new batteries e Replace the batteries when distance of ope ration decreases The replacement interval depends oh the Do not short circuit disassemble or throw number of times used but it is recommend batteries into flames ed that the batteries be replaced at least Do not place objects on top of the remote once every year control unit as the batteries will wear out if When not using the remote control unit for a key is held down an extended period of time remove the Always strictly observe cautions written on batteries batteries Do not use an old battery with a new one or Do not dispose of batteries together with two batteries of different types for example flammable garbage where applicable 11 1 SURROUND SOUND EFFECT SELECTION M SURROUND i ji sess coc 1 LJ z TA eo 2 Use of Volume Button SURROUND BYPASS SPATIAL POWER STATION REMOTE CONTROL 12 The AVC20 provides a choice of 3 surround effects depending upon the program or software being viewed w For programs for which the surround effect is not nece ssary such as news broadcasts press the BYPASS but ton Sound can be heard from the front speakers only DOLBY Press this button for movies etc a SPATIAL Press thi
21. l is depressed the image from the video component connected 3 appears on the monitor The sound of the component connected to the termi nals is produced from the speakers The audio signal from the TAPE input overrides the audio signal from INPUTS 1 2 and 3 This can be recorded on to a video deck connected to the output of either A V INPUT 1 or 2 5 Use of TAPE Center Speaker Center Amplifier SPEAKER With Input on the Left Channel The left speaker output produces sound Input Output Terminals 2 These can be used as input output terminals for a signal processor such as a graphic equalizer Connect as shown in the diagram Depress one of the A V INPUT 1 3 or PHONO to choose which component is to be played back and then depress the button Control by the signal processor is possible Refer to the signal processor instruction manual for details on its use 4 Connections for Use of Input Output Terminals Example 1 Color Monitor 20 Connections qp From Audio Output Terminal From Video Output To Video Input Terminal To Audio Input Terminal 60900090 99090090 From Monitor Output Terminal C D To Tape Input Terminal Audio Component le Compact Disc Player Cassette Deck etc 5 Connections for Use of Input Output Terminals
22. left RIGHT Causes the surround image to slowly travel towards the right LEFT BALANCE RIGHT When the volume of one of the four speakers reaches the maximum level the X indicator flashes When the volume of one of the four speakers reaches the minimum level the x indicator flashes input Volume The Input Volume control located behind the control Adjusting the Input Volume panel door is used to set the maximum volume so D First set the INPUT VOLUME control to the mini that the volume of none of the speakers exceeds a mum Number inside the contro panel door certain level 2 Use the Volume up control and set the AVC20 volume to the maximum the x indicator will flash then bring it down 5 steps Press the Volume down button 5 short times 3 Next gradually increase the Input Volume until a comfortable listening level is reached This is described by the following diagram Greatest volume which y can be produced by the 20 4 Greatest volume set by LIMIT the INPUT VOLUME This mark lights control Volume you most frequently use Minimum volume TT no sound is produced This mark lights Dolby Surround and Input Volume The output level some video disc players or laser disc players is quite high When this is the case DOLBY SURROUND sound may be distorted Should this happen lower the INPUT VOLUME INPUT VOLUME
23. m the actual sound The AVC20 is equipped with three types of surround processors to recreate that sense of presence and let you enjoy surround sound in the privacy of your own home Surround Processors DOLBY SURROUND Provides the optimal sound when watching recent movies especially those encoded with the DOLBY SURROUND or DOLBY STEREO process The front speakers provide the normal stereo effect while the rear speakers reproduce the surround signals This position provides excellent results when watching television programs video soft ware video discs or videotapes of stereo television broad casts CONCERT SURROUND This provides the best results when watching old movies or video recordings of concerts The front speakers provide the normal stereo effect while the rear speakers provide reverberation like that heard in concert halls The reverbe ration time can be adjusted using the CONCERT SURROUND Control SPATIAL SURROUND Use this when watching live sports games to reproduce that stadium feeling Manufactured under license from Dolby Laboratories Licensing Corporation Additionally licensed under one or more of the following patents U S numbers 3 632 886 3 746 792 and 3 959 590 Canada numbers 1 004 603 and 1 037 877 Dolby and the double D symbol are trademarks of Doiby Laboratories Licensing Corporation 4NSTALLING THE GLASS DOOR HINGE GLASS DOOR SCREW 9 RUBBE
