RS180-4 7" Reference Woofer 4 Ohm

The Dayton Audio Reference Series sets a new standard of value in high-performance loudspeaker drivers. Woofer features a black anodized cone, heavy-duty 6-hole cast frame, low-loss rubber surround, solid aluminum phase plug, and gold spring terminals.
€76.45
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SIRS1804

Data sheet

Impedance
4 Ohm
Driver type
Midwoofer
Sensitivity
89.2 dB @ 2.83V/1m
Frequency range
39 - 3600 Hz
Resonance frequency (fs)
38.4 Hz
DC resistance (Re)
3.1 ohms
Mechanical Q (Qms)
2.13
Electrical Q at Fs (Qes)
0.59
Total Q factor (Qts)
0.46
Speaker diameter
7"
Power handling
120 W
Voice coil inductance (L)
0.45 mH @ 1 kHz
Effective mechanical mass incl air load (mms)
17.8g
Effective piston radiating area (Sd)
124.7 cm²
Force factor (BL)
4.71 Tm
Equivalent volume of compliance (Vas)
21.2 liters
Overall diameter
180.5 mm
Mounting diameter
146 mm