4550

1" High Frequency Compression Driver

Unique patented Design
113 dB sensitivity 1 W / 1 m
800 Hz Crossover
Extended high frequency response up to 20 kHz
Small Size and low Weight
44.4 mm sandwich in- and outside VC
8 or 16 Ohm

BMS 4550 is a powerful 1″ professional compression driver that delivers outstanding sonic quality in a small package. It has an exceptional dynamic range and produces even the most complex music signals with depth and definition.

The BMS exclusive voice coil technology employs a light weight Copper Clad Aluminium wire wound inside and outside of the Kapton™ former to improve the heat dissipation, dramatically increasing the acoustic output and reliability of the driver while minimises the power compression. The BMS 4550 – 1″ compression driver is designed for a wide variety of applications in high quality, high power professional reinforcement systems and stage monitors where low crossover frequency is needed.

Specification

4550 Specification

Throat diameter:	1″ (25.4 mm)
Nominal impendance:	8 or 16 Ohm
Power capacity (AES):	80 W
Peak Power:	450 W

Sensitivity
CD Horn 90° x 75°, 1 W / 1 m:	113 dB
Plane Wave Tube, 1 mW:	117 dB
Maximal SPL (cont.):	132 dB at 80 W
Frequency Range:	500 – 20000 Hz
Recommended Crossover:	800 Hz
Voice Coil Diameter:	1.75″ (44.4 mm)
Magnet Material:	Ferrite
Flux Density (Tesla):	2.0
Voice Coil Material:	Copper Clad Aluminum
Voice Coil Former:	Kapton TM
Diaphragm Material:	Polyester