24. n tuners 4 PHONO Input Terminals PHONO Input Terminals are used for connection of a Phono Turntable without preamp NOTE Selected input signals including PHONO and TAPE appear at output jacks of A V INPUT 1 A V INPUT 2 and 5 Monitor Output Terminals MONITOR OUT These are used for connection to video input terminals of color monitors or televisions equipped with video input terminals There are two independent output terminals making possible the connection to two com ponents 6 Tape Input Output Terminals TAPE IN OUT Connect an audio cassette deck or the like to these terminals For details refer to page 18 SPEAKER SYSTEMS PORT j QW SWITCHED WOW MAX 100041 UNSWITCHEO 7 These are front speaker pre amplifier output and main amplifier input terminals These are rear speaker pre amplifier output and main amplifier input terminals Use these for connection of an equalizer signal processor or of a pre amplifier or main amplifier other than those of the 20 Usually use the AVC20 with the pre amplifier output terminals connected to the main amplifier input terminals with the supplied U shaped connecting pin The 20 can also be used in the BTL mode or as a surround processor For details refer to pages 15 and 17 Monophonic output Terminal MONO OUT A Use these outp
25. ol SYNTHETIC STEREO Use this control to adjust the effect when the SYNTHETIC STEREO switch is tufned on Expansion becomes greater when turned clock wise and lower when turned counterclock wise Concert Surround Control CONCERT SURROUND Use this control to adjust the effect when the CONCERT SURROUND button 9 is depressed The reverberation time 15 increased when turned clockwise Qi Input Balance Control INPUT BALANCE Use this to balance the left and right channels of the input source 6 INPUT VOLUME Use this control to set the maximum volume Refer to page 10 for details Tone Control Treble and bass tones can be controlled for both the front and rear speakers Use the FRONT control to adjust the tone of the front speakers and the REAR control for the rear speakers Use the TREBLE and BASS controls to adjust treble or bass Turn clockwise to increase the effect or count erclockwise to decrease FUNCTION NAMES AND OPERATIONS REAR PANEL Function Names and Operations D INPUT 1 Input Output Terminals INPUT 2 Input Output Terminals INPUT D and 2 Input Output Terminals are used for connection of components on which recording is possible such as a video deck 3 INPUT Input Terminals INPUT Input Terminals are used for con nection of components for which only playback is possible such as video disc players compact disc players or televisio
26. ophonic From Video Output Terminal To Video Input Terminal From Audio Output Terminal To Audio Input Terminal AC OUT AC 120V 60 Ea e 25 E E29 E 21 21 IOWI _ IDOW IMAX 100W 4 UNSWITCHED 0910 TS SPEAKER SYSTEMS 23 EXAMPLES OF USE WITH A VARIETY OF DIFFERENT EQUIPMENT Video Deck and Video Disc Player The video disc player s video signals entering the 20 are sent from the AVC20 output terminals to the video deck s LINE input terminals and then from the video deck s VHF terminal to the televi sion Video Disc AVC20 Player Pere Video Signals 9 T Audio Signals 1 10 es Antenna Video Deck AVC VHF Antenna UHF Antenna X W DO h Audio Input Terminal To Video Input Terminal C From Video Output Terminal q From Audio Output Terminal OPO COCO ASTI r our Left Channel Left Channel Right Channel A V Right Channel p AU os TAPE FRONT 24 000 0000000 0 00009 OO wr Operation of Video Deck 1 HiFi Operation of A VC20 SC D 1 Set the Input Selector Switch INPUT to LINE VIDEO TV 2 Set the VIDEO TV Selector Switch to V
