Akai AM-52 User's Manual
Contents
1. 11 Specifications Model 52 8 ohms 4 ohms Power Output by FTC 20 Hz 20 kHz 70W 0 03 90W 0 05 by DIN 1 kHz 80W 0 7 120 0 7 Music Power 135W 270W Power Bandwidth 5 Hz to 50 2 0 06 Total Harmonic Distortion 0 005 at Source Direct Mode S N IHF A PHONO MM 84 PHONO 64 CD Tuner DAT 99 dB at Source Direct Mode Residual Noise 0 1 mV Cross Talk 10 2 60 dB Channel Separation 10kHz 50 dB Damping Factor 1 kHz 8 ohms 50 Required Speaker Impedance AorB 4 ohms to 16 ohms AandB 8 ohms to 16 ohms Input Sensitivity Impedance PHONO MM 2 0 mV 47 kohms PHONOMC 0 2 mV 100 ohms CD Tuner Tape DAT 150 mV 47 kohms Max Input Level PHONO MM 160 mV PHONO WMC 16 mV Output Level Impedance Tape 150 mV 1 kohms Frequency Response PHONO Deviation RIAA 0 5 dB CD Tuner DAT 5 Hz to 100 kHz 3 dB at Source Direct Mode Tone control Bass 8 5 dB at 100 Hz Treble 9 0dB at 10 kHz Dimensions 425 W x156 x377 D mm 16 7 6 1 14 8 inches Weight 11 4 kg 25 2 Ibs For improvement purposes specifications and design are subject to change without notice Model2. AM 32 8 ohms 4 ohms Power Output by FTC 20 Hz 20kHz 50W 0 03 60W 0 05 by DIN 1 kHz 60 W 0 7 g0 W 0 7 Music Power 100 W 200 W Power Bandwidth 5 Hz to 50 kHz 0 06 Total Harmonic Distortion 0 005 at Source Direct Mode S N IHF A PHONO MM 82 dB PHONOMC 62 dB CD Tuner DAT 97 dB at Source Direct Mode Residual Noise 0 1 mV Cross Talk 10 kHz 60 dB Channel Separation 10kHz 50 dB Damping Factor 1 kHz 8ohms 50 Required Speaker Impedance AorB 4 ohms to 16 ohms AandB 8 ohms to 16 ohms Input Sensitivity Impedance PHONO 2 0 mV 47 kohms PHONO WMC 0 2 mV 100 ohms CD Tuner Tape DAT 150 mV 47 kohms Max Input Level PHONO 160 mV PHONOWMC 16 mV Output Level Impedance Tape 150 mV 1 kohms Frequency Response PHONO Deviation RIAA 0 5 dB CD Tuner DAT 5 Hz to 100 kHz 3 dB at Source Direct Mode Tone control Bass 8 5 dB at 100 Hz Treble 9 0 dB at 10 kHz Dimensions 425 W x156 H x377 D mm 16 7 x6 1 x14 8 inches Weight 11 2 kg 24 7 Ibs For improvement purposes specifications and design are subject to change without notice
3. The ADAPTOR jack s short pins have been removed Replace the short pins when an audio pro cessor or a graphic equalizer is not con nected to the Akai amplifier if the BASS TREBLE and BALANCE controls do not work when adjusted or if tape playback cannot be heard when the TAPE MONITOR switch is de pressed The SOURCE DIRECT switch is depressed Turn off the SOURCE DIRECT switch by de pressing it if distorted or little sound is heard during record playback The CARTRIDGE switch is not set at the ap propriate position for the cartridge that you are using Confirm the type of cartridge with its instruc tion sheet or specifications of the turntable then set the CARTRIDGE switch accordingly during playback you cannot hear the bass fully or the sound does not seem to be in stereo if there is little or no sound during play back The MUTING switch is depressed Turn down the VOLUME control if necessary then turn off the MUTING switch by depress ing it Check the speaker connections Make sure that wires are connected to terminals and wires to terminals Should a problem persist write down the model and serial numbers and all pertinent data regarding warranty coverage as well as a clear description of the existing trouble Then contact your nearest au thorized Akai Service Station The speaker
4. Power cord Connect this cord to a household AC outlet If using the Akai Audio Timer connect the power cord to its AC OUTLET AC OUTLETS not on some models Connect the power cords of the components con nected to the Akai amplifier SWITCHED The power to these AC outlets is cut when the Akai amplifier is turned off Make sure thatthe total power consumption of the components connected to these outlets does not exceed 200 watts _LINEIN On the ADAPTOR jacks The Akai amplifier is equipped with speck ADAP TOR jacks for connection of a graphic equalizer audio processor Refer to page 8 The DAT jacks Connect a DAT Digital Audio Tape desk or the 2nd 32 or the 3rd AM 52 cassett deck to these jacks Refer to page 8 Cassette Deck 5 Controls 000 BTEREG wTEGRATED 52 POWER switch and Indicator To turn on and off the amplifier The indicator will light when the power is turned on SOURCE DIRECT switch and Indicator For clearer low distortion playback of a com pact disc record radio or DAT tape The in dicator will light when the switch is turned on When the switch is turned on the BASS and TREBLE tone controls and the BAL ANCE control are ineffective Input Select buttons CD PHONO TUNER AUX and DAT and Indicators For selection of a playback source The in dicator of the button you choose will light up when depressed V
