Introduction
The Azden SGM-250 is a professional dual-powered shotgun microphone designed for high-quality audio capture in various video production environments. It features a high-sensitivity, low-noise condenser element and a supercardioid polar pattern for focused sound pickup. This manual provides essential information for the proper setup, operation, and maintenance of your SGM-250 microphone.
Product Overview
The SGM-250 offers versatile power options and robust construction, making it suitable for demanding professional use. Key features include:
- High sensitivity, low-noise condenser microphone element.
- Wide frequency response for accurate audio capture.
- Equipped with a low-cut filter switch to reduce unwanted low-frequency noise.
- Supercardioid polar pattern for rejecting side noise and focusing on the sound source.
- Dual-Powered: Operates on 48V phantom power or a single AA battery without compromising performance.
- LED battery indicator light for convenient power monitoring.
- Handcrafted in Japan, ensuring high build quality.
Image: The Azden SGM-250 microphone with its foam windscreen and shock mount attached.
Video: An overview of the Azden SGM-250 Professional Dual Powered Shotgun Microphone, highlighting its features and applications.
What's in the Box
Your Azden SGM-250 package includes the following components:
- Azden SGM-250 Shotgun Microphone
- Microphone Clip with Shock Mount
- Foam Windscreen
- Leatherette Carrying Pouch
Video: An unboxing and feature demonstration of the Azden SGM-250 microphone, showing the included accessories.
Setup
1. Battery Installation (if not using Phantom Power)
- Unscrew the rear section of the microphone body.
- Insert one AA battery, ensuring correct polarity (+/-).
- Securely screw the rear section back onto the microphone body.
Image: Proper installation of an AA battery into the microphone body.
2. Mounting the Microphone
- Attach the shock mount to a camera shoe mount, boom pole, or stand.
- Gently slide the SGM-250 microphone into the shock mount clips until it is securely held.
- For outdoor use or to reduce wind noise, slide the foam windscreen over the microphone head.
Image: The Azden SGM-250 microphone mounted on its shock mount, without the foam windscreen.
3. Connecting to Your Device
Connect the microphone to your camera, audio recorder, or mixer using an XLR cable. The SGM-250 features a gold-plated XLR connector for reliable signal transfer.
Operation
1. Powering On/Off and Power Source Selection
The SGM-250 offers two power options: 48V phantom power or a single AA battery. Use the power switch on the microphone body to select the desired mode:
- OFF: Turns the microphone off.
- BATT: Activates battery power. The LED indicator will light up when the battery is active and sufficient.
- 48V: Activates phantom power. This option is used when your camera or audio recorder provides 48V phantom power via the XLR input.
Image: Detail of the power selection switch (OFF/BATT/48V) and low-cut filter switch.
2. Low-Cut Filter
The SGM-250 includes a switchable low-cut filter. This filter helps to reduce unwanted low-frequency noise such as rumble from air conditioners, traffic, or wind. Engage the low-cut filter by sliding the switch to the appropriate position when such noise is present.
3. Monitoring Audio
Always monitor your audio using headphones connected to your recording device. This ensures that the microphone is picking up sound correctly and helps identify any potential issues with levels or interference.
Maintenance
- Cleaning: Use a soft, dry cloth to clean the microphone body. Avoid using liquid cleaners or solvents.
- Storage: When not in use, store the microphone in its leatherette carrying pouch to protect it from dust and physical damage. Remove the AA battery if storing for extended periods to prevent leakage.
- Handling: Handle the microphone with care. Avoid dropping it or exposing it to extreme temperatures or humidity.
Troubleshooting
No Sound Output
- Check that the microphone is switched ON (BATT or 48V).
- If using battery power, ensure the AA battery is fresh and correctly installed. Check the LED indicator.
- If using 48V phantom power, confirm that your recording device is supplying phantom power and that the microphone switch is set to 48V.
- Verify that the XLR cable is securely connected at both ends and is not damaged.
- Check the input levels on your recording device.
Poor Sound Quality / Excessive Noise
- Ensure the microphone is pointed directly at the sound source.
- Engage the low-cut filter if experiencing low-frequency rumble.
- Check for environmental noise sources (e.g., air conditioning, traffic) and try to minimize them.
- Ensure the microphone is properly isolated from vibrations using the shock mount.
- Verify that recording levels are not too high (causing distortion) or too low (resulting in hiss).
Specifications
| Feature | Specification |
|---|---|
| Brand | AZDEN |
| Model Name | SGM-250 |
| Connectivity Technology | XLR |
| Connector Type | 3.5 mm Jack (implied for camera connection, but primary is XLR) |
| Special Feature | Battery Indicator Light, Clip |
| Compatible Devices | Camera |
| Color | Black |
| Polar Pattern | Unidirectional (Supercardioid) |
| Microphone Form Factor | Shotgun |
| Power Source | Battery Powered (1 AA battery) / 48V Phantom Power |
| Signal-to-Noise Ratio | 77 dB |
| Hardware Platform | Camera |
| Number of Channels | 1 |
| Frequency Response | 20 Hz - 20,000 Hz (inferred from 20000 Hz max) |
| Item Weight | 0.4 Kilograms |
| Item Dimensions | 12.6 x 4.65 x 2.44 inches |
Warranty and Support
The Azden SGM-250 Professional Dual Powered Shotgun Microphone is backed by a 10-year manufacturer's warranty, reflecting its high quality and durability.
For technical support, service, or warranty claims, please contact Azden customer service through their official website or authorized service centers. Keep your proof of purchase for warranty validation.