RS75-4 3" Reference Full-Range Driver 4 Ohm

Incorporating a low-distortion motor system with a copper ring, a copper cap, and an aluminum phase plug, the RS75-4 can outperform "boutique" drivers that cost several times the price.
€36.45
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SIRS754

Data sheet

Impedance
4 Ohm
Driver type
Full-range
Sensitivity
85.2 dB @ 2.83V/1m
Frequency range
170 - 20000 Hz
Resonance frequency (fs)
177 Hz
DC resistance (Re)
3.1 ohms
Mechanical Q (Qms)
5.76
Electrical Q at Fs (Qes)
0.97
Total Q factor (Qts)
0.83
Speaker diameter
3"
Power handling
30 W
Voice coil inductance (L)
0.72 mH @ 1 kHz
Effective mechanical mass incl air load (mms)
1.1g
Effective piston radiating area (Sd)
12 cm²
Force factor (BL)
2.01 Tm
Equivalent volume of compliance (Vas)
0.14 liters
Overall diameter
72 mm
Mounting diameter
54 mm