SPECIFICATIONS

As a part of policy of continuous improvement, YAMAHA reserves the right to make design and specification changes for product improvement without prior notice. The performance specification figures indicated are nominal values of production units.

Receiver (RX-S70)
Minimum RMS Output Power per Channel

 

6 ohms, 20 Hz to 20 kHz, 0.04% THD ..........................

50W+50W
6 ohms, 1 kHz, 10% THD

 

[U.S.A., Canada and General models only] .............

75W+75W
DIN Standard Output Power per Channel [Europe model only]

4/6 ohms, 1 kHz, 1% THD ..................................................

 

65/60W
IEC Power [Europe model only]

 

 

 

6 ohms, 1 kHz, 0.1% THD .......................................................

 

60W
Input Sensitivity/Impedance

 

 

 

PHONO MM .......................................................

2.5 mV/47 k-ohms

AUX ..................................................................

150 mV/25 k-ohms

Headphone Output Impedance..........................................

 

68 ohms

Total Harmonic Distortion (20 Hz to 20 kHz)

 

 

AUX to SP OUT (25W/6 ohms) ............................................

 

0.04%
Signal-to-Noise Ratio (IHF-A Network)

 

 

AUX (Input Shorted) ...........................................................

 

102 dB
Tone Control Characteristics

 

 

 

BASS: Boost/cut ...................................................

 

±10 dB (50 Hz)

TREBLE: Boost/cut .............................................

 

±10 dB (20 kHz)

Tuning Range

 

 

 

FM

 

 

 

[U.S.A. and Canada models]......................

87.5 to 107.9 MHz
[Australia, U.K., Europe and General models]

AM......................................................................(MW)

87.5 to 108.0 MHz

 

 

 

[U.S.A., Canada and General models] .......

530 – 1,710 kHz

[Australia, U.K. and Europe models] .........

531 – 1,611 kHz

LW

 

 

 

[U.K. and Europe models only] .....................

153 – 288 kHz
Usable Sensitivity

 

 

 

FM (75 ohms)

 

 

 

(30 dB S/N Quieting, 1 kHz, 100% mod.)

 

 

[Except Europe model]................................

1.2 V (12.8 dBf)

(DIN, Mono, S/N 26 dB) [Europe model] ........................

1.5 V

AM (MW)........................................................................

 

280 µV/m

LW .................................................................................

 

560 µV/m
Power Supply

 

 

 

[U.S.A. and Canada models] ............................

 

AC 120V, 60 Hz

[Australia and U.K. models] .............................

 

AC 240V, 50 Hz

[Europe model] .................................................

 

AC 230V, 50 Hz

[General model] ......................

AC 110/120/220/240V, 60/50 Hz

Power consumption

 

 

 

[U.S.A. and Canada models] ............................................

 

140W

[Australia, U.K., Europe and General models]

............... 150W

Dimensions (W x H x D).............................

280 x 107.5 x 339.5 mm

Weight ..............................................................

(11” x 4-1/4” x 13-3/8”)

 

6.0 kg (13 lbs. 3 oz.)

Tape Deck (KXW-S70)

Power Source

...................................

AC supplies from receiver unit

Type ...............

Auto Reverse 4-Track 2-Channel playback/recording

Heads ................................................

and playback stereo double Cassette Deck

 

PB, REC/PB : Hard Permalloy

Motors ................................................................

Erase : Double Gap Ferrite

 

DC servo motor x 2

Wow and Flutter .................................................

50.19%, W.PEAK
Fast Winding Time (C-60 Tape)0.09%, W.RMS
About 120 seconds
Frequency Response (–20 dB)30 – 15,000 Hz 53 dB (Normal)

........................................................

 

 

30 – 16,000 Hz 53 dB (CrO2)
Signal-to-Noise Ratio30 – 18,000 Hz 53 dB (Metal)
58 dB (Dolby NR OFF)

 

 

66 dB (Dolby B NR ON)
Harmonic Distortion74 dB (Dolby C NR ON)
No more than 1.2%
Channel Separation (Input Shorted 1 kHz)

Crosstalk.................................................................................(Input Shorted 125 Hz)

More than 40 dB
More than 55 dB

Dimensions (W x H x D)................................

280 x 117.5 x 326 mm

Weight ................................................................

(11” x 4-5/8” x 12-13/16”)

 

4.2 kg (9 lbs. 4 oz.)
Tape Deck (KX-S90)

Power Source ...................................

AC supplies from receiver unit

Type ..............................

Auto Reverse 4-Track 2-Channel recording

Heads .......................................................

and playback stereo Cassette Deck

 

REC/PB : Hard Permalloy

Motor ........................................................................

Erase : Double Gap Ferrite

 

DC servo motor

Wow and Flutter .................................................

50.19%, W.PEAK

Fast Winding Time (C-60 Tape)

0.09%, W.RMS

About 120 seconds

Frequency Response (–20 dB)

30 – 16,000 Hz 53 dB (Normal)

........................................................

 

 

30 – 17,000 Hz 53 dB (CrO2)

Signal-to-Noise Ratio ..................................

30 – 19,000 Hz 53 dB (Metal)

 

58 dB (Dolby NR OFF)

 

 

66 dB (Dolby B NR ON)

Harmonic Distortion ..........................................

74 dB (Dolby C NR ON)

 

No more than 1.2%

Channel Separation (Input Shorted 1 kHz)

Crosstalk.................................................................................(Input Shorted 125 Hz)

More than 40 dB

More than 55 dB

Dimensions (W x H x D)................................

280 x 107.5 x 323 mm

Weight ..............................................................

(11” x 4-1/4” x 12-11/16”)

 

3.5 kg (7 lbs. 11 oz.)
CD player (CDC-S90)

Power Source ...................................

AC supplies from receiver unit

Type .................................................

3 DISC Carousel Auto-changer
Signal Readout

 

........................... Non-contact, 3-beam semi-conductor laser pick-up

D/A Converter ...................................................................

1-bit DAC

Filter ......................................

8-time oversampling 18-bit digital filter

Wow and Flutter .........................................

Below measurable limits

Dimensions (W x H x D)................................

280 x 107.5 x 323 mm

Weight ................................................................

(11” x 4-1/4” x 12-11/16”)

3.8 kg (8 lbs. 6 oz.)
Speaker (NX-S70)

Type ....................................................

Active Servo Processing type

Speakers ........................................................

13 cm (5-1/8”) woofer

Frequency Range ....................................................

5 cm (2”) tweeter
40 – 20,000 Hz

Sound Pressure Level.............................................................

89 dB

Maximum Power Handling Capacity........................................

75W

Impedance ............................................................................

6 ohms

Dimensions (W x H x D)...................................

180 x 360 x 210 mm

Weight ........................................................

(7-1/16” x 14-3/16” x 8-1/4”)

4.5 kg (9 lbs. 14 oz.) x 2

46