Yamaha Stereo Amplifier AX 1070 User Manual

AX-1070/870  
Natural Sound Stereo Integrated Amplifier  
145W + 145W (8) RMS Output Power, 0.01% THD, 20–20,000 Hz <AX-1070>  
110W + 110W (8) RMS Output Power, 0.015% THD, 20–20,000 Hz <AX-870>  
Increased Low Impedance Drive Capability  
Continuously Variable Loudness Control  
PURE DIRECT Switch to Reproduce the Purest Source Sound  
SUBSONIC FILTER Switch to Cut Out Undesirable  
Ultra-Low-Frequency Signals  
PRE OUT/MAIN IN Terminals Useful for Connecting An Equalizer,  
Sound Processor, etc.  
Turnover Frequency Switch for Tone Controls <For AX-1070 only>  
High Quality Components Parts  
Remote Control Capability  
Thank you for selecting this YAMAHA stereo integrated amplifier.  
CAUTION  
RISK OF ELECTRIC SHOCK  
DO NOT OPEN  
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.  
OWNER’S MANUAL  
IMPORTANT!  
Please record the serial number of this  
CONTENTS  
unit in the space below.  
Explanation of Graphical Symbols  
Model:  
Serial No.:  
Safety Instructions ................... 2  
Supplied Accessories .............. 3  
Connections ............................. 4  
Operations ............................... 6  
Remote Control Transmitter ... 10  
Notes about the Remote  
Control Transmitter ................. 11  
Troubleshooting ...................... 12  
Specifications ......................... 13  
The lightning flash with arrowhead  
symbol, within an equilateral triangle,  
is intended to alert you to the  
presence of uninsulated “dangerous  
voltage” within the product’s  
enclosure that may be of sufficient  
magnitude to constitute a risk of  
electric shock to persons.  
The serial number is located on the rear  
of the unit.  
Retain this Owner’s Manual in a safe  
place for future reference.  
The exclamation point within an  
equilateral triangle is intended to alert  
you to the presence of important  
operating and maintenance  
(servicing) instructions in the  
literature accompanying the  
appliance.  
WARNING  
TO REDUCE THE RISK OF FIRE OR  
ELECTRIC SHOCK, DO NOT EXPOSE  
THIS UNIT TO RAIN OR MOISTURE.  
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FCC INFORMATION  
1. IMPORTANT NOTICE : DO NOT MODIFY THIS UNIT!  
Compliance with FCC regulations does not guarantee that  
interference will not occur in all installations. If this product  
is found to be the source of interference, which can be  
determined by turning the unit “OFF” and “ON”, please try  
to eliminate the problem by using one of the following  
measures:  
This product, when installed as indicated in the  
instructions contained in this manual, meets FCC  
requirements. Modifications not expressly approved by  
Yamaha may void your authority, granted by the FCC, to  
use the product.  
2. IMPORTANT : When connecting this product to  
accessories and/or another product use only high quality  
shielded cables. Cable/s supplied with this product  
MUST be used. Follow all installation instructions.  
Failure to follow instructions could void your FCC  
authorization to use this product in the USA.  
3. NOTE : This product has been tested and found to  
comply with the requirements listed in FCC Regulations,  
Part 15 for Class “B” digital devices. Compliance with  
these requirements provides a reasonable level of  
assurance that your use of this product in a residential  
environment will not result in harmful interference with  
other electronic devices.  
Relocate either this product or the device that is being  
affected by the interference.  
Utilize power outlets that are on different branch (circuit  
breaker or fuse) circuits or install AC line filter/s.  
In the case of radio or TV interference, relocate/reorient the  
antenna. If the antenna lead-in is 300 ohm ribbon lead,  
change the lead-in to coaxial type cable.  
If these corrective measures do not produce satisfactory  
results, please contact the local retailer authorized to  
distribute this type of product. If you can not locate the  
appropriate retailer, please contact Yamaha Electronics  
Corp., U.S.A. 6660 Orangethorpe Ave, Buena Park, CA  
90620.  
This equipment generates/uses radio frequencies and, if  
not installed and used according to the instructions  
found in the users manual, may cause interference  
harmful to the operation of other electronic devices.  
