Introduction
The Heil Sound PR-20 is a professional large diaphragm dynamic microphone designed for a wide range of audio applications. Its robust construction and specific acoustic properties make it suitable for capturing vocals, guitars, drums, and other instruments in live sound, studio, and broadcast environments. This manual provides essential information for the proper setup, operation, and maintenance of your PR-20 microphone.
Product Features
- Steel Body Construction: Ensures durability and longevity.
- Dynamic Transducer: Utilizes a strong neodymium magnet assembly for high output and wide frequency response.
- Wide Frequency Response: Captures sound accurately from 40 Hz to 18 kHz.
- 600 Ohm Impedance: Standard impedance for professional audio equipment.
- Output Level: -55dB at 1,000 Hz.
- Unidirectional Polar Pattern: Provides excellent rejection of off-axis sound, minimizing feedback and isolating the sound source.
- Included Accessories: Comes with a microphone, three interchangeable acoustically identical mesh screens (Silver, Black, Gold), an additional black acoustical foam windscreen, a padded carrying case, and a mic stand clip.
Setup
1. Unpacking and Inspection
Carefully remove the PR-20 microphone and its accessories from the packaging. Inspect all components for any signs of damage. The package should include the microphone, three mesh screens (silver, black, gold), a foam windscreen, a padded carrying case, and a mic stand clip.
Image: Heil Sound PR-20 microphone with interchangeable mesh screens and mic clip in a padded carrying case.
2. Attaching the Microphone Clip
Securely attach the provided microphone clip to a standard microphone stand. Ensure the clip is tightened sufficiently to hold the microphone firmly in place.
3. Connecting the XLR Cable
The PR-20 uses a standard 3-pin XLR connector. Connect one end of a balanced XLR cable to the microphone's output and the other end to an input on your mixer, audio interface, or amplifier. Ensure a secure connection to prevent signal loss or interference.
Image: The base of the Heil Sound PR-20 microphone showing the 3-pin XLR connector.
4. Selecting a Mesh Screen
The PR-20 includes three acoustically identical mesh screens (silver, black, gold). Choose the screen that best suits your aesthetic preference. To change the screen, gently unscrew the current screen and replace it with your desired option, ensuring it is securely fastened.
Image: Close-up view of the Heil Sound PR-20 microphone's grille, highlighting the "PR 20" model designation.
Operating the Microphone
1. Positioning
Due to its unidirectional (cardioid) polar pattern, the PR-20 is most sensitive to sounds directly in front of it and rejects sounds from the sides and rear. Position the microphone directly towards the sound source (e.g., vocalist, instrument amplifier) to achieve optimal sound capture and minimize unwanted background noise or feedback.
2. Gain Staging
Adjust the gain (input level) on your mixer or audio interface. Start with the gain low and gradually increase it until you achieve a strong signal without clipping (distortion). The PR-20 has a relatively high output for a dynamic microphone, so excessive gain may not be necessary.
3. Proximity Effect
Like most directional microphones, the PR-20 exhibits a proximity effect, which is an increase in bass response as the microphone is moved closer to the sound source. Utilize this effect creatively for vocalists or instruments to add warmth or fullness, or maintain a slight distance to achieve a more neutral frequency response.
Maintenance
- Cleaning: Regularly wipe the microphone body with a soft, dry cloth. For the mesh screen, a soft brush can be used to remove debris. Avoid using liquid cleaners directly on the microphone.
- Storage: When not in use, store the PR-20 in its padded carrying case to protect it from dust, moisture, and physical damage.
- Handling: While the PR-20 is built for durability, avoid dropping or subjecting it to harsh impacts, as this can affect its performance.
- Screen Replacement: The mesh screens are interchangeable. If a screen becomes damaged or excessively dirty, it can be replaced with one of the included spares.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No Sound Output |
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| Distorted Sound |
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| Excessive Feedback |
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| Hum or Buzz Noise |
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Specifications
| Feature | Detail |
|---|---|
| Model Name | PR-20 Pro Series |
| Brand | Heil Sound |
| Microphone Form Factor | Microphone only |
| Polar Pattern | Unidirectional (Cardioid) |
| Connectivity Technology | XLR |
| Connector Type | 3 Pin XLR |
| Frequency Response | 40 Hz to 18 KHz |
| Impedance | 600 Ohms balanced |
| Audio Sensitivity | -55 dB @ 1,000 Hz |
| Signal-to-Noise Ratio | 55 dB |
| Material | Alloy Steel, Metal |
| Item Weight | 14.1 ounces (0.88 Pounds) |
| Product Dimensions (L x W x H) | 10.5 x 7 x 4 inches |
| Power Source | Corded Electric (via XLR connection to phantom power or pre-amp) |
| Compatible Devices | Amplifier, Speaker, Audio Interface, Mixing Console |
What's in the Box
- Heil Sound PR-20 Dynamic Microphone
- Three interchangeable mesh screens (Silver, Black, Gold)
- Black acoustical foam windscreen
- Padded carrying case
- Mic stand clip
Warranty and Support
Heil Sound, Ltd. warrants all microphones to the original purchaser for a period of three years (parts) and ninety days (labor) from the date of purchase. For warranty claims or technical support, please contact Heil Sound directly through their official website or authorized service centers. Keep your proof of purchase for warranty validation.
