ALTEC LANSING 724A
Price unknown (1 unit, released in 1970)
Commentary
FM/AM tuner preamplifier with all-transistor configuration.
It is designed for maximum performance when combined with an electronic crossover bi-amplifier 770A.
High sensitivity and stability have been obtained by using FET for the tuner section.
Plug-in modular circuit design is employed.
Model Rating
| Method | FM/AM Tuner Preamplifier |
| Preamplifier Section | |
| Input sensitivity | Phono:2.0mV |
| Frequency characteristic | 20 Hz to 20 kHz ± 0.5 dB |
| Hum, noise level | Aux, Tape : -90dB or less Phono : -60dB or less |
| High filter | 12dB/oct. (6 kHz or more) |
| Low filter | 12dB/oct. (50 Hz or less) |
| Tone control | ± 16 db (20 Hz, 20 kHz) |
| Harmonic distortion factor | 0.05% or Less (1 Vrms) |
| FM Tuner Section | |
| Capture ratio | 1.3dB |
| Stereo separation | 40 dB or More (1 kHz) |
| Harmonic distortion factor | 0.3% (at 100% modulation) |
| Frequency characteristic | 20 Hz to 15 kHz ± 1 dB |
| Image ratio | 90dB |
| <AM Tuner Section> | |
| Input sensitivity | 15 μ V (20 dB S/N) |
| Signal-to-noise ratio | 48 dB at 1 mV |
| <General> | |
| External dimensions | Width 440x Height 130x Depth 420 mm |