BMS BMS4545NDL 4545 ND – 1″ Neodymium high-frequency Driver 80 W 8 Ohm

1" High Frequency Neodymium Compression Driver

BMS4545NDL 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 cost effective, high energy Neodymium magnet assembly offers an economical solution for a wide variety of high level professional reinforcement system applications.

BMS4545NDL achieves very high sensitivity and linear frequency response up to 20 kHz. The sound of BMS4545ND is extremely transparent and detailed, it has an exceptional dynamic range and produces even the most complex music signals with depth and definition.

• Type: Compression Driver
• Throat Diameter: 1“
• Throat Diameter: 25,4 mm
• Voice Coil Diameter: 1,75“
• Voice Coil Diameter: 44,4 mm
• Overall Diameter: 85 ± 0,1 mm
• Bolt Circle Diameter: 57,15 mm
• Depth: 48 mm
• Nominal Impedance: 8 ohms
• Nominal Power Handling: 80 W
• Maximum Power Handling: 400 W
• Sensitivity (with Horn 1W/1m): 113 dB
• Frequency Range: 500 - 20000 Hz
• Recommended Crossover Frequency: 1300 Hz
• Voice Coil Former: Kapton
• Diaphram Material: Polyester
• Magnet Material: Ceramic
• Mounting Thread (screw on): 1 3/8" - 18N screw

1” high frequency compression driver, titanium
diaphragm, flat aluminium wire voice coil, low distortion,
extremely good response from 1.5 kHz. to 18 kHz.

Specifications1
Throat Diameter 25 mm. (1 in.)
Nominal Impedance 8 Ω
Minimum Impedance 7.6 Ω
Power Handling
(1500 –20000 Hz)
Nominal2 60 W
Continuous Program3 120 W
Sensitivity (1W/1m)4 106 dB
Frequency Range 1 – 18 kHz
Recommended Crossover5 1.5 kHz
Voice Coil Diameter 44 mm. (1.7 in.)
Winding Material Aluminium
Inductance 0.11 mH
Diaphragm Material Titanium
Flux Density 1.7 T
Also available in 16 Ω, data upon request

Mounting and Shipping Informations
Two M6 holes 180° on 76 mm. (3 in.) diameter
Three M6 holes 120° on 57 mm. (2.2 in.) diameter
Overall Diameter 134 mm. (5.3 in.)
Depth 68 mm. (2.7 in.)
Net Weight (1 unit) 2.9 Kg. (6.4 lb.)
Shipping Weight (4 units) 12.5 Kg. (27.5 lb.)
Shipping Box (4 units) 300x160x180 mm.
(12x6.3x7.1 in.)
1 Driver mounted on B&C ME 45 horn.
2 2 hours test made with continuous pink noise signal (6 dB crest factor) within
the specified range . Power calculated on rated minimum impedance.
3 Power on Continuous Program is defined as 3 dB greater than the Nominal
rating.
4 Applied RMS Voltage is set to 2.83V for 8 ohms and 4V for 16 ohms Nominal
Impedance. Average SPL from 1000 to 18000 Hz.
5 12 dB/oct. or higher slope high-pass filter.