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A high-fidelity audio system
Type 44 'A Velocity Microphones
plus
Type 41' AM.icrophone Amplifier
Type 41' A Microphone Amplifier (Door removed)
Development of the Velocity Microphone promises to greatly accelerate the trend toward higher broad' cast quality. Advertisers and advertising agencies, as well as broadcast station owners and engineers, have become much interested in the increased fidelity these microphones make possible. As a result many stations are planning new high-quality audio systems using Velocity Microphones exclusively. Such systems require a microphone amplifier of equal quality. Engineers of the RCA Victor Company have developed the Type 41A Amplifier for the purpose. Incorporating jsuch new features as automobile-type
tubes to prevent microphonics, heater-cathodes to facilitate use of rectified a.c, and the use of a screengrid tube in the first stage to give high amplification, this amplifier represents the latest advance in speech amplification. Designed to harmonize in appearance with other standard units it may be used with present high-quality installations and Velocity Microphones to form an audio system capable of heretofore unapproached fidelity. Engineers planning new audio installation may make sure of obtaining Bulletin No. 25 describing this amplifier by writing the nearest address. It will be sent at once.
TRANSMITTER SECTION
RCA Victor Company, Inc.
CAMDEN, N. J.
New York: 153 E. 24th St. Chicago: 111 N. Canal St.
"RADIO HEADQUARTERS"
Dallas: Santa Fe Bldg. San Francisco: 235 Montgomery St.