SU-700 - Audio Amplifier TECHNICS - Free user manual and instructions

USER MANUAL SU-700 TECHNICS

Stereo Integrated Amplifier SU-700 OPERATING INSTRUCT'IONS eThese instructions also apply to units of different colour. Before operating this unit, please read these instructions completely.

We want to thank you for selecting this product and to welcome you to the growing family of satisfied Technics product owners around the world. We fee I certain you wil! get maximum enjoyment from this new addition to your home. Please read these operating instructions carefully, and be sure to keep them handy for convenient reference. Accessory

• AC power supply cord (Reter to page 4.) Be sure to disconnect the mains cord belore adjusting the voltage selector. Use a minus (-) screwdriver to set the voltage selector (on the rear panel) to the vollage setting lor the area in which the unit wil! be used. (It Ihe power supply in your area is 117 V or 120 V, set to the "127 V" position.) Note that th is unit wil! be seriously damaged il th is setting is not made correctly. (There is no voltage selector lor some countries; the correct voltage is already set.)

The configuration ol the AC outlet and AC power supply cord differs according to area. Technical Specifications

(DIN 45500) Tone controls 50 Hz. +10 dB~-10 dB BASS TREBLE 20 kHz. \-10 dB~-10 dB 50 Hz. +9 dB Loudness control (volume at -30 dB) Output voltage and impedance 150 mV REC OUT Channel balance, CO/AUX 250 Hz-6,300 Hz :::1 dB 45 dB Channel separation, AUX 1 kHz 560 mV/3300 Headphones output level and impedance Load impedance MAIN or REMOTE MAIN and REMOTE AMPLIFIER SECTION 40 Hz-20 kHz continuous power output both channels driven 2 X 60W (80) 1 kHz continuous power output 2 X70W (80) both channels driven Total harmonie distortion 0.04% (80) rated power at 40 Hz-20 kHz 0.03% (80) half power at 1 kHz Intermodulation distortion 0.05% rated power at 60 Hz: 7 kHz=4:1, SMPTE, 80 Power bandwidth both channels driven, -3 dB 10 Hz-30 kHz (80. 0.04%) Damping factor 50 (80) Input sensitivity and impedance PHONO

2.5 mV/4.7kO

TUNER, CO/AUX

150 mV/22kO TAPE 1, 2/EXT PHONO maximum input voltage (1 kHz, RMS) 150 mV SIN rated power (80) PHONO 71 dB (IHF. A: 72 dB)

TUNER, CO/AUX, TAPE 1,2/EXT

90 dB (IHF. A: 98 dB) Frequency response RIAA standard curve PHONO ±0.8 dB (30 Hz-15 kHz)

TUNER, CO/AUX, TAPE 1,2/EXT

GENERAL 360W Power consumption Power supply AC 50 Hz/60 Hz. 240V For Australia AC 50 Hz/60 Hz. 220V For continental Europe For others AC 50 Hz/60 Hz. 11 OV/127V/220V/240V Oimensions (WXHXO) 430 X 86 X 240 mm (16-15/16" X 3-3/8" X 9-7/16")

5.3 kg (11.7 lb.)

Weight Note: Total harmonie disloriion is measured by Ihe digital spectrum analyzer (H.P. 3045 system). -2­

Suggestions for Safety

• Use a standard electrical AC wall outlet

• If water is spilled on the unit

1. Use trom an AC power souree ot high voltage, sueh as

tor air eonditioners, is very dangerous. Be exlremely carelul nol 10 make aconnection 10 the electrical outlet lor a large air conditioner or central-heating unit which uses high voltage, because there is the possibility ol fire.

2. A DC power souree eannot be used.

Be sure 10 check the power source carefully, especially on a ship or olher place where DC is used. Be extremely careful if water is spilied on the unit, because a fire or serious electric shock might occur. Immediately disconneet the power cord plug, and consult wilh your dealer.

