- NDC 12-3 WOOFER
Key Features
800 Watt Max Power
75 mm (3 in) voice coil, copper wire
Interleaved sandwich voice coil
Neodymium magnet assembly
Weather protected membrane for
outdoor use
Ventilated voice coil and magnet circuit
for improved heat dissipation
Air gap height = mm 10 Winding height = mm 17
 General Specifications
|
| Nominal Diameter | 12 in - 320 mm | |
|---|---|---|
| Nominal Impendance | 8 Ohm | |
| Nominal Rdc | 6 Ohm | |
| Power handling (AES) (*) | 400 Watt | |
| Max Power | 800 Watt | |
| Minimum Impedance | 7.27 Ohm | |
| Frequency Range | 20 ÷ 3000 Hz | |
| Voice Coil Diameter | 3 in - 75 mm | |
| S.P.L. (1w, 1m) | 97 dB | |
| Nominal Fs | 45 Hz | |
| Flux Density | 1.3 T | |
| Sinusoidal Test Voltage | 15 V |
| Life Test (*) | ||
| Box Volume | 60 liters | |
|---|---|---|
| Input Signal | Pink noise | |
| Band Pass Filter | 20 - 2000 Hz, 12dB/oc | |
| Test duration | 2 hours | |
Diagram
| Frequency Response | Reflex Box 60 dmc - 2.83 V - 1 m | |
|---|---|---|
| Impendance | (lac=10m A) |
Mechanical & Shipping Informations
| Net weight | 4.9 kg | |
|---|---|---|
| Overall Diameter | 315 mm | |
| Overall Depth | 160 mm | |
| Baffle Cut Diameter | 282 mm | |
| Mounting holes number | 8 | |
| Mounting holes diameter | 7 mm | |
| Mounting bolt diameter | 295 mm |
Materials
| Frame Material | Aluminium | |
|---|---|---|
| Voice Coil Former Material | Fiberglass | |
| Voice Coil Wire | Copper | |
| Membrane Material | Doped Paper | |
| Membrane Shape | Exponential | |
| Surround Material | Doped Nomex ® fabric | |
| Surround Shape | Two rolls | |
| Suspension Material | Doped Nomex ® fabric | |
| Magnet Type | Neodymium | |
| Magnet Weight | 480 g |
Thiele-small parameters
| Qms | 16.06 | |
|---|---|---|
| Qes | 0.29 | |
| Qts | 0.28 | |
| Fs | 45.50 Hz | |
| Re | 6.03 Ohm | |
| Mms | 66.77 g | |
| Cms | 0.18 mm/N | |
| Bl | 20.02 T*m | |
| Sd | 535.00 cm2 | |
| Vas | 73.58 liter | |
| u0 | 2.33 % | |
| XMax | 6 mm | |
| Le | 0.73 mH | |
| Rms | 1.19 Kg/s | |
| Efficiency Bandwidth | 158.44 |
Download
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