Mivoc WS 1865 C-4

18" · 4 Ω · 300 W · 95.7 dB · datasheet ↗

Thiele-Small parameters

Nominal size	18"
Impedance	4 Ω
Fs	35 Hz
Qts	0.44
Qes	0.48
Qms	5.4
Vas	270 L
Sd	1307 cm²
Xmax	5 mm
Re	3 Ω
Bl	16 T·m
Mms	185 g
Pe	300 W
Sensitivity	95.7 dB

Alignment hint

EBP	73 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 170.6 L

EBP 50-100: works in either a sealed or ported alignment.

Rules of thumb from T/S parameters only. Verify against a real simulation before cutting wood.

Substitute candidates

Driver	Fs (Hz)	Qts	Vas (L)	Xmax (mm)	Sens (dB)	Fit	Notes	Compare
Turbosound TS-18SW700/8A	35 =	0.433 -0.01	250 -20	7.5 +2.5	97.7 +2	close	8 Ω vs 4 Ω: amp load changes	+
P.Audio 18 S 400	36 +1	0.407 -0.03	256 -14	5 =	97.4 +1.7	close	8 Ω vs 4 Ω: amp load changes	+
B&C 18 PS 100 (prodance)	31.5 -3.5	0.458 +0.02	268 -2	8 +3	96.2 +0.5	close	8 Ω vs 4 Ω: amp load changes	+
DAS Audio 18LX vp	32.3 -2.7	0.4 -0.04	260.7 -9.3	6 +1	95.8 +0.1	close	8 Ω vs 4 Ω: amp load changes	+
PHL Audio 7081	34 -1	0.409 -0.03	267.6 -2.4	7.5 +2.5	97.3 +1.6	close	8 Ω vs 4 Ω: amp load changes	+
P.Audio E18-400S	33 -2	0.498 +0.06	284.4 +14.4	5 =	96.1 +0.4	close	8 Ω vs 4 Ω: amp load changes	+
Monacor SP-46A/500BS	36 +1	0.485 +0.04	250 -20	6 +1	96.6 +0.9	close	8 Ω vs 4 Ω: amp load changes	+
SB Audience 18SW800	33 -2	0.456 +0.02	258.1 -11.9	9.3 +4.3	96.8 +1.1	close	8 Ω vs 4 Ω: amp load changes	+
MC Kenzie C18.500BS	37 +2	0.484 +0.04	252 -18	6.5 +1.5	96.4 +0.7	close	8 Ω vs 4 Ω: amp load changes	+
Selenium WPU1805	34 -1	0.447 +0.01	316 +46	4.3 -0.7	97.1 +1.4	close	8 Ω vs 4 Ω: amp load changes · Xmax 4.3 mm < 5 mm: lower excursion-limited SPL	+

Compare the closest 3 against the WS 1865 C-4 →

Ranked on parameter similarity only (Qts, Fs, Vas, Xmax, sensitivity). Same nominal size required. A hint, not a simulation, model the swap before cutting or buying.

Used in enclosures (0)

No enclosure in the catalog uses this driver yet.