Nakamichi Ch hu/Ch- ......u Control Amplifier Owner's Manual Nak mlchl is prod ucing Hi-R equi pment for 52 countries of the world. Man y countries have safety reg ulations, to which Nakamichi has to comply during production. The add itional mentioning of "A" on your model means that Ihis product has been produced according to the requirements In the Uni ted States of the Underwri tes Laboratories (UL), as well as other appl icable state and Federal safety standards. Withi n the United States, Nakamlchi has authorized Its local di stributors to offer warra nties only on products which have been produced for th e United States market in accordance with the foregoin g standards. Notice to Purchasers of the Model CA-sn : Reference In th e illustrations and the text Is made to "CA-5 An," but operation and functions are completely Identical to your model. ---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 The lightning fl as h with arrowhead symbol, Withi n an equilateral tri angle, is in tended to alert the user of the presence of un in sufatea "d angerou s voltage" wit hin the produ ct's enclosu re , th at m y be of suffic ient magnitude to con stitut e a risk of elect ric shock to persons. The excla mation poin t with in an equ il atera l tri angle IS Int ended to alert the user 01 the presen ce of Important operating and ma int nance (serv ic ing) Instruct ions, in t he literat ure accompan ying the appli ance. A A. RISK OF ELECTRI[ SHOCK. OOHOTDPEH I Congratulations! You have chosen a truly outstanding product. The Nakamlchi CA-5AlI is a control amplifier deSigned to provide superior performance and utterly pure Signal transmission , It achieves this aim without relying on a large amount of negative feedback, The Multi-Regulated Power Supply and Isolated-Ground principle effectively eliminate crosstalk and interference arising in the power supply. Only strictly selected, high quality parts are used throughout, such as metal-film resistors and circuit boards with oxygen-free copper traces, Circui t design is Simple and effective. The ultimate result is music reproduction without the slightest trace of coloralion . In order 10 take full advantage of this unit's superior performance, please read this manual in its entirety and retain it for future reference, Thank you , Nakamlchi Corporation. Please record the Model Number and Serial Number in the space provided below and retain these numbers. Model Number and Serial Number are located on the rear panel of the unit. Model Number : CA- 5~AIl ~::.:..!..5n ~~~ e;./CA -:::;~_ _ _ __ Serial Number: _ _ _ _ _ _ _ __ _ _ Safety Instructions The following safety instructions have been Included in compliance with safety standard regulations, Please read them carefu ll y, 1. Read Instructions - Ali the safety and operating instructions should be read before the appliance is operated. 2. Retain instructions - The safety and operating instructions should be retained for future reference, 3. Heed Warnings - Adhere to all warn ings on the appliance and in the operating instructions. 4. Follow Instructions -All operating and use instructions should be followed, 5. Water and Moisture - The appliance should not be used near water -for example, near a bathtub, washbowl, kitchen sink, laundry tub, in a wei basement, or near a swimming pool, etc. 6 . Carts and Stands - The appliance should be used only with a cart or stand that is recommended by the manufacturer. 7. Wall or Ceiling Mounting - The appliance should be mounted to a wall or ceiling only as recommended by Ihe manufacturer, S Venti lation - The appliance should be situated so that its location or positi on does not interfere with Its proper ven ti lation. For example, the appliance should not be situated on a bed, sofa, rug or similar surface that may block the ventilation openings; or placed in a built -In installation, such as a bookcase or cabinet that may impede the flow of air through the ventilation openings. 9, Heat - The appliance should be situated away from heat sources such as radiators, heat registers, stoves, or other appliances (including amplifiers) which produce heat. 1O,Power Sources - The appliance should be connected to a power supply only of the type described in the operating Instructions or as marked on the appliance. 11.Grounding or Polarization-precautions should be taken so that the grounding or polarization means of an appliance is not defeated. 12,Power-Cord Protection -Power- supply cords should be routed so that they are not likely to be walked on or pinched by items placed upon or against them, paying particular attention to cords at plugs, conveni ence receptacles, and the point where they exit from the appliance. 13.Cleaning- The appliance should be cleaned only as recommended by the manufacturer. 14. Nonuse Periods - The power cord of the appliance should be unplugged from the outlet when left unused for a long period of time. 15.0bject and Li quid Entry - Care should be taken so that objects do not fall and liquids are not spil led into the enclosure through openings. 16.0amage Requ iring Service - The appliance should be serviced by qualifi ed service personnel when : A The power-suppl y cord or the plug has been damaged; or, B. Objects have fallen, or liquid has been spilled into the appliance; or, C. The appliance has been exposed to rain; or, 0 , The appliance does not appear to operate normally or exhibits a marked change in performance; or, E. The appliance has been dropped, or th e enclosure damaged. 