LaVoce WAF123.03

12" · 8 Ω · 500 W · 99 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	50 Hz
Qts	0.287
Qes	0.3
Qms	6.6
Vas	70 L
Sd	556 cm²
Xmax	5.5 mm
Re	4.6 Ω
Bl	17.4 T·m
Mms	62.7 g
Pe	500 W
Sensitivity	99 dB

Alignment hint

EBP	167 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 13.8 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
RCF MB 12X301	50 =	0.29 =	70 =	5.9 +0.4	98.3 -0.7	close		+
Faital PRO 12FH520	50 =	0.29 =	73.7 +3.7	7.25 +1.75	98 -1	close		+
B&C 12NDL76	50 =	0.27 -0.02	69 -1	7 +1.5	100 +1	close	16 Ω vs 8 Ω: amp load changes	+
18 Sound 12ND830	55 +5	0.28 -0.01	72 +2	6.5 +1	99 =	close		+
LaVoce WSN122.50-4	49 -1	0.29 =	64.43 -5.57	5.3 -0.2	97 -2	close	4 Ω vs 8 Ω: amp load changes · 250 W vs 500 W: lower power handling · Xmax 5.3 mm < 5.5 mm: lower excursion-limited SPL	+
18 Sound 12W750	49 -1	0.28 -0.01	73 +3	8 +2.5	97 -2	close		+
Master Audio HPLSN12-500	52 +2	0.283 =	65 -5	5 -0.5	97.7 -1.3	close	Xmax 5 mm < 5.5 mm: lower excursion-limited SPL	+
Ciare NDC 12-3	45.5 -4.5	0.285 =	73.6 +3.6	5.4 -0.1	97 -2	close	Xmax 5.4 mm < 5.5 mm: lower excursion-limited SPL	+
Faital PRO 12FH520	50 =	0.27 -0.02	65.5 -4.5	7 +1.5	97 -2	close	4 Ω vs 8 Ω: amp load changes	+
Fane CRESCENDO 12MB	50 =	0.295 +0.01	67 -3	4.3 -1.2	97.8 -1.2	close	300 W vs 500 W: lower power handling · Xmax 4.3 mm < 5.5 mm: lower excursion-limited SPL	+

Compare the closest 3 against the WAF123.03 →

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.