The above statements apply ONLY to those products  
distributed by Yamaha Corporation of America or its  
subsidiaries.  
We Want You Listening For A Lifetime  
YAMAHA and the Electronic Industries Association’s  
Consumer Electronics Group want you to get the most out of  
your equipment by playing it at a safe level. One that lets the  
sound come through loud and clear without annoying blaring or  
distortion – and, most importantly, without  
affecting your sensitive hearing. Since hearing  
damage from loud sounds is often undetectable  
until it is too late, YAMAHA and the Electronic  
Industries Association’s Consumer Electronics  
Group recommend you to avoid prolonged  
exposure from excessive volume levels.  
SUPPLIED ACCESSORIES  
After unpacking, check that the following parts are contained.  
Remote Control Transmitter  
Batteries (size AA, R6, UM-3)  
3
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CONNECTIONS  
Before attempting to make any connections to or from this unit, be sure to first switch OFF the power to this unit and to any other  
components to which connections are being made.  
When making connections between this unit and other components, be sure all connections are made correctly, that is to say L  
(left) to L, R (right) to R, “+” to “+” and “–” to “–”. Also, refer to the owner’s manual for each component to be connected to this  
unit.  
<AX-1070>  
Compact disc player  
Tuner  
Tape deck 1  
Tape deck 2  
Speakers A  
Left  
Right  
(General model)  
To AC outlet  
Left  
Right  
Speakers B  
Turntable  
Video cassette  
player, LD player,  
etc.  
Tape deck 3  
*
: Refer to “ABOUT THE ACCESSORY TERMINALS” on page 6.  
4
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<AX-870>  
Tuner  
Compact disc player  
Tape deck 1  
Tape deck 2  
Speakers A  
Left  
Right  
(General model)  
To AC outlet  
Left  
Right  
Speakers B  
Turntable  
Video cassette  
player, LD player,  
etc.  
*
: Refer to “ABOUT THE ACCESSORY TERMINALS” on page 6.  
5
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CONNECTING SPEAKERS  
Connect the SPEAKERS terminals to your speakers with wire  
of the proper gauge, cut as short as possible. If the  
One or two speaker systems can be connected to this unit.  
If you connect only one speaker system, connect it to either  
the SPEAKERS A or B terminals.  
Use speakers with the specified impedance shown on the  
rear of this unit.  
Banana Plug connections are also possible (except for  
Scandinavian models). Simply insert the Banana Plug  
connector into the corresponding terminal.  
connections are faulty, no sound will be heard from the  
speakers. Make sure that the polarity of the speaker wires is  
correct, that is, + and – markings are observed. If these wires  
are reversed, the sound will be unnatural and will lack bass.  
Do not let the bare speaker wires touch each other and do  
not let them touch the metal parts of this unit as this could  
damage this unit and/or speakers.  
How to Connect:  
Red: positive (+)  
Black: negative (–)  
Unscrew the knob.  
Insert the bare wire.  
[Remove approx. 5mm  
(1/4”) insulation from  
the speaker wires.]  
Tighten the knob and  
secure the wire.  
ABOUT THE ACCESSORY TERMINALS  
AC OUTLETS (SWITCHED)  
PRE OUT/MAIN IN terminals  
(Europe and General models) ............3 SWITCHED OUTLETS  
(Australia and U.K. models)..................1 SWITCHED OUTLET  
Removing the jumper pins enables this unit to independently  
perform the functions of a control amplifier and a power  
amplifier. These terminals are for connection of a signal-  
processing system such as a graphic equalizer or sound  
processor.  
Use these to connect the power cords from your components  
to this unit.  
The power to the SWITCHED outlets is controlled by this unit’s  
POWER switch or the provided remote control transmitter’s  
POWER key. These outlets will supply power to any  
component whenever this unit is turned on.  
The maximum power (total power consumption of  
components) that can be connected to the SWITCHED AC  
OUTLETS is 200 watts.  
If a sound processor or other component is connected, the  
VOLUME control of this unit can be used for overall  
adjustment of the level of sound. To connect such a unit,  
remove the jumper pins from the PRE OUT/MAIN IN terminals,  
connect the inputs of that unit to the PRE OUT terminals and  
its outputs to the MAIN IN terminals. For details, refer to the  
owner’s manual included with the unit to be connected.  
