Pre-Amplifier Owner´s Manual
Thank you and congratulations on your purchase of this Yamaha product. ¡¡ You can enjoy the high-quality stereo sound of this preamplifier at home. ¡¡ This Owner’s Manual describes the unit’s features, connection procedures, and operations. ¡¡ To use the product properly and safely, we suggest that you read this manual and Safety Brochure (separate booklet) thoroughly. Keep the manual in a safe, accessible place for future reference.
Table of contents Features . . . . . . . . . . . . . . . . . . . . . . . . 2 Operations About this manual . . . . . . . . . . . . . . . . . 2 Supplied accessories . . . . . . . . . . . . . . . . 4 Turning the power on . . . . . . . . . . . . . . 28 Maintenance . . . . . . . . . . . . . . . . . . . . . 4 Selecting the input and output . . . . . . . . 28 Mirror-finish side panels . . . . . . . . . .
Supplied accessories Please make sure that the following accessories are included in the package. • • • • • Remote control Batteries (AAA, R03, UM-4) (x2) Power cord Owner’s Manual (this book) Safety Brochure (separate booklet) WARNING Do not use the supplied power cord for other devices. Maintenance To use this product for an extended period of time, we recommend that you maintain it regularly. WARNING • Check the power cord regularly to see if it is dusty. If so, wipe off the dust completely.
Part Names and Functions This section lists the names and describes the function of various parts on the front and rear panels, and the remote control.
Front panel A. STANDBY/ON/OFF (Power) switch/ indicator Turns the power to the unit on (standby) or off. STANDBY/ON: Switches between standby and on using the A AMP key on the remote control. OFF: Turns the power to the unit off.
D. TRIM selector Switches the headphone amp gain. The unit will adjust the volume level when headphones are plugged in to avoid sudden changes in volume by modifying the level balance between the audio output from the PHONES jack and from the speakers. Choices: −6 dB, 0 dB, +6 dB, +12 dB E. GAIN selector Switches the preamp gain. The unit will smoothly adapt to the power amp gain and speaker sensitivity, enabling you to make fine volume adjustments.
Front panel H. BASS control K. EXT. DIRECT switch/indicator Adjusts the low-frequency response in the range from −10 dB to +10 dB (in 0.5 dB steps). The center position produces a flat response. If you press the EXT. DIRECT switch once, the EXT. DIRECT indicator will light up, and the audio source input at the EXT. IN jacks will be output at the connected output jacks. For more information, refer to “Connecting another preamplifier” (page 23) and “Selecting the input and output” (page 28).
L. INPUT selector/indicator N. AUDIO MUTE switch/indicator Enables you to select the input source to play back. Options are: PHONO, PHONO BAL, TUNER, CD, BAL 1, BAL 2, LINE 1, and LINE 2. The indicator for the selected input source lights up. Press this switch to reduce the current volume level by approximately 20 dB. The indicator will light up. Press again to restore the audio output to the previous volume level. The indicator will turn off.
Rear panel Note For information regarding the connection procedure, refer to “Connections” (page 19). A. PHONO jacks RCA and XLR-type jacks. If the INPUT selector is set to PHONO, the signals at the RCA-type PHONO jacks will be the input source. If the INPUT selector is set to PHONO BAL, the signals at the XLR-type PHONO jacks will be the input source. Your preamplifier comes with a shorting plug installed on each RCA-type PHONO input jack.
* The illustration above shows the model for Europe. C. BAL 1/BAL 2 jacks E. PHASE selector These are two sets of XLR-type balanced input jacks. If the INPUT selector is set to BAL 1 or BAL 2, signals at the corresponding XLR jacks will be the input source. Specifies the HOT pin position for the XLR-type balanced input jacks (BAL 1 and BAL 2 jacks). NORMAL: Pin #2 is specified as HOT. INV.: Pin #3 is specified as HOT. For more information, refer to “Balanced and unbalanced connections” (page 14).
