NTR08-2011D
8-inch cast aluminium chassis, neodymium magnet mid/bass driver
- Coated Kevlar-loaded cone for enhanced weather resistance
- Vented cast aluminium heatsink
- Full gap flux saturation for increased Bl and reduced distortion
Specifications
400W
Continuous power rating
92dB
Sensitivity
2in
Voice coil diameter
Nominal diameter
203mm / 8in
Power rating
200W
Continuous power rating
400W
Rated impedance
8Ω
Sensitivity
92dB
Frequency range
70-6000Hz
Chassis type
Cast aluminium
Magnet type
Neodymium
Voice coil diameter
50mm / 2in
Voice coil material
Round copper
Former material
Polyimide
Cone material
Kevlar loaded paper (weather-resistant)
Surround material
Cloth-sealed
Suspension
Single
Gap height (Hg)
8mm / 0.31in
VC winding height (Hvc)
16mm / 0.63in
Additional impedances
16Ω
Parameters
Sd
226.98cm2 / 35.18in2
Fs
84.80Hz
Mms
24.91g / 0.88oz
Qms
2.34
Qes
0.535
Qts
0.436
Re
5.79Ω
Vas
10.31l / 0.37ft3
BI
11.98Tm
Cms
0.14mm/N
Rms
5.66kg/s
Le (at 1kHz)
0.59mH
Xmax
6mm / 0.24in
Mounting Information
Overall diameter
225mm / 8.8in (octagonal profile)
Overall depth
100mm / 4.2in
Cut-out diameter
100mm / 4.16in
Mounting hole dimensions
6.5mm / 0.26in Ø
Number of mounting holes
8
Mounting hole PCD
210mm / 8.3in
Unit weight
1.5kg / 3.3lb
Packed Dimensions & Weight
Single pack size W x D x H
235mm x 235mm x 140mm / 9.2in x 9.2in x 5.5in
Single pack weight
1.75kg / 3.85lb
Multi pack qty
8
Multi pack size W x D x H
450mm x 380mm x 260mm / 17.7in x 15.0in x 10.2in
Multi pack weight
16kg / 35.2lb
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: 0.5*(Hvc-Hg) + 0.25*Hg