REMOTE CONTROL (PHONO) connector  
If you have a YAMAHA turntable with a terminal for remote  
control, connect it to this connector by using the cable provided  
with the turntable. This connection allows you to control the  
turntable from the provided remote control transmitter.  
GND terminal (For turntable use)  
Connecting the ground wire of the turntable to this terminal will  
normally minimize hum, but in some cases better results may  
be obtained with the ground wire disconnected.  
6
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OPERATIONS  
3 1,6  
Illustration: AX-1070  
Parts in shaded area (  
are not present on AX-870.  
)
2
PHONES  
PHONO  
4
7
TO PLAY A SOURCE  
Select the speakers to be used.  
1
4
SPEAKERS  
Set to the “ ” position.  
If you use two speaker systems, press both the A and B  
switches.  
*
2
3
POWER  
Play the source.  
5
6
Select a desired input source.  
<AX-1070>  
<AX-870>  
3
Adjust to the desired output level.  
If desired, adjust the BASS, TREBLE, BALANCE and  
LOUDNESS controls, etc. (Refer to page 10–11.)  
7
If you select turntable as an input source (PHONO  
position), refer to “Setting the PHONO switch” on page 11.  
*
7
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Illustration: AX-1070  
Parts in shaded area (  
are not present on AX-870.  
)
3,5 3  
1
TO RECORD A SOURCE TO TAPE (OR DUB FROM A TAPE TO ANOTHER)  
Select the source to be recorded.  
1
4
5
Set the tape deck in the recording mode.  
<AX-1070>  
<AX-870>  
To monitor the sound being recorded, select the tape  
deck being used for recording with the INPUT selector.  
REC OUT  
REC OUT  
CD  
CD  
TUNER  
1
2
/3  
TUNER  
1
2
TAPE COPY  
TAPE COPY  
PHONO  
PHONO  
3
1/  
2
2
1
<AX-1070>  
<AX-870>  
AUX  
AUX  
2
3
Play the source.  
3
Confirm the source by selecting it with the INPUT  
selector and turning up the VOLUME control.  
Notes  
If you want to enjoy another source while recording, select it  
with the INPUT selector.  
<AX-1070>  
<AX-870>  
VOLUME, BASS, TREBLE, BALANCE, LOUDNESS  
controls and PURE DIRECT switch settings have no effect  
on the material being recorded.  
3
8
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REC OUT selector setting on tape dubbing  
<AX-1070>  
<AX-870>  
To dub from tape deck 1 to  
tape deck 2 or 3 (or both  
To dub from tape deck 1 to  
tape deck 2  
REC OUT  
REC OUT  
CD  
CD  
tape deck 2 and 3 at the  
same time)  
TUNER  
1
2
TUNER  
1
2
/3  
TAPE COPY  
TAPE COPY  
PHONO  
PHONO  
2
1
3
1
/
2
AUX  
AUX  
To dub from tape deck 3 to  
tape deck 1 or 2 (or both  
tape deck 1 and 2 at the  
same time)  
To dub from tape deck 2 to  
tape deck 1  
REC OUT  
REC OUT  
CD  
CD  
TUNER  
TUNER  
1
2/3  
1
2
TAPE COPY  
TAPE COPY  
PHONO  
PHONO  
3
1
/
2
2
1
AUX  
AUX  
* Tape dubbing cannot be done from tape deck 2 to tape deck  
1 or 3.  
OPEN/CLOSE THE CONTROL DOOR  
When it is not necessary to operate controls inside the control door, close the door.  
To close the door  
To open the door  
9
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Adjusting the BALANCE control  
Selecting the SPEAKER system  
Adjust the balance of the output volume to the left and right  
speakers to compensate for sound imbalance caused from  
speaker location or listening room conditions.  
Because one or two speaker systems can be connected to this  
unit, the SPEAKERS switches allow you to select speaker  
system A or B, or both at once.  