Rear panel G. CD jacks Note These are RCA input jacks. If the INPUT selector is set to CD, signals at these jacks will be the input source. Connect your CD player here. • Connect the LINE 2 IN jacks and LINE 2 OUT (recording) jacks to the same component. • The LINE 2 OUT (recording) jacks will not output any signals if the INPUT selector is set to LINE 2 or the EXT. DIRECT switch is pressed. H. LINE 1 jacks These are RCA input jacks.
* The illustration above shows the model for Europe. Note O. REMOTE IN/REMOTE OUT jacks The volume level is fixed. Operating the VOLUME control or GAIN selector on this unit will not change the volume level of the signal from the EXT. IN jacks. Adjust the volume level using the volume control on the component connected to the EXT. IN jacks. These are monaural mini jacks. Connect external components that support the remote function here.
Balanced and unbalanced connections XLR jack (male) Lever This unit features XLR-type balanced jacks and RCAtype unbalanced input jacks. 2 Note Do not use balanced and unbalanced connections between two components simultaneously. Doing so would create a ground loop that could generate static and noise. Balanced connection XLR connector (female) 2 1 1 3 3 A balanced connection is designed to cancel and prevent unwanted noise.
Unbalanced connection If you are connecting an audio component that features only standard RCA jacks, use the RCA jacks on this unit for unbalanced connections. For unbalanced connections, unbalanced cables with RCA connectors should be used. These jacks and connectors do not feature a male or female design nor polarity differences. If the PHASE selector is set to NORMAL, pin #2 becomes Hot.
Remote control A. Infrared signal transmitter Outputs infrared control signals toward the unit. B. A AMP key AMP OPEN/CLOSE CD 1 2 Turns on the power to the unit or switches it to standby mode. For more information regarding standby mode, refer to “Front panel” (page 6). BAL BAL C. Input select keys UNBAL PHONO 1 2 LINE CD EXT.DIRECT TUNER BAND PRESET SOURCE LAYER VOLUME Enable you to select the input source to be played back.
E. A CD key H. VOLUME +/− keys Turns on the power to a connected Yamaha CD player, or switches it to standby mode. Adjust the volume level. F. OPEN/CLOSE key Opens or closes the disc tray of a connected Yamaha CD player. For more information, refer to the owner’s manual for your CD player. Note The VOLUME +/− keys on the remote control will not affect the volume level if EXT. DIRECT is selected as the input source.
Installing batteries in the remote control 1 2 Remove the battery compartment cover. Insert two batteries (AAA, R03, UM-4) according to the polarity markings (+ and −) on the inside of the battery compartment. 1 2 3 CAUTION • Do not use a new and old batteries at the same time. Otherwise, fire, burns, or irritation due to leaking battery liquid might be caused. • Do not use two different types of batteries at the same time.
Connections This section explains how to connect the unit to an audio source, such as a tuner or CD player, and a power amplifier. CAUTION Turn off the power to all components before making any connections. NOTICE • Do not use balanced and unbalanced connections between two components simultaneously. Doing so would create a ground loop that could generate static and noise. • If you are planning to connect external components, read and follow the instruction manuals for those components.
Connecting an external component Turntable Turntable Network audio player 20 CD player CD player Tuner BD player Hard disk recorder, etc.
Other preamplifier Power amplifier AV amplifier, etc. Power amplifier Active subwoofer NOTICE Do not use balanced and unbalanced connections between two components simultaneously. Doing so would create a ground loop that could generate static and noise.
Connecting a turntable Connect your turntable to the PHONO jacks on this unit. The unit provides XLR-type balanced jacks and RCAtype unbalanced input jacks. Balanced connection Turntable Connecting a recording component You can connect a recording device, such as a hard disk recorder to the unit, and record audio input from the unit. Connect the recording component to both LINE 2 IN jacks and LINE 2 OUT (recording) jacks.
Connecting another preamplifier Connecting a power amplifier and an active subwoofer If you connect the output of another preamplifier to the EXT. IN jacks on this unit and press the EXT. DIRECT switch, the source signal will pass through the unit and will be output to the connected power amplifier. The source signal input at the balanced EXT. IN jacks will be output at the balanced BAL jacks. The source signal input at the unbalanced EXT. IN jacks will be output at the LINE 1 and LINE 2 jacks.
