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Product Detailed Parameters
- Description：AUDIO XFMR CHAS MNT
- Series：800A
- Mfr：Hammond Manufacturing
- Package：Bulk
- Mounting Type：Chassis Mount
- Size / Dimension：-
- Height - Seated (Max)：1.250" (31.75mm)
- Termination Style：Wire Leads
- Turns Ratio - Primary:Secondary：-
- Impedance - Primary (Ohms)：-
- Impedance - Secondary (Ohms)：-
- DC Resistance (DCR) - Primary：-
- DC Resistance (DCR) - Secondary：-
- Transformer Type：-
- Frequency Range：50Hz ~ 15kHz
- Frequency Response：±0.5dB
- Voltage - Isolation：-
- Insertion Loss：-
- Return Loss：-
- Power Level：15dB
- Operating Temperature：-
- Approval Agency：-
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Overview
The Hammond Manufacturing 809A is a broadcast audio transformer designed for microphone to mixer and base applications. It operates within a frequency range of 50 Hz to 15 kHz. The primary coil impedance options are 50 Ohms or 200 Ohms, while secondary coil impedances include 600 Ohms and 2.4 kOhms. The unit supports a maximum DC current of 600 uA. Physical dimensions are 44.5 mm in length, 31.8 mm in width, and 65 mm in height, with a weight of approximately 226.8 g. The component is shielded and belongs to the 800 series.
Feature Summary
- Designed for broadcast audio signal transmission between microphones, mixers, and base stations.
- Provides electrical isolation and impedance matching for professional audio circuits.
- Features internal shielding to minimize electromagnetic interference during operation.
Applications
- Microphone input stages in broadcast consoles
- Signal interfacing between dynamic microphones and mixing equipment
- Base station audio distribution systems
Procurement Notes
Verify specific impedance configuration requirements against system design specifications before ordering. Confirm lead time availability as production status may vary. Ensure mechanical fit within enclosure constraints given the fixed dimensional profile. Check RoHS compliance documentation if environmental regulations apply to the final assembly.
Selection Notes
Select this model when interfacing low-impedance dynamic microphones with high-impedance mixer inputs requiring broadcast-grade fidelity. Consider the 800 series form factor for standard rack or panel mounting applications. Evaluate the 600 uA DC current limit to ensure compatibility with biasing schemes. Shielding is essential for environments with significant RF noise.
Part Context
Part of the Hammond 800 series audio transformers, which are encapsulated control and signal transformers. This series is characterized by robust construction suitable for industrial and broadcast environments. The 809A specifically addresses the MIC-to-Mixer-to-Base topology, distinguishing it from other series variants like the 807A which targets different impedance transformations.
Replacement Considerations
No public confirmed substitute part numbers are available in the provided documentation. Direct replacement requires matching the primary/secondary impedance pairs and physical envelope dimensions. Consult manufacturer engineering for cross-reference data if original stock is unavailable.