BALANCE  
0
SPEAKERS  
l
l
2
2
3
3
4
4
R
L 5  
5
Adjusting the BASS and TREBLE  
controls  
Adjusting the continuously variable  
LOUDNESS control  
BASS  
: Turn this clockwise to increase (or counter-  
clockwise to decrease) the low frequency  
response.  
This control provides compensation for the human ears’ loss of  
sensitivity to high and low-frequency ranges at low volume.  
This control is adjustable to retain full tonal range at any  
volume level.  
TREBLE : Turn this clockwise to increase (or counter-  
clockwise to decrease) the high frequency  
response.  
1
LOUDNESS  
0
Set to the “FLAT” position.  
9
8
BASS  
TREBLE  
7
6
DEFEAT  
DEFEAT  
l
l
l
l
2
2
2
2
3
3
3
3
4
4
4
4
2
5
5
5
5
TURNOVER FREQUENCY switch <For AX-1070 only>  
These switches can be used to adjust the turnover point of the  
tone controls: either 200 Hz or 400 Hz for BASS and either 2.5  
kHz or 5 kHz for TREBLE. This gives you flexible control over  
bass and treble response characteristics.  
Set to the loudest listening level that  
you would listen to.  
TURNOVER FREQUENCY  
3
LOUDNESS  
400Hz  
200Hz  
2.5kHz  
5kHz  
0
Turn so that the desired volume can  
9
8
be achieved.  
7
6
10  
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Setting the PHONO switch  
Using the PURE DIRECT switch  
Select either MM or MC position depending on your PHONO  
cartridge, Moving Magnet or Moving Coil type. However, if you  
use a high output MC cartridge, select MM position.  
You can enjoy the purest possible sound from your audio  
sources by setting this switch so that the indicator illuminates.  
By doing so, the audio signal bypasses the BASS, TREBLE,  
BALANCE and LOUDNESS controls, the SUBSONIC FILTER  
switch and the PRE OUT/MAIN IN terminals, eliminating any  
alterations to the audio signal.  
PHONO  
MC  
MM  
PURE  
DIRECT  
Setting the SUBSONIC FILTER switch  
Setting the MODE switch  
For AX-1070 only  
<
>
If you set this switch to “ON” position, undesirable ultra-low-  
frequency signals caused by turntable rumble or warped  
records can be cut out without losing sound quality.  
This switch can be used for switching between stereo and  
monaural operation. Normally this switch should be set to the  
STEREO position.  
SUBSONIC  
FILTER  
MODE  
ON  
MONO  
OFF  
STEREO  
When you listen with headphones  
Connect the headphones to the PHONES jack. When listening  
with headphones privately, set both the SPEAKERS A and B  
switches to the OFF position.  
PHONES  
11  
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REMOTE CONTROL TRANSMITTER  
The remote control transmitter provided with this unit is designed to control all the most commonly used functions of the unit. If the  
CD player, tuner, turntable, equalizer, and tape deck connected to this unit are YAMAHA components, then this remote control  
transmitter will also control various functions of each component.  
KEY FUNCTIONS  
For Control of This Unit  
Turns the power on/off.  
Selects input source.  
When pressed, mutes the volume  
level. To resume original volume  
level, press this again.  
While muting, the indicator on the  
VOLUME control flashes on and off  
continuously.  
Turns the volume level up/down.  
For Other Component Control  
Identify the remote control transmitter keys with your component’s keys. If these keys are identical, their function will be the  
same. On each key function, refer to the corresponding instruction on your component’s manual.  
Starts/stops record play on turntable.  
Controls tuner  
+: Selects higher preset station  
number.  
: Selects lower preset station  
number.  
A/B/C/D/E: Selects the page (A – E)  
Controls compact disc player.  
of preset station buttons.  
*
DISC SKIP is applicable only to  
compact disc changer.  
Controls tape deck.  
DIR A, B and DECK A/B are  
applicable only to double cassette  
tape deck.  
*
Controls equalizer.  
For a single cassette deck with  
*
*
PRESET selects any preset  
automatic reverse function,  
pressing DIR A will reverse the  
direction of tape running.  
equalizer curve whenever this is  
pressed. (After the last preset curve  
is selected, it returns to the first one  
by another press on this key.)  