5. ADAPTOR jacks To achieve more finely adjusted tone compensa tion connect a separate graphic equalizer or audio processor to your Akai amplifier Amplifier Audio Processor or Graphic Equalizer INPUT OUTPUT DAT jacks Amplifier or Cassette deck ee ooo Remove the short pins from the amplifiers ADAP TOR jacks Connect the amplifier s ADAPTOR OUT jacks to the Audio Processor s or Graphic Equalizer s INPUT jacks Connect the amplifier s ADAPTOR IN jacks to the Audio Processor s or Graphic Equalizers OUTPUT jacks Refer to the operator s manual of your audio pro cessor or graphic equalizer for further details Set your Akai amplifier s built in BASS and TREBLE tone controls to their center position when using an audio processor or graphic equalizer For recording and playback with a DAT deck Connect the amplifier s DAT REC jacks to the DAT deck s LINE IN jacks with a connection cord Connect the amplifiers DAT PLAY jacks to the DAT deck s LINE OUT jacks with a connection cord Note DAT deck Digital Audio Tape deck e You can use cassette deck instead the DAT deck Connect it to the DAT jacks of the amplifier During tape playback or tape dubbing opera tion You can record from a compact disc a record the radio or an auxiliary source with a DAT deck during tape playback or tape dubbing operation 1 Select
6. Do not depress both the TAPE 1 and TAPE 2 TAPE MONITOR switches at the same time during recording if you want to monitor during recording when the two decks are in the recording mode turn one of the TAPE MONITOR switches on and turn the other one off Tape Dubbing For the AM 52 user Depress TAPE 1 of the TAPE MONITOR switch Depress TAPE 2 of the TAPE MONITOR switch so it is OFF the indicator light will turn off Prepare the TAPE 1 deck for playback Prepare the TAPE 2 deck for recording To make a copy of a prerecorded cassette tape O Begin recording Do not depress the TAPE 1 switch during tape dubbing If depressed tape dubbing will not be performed Tape dubbing from the TAPE 2 deck to the TAPE 1 deck cannot be done For the AM 32 user 1 Depress the AUX button of the input select button For tape dubbing connect a cassette deck for play back as follows D Prepare the cassette deck connected to the AUX jacks for playback Prepare the cassette deck connected to the Connection z TAPE jacks for recording Connect the LINE OUT jacks of the cassette deck to the AUX jacks of the amplifier with a connection 3 Begin recording cord If you want to monitor with the head deck during tape dubbing depress the TAPE MONI TOR switch to on After monitored depress the TAPE MONITOR switch once again to turn off 0000 TLINE OUT Expanding Your Hi Fi System
7. Let senjoy the 6 iraia 7 Expanding Your Hi Fi system 8 The parts of the Akai Amplifier 9 Problem Let s check 10 The speaker 10 Specifications 11 WARNING To prevent fire or shock hazard do not expose this appliance to rain or moisture Power requirements Power requirements for electrical equipment differ from area to area Please ensure that your machine meets the power requirements in your area If in doubt consult a qualified electrician 120 V 60 Hz for USA and Canada 220 V 50 Hz for Europe except UK 240 V 50 Hz for UK and Australia 127 V 220 V 50 60 Hz for Saudi Arabia 110 V 120 V 220 V 240 V 50 Hz 60 Hz converti ble for other countries Voltage conversion not on all models This machine can be set to 110 V 120 V 220 V or 240 V as required Each machine is preset at the factory according to destination However if vol tage conversion is necessary follow the instruc tions below 1 Disconnect the power cord 2 With a flat bladed screwdriver rotate the selec tor located on the rear panel so that the correct voltage for your area is displayed 120V 110V VOLTAGE SELECTOR What you should know to protect yourself Watch out You might get an electric shock Never tou
