Specs

4555
1.5” High frequency compression driver
Compression
Drivers
1.5” Compression Drivers
48
Features:
1.5” driver for budget projects
Unique patented design
113dB sensitivity 1W/1m
1 kHz Crossover
Extended high frequency response up to 20 kHz
Very small size and low weight
44.4 mm voice coil
BMS 4555, 60° conical waveguide, SPL 1W / 1m
BMS 4555, 60° conical waveguide, 1W / 1m
BMS 4555, 60° conical waveguide, SPL 10W / 1m
SPECIFICATIONS
Throat diameter 1.5” (38 mm)
Nominal impedance 8 or 16 Ohm
Power capacity (AES) 80 W
Peak Power 450 W
Sensitivity
CD Horn 90°x75°, 1W/1m 113 dB
Plane wave tube, 1mW 118 dB
Maximal SPL (cont.) 132 dB at 80 W
Frequency range 500 – 20000 Hz
Recommended crossover 1000 Hz
Voice coil diameter 1.75” (44.4 mm)
Magnet material Ceramic
Flux density (Tesla) 2.0
Voice coil material Copper Clad Aluminium
Voice coil former Kapton™
Diaphragm material Polyester
MOUNTING INFORMATION
Overall diameter mm 123
Depth mm 52
Net weight kg 2.25
4x M6 holes, 90° on 101.6 mm, 4” diameter
BMS 4555 is a powerful 1.5" professional compression driver
that delivers excellent sonic quality in a small package. 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 minimising the power compression. The BMS 4555 – 1.5"
compression driver is designed for a wide variety of appli-
cations including budget projects requiring 1.5” driver of
high sonic quality. The 4555 offers all the benefits of the
patented BMS compression driver in a 1.5” format, but at
much reduced cost.