Illustration: AX-1070  
Parts in shaded area (  
) are not present on AX-870.  
12  
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STANDBY mode (For Europe model only)  
While the power is on, pressing the POWER key on the remote  
control transmitter switches the unit to the STANDBY mode.  
(In this mode, the indicator is half illuminated.)  
Note  
To turn the power off completely, disconnect the AC  
power plug from the wall outlet.  
POWER on mode  
STANDBY mode  
NOTES ABOUT THE REMOTE CONTROL TRANSMITTER  
Battery installation  
Remote control transmitter operation range  
1
3
2
Remote control  
sensor  
Within approximately  
7 m (23 feet)  
Battery replacement  
If you find that the remote control transmitter must be used  
closer to the main unit, the batteries are weak. Replace both  
batteries with new ones.  
Notes  
Use only AA, R6, UM-3 batteries for replacement.  
Be sure the polarities are correct. (See the illustration inside  
the battery compartment.)  
Remove the batteries if the remote control transmitter will  
Notes  
not be used for an extended period of time.  
There should be no large obstacles between the remote  
control transmitter and the main unit.  
If the remote control sensor is directly illuminated by strong  
lighting (especially an inverter type of fluorescent lamp etc.),  
it might cause the remote control transmitter not to work  
correctly. In this case, reposition the main unit to avoid  
direct lighting.  
If batteries leak, dispose of them immediately. Avoid  
touching the leaked material or letting it come in contact with  
clothing, etc. Clean the battery compartment thoroughly  
before installing new batteries.  
13  
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TROUBLESHOOTING  
If the unit fails to operate normally, check the following points to determine whether the fault can be corrected by the simple  
measures suggested. If it cannot be corrected, or if the fault is not listed in the SYMPTOM column, disconnect the power cord and  
contact your authorized YAMAHA dealer or service center for help.  
SYMPTOM  
CAUSE  
REMEDY  
The unit fails to turn on when the POWER  
switch is pressed.  
Power cord is not plugged in or is not  
completely inserted.  
Firmly plug in the power cord.  
No sound.  
Incorrect output cord connections.  
Appropriate input source is not selected.  
Speaker connections are not secure.  
Connect the cords properly. If the problem  
persists, the cords may be defective.  
Select an appropriate input source with the  
INPUT selector.  
Secure the connections.  
The sound suddenly goes off.  
The protection circuit has activated because  
of short circuit etc.  
Turning the unit off and then on will reset the  
protection circuit.  
Only one side speaker outputs the sound.  
Incorrect setting of the BALANCE control.  
Incorrect cord connections.  
Adjust it to the appropriate position.  
Connect the cords properly. If the problem  
persists, the cords may be defective.  
There is a lack of bass, and no ambience.  
Sound “hums”.  
The + and – wires are connected in reverse  
at the amplifier or speakers.  
Connect the speaker wires in the correct  
phase (+ and –).  
Incorrect cord connections.  
Firmly connect the audio plugs. If the  
problem persists, the cords may be defective.  
No connection from the turntable to the GND  
terminal.  
Make the GND connection between the  
turntable and this unit.  
Sound level is low.  
The LOUDNESS control is functioning.  
Set the LOUDNESS control to the FLAT  
position.  
The MUTING switch is ON.  
First, turn the volume control to the full left.  
Then, turn the MUTING switch OFF with the  
remote control transmitter and adjust the  
volume.  
Using the BASS, TREBLE, BALANCE,  
LOUDNESS controls and SUBSONIC  
FILTER switch does not affect the tone.  
The PURE DIRECT switch is ON.  
The PURE DIRECT switch must be switched  
OFF to use those controls.  
The remote control transmitter does not  
work.  
Direct sunlight or lighting (of an inverter type  
of flourescent lamp etc.) is striking the  
remote control sensor of the main unit.  
Change position of the main unit.  
The distance or range within which the  
remote control transmitter can be used  
decreases.  
The batteries of this remote control  
transmitter are too weak.  
Replace the batteries with new ones.  