8. a recording source with an input select button such as the CD PHONO TUNER or AUX buttons 2 Prepare for playback and prepare the DAT deck for recording 3 Begin recording if you want to monitor during recording depress the SOURCE DIRECT switch to turn ito After you have finished monitoring depess the SOURCE DIRECT switch once again turn it off The parts of the Akai Amplifier If you want to reduce the volume instantly during playback Depress the MUTING switch MUTING to ON To Toresume the normal listening volume level Depress the MUTING button once again to OFF For the best sound reproduction from a compact disc record the radio or an auxiliary source Depress the SOURCE DIRECT switch to ON The indicator will light REST Note When the SOURCE DIRECT switch is turned on the BASS TREBLE and BALANCE controls are ineffective Tape playback can also not be per formed when the switch is on but recording will operate Loudness compensation The human ear is less sensi tive to low frequencies at low LOUDNESS volume levels If these fre ac quencies are not boosted or compensated the sound will seem unnatural A more natural sound can be obtained by boosting the bass responses This is called loudness compen sation When listening to music at low volume levels depress the LOUDNESS switch on for an instant boost of the bass Headphone use and SPEAKER sw
9. protect the circuit from damages When speak ers with less than rated impedance are used the protection circuit will short circuit the and speaker cords Therefore should the sound be cut during playback 1 Turn off the Akai amplifier 2 Check for and correct the cause 3 Turnon the Akai amplifier Let s Enjoy Music Set the following controls VOLUME control _ Minimum to 0 before tuming on the power BALANCE control Center of your amplifier LOUDNESS switch OFF MUTING switch SUBSONIC switcth m OFF MODE switch STEREO 52 BASS and TREBLE tone controls _ Center position SPEAKERS switches Set either A or B if using 1 system or both ON if using 2 systems Set both OFF if using head phones 4 For compact disc playback D Depress the CD button Play back a compact disc Adjust the VOLUME control to suit i your taste Depress the POWER switch to turn on the power Depress the PHONO button 9 Play back record Adjust the VOLUME contro to suit your taste D Depress the POWER switch to turn on the power For record playback 7 Listening to radio Depress the TUNER selector Tune in a station you want to isten to O Adjust the VOLUME contra to su
10. system Speaker placement The playback characteristics of the speaker sys tem s are greatly influenced by the placement and the room in which the speakers are used For example if the speaker system is placed near a hard wall the bass will sound better but the treble might seem too strong Play back some music with out using the tone controls and move the speaker system around to find the best location However please keep the following in mind pte the speaker system Ona flat and solid surface which does not trans mit too many vibrations ventilated not very humid place Away from direct sunlight and heatsources stoves etc Away from your turntable and TV To prevent damage to the speaker system Donotraise the volume too high Turn off the Akai amplifier when changing connecting the player system s cartridge Lower the volume when changing radio stations and when cueing or reviewing tapes Donot touch the speakers diaphragms How to clean the speaker system s e Clean the speaker system s with as oft dry cloth if they are very dirty use a mild detergent To protect the diaphragms the vibrating parts do not spray liquid cleaner directy onthe speaker system Always spray iton a cht h first Never use alcohol paint thinner chesnically treated cloth or use a spray type imeccticide near the speaker system as this wil clamage the finish
11. AKAI STEREO INTEGRATED AMPLIFIER AM 32 AM 92 Operator s Manual This manual applies equally to models AM 32 and AM 52 except where otherwise noted llustration shows mode AM 52 lt Fran ais Deutsch i Nederlands Pagina 36 47 Espa ol P gina 48 59 This is the Akai Stereo Integrated Amplifier Use this Akai amplifier in combination with the other components in the Akai Pro series and you will have an excellent hi fi system Features High power dual pole DC servo power amplifier SOURCE DIRECT switch See page 9 SUBSONIC filter switch See page 9 MUTING switch See page 9 TAPE MONITOR switch TAPE 1 TAPE 2 for AM 52 See page 7 STEREO MONO MODE switch AM 52 See page 9 A amp B SPEAKER switches See page 9 MC cartridge capable high gain type PHONO equalizer amplifier See page 9 LOUDNESS switch See page 9 BASS and TREBLE tone controls See page 9 oo speaker protection circuit See page 5 Large diameter speaker terminals See page 4 a Digital Audio Tape deck jacks See page 8 Exclusive adaptor input and output jacks See page 8 Large capacity power supply section Low noise Dual FET coupled type phono equali zer and power amplifier Table of contents Waring caer eae coud Gos a EA beast 1 What you should know to protect yourself ee Making the right connections 3 4 CONOS aE a s alow be 5
