Standard
1.75” Paper Cone Fullrange
04A18EHC18225F
Features
1.75”, Steel Frame
0.8” PESVW Voice Coil, Kapton Former
Paper Cone, IIR Surround
Dual Neodymium Magnet Motor System
Parameters
Size
1.75 Inch
Fs
170 Hz
Re
3.32 Ohms
Sensitivity
81 dB
Quality Factor
0.46 Qts
Rated Power
2 W
This is a 1.75 inch 4 ohm driver, it is a Fullrange features 0.8 inch voice coil with PESVW. In term of suspension system, cone is consisted by Paper Cone body with IIR surround and spider is consisted by NC. In term of magnet motor system, magnet is consisted by Neodymium material. It can be used on Bluetooth speakers model.
Family
Range
Characteristics
| T-S Parameters | |
|---|---|
| Resonance frequency [fs] | 172 Hz |
| Mechanical Q factor [Qms] | 7.737 |
| Electrical Q factor [Qes] | 0.489 |
| Total Q factor [Qts] | 0.46 |
| Force factor [Bl] | 3.117 Tm |
| Mechanical resistance [Rms] | 0.185 kg/s |
| Moving mass [Mms] | 1.323 g |
| Compliance [Cms] | 0.647 mm/N |
| Effective diaph. diameter [D] | 33.1 mm |
| Effective piston area [Sd] | 8.6 cm² |
| Equivalent volume [Vas] | 0.0678 l |
| Sensitivity (2.83V/1m) | 81 dB |
| Ratio Bl/√Re | 1.7106 N/√W |
| Ratio fs/Qts | 373.91 Hz |
| Electrical Data | |
|---|---|
| Nominal impedance [Zn] | 4 Ω |
| Minimum impedance [Zmin] | 3.692 Ω |
| Maximum impedance [Zo] | 37.6 Ω |
| DC resistance [Re] | 3.32 Ω |
| Voice coil inductance [Le] | 0.12 mH |
| Power Handling | |
|---|---|
| 100h RMS noise test (IEC 18.4) | 2 W |
| Long-term max power (IEC 18.2) | - W |
| Voice Coil & Magnet Data | |
|---|---|
| Voice coil diameter | 19.4 mm |
| Voice coil height | 7 mm |
| Voice coil layers | 2 |
| Height of gap | 3 mm |
| Linear excursion | ± 2 mm |
| Max mech. excursion | ± - mm |
| Unit weight | 0.069 kg |
