LaVoce SAN214.50LD vp

21.5" · 8 Ω · 1700 W · 98.4 dB · datasheet ↗

Thiele-Small parameters

Nominal size	21.5"
Impedance	8 Ω
Fs	30 Hz
Qts	0.223
Qes	0.23
Qms	7
Vas	250 L
Sd	1661 cm²
Xmax	7.2 mm
Re	5.3 Ω
Bl	43.5 T·m
Mms	435.4 g
Pe	1700 W
Sensitivity	98.4 dB

Alignment hint

EBP	130 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 27.6 L

EBP > 100: favours a ported (bass-reflex) 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
B&C 21 DS 115	30 =	0.234 +0.01	269 +19	7.6 +0.4	98.7 +0.3	close		+
B&C 21 SW 150	29 -1	0.261 +0.04	254 +4	7.5 +0.3	99.4 +1	close	4 Ω vs 8 Ω: amp load changes	+
18 Sound 21NLW9000C	29 -1	0.248 +0.02	257 +7	8.1 +0.9	100.5 +2.1	close	4 Ω vs 8 Ω: amp load changes	+
Dayton Audio PSS545HE-4 VORTEX	28.8 -1.2	0.27 +0.05	212.1 -37.9	8.6 +1.4	97.8 -0.6	usable	4 Ω vs 8 Ω: amp load changes	+
B&C 21 DS 115 - 4	30 =	0.196 -0.03	274 +24	6.9 -0.3	103.3 +4.9	usable	4 Ω vs 8 Ω: amp load changes · Xmax 6.9 mm < 7.2 mm: lower excursion-limited SPL	+
Beyma 21QLEX1600/Fe	30 =	0.281 +0.06	309 +59	8.4 +1.2	98.1 -0.3	usable		+
PD PDN 2151	31.4 +1.4	0.276 +0.05	303.4 +53.4	6.7 -0.5	99 +0.6	usable	1000 W vs 1700 W: lower power handling · Xmax 6.7 mm < 7.2 mm: lower excursion-limited SPL	+
Precision Devices PDN 2151	31.4 +1.4	0.276 +0.05	303.4 +53.4	6.7 -0.5	99 +0.6	usable	1000 W vs 1700 W: lower power handling · Xmax 6.7 mm < 7.2 mm: lower excursion-limited SPL	+
18 Sound 21LW400	28 -2	0.234 +0.01	385 +135	9.3 +2.1	99.5 +1.1	usable		+
RCF LF 21N451 v2017	30 =	0.259 +0.04	375 +125	8.6 +1.4	99.3 +0.9	usable		+

Compare the closest 3 against the SAN214.50LD vp →

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.