Trigger connections Controlling the power on-andoff operation of a connected component, such as a power amplifier, in sync with this unit Controlling the unit’s power onand-off operation in sync with a connected component, such as an AV receiver You can control the power on-and-off operation of a connected component, such as a Yamaha CD player or power amplifier, in sync with this unit. Use a system cable to connect the unit’s TRIGGER OUT jack to the connected component’s TRIGGER IN jack.
Remote connections Operating the unit from another room Remote connection between Yamaha components If you connect an infrared receiver and transmitter to the unit’s REMOTE IN/OUT jacks, you will be able to operate the unit and/or external component from another room, using the supplied remote control. If you have another Yamaha component that supports remote connections, as this unit does, an infrared transmitter is not necessary.
Connecting the power cord After all connections are complete, make sure that the STANDBY/ON/OFF (Power) switch is turned off, then plug the power cord into the AC IN connector of the unit, and then plug the power cord into the AC outlet. Supplied power cord C-5000 Rear panel CAUTION • Do not use an AC outlet that is so loose that the plug does not stay firmly in place. Otherwise, fire, electric shock, or burning might be caused.
Operations This section explains basic operating procedures. You can follow these procedures to take advantage of the unit’s functions. These procedures are intended only as examples.
Turning the power on CAUTION Be sure to lower the volume level to minimum before turning the power on. Selecting the input and output Select a pair of output jacks using the OUTPUT selector. Turn the power on by setting the STANDBY/ON/OFF (Power) switch on the front panel to STANDBY/ON. All jacks Off Only BAL jacks Only LINE 1 jacks Only LINE 2 jacks Select the audio source using the INPUT selector. If the unit is in standby mode, you can also turn the power on using the remote control.
Adjusting the turntable input setting Selecting the input from the EXT.IN jacks PHONO selector Set the PHONO selector according to the turntable cartridge. Options for turntable cartridge Press the EXT. DIRECT switch. The EXT. DIRECT indicator will light up. The INPUT selector setting will be disabled, and the audio source input from the EXT. IN jacks will be output at a pair of the output jacks. The source signal input at the balanced input jacks will be output at the balanced BAL output jacks.
Adjusting the volume level Subsonic filter Turn on the SUBSONIC FILTER switch to apply the subsonic filter, as needed. A resonating turntable tone arm or a warped vinyl record could cause a very low frequency rumble (subsonic noise) that might apply load and damage to the speakers. A subsonic filter will cut such noise to protect the speakers. Set the gain using the GAIN selector so that you can make fine volume adjustments. Gain Adjust the volume level using the VOLUME control.
Adjusting the tone Lowering the volume level momentarily Adjust the volume level balance between the left and right speakers using the BALANCE control. Press the AUDIO MUTE switch to reduce the current volume level by approximately 20 dB. Press the switch again to restore the previous volume level. Adjust the volume level of the high and low ranges using the BASS and TREBLE control. Note • If both BASS and TREBLE controls are set to the center, the audio signal will bypass the tone control circuit.
Connecting headphones If headphones are connected to the PHONES jack, no signal will be output at the output jacks (BAL, LINE 1, and LINE 2 output jacks) on the rear panel. Use the TRIM selector to switch the headphone amp gain so you can adjust the level balance between the audio output from the PHONES jack and the speakers to avoid sudden changes in volume. Note If EXT. DIRECT is selected, no signal will be output from the PHONES jack.
Reference Materials 33
General specifications Rated output voltage/output impedance (Input 200 mV, 20 Hz to 20 kHz, THD 0.01%) BAL (BYPASS). . . . . . . . . . . . . . . . . . . 2 Vrms/150Ω BAL (ATT. −6dB). . . . . . . . . . . . . . . . . 1 Vrms/150Ω LINE 1/LINE 2. . . . . . . . . . . . . . . . . . . 1 Vrms/150Ω LINE 2 OUT (recording). . . . . . . 200 mVrms/1.2 kΩ Total harmonic distortion plus noise (JEITA, input 0.5 V, 20 Hz to 20 kHz) BAL 1/BAL 2/TUNER/CD/LINE 1/LINE 2 IN → BAL/LINE 1/LINE 2 . . . . . . . . . . . . . . . . .