• Place the unit wh ere it will be weil ventilated, and away from direct sunlighf

Place th is unit at least 10 cm (4") away from wall surfaces, elc., and away from direct sunlight. Be careful that curtains and similar materials do not obstruct the ventilation holes.

• Connection and removal of the power cord plug

1. Wet hands are dangerous.

A dangerous electric shock may result if Ihe plug is touched by wet hands.

2. Don't pull the power eord.

Always grasp the plug; never pull Ihe cord itself.

• Keep the unit away from heaters, etc. Heat can damage the external surfaces as weil as internal circuits and components.

• Never attempt to repair or reconstruct this unit A serious eleclric shock might occur if Ih is unit is repaired, disassembied or reconstructed by unauthorized persons, or if Ihe internal parls are accidently touched. - x

• Avoid spray-type insecticides Insecticides might cause cracks or "cloudiness" in the cabinet and plastic parts ol this unit. The gas used in such sprays might, moreover, be ignited suddenly. [x~

• For families with children Never permit children 10 put anything, especially metal, inside th is unit. A serious electric shock or malfunclion could occur il articles such as coins, needies, screwdrivers, elc. are inserled through the ventilation holes, etc. ol Ihis unit.

• Never use alcohol or paint thinner

These and similar chemicals should never be used, because they may damage the finish. [~x_~_· _,~~~_.~~~]

• Turn off after use II the unit is left lor a long lime with the power on, this will not only shorten its useful operation life. but mayalso cause other unexpected trouble.

• If trouble occurs If, during operation, the sound is interrupted or indicators no longer illuminate, or if abnormal odor or smoke is detected, immediately disconneet the power cord plug, and contact your dealer or an Authorized Service Center. -3­ "TAPE 1n terminals "CDtAUX" terminals Connect a tuner. Use these terminals to connect a compact disc player (digital audio disc), or tape deck (playback only). Tuner (option) Connect an audio tape deck. Compact disc player (option) "PNDND H terminals Connect a turntabie. Turntable (option)

(GND) Stereo connection ~"-->-I cable (option) (GND) l,~ Ground wire (option) "TAPE 2IEXT" terminals Speaker connection cord (option) Connect a second tape deck or a graphic equalizer.

Tape deck 2 (option) UNE IN UNI: OUT (right)

Oeft) Main speaker systems (option) Speaker terminals ("SPEAKERS")

• Connection of speaker wires

Strip oft the outer covering, and twist the center conductor. ® Turn completely to the left. @ Insert wire and turn completely to the right. Pull wire to insure a proper connection.

Household AC outlet The configuration of the AC outlet and AC power supply cord differs according to area. Speaker impedance selector Set to the position corresponding to the impedance of the speaker systems being used. If a speaker system with an impedance value outside these ranges is connected, low output, protection circuit aclivation or amplifier damage may occur.

• 11 either the main or the remote speaker systems are used: 4~611 (........ ): For speaker impedance of 8~1611( ........): For speaker impedance of Nole: 4~611. a~ 1611.

• 11 both main and remote speaker systems are used: To prevent damage 10 circuitry, never short-circuit plus (+) and minus (-) speaker terminals.

1) If the impedance of both systems is 16 ohms, set the speaker

impedance selector to "16n".

2) If the impedance of both systems is a ohms, or one is a ohms

and the other is 16 ohms, set the speaker impedance seleclor to "a11" . '---------------------------------------~

• Remote speaker terminals ("REMOTE") Note: For connection 10 a second pair of speakers. Be sure 10 make this setting before swilching Ihe power "on". -4­

Front Panel Controls and Their Functions .Pn\l\,~r put selectors (input selector) switch/indicator (power) __ At the "on" position, the indicator wil! illuminate to indicate ~ that the power is on. Before turning the power on. make sure the volume conlrol is set to the low position.

