PHILIPS RH720
¥ 190,000 (around 1972)
Commentary
A stereo receiver that integrates a pre-main amplifier RH521 and a tuner RH621.
Equipped with FM preset touch control mechanism using FET, 6 stations can be easily selected.
It meets the German Industrial Standard (DIN) HiFi specification 45500.
Model Rating
| Type | Receiver |
| Amplifier Unit | |
| Rated output | 30W + 30W (4 Ω, distortion 1% or less) |
| Music power | 40W + 40W (4 Ω) |
| Harmonic distortion factor | 0.1% or Less (20W + 20W) |
| Cross modulation distortion factor | 1% or Less (250 Hz to 8 kHz) |
| Crossover distortion | 0.01% or less |
| Power Band Width (Distortion 1%) | 15 hz to 30 khz -3dB |
| Frequency characteristic | 15 hz ~ 40 khz + 0. 5-3 db |
| Signal-to-noise ratio | -90dB or more (30W + 30W) |
| Crosstalk | -45dB or more (1 kHz) |
| Scratch filter | -12dB/oct (-3dB at 7 kHz) |
| Tone control | Bass : ± 14 dB (50 Hz) Treble : + 14 to -16dB at 10 kHz |
| Loudness control | 2-Step Switching Type |
| Damping factor | 20 or More (4 Ω) |
| Input Sensitivity / Impedance (1 kHz at 30W output per channel) |
Phono : 2mV/50k Ω (DIN5P) Recorder/Monitor : 250mV/100k Ω (DIN5P) Mic : 1mV/2k Ω (DIN5P) |
| Tuner Section | |
| FM sensitivity (S/N26dB, 40 kHz) | 1.4 μ V (300 Ω) |
| AM sensitivity (S/N26dB) | 80 μ V |
| Selectivity | FM : 46 dB (at 300 kHz detuning) AM : 40dB/33dB (at 9 kHz detuning) |
| Distortion factor | Not more than 1% (75 kHz deviation, DIN45500) |
| Pilot frequency suppression | -35dB at 19 kHz and 38 kHz |
| Crosstalk | -35dB at 1 kHz |
| <General> | |
| Semiconductor used | IC : 2 Transistor : 75 pcs Diode : 42 pcs Thyristor : 9 units |
| Power consumption | 60W ~ 160W |
| External dimensions | Width 540x Height 117x Depth 280 mm |
| Weight | - |