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- Magnavox Audio Frequency Amplifier, Type AC-3 B, 1920-1927 - This amplifier was designed for use with a public address system, in large venues. Equipment like this made it possible for Americans to listen together--from the voices of politicians at rallies--to recorded music in the dance hall. The new mass medium of radio now had the ability to pervade listening practices at home, and in public.

- 1920-1927
- Collections - Artifact
Magnavox Audio Frequency Amplifier, Type AC-3 B, 1920-1927
This amplifier was designed for use with a public address system, in large venues. Equipment like this made it possible for Americans to listen together--from the voices of politicians at rallies--to recorded music in the dance hall. The new mass medium of radio now had the ability to pervade listening practices at home, and in public.
- Magnavox Audio Frequency Amplifier, Type AC3, Model D, 1920-1927 -

- 1921-1922
- Collections - Artifact
Magnavox Audio Frequency Amplifier, Type AC3, Model D, 1920-1927
- Grebe Audio Frequency Amplifier, Type RORK, 1920-1923 - Early radio broadened the cultural horizons of its users beyond the town or county line--the audio frequency amplifier promised to reach even further. While amplifiers are often thought of as devices that only increase the volume of sound, the frequency amplifier was used to enhance weak radio signals. By increasing the receiver's performance, long-distance stations could be received.

- 1920-1923
- Collections - Artifact
Grebe Audio Frequency Amplifier, Type RORK, 1920-1923
Early radio broadened the cultural horizons of its users beyond the town or county line--the audio frequency amplifier promised to reach even further. While amplifiers are often thought of as devices that only increase the volume of sound, the frequency amplifier was used to enhance weak radio signals. By increasing the receiver's performance, long-distance stations could be received.
- Western Electric Audio Frequency Amplifier, Type 7A, 1931-1935 -

- 1931-1935
- Collections - Artifact
Western Electric Audio Frequency Amplifier, Type 7A, 1931-1935
- Loudspeaker Horn, 1920-1940 -

- 1920-1940
- Collections - Artifact
Loudspeaker Horn, 1920-1940
- Crowd Listening to a Magnavox Public Address System, circa 1920 -

- circa 1920
- Collections - Artifact
Crowd Listening to a Magnavox Public Address System, circa 1920
- Jensen Electro-Dynamic Speaker, 1929 -

- 1929
- Collections - Artifact
Jensen Electro-Dynamic Speaker, 1929
- Jensen Electro-Dynamic Concert Speaker, Model A-12, 1927-1943 -

- 1927-1943
- Collections - Artifact
Jensen Electro-Dynamic Concert Speaker, Model A-12, 1927-1943
- Magnavox Audio Frequency Amplifier, Type AC2 Model B, 1920-1927 - This amplifier was designed for use with a public address system, in large venues. Equipment like this made it possible for Americans to listen together--from the voices of politicians at rallies--to recorded music in the dance hall. The new mass medium of radio now had the ability to pervade listening practices at home, and in public.

- 1920-1927
- Collections - Artifact
Magnavox Audio Frequency Amplifier, Type AC2 Model B, 1920-1927
This amplifier was designed for use with a public address system, in large venues. Equipment like this made it possible for Americans to listen together--from the voices of politicians at rallies--to recorded music in the dance hall. The new mass medium of radio now had the ability to pervade listening practices at home, and in public.
- Western Electric Audio Frequency Amplifier, Type 7A, 1931-1935 -

- 1931-1935
- Collections - Artifact
Western Electric Audio Frequency Amplifier, Type 7A, 1931-1935