Owner's Manual VIDEO / HI-FI SYSTEM EXPANDER 222 HARTREY AVENUE EVANSTON, ILLINOIS 60202-3696 U.S.
NOTICE This equipment generates and uses radio fre. quency energy and if not installed and 1 properly, that is, i n strict accordance w i manufacturer's instructions, may cause interlerence t o radio and television reception. I t has The AVC20 offers the choice of three different types of surround-sound effects: Dolby Surround, Spatial Surround, or Concert Surround. The AVC20 is equipped with Four Power amplifiers. The AVC20 allows central control of most video equipment.
SURROUND-SOUND EFFECTS Surround-sound The AVC20 is equipped with three types of surround processors which provide a sense of presence and expansion. 4 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".
LOCATING SPEAKERS Speaker location will depend in each case on the size and shape of the specific room in which the Home Theater System is installed. The diagrams below may be used as a general guide to speaker placement in rooms of various shapes. To avoid interference with the tv picture, speakers without special magnetic shielding should ordinarily be more than 0.6m (2 f t ) from the screen. In each case, i t is best to consult the tv and loudspeaker manufacturers.
CONNECTION OF SPEAKERS Connection of 4 Speakers + I MONO OUT Monophonic Output Terminals I I OPERATE SWITCH Normally this switch is SPEAKER AC O U T L E T kept to the left (seen OUTPUT (SWITCHED) from behind). TERMINALS There i s one set of four speaker output terminals. Use speakers with an impedance of 8 to 16 ohms. Normal Speaker Connection Connection of Speaker Cables 1. If the bare speaker wire is too short, strip off the vinyl and make the exposed wires the same length.
FUNCTION NAMES AND OPERATIONS-FRONT PANEL Function Names and Operations @ REMOTE SENSOR @ 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 on the concentrated indicator panel will flash, indicating that the set is in the stand-by mode. @ Concentrated Indicator Panel lndicators light up according to the operations performed on the AVC2O.
DOLBY This is the best position for viewing SURROUND movies. 0 The AVC20 is equipped with the proper Dolby Surround decoder for use especially with video software containing the DOLBY SURROUND ,('"or movies in which the DOLBY ,,,,,,~,,~,,,,,, mark 00 at the end. STEREO rnark~OImre*m~mI'"appears The Dolby Surround system i s manufactured under licence from Dolby Laboratories Licencing Corporation. Refer to page 3 for more detailed information.
FUNCTION NAMES AND OPERATIONS-REAR PANEL Function Names and Operations @ A-V INPUT 1 Input/Output Terminals @ A-V INPUT 2 InputIOutput Terminals @ @ A-V INPUT @ and @ Input/Output Terminals are used for connection of components on which recording is possible, such as a video deck. A-V INPUT 3 lnput Terminals A-V INPUT@ lnput Terminals are used for connection of components for which only playback is possible, such as video disc players compact disc players, or television tuners.
@ Operation Selector Switch Use this switch to select NORMAL or Balanced Transformerless (BTL) operation. NORMAL Operation 0 Use this position for independent operation of the four power amplifiers. 0 This is the position in which the AVC20 is normall y used. 0 In this position, the AVC20's output is 30W x 4. BTL Operation 0 Use this position to use the AVC20 as a stereo amplifier, with the four power amplifiers combined in groups of two. 0 In this position, the AVC20's output is 60W x 2.
VOLUME-BALANCE CONTROL The AVC20 is equipped with 4 built-in power amplifiers. The volume of each of these can be controlled separately. Volume Control m IvoLuME Press the upper side to simultaneously increase the volume of all four speakers. Press the lower side to simultaneously decrease the volume of all four speakers. Volume increases faster than it decreases. Balance Control FR ,, RL FL: lncreases the volume of the front left speaker. FR: lncreases the volume of the front right speaker.
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 .When using the wireless remote control, always point i t toward the remote control sensor on the AVC20. 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 t o minimize exposure t o surrounding light. .
1. SURROUND-SOUNDEFFECT SELECTION The AVC20 provides a choice of 3 surround effects, depending upon the program or software being viewed. For programs for which the surround effect is not necessary, such as news broadcasts, press the BYPASS button. Sound can be heard from the front speakers only. -1Press this button for movies, etc. -1-1 Press this button for sports programs etc. m JCONCERTI- Press this button for concerts or old movies. *Refer to page 3 for more detailed information. 2.
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 reached 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 ( , and ()on the AVC20 will flash. While the indicators are flashing (approximately 5 seconds), press one of the PRESET VOLUME buttons on the wireless remote control unit.
USE OF THE IMAGE ENHANCER SWITCH Use of the IMAGE ENHANCER Switch The lrnage Enhancer function i s very effective for cleaning up fuzzy pictures, or when watching foreign films, making movie subtitles clearer. The switch works in three steps: 3 dB (decibels) . . . . . . . . . . For lesser effect. 0 6 dB (decibels) . . . . . . . . . For greater effect. 0 OFF. . . . . . . . . . . . . . . Switch i s tuned off.
