LaVoce WAF154.03

15" · 8 Ω · 850 W · 98.6 dB · datasheet ↗

Thiele-Small parameters

Nominal size	15"
Impedance	8 Ω
Fs	38 Hz
Qts	0.29
Qes	0.3
Qms	8.6
Vas	188 L
Sd	881 cm²
Xmax	5.2 mm
Re	6 Ω
Bl	22 T·m
Mms	101.5 g
Pe	850 W
Sensitivity	98.6 dB

Alignment hint

EBP	127 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 38 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
PHL Audio 5100	39 +1	0.297 +0.01	180 -8	5.6 +0.4	98.8 +0.2	close	400 W vs 850 W: lower power handling	+
RCF L 15L601	38 =	0.305 +0.02	190 +2	5 -0.2	97.9 -0.7	close	600 W vs 850 W: lower power handling · Xmax 5 mm < 5.2 mm: lower excursion-limited SPL	+
Audax LFP504	36 -2	0.282 -0.01	193 +5	5.5 +0.3	98.2 -0.4	close	350 W vs 850 W: lower power handling	+
Audax PR38ST350	36 -2	0.28 -0.01	193 +5	5.5 +0.3	98.3 -0.3	close	350 W vs 850 W: lower power handling	+
Audax PR38XT350	36 -2	0.28 -0.01	193 +5	5.5 +0.3	98.3 -0.3	close	350 W vs 850 W: lower power handling	+
Radian 5215B	39 +1	0.313 +0.02	192.4 +4.4	5.5 +0.3	98.5 -0.1	close	625 W vs 850 W: lower power handling	+
Audax PR38ST250	38 =	0.311 +0.02	193 +5	4.9 -0.3	98.4 -0.2	close	250 W vs 850 W: lower power handling · Xmax 4.9 mm < 5.2 mm: lower excursion-limited SPL	+
Radian 5215 B-8	38.7 +0.7	0.316 +0.03	189.7 +1.7	5.5 +0.3	98.2 -0.4	close	625 W vs 850 W: lower power handling	+
B&C 15CLA76	40 +2	0.3 +0.01	176 -12	5.5 +0.3	99 +0.4	close	350 W vs 850 W: lower power handling	+
Precision Devices PD.153C01	39 +1	0.27 -0.02	195 +7	5.7 +0.5	98.1 -0.5	close	400 W vs 850 W: lower power handling	+

Compare the closest 3 against the WAF154.03 →

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.