NTR12-3018D
Vented cast aluminium heatsink
Compact high flux Dual Magnet Motor design
Specifications
350W
Nominal Power Rating
98dB
Sensitivity
3in
Voice Coil Diameter
Nominal Diameter
305mm/12in
Power Rating
350W
Continuous Power Rating
700W
Sensitivity
98dB
Rated Impedance
8Ω
Frequency Range
50Hz-4000Hz
Voice Coil Diameter
75mm
Chassis Type
Cast aluminium
Magnet Type
Neodymium
Voice Coil Material
Round copper
Former Material
Glass fibre
Cone Material
Kevlar loaded paper
Surround Material
Cloth sealed
Suspension
Single
Xmax
4mm/0.16in
Gap Depth
8mm/0.32in
Voice Coil Winding Width
16mm/0.63in
Small Signal Parameters
Sd
530.93cm2/82.29in2
Fs
58.80Hz
Qms
3.391
Qes
0.325
Qts
0.296
Re
5.99Ω
BI
19.90Tm
Cms
0.13mm/N
Rms
6.32kg/s
Le (at 1kHz)
0.80mH
Mounting Information
Overall Diameter (mm)
318mm
Overall Diameter (in)
12.5in
Overall Depth
137mm/5.39in
Cut-out Diameter
286mm/11.26in
Mounting Slot Dimensions
9.5mm x 6.5mm/0.37in x 0.26in Ø
Number of Mounting Slots
8
Unit Weight
2.6kg/5.7lb
Mounting slot PCD
298mm-304mm/11.7in-12.0in
Packed Dimensions & Weight
Single pack size W x D x H
350mm x 350mm x 185mm/13.8in x 13.8in x 7.3in
Single pack weight
3kg/6.6lb
Multi Pack Qty
60
Multi pack size W x D x H
1080mm x 980mm x 880mm/42.5in x 38.6in x 34.6in
Multi pack weight
178kg/392lb
Diaphragm Material
Cloth sealed
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 is defined as 3dB greater than the AES rating.
Sensitivity measured on axis at 1W, 1m in 2Π anechoic environment.
Xmax is derived from: (voice coil winding width-gap depth)/2.
Small Signal Parameters are measured after unit subjected to pre-conditioning signal.