Audio Database


a price -- unknown

It is the voice monitor system which incorporated and developed the amplifier of the all transistor system in 1964 (Showa 39) to the 2S-305 type speaker system which is acknowledged as a monitor speaker for broadcast.

The outstanding quality control and the stereophonic reproduction where sound was stabilized as an object for the sound quality surveillance of a stereophonic broadcast by simple composition are obtained.

The caster is united with the position of the lug where the height of the speaker sat on the chair by attachment.

Those days, it was extensively adopted as NHK Broadcasting Center.

The tip of an input cord makes a canon connector a standard.

The color tone of a cabinet makes a standard a BTS-0001 association color (gray) and No. 2 (75B5/0.5).

Rating of a mode
System 2 ways, 2 speaker bass-reflex system, and a floor type
Composition, such as a unit For low-pass: 30cm corn type (PW-125)
For high regions: 5cm corn type (TW-25)
network: -- H.P. -170 type highpass filter
amplifier: -- MA -150 type all transistor type amplifier
Caster: MC-1370 type
Play frequency band 50Hz-15000Hz±5dB
Input level -22dBm
Input impedance 600 ohms, 10kohm (balance)
Crossover frequency 1500Hz
Maximum-except-take-off sound pressure level 108dB/m
-less distorted maximum-except-take-off sound pressure level 102dB/m
Power source AC100V, 60VA
Dimensions Only a main part is the :width 650x height 940x depth of about 445mm.
Caster included: Width 850x height 1405x depth of 475mm
Weight 68kg