Data Sheet

4512ND
4"Neodymiumplanarwavedriver
Features:
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
SPECIFICATIONS
Throatdiameter
4"x1"(101.6x25.4mm)
rectangularpiston
NominalImpendance 8or16Ohm
Powercapacity(AES) 80W
PeakPower 450W
SENSITIVITY MOUNTINGINFORMATION
CDHorn120°x10° 112dB1W/1m Overalldiameter 107x85x119mm
MaximalSPL(cont.) 133dBat80W Netweight 0.870kg
Frequencyrange 500‐20000H
z
4xM5holes,90°on76.2x50.8mm(3"x2"
)
Recommendedcrossove
r
1000Hz
Voicecoildiamete
r
1.75"(44.4mm)
Magnetmaterial Neodymium
BMSSpeakersGmbH
Fluxdensity 2.2Tesla Germany
Voicecoilmaterial CopperCladAluminium Tel.:+495118793898
Voicecoilformer KaptonTM [e-mail]
Diaphragmmaterial Polyester www.bmsspeakers.com
The BMS 4512ND Planar wave driver radiates a coherent planar wave front form a rectangular piston without
internal diffraction for superior dispersion 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 4512ND is optimized for 10° vertical dispersion and allows a horizontal coverage from 60° to 120°
depending on the waveguide used. The unique design of the 4512ND 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 to 20 kHz. The unique planar wave phase plug provides a coherent planar wave front without
internaldiffraction.