04A18EHC18225F
04A18EHC18225F
Standard
1.75" Paper Cone Fullrange

04A18EHC18225F

Feature
1.75", Steel Frame
0.8" PESVW Voice Coil, Kapton Former
Paper Cone, IIR Surround
Dual Neodymium Magnet Motor System
Waterproof Driver
Size
1.75 Inch
Fs
170 Hz
Re
4 Ohms
Sensitivity
81 dB
Quality Factor
0.46 Qts
Rated Power
2 W
  • Description
  • Measure Chart
  • Specification
  • Mechanical Drawing
SPEC SHEET

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

 

04A18EHC18225F

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