27. pe with a dry cloth elf the surface of the cabinet comes in contact with a volatile substance such as benzine thinner or insecticide or if wiped with a chemical rag or the like it could be damaged or the paint could peel off 30 Take Care Wl en Installing Do not use the AVC20 in such places as follows e Cold places Below 5 C Places in which vibrations 40 F1 are strong 7 d c Hot places above 40 C Place in which magnetic 105 or in direct force is generated sunlight Q 22 as e Wet or humid places e Places in which ventilation is poor b e Places in which dust grease Unstable places Avoid or smoke are present placing on unsteady stands 22 72 poe 2975 Handling Do not block the ventilation openings Ventilation openings n the cabinet are designed to prevent over heating of internal parts Do not place a tablecloth or cover on top of the 20 or place the AVC20 on a blanket Do not place against a wall Keep at a distance of at least 10 cm 4 in from the wall Do not place heavy objects top of the AVC20 For transporting and storage Avoid excessive shocks When moving turn the power switch off TROUBLESHOOTING Symptom Cause Power does not come Power switch is off a No sound or picture is produced e Power plug is not connected p
28. roperly to an ac outlet Connection cords are disconnected e Connection cords are connected improperly The position of the input selector switch does Measures e Plug in firmly e Press power switch on Connect firmly in the socket Check the connections Change the switch to match the input not match the input of the component being used No sound is produced on e The FULL MUTE switch is on 5 indicator flashes Balance adjustment is incorrect No SURROUND is produced eThe input selector switch TAPE button is Press the TAPE switch to turn off e Press the FULL MUTE switch to turn off Press the RESET button then adjust the volume e The BYPASS button has been depressed eDepress one of the SPATIAL or DOLBY switches For monophonic audio input when the MODE switch is set to MONO sound is very weak when in the DOLBY position After a power outage operation of the AVC20 may be irregular Turn the power off for moment then turn back SPECIFICATIONS Amplifier Section Rated Output all channels driven Main Amplifier Input In Normal Operation Front 30W 30W 20 20 kHz 8 Ohm Rear 30W 30W 20 20 kHz 8 Ohm in BTL Operation 60W 60W 20 20 kHz 8 Ohm Harmonic Distortion In Normal Operation at rated output 0 196 Frequency
29. s For details refer to page 10 5 Input Selector Switches and Indicators AUDIO VIDEO SELECTOR Use these switches to select the program source When the Switch is pressed the sound source is switched to the component connected to the TAPE input terminals while the video source is provided by the A V INPUT whose selector switch is pressed For details refer to page 18 6 REMOTE SENSOR This is the window used for receiving the signal from the supplied wireless remote control unit BYPASS Use this position when you wish to obtain stereo sound without any surround effect Sound is produced only from the two front speakers 8 SYNTHETIC STEREO Use this switch to obtain simulated stereo sound from monophonic signals Use the SYNTHETIC STEREO vol ume control located inside the control panel door to adjust the stereo effect This function can also be used to expand stereo source 9 CONCERT SURROUND This is the best position for viewing televised concerts or old movies Use the CONCERT SURROUND volume control located inside the con trol panel door to adjust the reverbera SPATIAL tion time SURROUND This is the best position for viewing sports or music programs d D DoLBY This is the best position for viewing SURROUND movies O The AVC20 is equipped with the proper Dolby Surround decoder for use especially with video software con
30. s button for sports programs etc CONCERT Press this button for concerts or old movies Refer to page 3 for more detailed information First press the RESET button there is no need to keep it pressed down then press the 4 side of the VOLUME button When held down the volume gradually increases If the volume becomes too loud press the v side When the desired volume is reached release the button From the listening position adjust the volume balance using the controls described below to feel engulfed from all sides while maintaining a good front stage orientation Readjust the overall volume Moos Causes the surround image to slowly travel towards the front REAR Causes the surround image to slowly travel towards the rear OLIO MN Causes the surround image to slowly travel towards the left Causes the surround image to slowly travel towards the right 4 Use of the Preset Volume Buttons It is possible to place in the memory three different volume adjustment settings When the optimal adjustment is reach ed as shown in number 3 above press the STORE button There is no need to keep it pressed in When this is done the PRESET VOLUME indicators 1 2 and Jon the AVC20 will flash While the indicators are flashing approximately 5 seconds press one of the PRE SET VOLUME buttons on the wireless remote control unit The volume adjustment is now stored in the memory Simpl