APPLICATIONS (1) Balanced Transformerless (BTL) Mode The AVC20 has a built-in 4-way 30W amplifier system, but by switching to BTL operation, it can be used as a 2-way 6oW amplifier system. BTL . . . Balanced Transformerless Switching 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 NORMALIBTL switch t o the BTL side.
Connection (6) @ To use the AVC20 on the two rear channels and use the two front channels with an added amplifier, change the U-shapedshort pins as shown in the diagram. @ Connect the FRONT-PRE OUT terminals to the input terminals of the other amplifier using pin plug cables. @ Use the outside speaker terminals for the Rear speakers. @ When this i s done, the AVC20 volume control can be operated, but the volume of the other amplifier must be increased to a suitable level.
(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 terminals to the input terminals of the other amplifiers. When this i s done, the AVC20 volume control can be operated, but the volume of the other amplifiers must be increased to a suitable level.
Center Arnpl~fier Center Speaker SPEAKER Center Speaker With Input on the Left Channel The left speaker output produces sound. - (3) MONO OUT 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 television, the resultant center localization can become confusing.
(4)Connections for "Use of W I Lm/ Input/Output Terminals - Example 1" Color Monitor AVCZO Connections I Video Disc Player (etc.) Video Deck IHiFil m Audio Output TerminalFrom Video Output To Video Input Terminal To Audio lnput Terminal AVCZO From Monitor Output Terminal I To Tape lnput Terminal Audio Component (Compact Disc Player, Cassette Deck, etc.) ( 5 ) Connections for "Use of (TAPEl InputIOutput Terminals - Example 2" AVC20 Rear Panel .
EXAMPLES OF USE WITH A 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.
EXAMPLES OF USE WITH A VARIETY OF DIFFERENT EQUIPMENT (Stereo Video Deck) USE O F INPUT SELECTOR SWITCHES SOURCE I SELECTOR SWITCH Mono MONO Off Mono SYNTHETIC STEREO Stereo BYPASS [m Stereo CONCERT SURROUND Stereo SPATIAL SURROUND stereo DOLBY SURROUND Television p x i 1a l Cable I I I -- J r - -3 7 - - II HiFi Video Deck rg . . l . - _ I VHF Antenna U H F Antenna DISPLAY Set the AVC20 AUDIOIVIDEO SELECTOR to A-V INPUT 1.
EXAMPLES OF USE WITH A VARIETY OF DIFFERENT EQUIPMENT Operation of the AVC20 (Two Video Decks) First, decide which deck is to be used primarily. In the axample below, a stereo video deck is used as the primary deck, while a monophonic video deck i s Uxed 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 telesvision. a When playing back on the Stereo video deck.
EXAMPLES OF USE WITH A VARIETY OF DIFFERENT EQUIPMENT Operation of Video Deck 1 (HiFi) T \ I ~SO dLINE (Video Deck and Video Disc Player) The video disc player's video signals entering the AVC20, 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 television. Video Disc , , , , . . c d 7 f q - - + I I Video Signals Audio Signals Video Deck Antenna Line - - - - - - - - - - - - - - - - - - .
EXAMPLES OF USE WITH A VARIETY OF DIFFERENT EQUIPMENT (TV Equipped with Video lnput Terminal) This combination brings out the best in the AVC20. Output from all audiolvideo equipment i s input to the AVC20, the video signals are sent from the Monitor Output Terminal to the television's Video lnput Terminal, and the audio signals are sent to the speakers.
EXAMPLES OF USE WITH A VARIETY OF DIFFERENT EQUIPMENT (Overall Connections) Connect equipemrnt for playback only, such as a TV tun(( video disc kplayer, here for best results. Connect equipment for playback and recording, such as a video deck, as below for best results. E X : Video Disc Player Color Monitor or T V with Video Input Terminal Color Monitor To AC outlet A C l 2 0 V . 60Hz o For speaker connection, refer to page 5.
CAUTIONS ON USAGE Take Care Wllen Installing For Safety Do n o t use the AVC2O i n such places as follows: Power Source Connect t o a household power ac outlet. c o l d places ( I4O0F1) ~5Oc /. ~ , Places i~n which~ vibrations l are strong Place i n which magnetic Hot places (above 400C [105OF]) or i n direct force is generated Wet or humid places Places i n which ventilation Power Cord D o n o t bend or twist the power cord o r place heavy objects o n t o p of it.
Measures Cause Symptom 1 = Power does not come a Power plug is not connected properly to an ac outlet. l Power switch is off. l Plug No sound or picture is produced a Connection cords are disconnected. a Connection cords are connected improperly. a The position of the input selector switch does not match the input of the component being used. a Connect firmly in the socket. a Check the connections. l Change the switch to match the input. No sound is produced a The input selector switch on.
