WL4Fe/N – Compression driver with wave guide
The Beyma WL4Fe/N is a high-performance compression driver engineered for demanding line array applications. Featuring a 1.75″ (44.4 mm) edgewound aluminium ribbon voice coil and a lightweight PM-4 polymer diaphragm, it delivers exceptional clarity, efficiency, and reliability. Its improved moving assembly design enhances mechanical coupling for superior power handling, offering 70 W AES and 140 W program power above 1.2 kHz. With a sensitivity of 104 dB when coupled to a 90° × 5° horn and a robust ferrite magnet structure, the WL4Fe/N provides powerful, detailed high-frequency reproduction while maintaining a compact 1.8 kg form factor.
Technical Specifications
Throat diameter: 20.5 mm
Rated impedance: 8 Ω
Minimum impedance: 4.71 Ω @ 3.4 kHz
D.C. resistance: 4.3 Ω
Power capacity: 70 W AES above 1.2 kHz
Program power: 140 W above 1.2 kHz
Sensitivity: 104 dB 1W @ 1m coupled to a 90º x 5º horn
Frequency range: 0.7 – 20 kHz
Recommended crossover: 1.2 kHz or higher (12 dB/oct min.)
Voice coil diameter: 44.4 mm
Magnetic assembly weight: 1.28 kg
Bl factor: 6,6 N/A









