AMCRON/CROWN RTA-2
¥ 1,199,000 (around the late 1970 s)
Commentary
A real-time analyzer equipped with a CRT display that displays sound field characteristics.
When used in conjunction with a graphic equalizer such as the AMCRON EQ-2, the sound field can be corrected visually.
It can also be used as an oscilloscope by using an external input terminal.
It is equipped with a vernier and a pink noise oscillator whose output can be attenuated by a 0 db or -40dB changeover switch.
32-channel 1/3-octave or 1-octave displays the amplitude-frequency of the input signal on a 5-inch CRT in real time. You can switch between 1/3-octave and 1-octave on the front panel.
Model Rating
| Type | Real-time analyzer |
| Show | 5-inch cathode ray tube |
| Frequency characteristic | 16 Hz to 20 kHz |
| Input sensitivity | Unbalanced : 15.2 mV ~ 150 Vmax, 15.2 μ V ~ 0.5 V or less (-60dB) Balance : 0.76 mV to 3 Vmax, 0.76 μ V to 3 V (-60dB) |
| Sensitivity switching | 0 ~ -70dB (10 dB step) |
| Display Precision | ± 1 dB at the center frequency of each filter (full scale to -40dB) |
| Input impedance | Unbalanced : 1M Ω Balance : 2k Ω |
| Noise generator | Multiple Feedback : 20 Stages (0 to -40dB Switching) Pink Filter : 16 Hz ~ 20 kHz ± 0.5 dB |
| External dimensions | Width 483x Height 178x Depth 381 mm |
| Weight | 10kg |