ALTEC LANSING 620A Monitor
¥ 358,500 (1 unit, around 1977)
Commentary
This is a monitor speaker system that uses the 604 g coaxial composite structure unit.
604-8G which is a 38 cm coaxial type unit of the 604 series is adopted.
This unit has a coaxial composite structure with a horn throat for middle and high sound passing through the low-frequency magnetic circuit. The sound image matches with the specially designed multi-cellar horn on the axis center. In addition, consideration is given to minimize the phase difference between the front and rear of the diaphragm, and excellent resolution is achieved even under difficult monitoring conditions in which sound of more than 4 channels overlap.
In the 604-8G series, the vibration mass has been reduced in weight while adopting the conventional alloy diaphragm integrated edge, and the wide range characteristics and transient response characteristics have been improved without changing the sound quality of the diaphragm integrated edge.
The enclosure has a bass-reflex structure.
It has a bright oak finish on the exterior and a deep brown mesh grill on the back RUNNET.
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Model Rating
| Method | 2-Way, 1-Speaker, Bass Reflex System, Bookshelf Type |
| Units used, etc. | For All Bands : 38 cm Coaxial Type (604-8G) |
| Impedance | 8 Ω |
| Playback frequency band | 20 Hz to 22 kHz |
| Output sound pressure level (new JIS) | 103dB |
| Allowable input (continuous program) | 45W |
| Crossover frequency | 1.5kHz |
| External dimensions | Width 660x Height 1016x Depth 457 mm |
| Weight | 62.6kg |
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