Extension cable, manufactured by General Radio, United States of America, in the 1940s
This extension cable was used by architect and acoustician Hugh Vivian Taylor.
Hugh Vivian Taylor started practice as an architect in Victoria, Australia during 1923 and in acoustics in 1928.
The arrival of "talking pictures" in Australia in 1929 required acceptable acoustic conditions to ensure satisfactory reproduction of the sound. From 1930 to 1941 he acted as consultant for at least 434 theatres and public halls.
Acoustic equipment is used to measure the intensity of sound within an environment, for example outdoors or within a building.
The equipment consists of a microphone and sound level meter to pick up the sound, an analyser to determine the properties of the sound, for example, frequency and intensity, and an output meter to measure these properties. In some cases, sounds are produced using test records, for example in a building,
The key instrument is the sound level meter with its microphone. All the other instruments take their input from the sound level meter. These instruments include sound and vibration analysers and tape recorders. In the case of measuring vibrations, the microphone is replaced with a vibration pickup.
The extension cable connects the Vibration Pickup to the Vibration Pickup Control Box. A rod would be inserted to the Pickup to collect vibrations; the other end of the rod placed against the vibratiing surface.
Black cable connecting Vibration Pickup to Vibration Pickup Control Box. The connnection to the Vibration Pickup Control Box is broken. Both Box and Pickup are black metal cases.
The arrival of 'talking pictures' in Australia in 1929 required theatres to have appropriate acoustic characteristics. From 1930 to 1941, H. Vivian Taylor was the architectural and acoustical consultant for at least 434 theatres and public halls.
No inscriptions on cable. Control Box: Type No 759-P36/Serial No 154 Pickup: Vibration Pickup/Type 759-P35 Serail No (illegible)/761-P1
Type of item
2200 mm (Length), 5 mm (Outside Diameter)
Overall Dimensions of cable.
65 mm (Length), 70 mm (Width), 40 mm (Depth)
Dimensions of Pickup.
50 (Length), 100 (Width), 80 (Depth)
Dimensions of Control Box.