ONKYO Integra R-255
¥ 69,000 (around 1972?)
Commentary
This is a receiver that combines a tuner and premain that can be used as independent components.
Equipped with a microphone terminal.
Model Rating
Type | Stereo receiver |
Power Amplifier Unit | |
Circuit system | D&D directly connected to all stages |
Rated Output (8 Ω, 1 kHz) | 20W+20W 23W/23W |
Dynamic Power | 4 Ω : 80W 8 Ω : 52W |
Total harmonic distortion factor (1 kHz at rated output) | Not more than 0.1% |
Power Band With (IHF, -3dB, THD 0.2%) | 20 Hz to 30 kHz |
Signal-to-noise ratio (IHF A network) | 100dB |
Damping Factor (DC ~ 20 kHz, 8 Ω) | 40 |
Load impedance | 4 Ω ~ 16 Ω |
Preamplifier Section | |
Input Sensitivity / Impedance | Phono Gain : 2.5mV/50k Ω AUX : 200mV/50k Ω |
RIAA deviation (30 Hz to 15 kHz) | Within ± 0.5 dB |
Maximum Allowable Input (1kHz/10kHz) | 100mV/380mV |
Tone control | Bass:+8 -10dB(100Hz) Treble:+8 -10dB(10kHz) |
Input terminal | Phono, AUX1, 2, Tape, MIC |
Tuner Section | |
Receiving frequency | FM : 76 MHz to 90 MHz AM : 530 kHz to 1605 kHz |
Sensitivity (SN ratio 30 dB) | FM : 1.8 μ V AM : 150 μ V/m |
Image ratio | FM:82dB(83MHz) AM:45dB(1MHz) |
IF interference ratio | FM:90dB(83MHz) AM:40dB(1MHz) |
Signal-to-noise ratio (IHF) | FM:68dB |
Two signal selectivity | FM : 70 dB or more |
AM suppression ratio | FM : 52 dB or more |
Capture ratio | 1.2 dB or less |
Distortion factor | FM-stereo : 0.5% or less (400 Hz) |
FM-Stereo Separation | 43dB(400Hz) |
Frequency characteristic | FM : 20 Hz to 15 kHz (± 1.5 dB) |
<General> | |
External dimensions | Width 471x Height 138x Depth 370 mm |
Weight | 11kg |