Yamaha CR-1000

 The performance specifications of Yamaha's CR-1000 professional-class stereo receiver are distinguished i two ways; they are superb and, like all Yamaha stereo specifications, they are conservatively rated and guaranteed. This of course says a great deal about the kind of quality the audiophile should expect from this receiver; but it says even more about the company that would build it. By any standards, the CR-1000 is an important achievement. It is a combination of an outstanding FM tuner and an extremely low-distortion, high-power, versatile amplifier, both of which could stand by themselves as independent hi-fi components. (It does not include an AM tuner because the discriminating music lover would most likely prefer to be without it.) the unit features the world's first application of negative feedback to the FM tuner's multiplex switching circuit, resulting in very low harmonic distortion and intermodulation distortion. Power is prodigious; RMS continuous output of 70 watts per channel into 8 ohms, both channels driven, at 0,1% THD over 20 Hz to 20 kHz. Because the FM tuner uses an elaborate 5-gang tuning capacitor, as well as a triple tuning circuit with dual-gated MOS-FET's, the quality of FM reception is at the highest level presently possible for a tuner of any cost. Which leads us to another significant facet of the CR-1000. with all its excellence, you shall discover its price to be surprisingly agreeable. This, by itself, makes the CR-1000 a most unique stereo proposition.

 FM Tuner Section Features:

Super-Sensitive FM Front End with Dual-gated MOS-FET's and Frequency-Linear 5-Gang Tuning Capacitor.

IC IF Amplifier with 7-stage Differential Amplifier and Six Ceramic Filters

A Yamaha Exclusive - Multiplex Demodulator with Negative Feedback-Applied Transistor Switching Circuit.

Yamaha-Exclusive Auto-Touch Tuning

Wide-Dynamic-Range Signal Strength Meter and Precise Center Meter.

Permanent Light-emitting Diode Indicators for Power, FM Stereo and AFC/Station.

Thump-free Switched, Double FM Muting with Muting Level Control.

Wide, Precise, Ultra-Smooth Tuning Dial.

300-Ω and 75-Ω Antenna Terminals

 Preamplifier Section Features:

Direct-Coupled Phono Equalizer.three-Stage Direct-Coupled, Low-Noise, Low-Distortion Tone Control and Filter Amplifiers.

Continuous Loudness Control

Specialized Microphone Amplifier for Mic Mixing.

Two Tape Record/Monitor Circuits with Dubbing.

Power Amplifier Features:

Direct-Coupled OCL Pure Complementary Power Amplifier

Two 10,000 Micro-Farad Power Supply Capacitors for High Power

Built-in Protection for Power Transistors and Speakers

Other Features:

Separable Preamplifier and Power Amplifier

Connects Two Pairs of Speaker Systems

Logical Front-Panel Control Arrangement; All Switches and Controls Have a Smooth, Firm, Professional Feel and are Arranged for Ease of Operation.

Two Phono Input Circuits, with Input Impedance Selector (100, 50 or 30 K Ω) for One

Four Convenient AC Outlets, Two Controlled by the Receiver's Power Switch

Two Large Grounding Terminals

Headphone Jack

Foolproof One-Touch Speaker Terminals

IF Output for 4-channel Capability

Multipath Output for Improved Antenna Setting.

Specifications

Audio Section

Power Output

Dynamic Power (IHF):  200 watts at 4 Ω; 200 watts at 8 Ω

Continuous RMS Power (each channel driven):

100/100 watts  at 1,000 Hz (4 Ω)

80/80 watts at 1,000 Hz (8 Ω)

Continuous RMS Power (both channel driven):

100/100 watts  at 1,000 Hz (4 Ω)

75/75 watts at 1,000 Hz (8 Ω)

Total Harmonic Distortion

Power Amplifier Only:  less than 0,1% at rated power (0,04% at 1 watt)

Preamplifier Only :

Phono to Pre-Out:    less than 0,1% at rated power

Aux to Pre-Out :  less than 0,02%  at rated power

Overall (Aux to Power Output):  less than 0,1% at rated power

Intermodulation Distortion (70 Hz : 7,000 Hz = 4:1 SMPTE method):

Power Amplifier Only (8 Ω):  less than 0,1% at rated power (0,05% at 1 watt)

Overall (Aux to Power Output):  less than 0,1% (8 Ω) at rated output

Power Bandwidth (IHF):  5 to 50,000 Hz (distortion 0,5% const.)

