The Studio Technologies Model 47A Interface is a professional-grade analog interface engineered to bridge 2-wire full-duplex party-line intercom circuits with 4-wire audio systems - ideal for broadcast, production, and advanced intercom installations.
The Model 47A is designed to interface 2-wire full-duplex party-line (PL) intercom circuits with 4-wire audio circuits associated with matrix intercom systems. Other specialized audio system interfacing applications can also be supported. The Model 47A provides two independent full-featured 2-channel interfaces. Each interface contains two hybrid circuits which include automatic nulling capability. The analog circuitry, under software control, provides excellent audio quality and high return-loss. The interfaces are compatible with powered and unpowered 2-wire party-line circuits. They are capable of supplying DC power to devices such as user beltpacks and user stations. Independent power sources are provided for both channels (pins 2 and 3) of each interface, allowing direct support for broadcast source assignment panel (SAP) applications. Configuration settings allow the 2-wire and 4-wire interface circuitry to be compatible with a range of nominal signal levels. Audio level meters provide user confirmation of system performance during setup and operation. Applications for the Model 47A include mobile and fixed television facilities, theme park and theater installations, and industrial testing environments. Standard audio connectors are used for all input and output signals. The Model 47A mounts in one space (1U) of a standard 19-inch rack enclosure and requires 100-240 V, 50/60 Hz for operation.
Studio Technologies Model 47A Interface Features
- Two 2-channel party-line intercom interfaces
- Four analog hybrids with auto null capability
- Input and output level metering
- Excellent audio quality
- 2-channel intercom power sources
- Direct support for broadcast SAP panel applications
- Standard audio connectors
- Universal input mains powered
Studio Technologies Model 47A Interface Includes
- Studio Technologies Model 47A Interface
- Power Cord
- User Guide
- Manufacturer Warranty
No review yet, Be first to Write a Review
Write a Review

Sign Up for exclusive sales and offers!