Headphone jack rated output power (1 kHz, 32Ω, 0.2% THD) . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 mW + 35 mW RIAA equalization deviation MC/MM . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±0.5 dB Subsonic filter characteristics MC/MM . . . . . . . . . . . . . . . . . . . . . . . . . 15 Hz/−3 dB Power supply [Models for U.S.A. and Canada]. . . AC 120 V, 60 Hz [Model for China]. . . . . . . . . . . . . . AC 220 V, 50 Hz [Model for Korea]. . . . . . . . . . . . . .
EXT. IN LINE 2 OUT (recording) TUNER /CD LINE 1/ LINE 2 PHONO PHONO BAL 2 BAL 1 INPUT SUB TRANSFORMER POWER RELAY Relay BAL→UNBAL ±32V ±81V INDEPENDENT CONSTANT BASS MIDDLE TREBLE VOLUME TONE CONTROL +99V +12V CURRENT POWER SUPPLY TOROIDAL TRANSFORMER SUBSONIC ON / THROUGH TONE CONTROL ON / THROUGH INDEPENDENT REGULATED POWER SUPPLY (for AUDIO) MOTOR VOL/ RELAY BAL Normal / UNBAL: 18.6dB BAL ATT: 12.
Audio characteristics Frequency response (tone control) 14 Response (dB) 12 10 +10dB 8 +8dB 6 +6dB 4 +4dB 2 +2dB 0 ±0dB –2dB –2 –4dB –4 –6dB –6 –8dB –8 –10dB –10 –12 –14 10 20 30 50 100 200 300 500 1k 2k 3k 5k 10k 20k 30k 50k 100k Frequency (Hz) Total harmonic distortion (PHONO) 10 5 2 1 0.5 THD + N Ratio (%) 0.2 0.1 20 Hz 0.05 1 kHz 20 kHz 0.02 0.01 0.005 0.002 0.001 0.0005 0.0002 0.
Frequency response (subsonic filter) 10 5 THROUGH Response (dB) 0 –5 ON –10 –15 –20 –25 5 10 20 30 50 100 200 300 500 1k 2k 3k 5k 10k 20k 30k 50k 100k Frequency (Hz) Volume curve 10 0 GAIN selector: –6 dB –20 Volume Level (dB) GAIN selector: 0 dB –40 GAIN selector: –12 dB –60 –80 –100 –110 0.00 50.00 100.00 150.00 Volume control (degree) 38 200.00 250.00 300.
Troubleshooting Refer to the table below if this unit does not function properly. If the instructions below do not help, or if the problem you are experiencing is not listed below, turn off the unit, disconnect the power cord, and contact the nearest authorized Yamaha dealer or service center. Problem Cause Remedy See page The power cord is not connected to the AC IN connector on the rear panel or is not plugged into an AC outlet. Connect the power cord firmly.
Remedy See page Incorrect input or output cable connections. Connect the cables properly. If the problem persists, the cables might be defective. 20 The turntable is not grounded to the GND terminal. Connect the turntable to the GND terminal of this unit. 22 Both balanced and line cables are being used simultaneously between two components. Do not use both balanced and line cables simultaneously between two components. Doing so would create a ground loop that could generate static and noise.
Index A O AC IN jack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Adjusting the turntable input . . . . . . . . . . . . . . . . . ATTENUATOR selector . . . . . . . . . . . . . . . . . . . . . AUDIO MUTE switch . . . . . . . . . . . . . . . . . . . . . . AUTO POWER STANDBY switch . . . . . . . . . . . . 26 29 30 31 13 BAL 1 jack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BAL 2 jack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . BALANCE control . .
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