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OEP Screw Microphone Transformer with Mu-Metal Construction, 600Ω Primary Impedance, 500V Isolation Voltage, United X187B
Specifications
| Country of Origin | United Kingdom |
|---|---|
| Brand | OEP |
| Dimensions | 32 x 34 mm |
| Length | 185mm |
| Model | X187B |
| Depth | 31mm |
| Gross Weight | 100g |
| Mount Type | Screw |
| Construction | mu-Metal |
| Series | X187B |
| Termination Type | Termination Wire |
| Isolation Voltage | 500V |
| Minimum Operating Frequency | 25Hz |
| Maximum Operating Frequency | 30kHz |
| Turns Ratio | 1 CT to 9.13 |
| Primary DC Resistance | 30.9Ω |
| Secondary DC Resistance | 1520Ω |
| Primary Impedance | 600Ω |
| • Input | Blue, Red (CT White) |
| • Output | Black, Green |
| • Secondary Impedance | 50kΩ |
| • Frequency Response | -3dB at 25Hz/40kHZ |
Key Features
- Features varnish impregnated windings for durability.
- Mounting by single 0.375 inch threaded bush with flexible leads.
- Includes center tapped primary ideal for balanced microphone inputs.
- Operation frequency range from 25Hz to 30kHz ensures audio fidelity.
- Primary impedance of 600 ohms and secondary impedance around 50k ohms.
- Constructed with mu-metal for magnetic shielding and hum reduction.
- Isolation voltage rating of 500 volts for electrical safety.
- Compact dimensions of 32 x 34 mm fit diverse installations.
Product Description
OEP X187B Screw Microphone Transformer from the United Kingdom is an essential component for audio signal applications. Designed with quality mu-metal construction, it provides effective shielding to reduce electromagnetic interference and hum pick-up. The transformer caters to microphone input impedance matching for 200Ω to 600Ω microphones connecting into high impedance loads around 50kΩ.
The unit features varnish impregnated windings, ensuring long-term durability and reliability in demanding environments. It utilizes a single 0.375 inch threaded screw bush mounting mechanism with flexible connecting leads for ease of installation and secure fitment in audio systems.
Technical specifications include primary DC resistance of 30.9Ω and secondary DC resistance of 1520Ω. The center tapped (CT) primary winding offers balanced microphone input adaptation, fitting modern audio equipment requirements. Isolation voltage is rated at 500 volts to safeguard against electrical faults.
This model supports a frequency response from 25 Hz to 30 kHz, suitable for wide audio spectrum coverage and precision signal transfer. Physical dimensions of 32 mm by 34 mm and a weight of 100 grams ensure this microphone transformer fits compact audio layouts without compromising performance.
Varnish impregnated windings enhance operational stability. Mount type is screw for easy and secure fixing. Terminations are flexible wires colored blue, red (CT white), black, and green for correct polarity connections.
Turns ratio of 1 CT to 9.13 for impedance matching. Mu-metal enclosure minimizes electromagnetic interference.
This audio transformer is widely used in recording studios, broadcast equipment, and professional sound reinforcement systems. It supports critical industrial and commercial audio applications where signal integrity and noise reduction are paramount.
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Frequently Asked Questions
The primary impedance of this transformer is 600 ohms, making it suitable for matching with 200Ω to 600Ω microphones.
This model operates within a frequency response range of 25 Hz to 30 kHz, ensuring coverage of a wide audio spectrum.
It features a screw mounting mechanism with a single 0.375 inch threaded bush for secure installation.
The isolation voltage rating is 500 volts, providing electrical safety during operation.
The dimensions of this transformer are 32 mm by 34 mm, making it compact for various installations.
It is constructed with mu-metal, which provides effective magnetic shielding and reduces hum interference.
The turns ratio is 1 CT to 9.13, which aids in impedance matching for microphone applications.
The input terminations are blue and red (CT white), while the output terminations are black and green.
The primary DC resistance is 30.9 ohms, which is relevant for its electrical characteristics.
The secondary impedance is approximately 50k ohms, allowing it to connect to high impedance loads.
This microphone transformer is widely utilized in recording studios, broadcast equipment, and professional sound reinforcement systems.
The gross weight of this transformer is 100 grams, facilitating easy handling and installation.
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