Description
Description
The Beyma 4FR40ND is a compact 4-inch neodymium full-range loudspeaker designed for extended bandwidth and low-distortion reproduction from a small mounting location. Beyma developed it for beam-steering columns, portable array systems, compact loudspeakers, motorcycle audio and other installations where clear midrange and high-frequency output are required without a large transducer.
The driver uses a paper cone, Santoprene surround, pressed-steel basket and neodymium motor. It is sold individually and should be installed with suitable enclosure loading and high-pass protection for the intended application.
Specifications
| Model | 4FR40ND |
|---|---|
| Nominal diameter | 4 inches |
| Rated impedance | 8 ohms |
| Minimum impedance | 7.2 ohms |
| AES power capacity | 40 watts |
| Program power | 80 watts |
| Sensitivity | 88 dB, 1 W / 1 m |
| Frequency range | 100 Hz–20,000 Hz |
| Voice-coil diameter | 20.3 mm / 0.8 inch |
| BL factor | 4.7 N/A |
| Moving mass | 0.0045 kg |
| Voice-coil length | 7.7 mm |
| Air-gap height | 4 mm |
| Magnet | Neodymium |
| Sold as | Single speaker |
Features
- Extended full-range response from a compact 4-inch frame.
- Low-distortion design for clear vocal and instrumental reproduction.
- Paper cone with Santoprene surround.
- Pressed-steel basket provides a rigid mounting structure.
- Neodymium motor reduces weight compared with a conventional ferrite design.
- Suitable for beam-steering columns, portable arrays and compact loudspeaker systems.
- Use appropriate high-pass filtering and confirm mounting dimensions before installation.