TRIO KR-5080
¥ 74,800 (around 1970)
Commentary
This is a multi-amplifier receiver making full use of the technology built up with Suprim 1.
The KR 5080 consists of an FM/AM tuner, preamp, three channel divider, and six power amplifiers.
Equipped with 6 independent level controls on the left and right.
Two high, mid, and low frequencies are available, and the crossover frequency can be set so that the characteristics of each speaker can be extracted.
The crossover frequency can be switched to 3 levels for both low and medium range and high and high range. It can be combined with a full-range speaker 2-way and 3-way speakers.
Functions such as DIN connector, tape monitor and SCA filter are included.
Model Rating
| Type | Multi-amplifier receiver |
| Amplifier Unit | |
| Circuit type | Multi-amplifier system with six power amplifiers |
| Music power (IHF, 8 Ω, distortion factor 0.8%) |
For Low Band : 40W (20W/20W) Medium : 32W (16W/16W) For High Frequency : 15W (7.5W/7.5W) |
| Effective output (IHF, 8 Ω, distortion factor 0.8%) | Low Band : 36W (18W/18W) For Medium Range : 28W (14W/14W) For High Frequency : 10W (5W/5W) |
| Frequency response (overall) | 15 Hz to 60 kHz -2dB |
| Output bandwidth (at a distortion rate of 0.8% and an effective output of -3dB) |
Low Frequency : 18 Hz ~ 50 kHz For Middle Range : 200 Hz ~ 50 kHz For High Frequency : 800 Hz ~ 50 kHz |
| Built-in crossover frequency (18dB/oct) |
Low-Mid : Flat, 400 Hz, 800 Hz Mid-High : Flat, 3.5 kHz, 5 kHz |
| Damping factor | 10 or More (4 Ω) 20 or More (8 Ω) |
| Input terminal and gain (Input Voltage to Effective Output) |
Phono MAG:2.4mV(1kHz) Tape play : 130mV/50k Ω (1 khz) |
| S / N ratio (effective input, volume adjustment maximum Tone control flat) |
Phono MAG : -65dB or more Tape play : -80dB or more |
| Tone control | ± 11 dB at 50 Hz ± 11 dB at 10 kHz |
| Loudness control | + 9 dB (100 Hz, volume control -30dB) |
| Equalizer | RIAA |
| Residual noise | Low : 1 mV or less Mid : 0.5 mV or less High : 0.5 mV or less |
| Tuner Section | |
| Sensitivity (IHF) | FM : 2.0 μ V AM : 15 μ V |
| FM Distortion Factor (400 Hz, 100% modulation) | Not more than 0.65% |
| Image ratio | FM : 55 dB or more AM : 55 dB or more |
| FM multi-section separation | 35 dB or More (400 Hz) |
| FM antenna impedance | 300 Ω equilibrium |
| <General> | |
| Tuner unit attached function | FM mono-stereo automatic switching circuit FM stereo display lamp SCA Filters AM ferrite bar antenna Tuning indicator meter |
| Function attached to the amplifier | Electronic crossover multi-channel circuit Tape monitor DIN standard 5P recording and playback terminal Loudness control Headphone jack Bass/Treble control |
| Pwer | 100 VAC / 117 V, 50Hz/60Hz |
| Power consumption | 140W at maximum output 27.5W (No Signal) |
| External dimensions | Width 538x Height 132x Depth 405 mm |
| Weight | 11.0kg |
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