Audio Database

620A  The picture of Monitor

ALTEC LANSING 620A Monitor
358,500 yen(around the one-set and 1977 time)

Description
 
The monitor speaker system which adopted 604-8G which is a coaxial composite-construction unit.

604-8G which is a 38cm same axle type unit of 604 series is adopted as a unit.
Horn Sloat for inside loud sounds is prepared in the form which penetrates the magnetic circuit for low-pass, and the acoustic image of the coaxial composite construction adopted as this unit corresponds on an axial center by the multi-seller phone of an exclusive design. Furthermore, consideration is carried out so that phase difference before and behind a diaphragm may be made into the minimum.
IIn 604-8G, improvement in the wide-range characteristic and transient response characteristic is aimed at for the merit of the sound of the conventional alloy diaphragm integral-type edge by the weight saving of the oscillating mass as it is.

The enclosure is bass-reflex structure and serves as bright oak finishing.
Moreover, clear-cut Brown's mesh grill is used for the saran network.

Installation Unit

Rating of a mode
System 2 ways, 1 speaker bass-reflex system, and a book shelf type
Use unit etc. For [ all the ] zones: 38cm same axle type (604-8G)
Impedance 8ohms
Play frequency band 20Hz - 22kHz
Output sound pressure level (new JIS) 103dB
Allowable input (continuation program) 45W
Crossover frequency 1.5kHz
Dimensions Width 660x height 1016x depth of 457mm
Weight 62.6kg