Rotel RT-820 User's Manual
Contents
1. PHOTO RT 820 Quality Uncompramised ROTE ENGLISH AM FM STEREO TUNER RT 820 MW LW FM STEREO TUNER RT 820L INTRODUCTION We at Rotel want to thank you for purchasing our audio product Rotel audio products are designed to use the latest electronic technology and they incorpo rate our long experience as a specialist manufac turer of audio equipment We are confident that you will find satisfaction in the high quality sound and top performance and that you will find pleasure in the functional beauty achieved through human engineering concept Before starting operation please read this instruction manual thoroughly and acquaint yourself with the proper mode of using the unit and all its connections We hope you will enjoy top notch performance for many years to come INSTALLATION Be sure to place the unit in a level and flat place where it is free from humidity vibration high temperature and not exposed to direct sunlight Be careful not to place the unit in a highly enclosed place such as near a wall or on a bookshelf A poor ventilation will cause unde sirable effects to the unit POWER SUPPLY CONNECTION For power the unit requires the normal house electrical current AC You may simply plug the unit into a wall outlet or into your ampli fier s convenience AC outlet CAUTION Do not apply power without first making sure the proper connections are com pleted If you live in U K and your2. TION Not available for U K Canada and Scandinavia The unit is a variable voltage equipment that can run on 120V 220V or 240V power supply Your unit should already be preset at the proper voltage for use in your area However if you move to an area where the power supply voltage is different consult your dealer SPECIFICATIONS FM TUNER SECTION Usable Sensitivity mono 11 2 dBf 2 0 uV 50 dB Quieting Sensitivity MONO es FRE li he 16 dBf 3 5 uV SIA aee TT 39 4 dBf 50 uV Signal to Noise Ratio at 65 dBf IONS EE tte i 70 dB SUNDA ON aes oe ee 65 dB Harmonic Distortion at 65 dBf MA ega ratas Sa mate des 0 3 mono 0 6 stereo Frequency Response 35 to 13 500 Hz 1 5 dB 1 5 dB Capture Ratio 2 0 dB Alternate Channel Selectivity 12400 KHI aja cocne dian 60 dB Spurious Response Ratio 68 dB Image Response Ratio 45 dB IF Response Ratio 75 dB AM Suppression Ratio 62 dB Stereo Separation 100 Hz 1 kHz 10 kHz 33 dB 38 dB 33 dB Subcarrier Product Ratio 60 dB SCA Rejection Ratio 60 dB Antenna Input 300 ohms balanced 75 ohms unbalanced AM TUNER SECTION MW LW RT 820L SoM SS als BS sore es 300 pV m 1000 uV m SRBC wrsece P E ee 30 dB 30 dB Signal to Noise Ratio a 45 dB 45 dB Image Response Ratio 35 dB 45 dB IF Response Ratio 35dB 35 dB PRG ST Built in ferrite loopstick antenna MISCELLANEO
3. US Power Requirement 120V 60 Hz 220V 50 Hz 240V 50 Hz or 120 220 240V 50 60 Hz depending on destinations Power Consumption 8 0 watts Dimensions overall 430 W x 66 H x 319 D mm 16 15 16 x 2 19 32 x 12 9 16 Weight AGED is ast daa satan 3 1 ka 6 82 Ibs e Specifications and design subject to possible modification without notice
4. e quency 3 Stereo Indicator Glows when stereo broadcasting signal is tuned in Note that when stereo signal is very weak the unit will not give stereo reproduction and the indicator will not light up 4 Signal Strength Indicator The three LEDs show incoming signal strength the receiving condition is optimal when all three LEDs are illuminated 5 FM Mode Muting Button When this button is pressed to ON any FM broadcast is received monaurally Be sure to leave the button in the released OFF position during normal stereo FM reception In the OFF position interstation noise generated when tuning in an FM station will be reduced 6 AM FM Selector Press AM button for AM signal reception and FM button for FM signal reception RT 820L gives AM reception in either MW or LW mode Depress MW button for middle wave reception and LW button for long wave reception 7 Tuning Knob Used to tune in to a desired station Rotate the knob to the right to tune for higher frequen cies and to the left for lower frequencies Coro OPERATION Before commencing operation check to make sure all antenna amplifier and power con nections are properly made 1 Set the volume control on the amplifier to minimum position and amplifier function switch to TUNER position or to AUX position if the tuner is connected to AUX terminal 2 Turn on the amplifier and press the Power button on the t