14  
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SPECIFICATIONS  
Minimum RMS Output Power per Channel  
<AX-1070>  
8 ohms, 20 Hz to 20 kHz, 0.01% THD  
...............................................145W+145W  
6 ohms, 20 Hz to 20 kHz, 0.02% THD  
...............................................185W+185W  
<AX-870>  
8 ohms, 20 Hz to 20 kHz, 0.015% THD  
...............................................110W+110W  
6 ohms, 20 Hz to 20 kHz, 0.03% THD  
...............................................130W+130W  
Output Level/Impedance  
<AX-1070>  
Channel Separation (Vol. –30 dB)  
PHONO MM/MC (Input Shorted  
REC OUT ....................150 mV/2.2 k-ohms  
PRE OUT..........................1.0V/1.8 k-ohms  
<AX-870>  
1 kHz/10 kHz) .........................70 dB/55 dB  
CD/TUNER/TAPE/AUX (Input 5.1 k-ohms  
Terminated 1 kHz/10 kHz) ......65 dB/50 dB  
REC OUT ....................150 mV/2.2 k-ohms  
PRE OUT..........................1.0V/1.6 k-ohms  
Tone Control Characteristics  
BASS:  
Maximum Voltage Output  
<AX-1070>  
Boost/cut ............................±10 dB (20 Hz)  
Turnover Frequency  
<AX-1070>...........................200, 400 Hz  
<AX-870>.....................................350 Hz  
TREBLE:  
Boost/cut...........................±10 dB (20 kHz)  
Turnover Frequency  
<AX-1070>..............................2.5, 5 kHz  
<AX-870>....................................3.5 kHz  
20 Hz to 20 kHz, 0.02% THD ..............6.5V  
<AX-870>  
Dynamic Power per Channel  
(by IHF Dynamic Headroom measuring  
method)  
20 Hz to 20 kHz, 0.01% THD ..............1.4V  
Headphone Jack Rated Output/ Impedance  
Output Level (8 ohms, 1 kHz, 0.015% THD)  
<AX-1070>..........................................1.05V  
<AX-870>..............................................0.5V  
Impedance  
<AX-1070>  
8/6/4/2 ohms.................220/290/360/460W  
<AX-870>  
8/6/4/2 ohms.................150/200/250/330W  
Filter Characteristics  
<AX-1070>...................................220 ohms  
<AX-870>.....................................470 ohms  
SUBSONIC FILTER .........15 Hz, –18 dB/oct  
DIN Standard Output Power per Channel  
[Europe model only]  
<AX-1070>  
(4 ohms, 1 kHz, 0.7% THD) ..............250W  
<AX-870>  
(4 ohms, 1 kHz, 0.7% THD) ..............185W  
Continuous Loudness Control  
(Level related equalization)  
Attenuation  
Frequency Response (20 Hz to 20 kHz)  
CD/TUNER/TAPE/AUX....................0±0.5 dB  
MAIN IN...........................................0±0.5 dB  
<AX-1070> ........................–40 dB (1 kHz)  
<AX-870> ..........................–30 dB (1 kHz)  
RIAA Equalization Deviation (20 Hz to 20 kHz)  
PHONO MM......................................±0.3 dB  
PHONO MC......................................±0.5 dB  
Dynamic Headroom [General model only]  
<AX-1070>  
Audio Muting <AX-1070 only>.............–20 dB  
Gain Tracking Error (0 to –60 dB) ............2 dB  
8/6 ohms ...........................1.81 dB/1.95 dB  
<AX-870>  
Total Harmonic Distortion (20 Hz to 20 kHz)  
<AX-1070>  
8/6 ohms ...........................1.35 dB/0.97 dB  
Power Supply  
PHONO MM to REC OUT (3V) ......0.003%  
PHONO MC to REC OUT (3V).......0.007%  
CD/TUNER/TAPE/AUX to PRE OUT (1V)  
........................................................0.004%  
CD/TUNER/TAPE/AUX to SP OUT  
(72.5W/8 ohms)..............................0.007%  
MAIN IN to SP OUT  
[Australia and U.K. models]  
IEC Power (8 ohms, 1 kHz, 0.01% THD)  
[Europe model only]  
..........................................AC 240V, 50 Hz  
[Europe model]..................AC 230V, 50 Hz  
