- NDPA-3.5 EXTENDED RANGE
Key Features
70 Watt Max Power
0.8 in - 20 mm voice coil, copper wire
Rubber sorround
Neodymium magnet assembly
PA systems application
16 Ohm available
Air gap height = mm 4 Winding height= mm 6
 General Specifications
|
| Nominal Diameter | 3.5 in - 87 mm | |
|---|---|---|
| Nominal Impendance | 8 Ohm | |
| Nominal Rdc | 7 Ohm | |
| Power handling (AES) (*) | 35 Watt | |
| Max Power | 70 Watt | |
| Minimum Impedance | 8.21 Ohm | |
| Frequency Range | 100 ÷ 15000 Hz | |
| Voice Coil Diameter | 0.8 in - 20 mm | |
| S.P.L. (1w, 1m) | 86 dB | |
| Nominal Fs | 110 Hz | |
| Flux Density | 1.35 T | |
| Sinusoidal Test Voltage | 9 V |
| Life Test (*) | ||
| Box Volume | 3 liters | |
|---|---|---|
| Input Signal | Pink noise | |
| Band Pass Filter | 100 - 15000 Hz, 12 dB/oct | |
| Test duration | 2 hours | |
Diagram
| Frequency Response | IEC baffle | |
|---|---|---|
| Impendance | (Ias=10m A) |
Mechanical & Shipping Informations
| Net weight | 0.27 Kg | |
|---|---|---|
| Overall Diameter | 87.5*87.5 mm | |
| Overall Depth | 44 mm | |
| Baffle Cut Diameter | 76 mm | |
| Mounting holes number | 4 | |
| Mounting holes diameter | 4.7 mm | |
| Mounting bolt diameter | 100 mm |
Materials
| Frame Material | Steel | |
|---|---|---|
| Voice Coil Former Material | Aluminium | |
| Voice Coil Wire | Copper | |
| Cone Material | Paper | |
| Cone Shape | Exponential | |
| Surround Material | Rubber | |
| Surround Shape | Half roll | |
| Suspension Material | Doped Nomex fabric | |
| Magnet Type | Neodymium | |
| Magnet Weight | 36 g |
Thiele-small parameters
| Qms | 2.00 | |
|---|---|---|
| Qes | 0.66 | |
| Qts | 0.50 | |
| Fs | 105.40 Hz | |
| Re | 7.18 Ohm | |
| Mms | 3.03 g | |
| Cms | 0.75 mm/N | |
| Bl | 4.67 T*m | |
| Sd | 35.26 cm2 | |
| Vas | 1.31 liter | |
| u0 | 0.22 % | |
| XMax | 2 mm | |
| Le | 0.33 mH | |
| Rms | 1.00 Kg/s | |
| Efficiency Bandwidth | 159.55 |
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