5. ly along a wall or the like in a location where signal reception is optimal Securely connect the antenna to FM antenna terminals marked 3009 on the rear panel If outdoor type FM antenna is installed the T shape antenna is not necessary For proper use of your outdoor FM antenna follow the instructions below AMPLIFIER 1 Be sure to select the most appropriate type of antenna for the signal reception condi tions in your area 2 A 75 ohm coaxial cable is recommended in connecting the antenna to the unit 3 Set the antenna in a position as high as possible if buildings obstructions nearby affect reception 4 The 75 ohm coaxial antenna cable should be properly hooked up to the designated antenna terminals on the rear panel Locate the terminals labeled 7592 Connect the center conductor of the cable to the left hand ter minal and connect the outer braided conductor of the cable to the right hand terminal marked G mountains or other RT 820L or UK model only Tu G NI 300 T 75 GO oc a m AM Antenna Erect the AM ferrite bar antenna provided on the rear panel If you install outdoor AM antenna connect the antenna lead wire to the antenna terminal marked AM BUILT IN AM ANTENNA COAXIAL SOCKET OUTDOOR AM ANTENNA AASA FM 6 aM Ae EXCLUSIVE NOTES FOR THE U S A Outdoor Antenna Grounding If an outside antenna is connected to the recei
6. uner 3 Depress FM or AM button of the tuner function selector On RT 820L select among FM MW and LW buttons 4 Tune in to the desired station by means of tuning knob 5 Raise the volume to the desired level and enjoy listening HUM AND NOISE Hum often accompanies activation of power supply If hum is generated try replugging the power cord into the wall outlet reversing the plug this time Other possible causes of hum include improper routing of connecting cords try changing cord position or incorrect pin plug insertion Check all connections if hum persists If noise is introduced it is usually caused by improper positioning of antenna cable or improper antenna installation Use a 75 ohm cable for outdoor FM antenna and minimize multipath to obtain optimal signal reception Note that during signal reception the unit may pick up noise from other household electric appliances as when switching power on or off In that case check the relative location of the appliances and keep them away from the unit or vice versa as necessary Note 1 In a location near a broadcasting station very strong signals may cause noise or distortion depending on the type of antenna used In that case install an attenuator between the antenna and the tuner Note 2 Inside a concrete building FM signals are weakened and satisfactory reception may be difficult An outdoor FM antenna will best remedy such a situation VOLTAGE SELEC
7. unit comes with 2 core cord without a plug be sure to read the exclusive caution for U K EXCLUSIVE NOTE FOR U K If your unit comes with a 2 core cable without a plug make certain live and neutral leads are connected to the proper terminals Check that the terminals are screwed down firmly and no loose strands of wire are present IMPORTANT The wires in this mains lead are coloured in accordance with the follow ing code BLUE NEUTRAL BROWN LIVE As the colours of the wires in the mains lead of this apparatus may not correspond with the coloured markings identifying the terminals in your plug proceed as follows The wire which is coloured BLUE must be connected to the terminal which is marked with the letter N or coloured BLUE or BLACK The wire which is coloured BROWN must be connected to the terminal which is marked with the letter L or colour ed BROWN or RED CONNECTION TO INTEGRATED AMPLIFIER A pair of RCA cords marked OUTPUT ex tends out from the rear panel of the unit These cords should be plugged into the TUNER or AUX terminals of the amplifier Be sure to connect the cord with white plug to the left channel L terminal and cord with red plug to the right R channel terminal ANTENNA INSTALLATION AND CONNECTION FM Antenna Proper installation of antenna is the key to smooth signal reception To install the attached T shape indoor antenna stretch it taut and secure horizontal
8. ver tuner be sure the an tenna system is grounded so as to provide some protection against vol tage surges and built up static charges Section 810 of the National Electrical Code ANSI NFPA No 70 1978 provides information with respect to proper arounding of the mast and supporting Structure grounding of the lead in wire to an antenna discharge unit size of grounding conductors location of antenna discharge unit connection to grounding electrodes and requirements for the grounding electrode See figure a Use No 10 AWG copper or No 8 AWG aluminum or No 17 AWG copper clad steel or bronze wire or larger as ground wires for both mast and lead in b Secure lead in wire from antenna to antenna discharge unit and mast ground wire to house with stand off insulators spaced from 4 feet 1 22 meters to 6 feet 1 83 meters apart DOWNLEAD OR LEAD IN WIRE la b GROUND TO TUNER CLAMP A MAST ME GROUND kid ANTENNA WIRE a b S DISCHARGE UNIT c GROUND CLAMPS SUITABLE GROUNDING ELECTRODE ORIVEN SB1682 c Mount antenna discharge unit as closely as possible to where lead in enters house 8 INTO THE EARTH 2 12 44 METERS J SWITCHES AND CONTROLS 1 Power Button This button turns on the unit The LED indi cator above it will glow when the power is on Press the button a second time to turn off the power 2 Dial Scale The dial pointer LED indicates tuning fr
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