NTR15-3018E (Legacy)
15-inch cast aluminium chassis, neodymium magnet LF driver
Legacy Product
- Coated glass-loaded cone for enhanced weather resistance
- Vented magnet assembly for more efficient cooling
- Compact high flux Dual Magnet Motor design
Specifications
15in
Diameter
900W
Continuous power rating
8Ω
Rated impedance
98dB
Sensitivity
Nominal diameter
381mm / 15in
Power rating
450W
Continuous power rating
900W
Rated impedance
8Ω
Sensitivity
98dB
Frequency range
30-3000Hz
Chassis type
Cast aluminium
Magnet type
Neodymium
Voice coil diameter
75mm / 3in
Voice coil material
Edgewound copper
Former material
Glass fibre
Cone material
Glass loaded paper (weather-resistant)
Surround material
Cloth-sealed
Suspension
Single
Gap height (Hg)
10mm / 0.39in
VC winding height (Hvc)
20mm / 0.79in
Parameters
Sd
855.30cm2 / 132.57in2
Fs
34.90Hz
Mms
104.12g / 3.67oz
Qms
4.863
Qes
0.301
Qts
0.283
Re
5.85Ω
Vas
207.27I / 7.32ft3
BI
21.07Tm
Cms
0.20mm/N
Rms
4.69kg/s
Le (at 1kHz)
1.18mH
Xmax
5mm / 0.2in
Mounting Information
Overall diameter
386mm / 15.2in
Overall depth
162mm / 6.4in
Cut-out diameter
351mm / 13.8in
Mounting hole dimensions
10x7mm / 0.4x0.27in
Number of mounting holes
8
Mounting hole PCD
367-373mm / 14.4-14.7in
Unit weight
4kg / 8.8lb
Packed Dimensions & Weight
Single pack size W x D x H
435mm x 435mm x 200mm / 17.1in x 17.1in x 7.9in
Single pack weight
5.0kg / 11lb
Multi pack qty
36
Multi pack size W x D x H
1200mm x 1000mm x 980mm / 47.2in x 39.4in x 38.6in
Multi pack weight
166kg / 365lb
Frequency Response and Impedance Curves
Topmost curve: Frequency response on axis | Secondary curve: Frequency response at 45° off axis
Power rating: Tested for two hours using a continuous, band-limited pink noise signal as per AES standard. Power calculated on minimum impedance. Loudspeaker tested in free air.
Continuous power rating: Defined as 3dB greater than the AES rating.
Sensitivity: Measured on axis at 1W, 1m in 2π anechoic environment.
Parameters: Measured after unit subjected to pre-conditioning signal.
Xmax: Hvc-Hg/2