17. Servicing - The user should not attempt to service the appliance beyond that described In the operating instruction . All other serviCing should be referred to qualified service personnel. WARNING TO PREVENT FIRE OR SHOCK HAZARD, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE. This equipment generates and uses rad io frequency energy and If not in stall ed and used properly, that is, in st rict accordance with the man ufact urer's instruct ions, may cause interference to radiO and television reception . It has been type tested and found to comply wi th the limits for a Class B computing device in accordance wit h the specifi cations in Subpart J of Part 15 of FCC Ru les , whi ch are deSign d to provi de reasonable prot ecti on against such interference in a residential installation. However, there is no guarantee tha t interference wi ll not occur in a particu lar install ation. If this equipment does cause interferen ce to radi o or television recept ion, whi ch can be determined by turning the equ ipment off and on, the user is encouraged to try to correct the interference by one or more of the fol lowing measures : - reorien t the receivi ng antenna - relocate this equipment wi th respect to the rece iver move th is equipment awa y from th e recei ver plug thi s equipment into a different ou ti et so that equipment an d receiver are on different branch cirCUits . If necessary, Ihe user shoul d cons ult the dealer or an experienced radloltelevision technician for additional suggestions. The user may fi nd the following booklet prepared by the Federal Commu nications Commission helpful : "How to Identify and Resolve Radio-TV Interference Problems". This booklet is avai lable from the U.S. Government Pri ntin g Office, Wash ington, DC 20402, Stock No. 004-000-00345-4 Caring for the Exterior Panels Caring for the exterior panels of th e unit should be limited to wipi ng with a soft. dry cloth . AVOid using solvents or alcohol-based cleaners. 2 Controls and Features Power Indicator Power Switch o Output Level (Volume) Control r:..J\"SAIl ~u.1t· u. A," I't..... ;:::::::::::::::::::::::::::::::::::::j:::::::::::::::::::::::+:::::::::::::::+=::::::::::::~:::::::;;p;;;;_~"::=::'...J Tuner Input Jacks Auxiliary Input Jacks Phono Input Jacks Tape Deck 1 Playback (Input) Jacks Tape Deck 2 Playback (Input) Jacks Une Output Jacks 2 UtIL .. 10<0 .. . . ~ .... I CD Input Jacks Ground Terminal -{ Una Output Jacks 1 Tape Deck 2 Recording (Output) Jacks AC Power Connector \) . .~ C Tape Deck 1 Recording (Output) Jacks C) Tape Monitor Switch Tape 1 For playback of a tape deck connected to the Tape 1 jacks. For playback of a tape deck Tape 2 connected to the Tape 2 jacks. Source To listen to the program source chosen with the Input selector. Copy' ... 2: For lape dubbing from tape deck 1 to tape deck 2. Copy 1 : For tape dubbing from tape deck 2 to tape deck 1. Tone Controls Serve to adjust the tonal balance. By turning a knob clockw ise, the respective range is emphasIzed, and by turning it one word the frequenc ies are attenuated. To actil/ate the tone control circuits. set the Tone switch to "On ." Bass : From the center clickstop position . adjustment is possible within the range of ± 10 dB (at 20 Hz) Treble: From the center clickstop position, adjustment is possible wi thin the range of ±10 dB (at 20 kHz) Tone Switch Setting this switch to "On" activates the tone control circuits. When the switch is set to "Off," the circuits are bypassed and the signal Is routed directly 10 the power amplifier section, to further enhance sonic purity. o o Cartridge load/Gain Selector When a moving-magnet cartridge is used, th is switch selects the termination capacitance. With moving-coil cartridges, th e switch controls the gain of the head amplifier. o Terminal for Remote Power On/Off Switching Connect the opti onal System Power Control strip (SPC- 1) to this termina l 2" 8 Input Selector Serves to select one of the program sources connected to the CA-SAll : tuner, turntable, CD player, etc. o o o Balance Control Serves to adjust left/right speaker balance. (\) Cartridge Selector Set this switch to the correct position for the type of phono cartridge in use. Voltage Selector AC voltage is factory set for the country In which you purchased your unit. The voltage selector permits re-seltlng of mains voltage in case the unit is to be used in a different country. Note: Safety regulations in certain countries prohibit Inclusion of a voltage selector. This feature, therefore, may be absent trom your unit. 3 Connections Turntable Tuner Tape Deck 2 To L, R Inputs ~ To L, R Outputs _ - - - - _ Power Ampli fier 2 ~ To L, R Inputs To l_, R Outputs To L, R Inputs To L, R Outputs To AC W II Outlet or Opti onal System Power Control Strip (SPC-1) CD Player Tape Deck 1 Power Ampl ifier 1 System Power Control st rip (SPC-1) Establish connections to other system components as shown in the above example. Wh ile making connections, be sure to set the power switches of all components to Off. · For easy identification, the upper row of all input and output jacks of this unit serves th e left channel and the lower row the right chan nel. · Never use a moving -magnet cartridge with the selector set to the "Moving Coil" position, as this will result in severe distortion and possible damage to this unit and to th e loudspeakers. Turntable Connections Connect the ground lead from the turnta ble to the Ground (GND) termi nal of th is un it. · Cartridge Selector The Cartridge selector switch on the rear panel of this unit must be set to the correct position, depending on the type of phono pickup used. Moving Magnet: For moving-magnet (MM) type cartri dges (including the so-called MI, 1M and VM types), as well as for high-output moving-coil cartridges with a rated output voltage of 1.0 mV or more. Moving Coil: For moving-coil type cartridges with a rated output voltage of less than 1.0 mV · Cartridge Loading This unit Incorporates a Cartridge Load/Gain selector to ensure optimum term ination and gain for best results with a wide range of phono cartridges. When the Cartridge selector is set to "Moving Magnet," a choice of three differen t load capac itance values is provided (100 pF, 200 pF, or 300 pF) When the Cartridge selector is set to "Movi ng Coil," the head amplifier gain can be switched in three steps (24,30, or 36 d B). When determining the capacitance setting for moving-magnet ca rtridges, the so-called floating capacitance added by the connecting cables between the cartridge and this unit's Phono Inputs must also be taken into cons ideration . As a rule of thumb, the desired capacitance can be found by subtracting the cable capaCi tance (approx. 100 pF for ordinary cables) from the recommended capaCitance loading for your cartridge (usually li sted in the spec sheet). However, as the floating capaCitance can vary considerably depending on the t ype and len gth of cable involved (i ncluding tonearm wir ing etc.), a final decision on the optimum position of the Cartridge Load/Gain selector should be made by ear. The Cartridge Load /Gain selector permi ts switching of the moving-coil preampli fier gain in three steps, to acc ...