These selectors are used to select the sound sou ree 10 be heard, such as a disc, radio broadcasl, etc. The correspondlng indicator illuminales during operalion 10 indicate the selecled sound souree.

io muting switch (muting)

Safety operation indicator . - - - - - - ; - -....... ( operation) Set to Ihe "on" posilion when a dlsc is being changed or to temporarily reduce Ihe volume level. In addition, Ihe volume level can be adjusled more precisely if th is switch is set to the "on" position lor listening at a low volume level. This indicator illuminates after the power is switched on and the unit IS in the operation condition. If the unit detects an abnormal condition in the circuitry, such as a DC component in the output, etc., or if the posilive (+) and negalive ( - ) connection wi res from the speaker terminals are short-circuited. Ihe prolection circuilry will luncllon 10 slop Ihe unit's operation and thls indicator will no longer illuminate. II this occurs, switch olf the power, and then, after finding and correcting the cause ol the problem. switch the power switch on once again.

Volume control (volume) Balance control (balance) Set to the "on" position when listening to music at low volume. Auditory perceplion of sound in Ihe low Irequency range falls oft al low volume, but when Ihe switch is in Ih is posilion, this deficiency is compensated for, so thai Ihe tuil impact of the musical performance can be enjoyed. Tone controls (bass/treble) ape-monitor selectors (tape monitor) peaker selectors (speakers) These selectors are used lolurn Ihe speaker syslems on and off. Headphones jack (phones) Note: Be sure to set Ihe volume level to the minimum ("0") position belore connecting the headphones. sou ree (.a...,. I): Set to this position 10 lislen la a phono disc or radio broadcast, or 10 listen to equipmenl connected 10 the auxiliary-input terminals ("CDAUX'') tape 1/tape 1 ~2 (I--.a), tape 2/ext (I-..a): Set to this position to playback or monitor Ihe sound from a tape deck. The indicators above the tape-monitor selector illuminate la indicale tape 1 or tape 2. tape 1 ~2: Tape recordings from tape deck 1 10 tape deck 2 can be made by pressing the left switch inward to the "tape 1" position, re leasing the right switch outward to the "souree" position, and by preparing tape deck 1 for playback and tape deck 2 for recording. Nole that recordings cannol be made from lape deck 2 10 tape deck 1. Protection Circuitry The protection circuilry may have operaled if eilher of the following conditions is noliced: -No sound is heard wh en the power is turned on. -Sound stops during a performance. The funclion of this circuitry is to prevent circuilry damage if, for example, the positive and negative speaker connection wires are "shorted", or il speaker systems with an impedance less than the indicated rated impedance ol the amplifier are used. If th is occurs, follow the procedure outlined below:

1. Turn olf the power.

2. Determine Ihe cause of the problem and correct it

3. Turn on the power once again.

Note: Wh en Ihe pralection circuilry functions, Ihe unit will not operate unless the power is lirsl turned olf and then on again.

Operation Power: "on"

Before turning the power on, make sure the volume control is set to the low position.

Select speaker systems to be used.

"sou ree" (.... ~.) To listen to tape set to the "tape 1/tape 1"'2" or "tape 2/ext" : If bath tape-monitor selectors are pressed at the same time, only the sound Irom tape deck 2 will be heard. Select the sound sou ree. CD/aux: Press this button to listen to equipment connected to the "CDlAUX" terminal. tuner: Press this button to listen to radio broadcasts. phono: Press this button 10 listen to phono discs.

Follow the instructions accompanying your equipment for set-up and operation of the selected sound sou ree.

Adjust tone quality as desired. Low-range sound is adjusted with bass control ("bass"), and high-range sound with treble control ("treble"). Adjust the volume Set to the "on" position to temporarily reduce the volume level.

• ....'UIU." to the "on" position when listening al low volume level. the left/right volume balance. While listening to an AM broadcast or a monaural FM broadcast, balance the sound so that it seems to be heard from the center, between the speakers. When listening through headphones Headphones (option) If sound from speakers is not wanted, set the speaker selectors to the "off" position. Note: Set volume control to minimum ("0") position before connecting headphones. After listening is finished, power switches of all equipment should be turned "olf". By using two tape decks, tape-to-tape recording can be performed. To record from tape deck 1 to 2 (Recording is not possible from 2 to 1):

1. Left tape monitor selector .... "tape 1/tape 1"'2" (I .... )

Right tape-monitor selector. . . . . . . . . . .. "source" (........ I)

2. Make the adjustment of Ihe recording level by using the

controls on the tape deck 2.

