Audax LFP502

12" · 8 Ω · 150 W · 95.4 dB

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	24 Hz
Qts	0.208
Qes	0.23
Qms	2.17
Vas	267 L
Sd	530 cm²
Xmax	3.5 mm
Re	5.8 Ω
Bl	15.7 T·m
Mms	64.9 g
Pe	150 W
Sensitivity	95.4 dB

Alignment hint

EBP	104 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 25.3 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
Audax PR33SM150	24 =	0.208 =	267 =	3.5 =	95.4 =	close		+
Great Plains Audio 414-8B (16B)	25.6 +1.6	0.22 +0.01	263.1 -3.9	4 +0.5	95.3 -0.1	close		+
Pioneer A30GU30-55D	24 =	0.209 =	277 +10	3.1 -0.4	97.9 +2.5	close	4 Ω vs 8 Ω: amp load changes · Xmax 3.1 mm < 3.5 mm: lower excursion-limited SPL	+
Monacor SPH-300TC v1	23 -1	0.198 -0.01	315 +48	4 +0.5	95.4 =	close		+
Focal AUDIOM 12VX	23.5 -0.5	0.202 -0.01	238 -29	6 +2.5	94.5 -0.9	close		+
SEAS 33F-WKA	22 -2	0.209 =	310 +43	5 +1.5	95 -0.4	close	70 W vs 150 W: lower power handling	+
Tannoy 3128	25 +1	0.195 -0.01	276 +9	3 -0.5	96.5 +1.1	close	80 W vs 150 W: lower power handling · Xmax 3 mm < 3.5 mm: lower excursion-limited SPL	+
Tannoy HPD 315A	25 +1	0.195 -0.01	276 +9	3 -0.5	96.5 +1.1	close	60 W vs 150 W: lower power handling · Xmax 3 mm < 3.5 mm: lower excursion-limited SPL	+
Audax PR330M0 v2014	26 +2	0.203 =	208 -59	4 +0.5	95.6 +0.2	close		+
Monacor SPH-300TC vp 1 seule bobine	23 -1	0.239 +0.03	290 +23	4 +0.5	94.3 -1.1	close		+

Compare the closest 3 against the LFP502 →

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.