Yamaha

CR-420/U

Receiver

Main Details
Maker Yamaha Brand Nippon Gakki Co. Ltd. Company
Function
Channels/Tracks
  • 2 × Channel
Form Factor Standard Width
Signal Path Analog Hardware
Made In Japan
Date Produced 1977
Dimensions
(H × W × D)
Weight 18.7lbs
Power Source 120VAC, 60Hz 130W
Frequency Response 20Hz-20kHz ±1.5dB
Notes US market specific model. Power supply and back panel differs between variants.
Additional Specifications
Output Power (20Hz-20kHz, 0.05% THD, 8/4Ω) 22/25W
Output Power (1kHz, 0.05% THD, 8Ω) 25/50W
Power Bandwidth 10Hz-40kHz
Damping Factor (1kHz, 8Ω) 40
THD 0.05%
Input Sensitivity (Phono, 1kHz) 2mV
Input Level (Phono, Max) 110mV
Input Impedance (Phono, 1kHz) 50kΩ
Input Sensitivity (Aux) 120mV
Input Impedance (Aux) 45kΩ
Input Sensitivity (Tape) 120mV
Input Impedance (Tape) 45kΩ
Output Level (Rec. Out, Phono) 120mV
Output Impedance (Rec. Out, Phono) 220Ω
Output Level (Rec. Out, Tuner) 120mV
Output Impedance (Rec. Out, Tuner) 6kΩ
Output Level (Rec Out, Max) 9V
Frequency Response (Phono, RIAA Deviation) ±0.5dB
Frequency Response (Aux) 20Hz-20kHz ±1.5dB
Frequency Response (Tape) 20Hz-20kHz ±1.5dB
SNR (Phono, IHF A Network, 10mV) 91dB
SNR (Aux, IHF A Network) 97dB
SNR (Tape, IHF A Network) 97dB
Residual Noise (IHF A Network) 0.14mV
THD (Phono) 0.05%
THD (Aux, 11W/8Ω) 0.02%
THD (Aux, 23W/8Ω) 0.05%
THD (Tape, 11W/8Ω) 0.02%
THD (Tape, 23W/8Ω) 0.02%
IMD (Aux, 11W/8Ω) 0.02%
IMD (Aux, 22W/8Ω) 0.05%
Tuning Range (FM) 87.6MHz-108MHz
Usable Sensitivity (FM, 98MHz, IHF, Mono, 300Ω) 1.8µV 10.3dBf
Usable Sensitivity (FM, 98MHz, IHF, Mono, 75Ω) 0.9µV 10.3dBf
Usable Sensitivity (FM, 98MHz, DIN, Mono) 1.5µV SNR: 26dB
Usable Sensitivity (FM, 98MHz, DIN, Stereo) 50µV SNR: 46dB
Sensitivity (FM, 50dB Quieting, Mono) 3.5µV 16.1dBf
Sensitivity (FM, 50dB Quieting, Stereo) 43.5µV 38.0dBf
SNR (FM, Mono) 77dB
SNR (FM, DIN, Mono) 71dB
SNR (FM, Stereo) 71dB
SNR (FM, DIN, Stereo) 65dB
Image Interference Ratio (FM, 98MHz) 50dB
IF Interference Ratio (FM, 98MHz) 75dB
Spurious Interference Ratio (FM, 98MHz) 75dB
Amplitude Suppression Ratio (IHF) 56dB
Capture Ratio 1dB
Effective Selectivity (FM) 65dB
Effective Selectivity (FM, DIN) 30dB
THD (FM, Mono, 100Hz) 0.15%
THD (FM, Mono, 1kHz) 0.15%
THD (FM, Mono, 6kHz) 0.3%
THD (FM, Stereo, 100Hz) 0.25%
THD (FM, Stereo, 1kHz) 0.25%
THD (FM, Stereo, 6kHz) 0.8%
Cross Modulation Distortion (Mono, IHF) 0.1%
Cross Modulation Distortion (Stereo, IHF) 0.2%
Stereo Separation (FM, 50Hz) 30dB
Stereo Separation (FM, 1kHz) 40dB
Stereo Separation (FM, 10kHz) 30dB
Frequency Response (FM, ±0.5dB) 50Hz-10kHz
Frequency Response (FM, +1/-3dB) 30Hz-15kHz
Sub Carrier Suppression 40dB
Tuning Range (AM) 525kHz-1605kHz
Sensitivity (AM, IHF) 18µV/m
Selectivity (AM, 1kHz) 20dB
SNR (AM, 80dB/m) 50dB
Image Rejection (AM, 1kHz) 40dB
IF Interference (AM, 1kHz) 40dB
Spurious Interference Ratio (AM, 1kHz) 50dB
THD (AM, 80dB/m) 0.6%
Output Level (FM, 100% Modulation) 450mV
Output Impedance (FM, 100% Modulation) 6.5kΩ
Output Level (AM, 30% Modulation) 100mV
Output Impedance (AM, 30% Modulation) 6.5kΩ
MSRP (1978) $280 MSRP (1979): $220

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