3. Begin the tape deck 1 (TAPE 1) for playback and the tape

deck 2 (TAPE 2) lor recording.

1. Follow above steps 1 through 6.

2. Operation of tape deck connected to the "TAPE 1" and/or

"TAPE 2/EXT" terminals.

3. By using the controls on the tape deck, adjust the recording

level. Then begin recording.

Troubleshooting Guide Belore requesting service lor this unit, check the chart below lor a possible cause ofthe problem you are experiencing. Some simple checks or a minor adjustment on your part may eliminate the problem and restore proper operation. II you are in doubt about some ol the check points, or ilthe remedies indicated In the chart do not solve the problem, relerto the directory ol Authorized service centers (enclosed with this unit) to locate a convenient service center, or consult your Technics dealer lor instructions. Probable cause(s) Probtem f49$Ound !sheera \Vb." {he, Pb.er "turned on. Suggested remedy Connections are incomplete or incorrect to the speaker systems, etc. The incorrect input selector has been pressed. sello the "tape" position. Whétl IÎsteQing to IIt81'eo

The positive (+) and negative (~) connections ol the speaker connection wires are reversed.

• Check to be sure that all connection wires are correctly connected.
• Check to be sure that the correct selector is pressed.
• Except lor tape playback, set the tape-monitor selectors to the "sou ree" position.

ï~notheard. fI"om its correct po$itiol'l. Whe,n"$t~nlng toster-eo .~nd,H1e left andtlght sounds are reversed;

• Check the speaker connection wires and con neet The left and right connections ol the speaker connection wires are reversed. them correctly il necessary. f-::T:::h-e-cl:-e""ft:-a-n-dC-Cri:-g-:-h-:-t-c-o-n-n-e-c'"'jj-o-n-s-o-=I-:-th:-e-c-o-n-n-e-c----i-:-.C heck t he con nection w-i:-re"-s-t'-o-o-t:7he-r eq u i pme nt ti on wires connected to other equipment are reversed. HA,:"'••.","'"to-W-·-p'"':lt,...c..,.h-éd....,.,.n'-o""'l:-s..,.e....,("""h'""u-m-··","-f-::T:7h power cord or a Iluorescent light, etc., is ~.. "bUZ~)ls haard. near the connection wires.

~$~ is .not heard fromthe connection wires so that Ihe positive and negative connections are correct. and connect them correctly il necessary. Try separating the amplifier Irom theelectri-C­ applianee as lar as possible.

• Reverse the connection ol the power cord plug. The conneclion ol the grouna:-w-'-ir-e"7is-'-in-c-o-r-re-c""'tc---i--.-'=C-7-heck to be sure that the grounding connection or incomplete. is correct. The speaker connection wires are
• Check and correct the connections ol the disconnected. speaker con necti:-o_n-;-w_i-:-re_s_._ _ _-,-_-c-_ _ _-l .... The balance control ol the amplilier is not set
• Set the mark on the balance control to the center to the center position. positi()_n-;.-;-c;-------,. The protection circuitry has lunctioned
• Switch of! the power, and, after determining and correcting the cause, turn on the power once because the positive and negative speaker connection wires are "shorted" or speaker again. systems with an impedance less than the indicated rated impedance ol the amplelier are used. i • Maintenance To clean thls unit, use a soft, dry cloth. II the surlaces are extremely dirty, use a soft cloth, dipped into a soap-and-water solution or a weak detergent solution. Wring the cloth weil belore wiping the unit. Wipe once again with a solt, dry cloth. Never use alcohol, paint thinner, benzine, nor a chemically treated cloth to clean this unit. Such chemica Is may damage the linish of your unit. -7­

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Alimentation "on" ( I -... )