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Professional PA Speakers
of the CELESTION NTR series with neodymium drives represent where we are today with PA speaker technology. Developed with the aid of analysis methods and state-of-the-art computer simulation, these speakers provide an excellent radiation with lowest harmonic distortions at a very low weight.
Professional PA bass speaker, 450 W, 8 Ω
  • 38 cm (15") speaker with high-performance neodymium drive system
  • Deformation-resistant, kevlar-reinforced and low-resonance paper cone
  • 75 mm (3") heat-resistant voice coil
  • Especially developed thermal management of the drive system for preventing thermal compression and overheating
  • Multi-roll rubber surround for an excellent linearity and progressive control in case of excessive cone excursion
  • Very low harmonic distortion (THD)
  • Diecast aluminium basket and a low weight of 4 kg only
Impedance (Z) 8 Ω
Transmission method -
Frequency range f3-3000 Hz
Resonant frequency (fs) 34 Hz
Rec. crossov. frequ. (fmax.) (12 dB/oct.) -
Power rating (RMS) 450 W
Peak music power output (MAX) 900 W
Sensitivity 98 dB/W/m
Max. rated SPL -
Max. voltage -
Radiation angle, horizontal -
Radiation angle, vertical -
Suspension compl. (Cms) 0,218 mm/N
Moving mass (Mms) 97,2 g
Mech. Q factor (Qms) 3,85
Electr. Q factor (Qes) 0,262
Total Q factor (Qts) 0,25
Equivalent volume (Vas) 226 l
DC resistance (Re) 5,58 Ω
Force factor (BxL) 21,24 Tm
Voice coil induct. (Le) 1,2 mH
Voice coil diameter Ø75 mm
Voice coil former glass fibre
Linear excursion (XMAX) ±5,0 mm
Eff. cone area (Sd) 860 cm2
Magnet weight -
Magnet diameter -
Mounting cutout Ø351 mm
Mounting depth 150 mm
Mounting hole diameter Ø367-373 mm
Hole spacing X-axis -
Hole spacing Y-axis -
Dimensions Ø 386 mm x 162 mm
Outside diameter Ø386 mm
Width Ø386 mm
Height -
Depth 162 mm
Protective class -
Admiss. ambient temp. 0-40 °C
Weight 3,98 kg
Packing unit 1
Type of speaker 15 \"