ONKYO Integra T-4500
¥ 34,800 (around 1975)
Commentary
Integra GT series FM/AM tuners.
High sensitivity is realized by adopting a low-noise FET in the front end part, and it is strong for large input and sufficiently prevents spurious interference by combining with a 3-row varicon.
The IF stage uses a 4-element linear phase type ceramic filter.
PLL IC is used in the MPX section, and the stability of separation is improved by eliminating the coil.
Low pass filter with high attenuation of up to 65 dB carrier leak reduces noise.
A full-scale power supply circuit and a 2-stage direct-coupled output circuit are used for the output circuit.
It is designed to allow for overmodulation of broadcasting stations, and there is no degradation of sound quality even when overmodulation occurs.
Uses a 2-meter system consisting of a signal meter and a tuning meter.
Equipped with an FM75 Ω antenna terminal.
Equipped with muting and noise filter.
Equipped with an AM bar antenna.
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Model Rating
| Type | FM/AM Tuner |
| FM Tuner Section | |
| Receiving frequency | 76 to 90 MHz |
| Receive Sensitivity (IHF) | 1.9 μ V (S/N 30 db) |
| Image ratio | 50dB(83MHz) |
| IF interference ratio | 85dB(83MHz) |
| S/N(IHF) | 70dB |
| Two signal selection ratio (IHF) | 60dB |
| AM suppression ratio (IHF) | 50dB |
| Capture Ratio (IHF) | 1.0dB |
| Strain Rate (400 Hz) | stereo:0.4% mono:0.2% |
| Frequency characteristic | 20 Hz to 15 kHz ± 1.0 dB |
| Separation | 40dB(1kHz) 35 dB (100 Hz to 10 kHz) |
| Output Power (400 Hz, 100%) | Variable:1.2V Fixed:0.7V |
| <AM Tuner Section> | |
| Receiving frequency | 530 to 1,605 kHz |
| Image ratio | 50dB(1MHz) |
| IF interference ratio | 33dB(1MHz) |
| S/N | 33 dB (1mV/m input) |
| Distortion factor | mono:0.5% |
| Output Power (400 Hz, 30%) | Variable:0.35V Fixed:0.2V |
| <General> | |
| External dimensions | Width 410x Height 143x Depth 303 mm |
| Weight | 5.0kg |
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