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 (H_g)

10mm / 0.39in

VC winding height (H_vc)

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: H_vc-H_g/2