[General model]  
<AX-1070>.......................................170W  
<AX-870>.........................................125W  
................AC 110/120/220/240V, 50/60 Hz  
Power Band Width  
Power Consumption  
<AX-1070>  
(72.5W/8 ohms)..............................0.005%  
<AX-870>  
<AX-1070>..........................................370W  
<AX-870>............................................270W  
8 ohms, 72.5W, 0.03% THD  
..........................................10 Hz to 50 kHz  
<AX-870>  
PHONO MM to REC OUT (3V) ......0.003%  
PHONO MC to REC OUT (3V).......0.007%  
CD/TUNER/TAPE/AUX to PRE OUT (1V)  
........................................................0.005%  
CD/TUNER/TAPE/AUX to SP OUT  
(55W/8 ohms).................................0.008%  
MAIN IN to SP OUT  
AC Outlets  
[Europe and General models]  
3 SWITCHED OUTLETS  
..........................................200W max. total  
[Australia and U.K. models]  
1 SWITCHED OUTLET  
8 ohms, 55W, 0.03% THD  
..........................................10 Hz to 50 kHz  
Damping Factor  
8 ohms, 20 Hz–20 kHz  
<AX-1070>................................350 or more  
<AX-870>..................................320 or more  
(55W/8 ohms).................................0.006%  
..........................................200W max. total  
Signal-to-Noise Ratio (IHF-A Network)  
PHONO MM (5 mV Input Shorted)  
............................................................ 92 dB  
PHONO MC (500 µV Input Shorted)  
............................................................ 75 dB  
CD/TUNER/TAPE/AUX (Input Shorted)  
(PURE DIRECT; ON) ..................... 110 dB  
Dimensions (W x H x D)  
......................................435 x 171 x 448 mm  
(17-1/8” x 6-3/4” x 17-5/8”)  
Input Sensitivity/Impedance  
PHONO MM.....................2.5 mV/47 k-ohms  
PHONO MC ......................160 µV/220 ohms  
CD/TUNER/TAPE/AUX  
........................................150 mV/47 k-ohms  
MAIN IN  
<AX-1070>..........................1.0V/47 k-ohms  
<AX-870>............................0.9V/47 k-ohms  
Weight  
<AX-1070> ................18.3 kg (40 lbs. 4 oz.)  
<AX-870> ................14.0 kg (30 lbs. 13 oz.)  
Residual Noise (IHF-A Network)  
(PURE DIRECT; ON)  
Accessories...........Remote control transmitter  
Batteries  
Maximum Input Signal (1 kHz, 0.01% THD)  
<AX-1070>  
<AX-1070>..........................................35 µV  
<AX-870>............................................80 µV  
PHONO MM......................................170 mV  
PHONO MC.....................................13.5 mV  
<AX-870>  
Specifications subject to change without  
notice.  
PHONO MM......................................160 mV  
PHONO MC.....................................12.5 mV  
15  
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YAMAHA ELECTRONICS CORPORATION, USA 6660 ORANGETHORPE AVE., BUENA PARK, CALIF. 90620, U.S.A.  
YAMAHA CANADA MUSIC LTD. 135 MILNER AVE., SCARBOROUGH, ONTARIO M1S 3R1, CANADA  
YAMAHA ELECTRONIK EUROPA G.m.b.H. SIEMENSSTR. 22-34, D-25462 RELLINGEN BEI HAMBURG, F.R. OF GERMANY  
YAMAHA ELECTRONIQUE FRANCE S.A. RUE AMBROISE CROIZAT BP70 CROISSY-BEAUBOURG 77312 MARNE-LA-VALLEE CEDEX02, FRANCE  
YAMAHA ELECTRONICS (UK) LTD. YAMAHA HOUSE, 200 RICKMANSWORTH ROAD WATFORD, HERTS WD1 7JS, ENGLAND  
YAMAHA SCANDINAVIA A.B.  
YAMAHA MUSIC AUSTRALIA PTY, LTD. 17-33 MARKET ST., SOUTH MELBOURNE, 3205 VIC., AUSTRALIA  
J
A
WETTERGRENS GATA 1, BOX 30053, 400 43 VÄSTRA FRÖLUNDA, SWEDEN  
0000000  
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