12. LINE OUT jacks of the cassette deck left and right to the TAPE 2 PLAY jacks left and right of the Akai amplifier a 0000 CD Player Cc OUTPUT C Turntable Right channei speaker system SPEAKERS gt CD AM loop antenna TUNER F To AC outlet SPEAKER terminals Be sure to connect the wires to the terminals red wires to the terminals black 4 Left speaker to the Left L terminals and Right speaker to the Right R terminals How to connect the speakers 1 Strip off 1 cm length of vinyl covering from the end of the speaker cord 2 Loosen the Red and Black speaker terminals by turning them counter clockwise These termi nals cannot be removed 3 Twist wires firmly then insert the speaker cords Left channel through the openings of the speaker terminal speaker system guards 4 Turn the terminals clockwise to securely fasten SPEAKERSL the wires Note For connection we recommend the use of high power large diameter type speaker cords available in the Hi Fi stores IMPORTANT Do not cross connect speaker sys tems Use either the A terminals or B terminals for connection of a pair of speakers Do not connect one speaker to an A and the other to a B terminal Speaker impedance Use speakers of 8 to 16 ohms impedance only Refer to the marking on the amplifier s rear panel Amplifier
13. OLUME control To increase or decrease playback volume level CARTRIDGE switch MC MM Adjust according to the type of cartridge you are using MUTING switch To reduce volume instantly during playback without using the VOLUME control LOUDNESS switch For instant compensation of tone setting at low volume level TAPE MONITOR switch AM 52 only TAPE 1 TAPE 2 For cassette tape playback or monitoring during recording operation MODE switch AM 52 only MONO STEREO To select the playback mode Normally set this switch to m STEREO AM 52 Q TAPE MONITOR indicator 52 only TAPE 1 TAPE 2 Tells you the TAPE MONITOR switch is en gaged BALANCE control To adjust the left and right channel balance SUBSONIC switch ON OFF To reduce unwanted ultra low frequency dis turbance less than 15 Hz such as rumble during record playback BASS and TREBLE Tone Controls To adjust the high note treble and low note BASS levels PHONES jack For headphone listening SPEAKER switch SYSTEM A SYSTEM B ON OFF To select the speaker system Protection circuit When the Akai amplifier is turned on no signal will be output to the speakers for several seconds This is due to the protection circuit which prevents output of noise when the Akai amplifier is turned on The protection circuit also functions during play back to protect the speakers from overloading and to
14. c shock do not use this polarized AC power plug with an extension cord receptacle or other outlet unless the blades can be fully inserted to prevent blade exposure 3 Making the right connections Before connecting Turn off all the components before connecting Connect the power cord last e Make sure that you connect the white PIN plug to the left white jack the red PIN plug to the right red jack Connect everything securely Loose connec tions can lead to distortion To prevent damage to the cords connect and disconnect by holding the plug and not the cord e Make sure that the power cords and the connec tion cords do not get tangled with each other This can lead to distortion Make sure to connect the output cord of the player system to the PHONO jacks Do not con nect any other component such as a CD player to these PHONO jacks ifthe turntable you are using has a ground wire connect it to the ground terminal of the amplifier AUX jacks This is an auxiliary jack Connect such components as avideo disc player or cassette deck for play back to these jacks For dubbing from the input source to one tape deck for AM 32 or two tape decks for AM 52 we recommend using the AUX jacks for the input source TAPE 2 jacks for AM 52 Connect the LINE IN jacks of the 2nd cassette deck left and right to the TAPE 2 REC jacks and right of the Akai amplifier and connect the
15. ch the plug with wet hands Always pull out by the plug and never the Only let a qualified professional repair reassemble the Akai Amplifier An unauthorized person might touch the internal parts and re ceive a serious electric shock Never allow a child to put anything especially metal into the Akai Amplifier Let s protect the Akai Amplifier too Use only a household AC power source Never use a DC power source Make sure that the power consumption of each component does not exceed the wattage speci fied on the rear panel If water is spilled the Akai Amplifier discon nect it and call your dealer Make sure that the Akai Amplifier is well ventilat ed and away from direct sunlight Be careful not to block the side ventilator of the Akai Amplifier To avoid damages to the internal circuits and the external surface keep away from heat stoves etc Avoid using spray type insecticide near the Akai Amplifier It can damage the finish and might ignite suddenly To avoid damaging the finish never use dena turated alcohol paint thinner or other similar chemicals to clean the Akai Amplifier Place the Akai Amplifier on a flat and solid surface If you don t plan to use the Akai Amplifier for a long period of time disconnect the power cord To enjoy the Akai Amplifier for a long time please read this operator s manual thoroughly CAUTION To prevent electri