Frequency Response (at 1 watt):

Overall (Aux,Tape Pb to Power Output):  10 to 50,000 Hz +0,5 dB -1,0 dB

Overall (Mic to Power Output):  100 to 10,000 Hz +0,5 dB -6 dB

Power Amplifier Only:  10 to 100,00 Hz +0 dB -1 dB

Deviation from RIAA :  30 to 15,000 Hz ±0,2 dB

Load Impedance:  4 to 16 Ω

Damping Factor:  70 at 1,000 Hz

Channel Separation (at rateed power. 1 kHz)

Power Amplifier Only : 60 dB

Overall from Phono 1, 2 :  50 dB

Overall from Aux, Tape Pb :  50 dB

Overall from Mic :  50 dB

Hum and Noise (IHF, Closed Circuit A Network):

Overall from Phono 1, 2 :  better than 80 dB

Overall from Mic :  better than 70 dB

Overall from Aux, Tape Pb :  better than 90 dB

Power Amplifier Only :  better than 100 dB

Volume at Minimum :  better than 90 dB

Input Sensitivity / Impedance (at rated power, 1 kHz):

Phono 1 :  3 mV / 30 k Ω, 50 k Ω, 100 k Ω

Phono 2 :  3 mV / 50 k Ω

Phono 1, 2 Max. Input Capability:  280 mV (THD 0,1%)

Mic :  3 mV / 50 k Ω

Mic Max. Input Capability:  450 mV (THD 0,3%)

Aux 1, 2 :  150 mV / 40 k Ω

Tape Pb A, B :  150 mV / 40 k Ω

Power Amplifier Input:  775 mV / 40 k Ω

Output Level / Impedance (at rated Power, 1 kHz)

Tape Rec Out A, B :  150 mV ? 2 k Ω

Pre Out :  775 mV / 2 k Ω ; 3,000 mV (Max output THD 0,1%)

Tone Controls

Bass :  ±15 dB at 50 Hz

Treble :  ±10 dB at 10 kHz

Filters

Low :  -3 dB at 20 Hz , 70 Hz, (12 dB/oct)

High :  -3 dB at 6 kHz, 12 kHz (6 dB/oct)

Loudness Control (Volume at Minimum):  +10 dB at 100 Hz;  +5 dB at 10,000 Hz

FM Tuner Section

Tuning Range:  88 - 108 MHz

Sensitivity (Mono):

IHF :  1,7 µV

DIN (40 kHz Dev, S/N 26 dB) :  1,1 µV

Sensitivity (Stereo):

DIN (40 kHz Dev, S/N 46 dB) :  40 µV

Quieting Slope:  55 dB at 5 µV; 60 dB at 10 µV

Limiting Level (-3 dB):  1,1 µV

Image Frequency Rejection:  110 dB

IF Rejection:  110 dB

Spurious Response Rejection:  110 dB

AM Rejecton:  55 dB

Capture Ratio:  1 dB

Selectivity:  80 dB (IHF); 65 dB (DIN, 40 kHz Dev, ±300 kHz)

Signal-to-Noise Ratio (Mono):

IHF (75 kHz Dev) :  75 dB

DIN (40 kHz Dev) :  69 dB

Signal-to-Noise Ratio (Stereo):

IHF (75 kHz Dev) :  72 dB

DIN (40 kHz Dev) :  66 dB

Total Harmonic Distortion (Antenna Level; 1mV)

MONO

IHF (400 Hz; 75 kHz Dev) :  0,15%

DIN (1 kHz; 40 kHz Dev) :  0,15%

50 - 10,000 Hz

IHF (75 kHz Dev) :  0,30%

DIN (40 kHz Dev) :  0,30%

STEREO

IHF (400 Hz; 75 kHz Dev) :  0,30%

DIN (1 kHz; 40 kHz Dev) :  0,30%

50 - 10,000 Hz

IHF (75 kHz Dev) :  1,0%

DIN (40 kHz Dev) :  1,0%

Stereo Separation:

IHF (400 Hz; 75 kHz Dev) :  45 dB

DIN (1 kHz; 40 kHz Dev) :  45 dB

50 - 10,000 Hz

IHF (75 kHz Dev) :  35 dB

DIN (40 kHz Dev) :  35 dB

Frequency Response:

50 - 10,000 Hz :  ±0,5 dB

20 - 15,000 Hz :  ±1,5 dB

Sub-Carrier Supression:  60 dB

Muting Override Signal Level:  10 - 50 µV

Stereo Level:  10 - 50 µV

Antenna Impedance:  300 Ω (balanced), 75 Ω (unbalanced)

IF Out Level and Impedance:  400 mV / 1 k Ω

General

Semiconductors:  2 Ics, 2 MOS FET's, 98 Transistors, 10 FET's, 3LD's, 56 Diodes, 5 Zener Diodes

Power Source:  Ac 117 V 50/60 Hz

Power Consumption:  430 watts (Max), 250 watts (rated)

AC Outlets:  2 Switched (total 200 watts), 2 Unswitched (total 200 watts)

Dimensions (W x H x D):  510 x 174 x 335 mm (20" x 6 ¾" x 13 ¼")

Weight:  19 kg (41,8 lbs)