1" High Frequency Neodymium Compression Driver

4540ND

1" High Frequency Neodymium Compression Driver

Unique Patented Design
Neodymium Magnet Assembly
114 dB Sensitivity 1 W / 1 m
Extended high frequency response up to 30 kHz
Very small Size and low Weight
38 mm Voice Coil
1 3/8″ – 18N Screw or 1″ Flange Adapter
8 or 16 Ohm

BMS 4540ND 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 frequency 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. 4540ND – 1″ compression driver is designed for a wide variety of applications including high level professional reinforcement systems, studio monitors and high-end audio.

Specification

4540ND Specification

Throat diameter:	1″ (25.4 mm)
Nominal impendance:	8 or 16 Ohm
Power capacity (AES):	60 W
Peak Power:	300 W

Sensitivity
CD Horn 90° x 75°, 1 W / 1 m:	114 dB
Plane Wave Tube, 1 mW:	118 dB
Max. SPL (cont.):	132 dB at 60 W
Frequency Range:	1200 – 30000 Hz
Recommended Crossover:	1900 Hz
Voice Coil Diameter:	1.5″ (38 mm)
Magnet Material:	Neodymium
Flux Density (Tesla):	2.2
Voice Coil Material:	Copper Clad Aluminum
Voice Coil Former:	Kapton TM
Diaphragm Material:	Polyester