31. uts for connection to a Sub woofer or center channel amplifier and speaker A sub woofer will transduce only low frequ ency signals a full range speaker will handle the complete audio spectrum The output level is approximately 1V at a rated input Match with the input sensitivity of the speaker or other component to be connected The output signal of terminals 8 is a mixture of the front left and right channels When the volume of the front speakers 15 high the output level also increases This can be used as a center channel output For details refer to page 18 40 Operation Selector Switch Use this switch to select NORMAL or Balanced Transformerless BTL operation NORMAL Operation O Use this position for independent operation of the four power amplifiers O This is the position in which the AVC20 is normally used in this position the AVC20 s output is 30W x 4 BTL Operation O Use this position to use the AVC20 as a stereo amplifier with the four power ampli fiers combined in groups of two O In this position the AVC20 s output is GOW 2 CAUTION TURN OFF AVC20 POWER BEFORE OPERATING THIS SWITCH For details refer to page 15 D Speaker Connection Terminals Use these to connect speakers Refer to page 5 for details 2 Power Cord Plug this into an ac wall outlet 120 Vac 60Hz 49 Supplementary Power Outlets AC OUTLETS m SWITCHED This outlet operates only when th
32. xposed wires the same length 10mm 3 8 in Front Side EXAMPLE With a speaker terminal on the bottom side S gp Rear Side 2 Press down the lever and insert the cord Use a terminal for the side of the speaker and Remove your finger from the lever and pull a terminal for the side on the cord to be sure that it is properly con 3 Raise the lever nected Be sure that the wire does not stick out Put the Operation Switch in the from the cord and come into contact with position wire of another cord as this may damage the equipment FUNCTION NAMES AND OPERATIONS FRONT PANEL 8 AVINPUT AN INPUT 2 AN INPUT 3 PHONO TAPE d 9 Q9 Function Names and Operations Power Switch POWER Use this switch to turn the power of the AVC20 on and off After turning on allow approximately 4 seconds to pass before using During this time the FULL MUTE indicator xj the concen trated indicator panel will flash indicating that the set is in the stand by mode Concentrated Indicator Panel Indicators light up according to the operations performed on the AVC20 SURROUND INDICATOR Three red LEDs are displayed depending on the level at the AVC20 speaker outputs Front Left Channel p Rear Left Channel Front Right Channel 3 Rear Right Channel 4 t4 4 Volume and Balance Controi
33. y press the desired button to obtain the preset volume adjustment later on A volume adjustment setting will remain stored in the memory for approximately one week after the power is turned off To change a preset volume adjustment setting adjust the volume as desired and follow the same procedure as in step 4 above The previous setting in the memory will be erased The preset volume adjustment setting can only be obtained by using the remote control unit 5 Use of Full Mute Button Press this button when you wish to turn off the volume momentarily such as when a visitor arrives unexpectedly or when the telephone rings The FULL MUTE indicator x on the AVC20 will flash Press the button once again to return to the previous volume 13 USE OF THE IMAGE ENHANCER SWITCH Use of the IMAGE ENHANCER Switch The Image Enhancer function is very effective for cleaning up fuzzy pictures or when watching foreign films making movie subtitles clearer Theswitch works in three steps decibels For lesser effect decibels Forgreater effect Switch is tuned off When watching old movies or video software and white shimmering appears on the screen using the Image Enhancer Switch to clear this up may make the screen hard to see Use the switch only when the picture is improved APPLICATIONS 1 Balanced Transformerless BTL Mode The AVC2
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