BMS BMS4512NDH 4512 ND – 4″ Neodymium high-frequency Driver 80 W 16 Ohm

• Unique Planar Wave Design 
• Cost effective, high efficiency Neodymium magnet assembly
• Perfect acoustical coupling of individual units to create virtually continuous line source
• 112 dB sensitivity 1 W / 1 m
• 1 kHz Crossover
• Extended high frequency response up to 20 kHz

The BMS 4512 ND Planar wave driver radiates a coherent planar wave front form a rectangular piston without internal diffraction for superior dispertion control and high fidelity sound. This distinctive new transducer was engineered to work with 4-inch (4" x 1“) rectangular throat waveguides providing extremely high sensitivity.

The 4512 ND is optimised for 10° vertical dispertion and allows a horizontal coverage from 60° to 120° depending on the waveguide used. The unique design of the 4512 ND planar wave driver allows perfect acoustical coupling of individual units to create virtually continuous line source.

The BMS annular diaphragm together with the cost effective, high efficiency Neodymium magnet assembly offers an economical solution for high performance line arrays.

 The ring diaphragm works similar as a wound 140 mm long ribbon diaphragm providing linear frequency response up tp 20 kHz. The unique planar wave phase plug provide a coherent planar wave front without internal diffraction.

Driver 2“, 110W, 107.5dB, 0.5-18kHz, 4.1kg

Driver 1.5“, 140W, 109dB, 0.5-20kHz,
διάφραγμα τιτανίου, 3.4kg

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.

Compression Driver υψηλών συχνοτήτων
Νεοδυμίου με 2" στόμιο εξόδου,160W continious
program, 400-16000 Hz,108,5 dB/w/m