Features :
Neodymium magnet assembly
114 dB sensitivity 1 W / 1 m
Extended high frequency response up to 30 kHz
Very small size and low weight
38mm voice coil
1"3/8 - 18N screw or 1" flange adapter
BMS 4540 ND is a powerful 1" professional compression driver that delivers superb sonic quality in a very small package. The unique BMS annular diaphragm together with the high energy neodymium magnet achieve very high sensitivity and linear frequencey response up to 30 kHz. The sound of 4540ND is extremely transparent and detailed, it has an exceptional dynamic range and produces even the most complex music signals with depth and definition. 4540 ND - 1" compression driver is designed for a wide variety of applications including high level professional reinforcement systems, studio monitors and high-end audio.
SPECIFICATIONS
Throat diameter 1" (25,4 mm)
Nominal impedance 8 or 16 Ohm
Power capacity (AES) 60 W
Peak Power 300 W
Sensitivity
CD Horn, 1W/1m 114 dB
Plane wave tube, 1mW 118 dB
Maximal SPL (cont.) 132 dB at 60 W
Frequency range 1200 - 30000 Hz
Recommend crossover 1900 Hz
Voice coil diameter 1,5" (38 mm)
Magnetic material Neodymium
Flux density 2,2
Voice coil material Cooper Clad Aluminium
Voice coil former Kapton ™
Diaphragm material Polyester
Mounting Information
Overall diameter 72mm (+/- 0,1 mm)
Depth 45mm
Net weight 0.53kg
1" 3/8 - 18N screw
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