BMS 4591C 2" Middle range Compression Driver,
3,5 " VC,
150 W AES,
123 dB
16 Ohm

Features:
•3.5" sandwich in- and outside voice coil
• Unique patented Design
•Large annular diaphragm
• High efficiency of 35%
•High power handling of 150W (AES)
•Frequency range 200Hz to 9kHz, optimized for human voice
•Specially designed for high output applications
•Ultra low distortion
•16 Ohms

The 4591C is the BMS latest generation 2” mid-range compression driver providing extremely high acoustical output. The driver incorporates a 3,5” voice coil and a large annular ring diaphragm and has been optimized for middle range applications requiring high SPL. Overall improvements to previous models include optimized frequency response as well as increased peak power and reliability.

Specifications:
•Throat diameter: 2" (50.8 mm)
•Nominal impedance: 16 Ohm
•Power capacity (AES): 150 W AES above 400 Hz
•Peak Power: 1500 W peak above 500 Hz
•max. SPL (cont.): 136 dB at 150 W
•Sensitivity 1 W / 1 m: 123 dB
•Frequency Range: 200 - 9000 Hz
•Recommended Crossover: 300 Hz
•Voice Coil Diameter: 3.5" (90 mm)
•Magnet Material: Ferrite
•Flux Density (Tesla): 1.95
•Efficiency: 35 % (300 - 5000 Hz)
•Voice Coil Material: Copper Clad Aluminium
•Voice Coil Former: Kapton TM
•Diaphragm Material: Polyester

Mounting Information:
•Overall Diameter: mm 180 (+/- 3 mm)
•Depth: mm 97
•Net Weight: kg 6
•4 x M6 Holes 90° on 101.6 mm 4" Diameter