TN1225
12-inch, pressed steel chassis, neodymium magnet bass / mid driver
Legacy Product
- Compact high flux Dual Magnet Motor design
- Vented cast aluminium heatsink
Specifications
12in
Diameter
500W
Continuous power rating
8Ω
Rated impedance
99dB
Sensitivity
Nominal diameter
305mm / 12in
Power rating
250W
Continuous power rating
500W
EIA power rating
400W
Rated impedance
8Ω
Sensitivity
99dB
Frequency range
50-4000Hz
Chassis type
Pressed steel
Magnet type
Neodymium
Voice coil diameter
64mm / 2.5in
Voice coil material
Round copper
Former material
Polyimide
Cone material
Kevlar loaded paper
Surround material
Cloth-sealed
Suspension
Single
Gap height (Hg)
8mm / 0.32in
VC winding height (Hvc)
13mm / 0.51in
Parameters
Sd
530.93cm2 / 82.29ft3
Fs
61.40Hz
Mms
42.12g / 1.49oz
Qms
3.118
Qes
0.339
Qts
0.306
Re
5.20Ω
Vas
63.69I / 2.25ft3
BI
15.79Tm
Cms
0.16mm/N
Rms
5.21kg/s
Le (at 1kHz)
0.65mH
Xmax
2.5mm / 0.1in
Mounting Information
Overall diameter
309mm / 12.17in
Overall depth
132mm / 5.2in
Cut-out diameter
283mm / 11.14in
Mounting hole dimensions
7.9mm / 0.31in Ø
Number of mounting holes
4
Mounting hole PCD
297mm / 11.69in
Unit weight
2.0kg / 4.4lb
Packed Dimensions & Weight
Single pack size W x D x H
330mm x 330mm x 150mm / 13.0in x 13.0in x 5.9in
Single pack weight
2.4kg / 5.3lb
Multi pack qty
60
Multi pack size W x D x H
1008mm x 980mm x 860mm / 39.7in x 38.6in x 33.9in
Multi pack weight
150kg / 330lb
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