16. eft and right channel speaker system The BALANCE control Use the BALANCE control when you feel that there is a deficiency in the left and right balance due to the speaker placement It is best to use a monaural source to test the balance After setting the volume tune in an AM station and turn the BAL ANCE control to left or right to boost the volume in the right or left channel respectively TAPE MONITOR switches AM 52 The MONITOR switches are independent of the other input select but tons It is necessary to switch them OFF in order to listen to a different source The AUX button Depress the AUX button to play back a component which is connected to your amplifier s AUX jacks such as a cassette deck for play back or a video disc player TAPE MONITOR TAPE 1 TAPE 2 OA Problem Let s check No sound Check to see if the power cord is connect ed securely to the household AC outlet The input select button corresponding to the music source you want to listen to is engaged Press the appropriate input select button The TAPE MONITOR switches are de pressed when you want to monitor an audio source The VOLUME control is set too low Adjust the VOLUME control The SPEAKERS switch is turned OFF Turn ON the A and or B SPEAKERS switch Protection circuit is engaged Check the speaker cord connections and the speaker impedance
17. it a your taste Depress the TAPE MONITOR switch Piay back a tape Adjust the VOLUME contra to suit your taste Depress the POWER switch to turn on the power D Depress the POWER switch to turn on the power For tape playback After playing back a tape turn off the TAPE MONITOR switch by depressing the button again Before playing back a tape make sure that the SOURCE DIRECT switch is turned off 7 Basic recording Let s Record The VOLUME BALANCE LOUDNESS and BASS and TREBLE tone controls can be adjust ed when recording If the tape deck is a head deck one which has independent heads for erasing recording and playback the just recorded signals can be monitored by depressing the TAPE MONITOR switch TAPE 1 or TAPE 2 for AM 52 The play back sound of the input source can be adjusted with the VOLUME control of the amplifier but it will have no effect on the recording volume level To adjust the recording volume level use the tape deck s REC LEVEL control Select the recording source with the proper Input select buttons To record from a compact disc Depress the CD button a record Depress the PHONO button the radio Depress the TUNER button an auxiliary source Depress the AUX button DAT tape Depress the DAT button Play back the source Prepare the tape deck or the DAT deck for recording Begin recording For the AM 52 user
18. itches The SPEAKERS A and B buttons allow you to switch between the speakers connected to the A SPEAKERS terminals or the B SPEAKERS termi nals on the rear panel of the Akai amplifier If only one set of speakers is connected to the rear SPEAKERS terminals simply set the other button to the OFF position When listening through headphones set both speaker but tons to their OFF positions C To adjust tone during playback Use the BASS and TREBLE tone controls To increase or decrease the bass eo wes Soo AN N use the BASS control To increase or decrease the treble use the TREBLE control During record playback If your player system uses the MC Moving Coil type cartridge Set the CARTRIDGE selector switch a CARTRIDGE Otherwise set this switch to MM Before setting the CAR TRIDGE switch read car tridge s instruction sheet If the woofer cone vibrates during record Co playback Set the SUBSONIC switch to ON PRAN Set the SUBSONIC switch to OFF for other source playback MODE switch AM 52 only If you want monaural sound playback set the MODE switch to MONO With the MODE switch in the off position playback will be in stereo When a normal sound VCR monoaural sound type is connected to one of the AUX jacks left or right Set the MODE switch to MONO during playback The same sound will heard from the l
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