PHL Audio 4511

12" · 8 Ω · 300 W · 96.2 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	48 Hz
Qts	0.406
Qes	0.45
Qms	4.12
Vas	74.1 L
Sd	539 cm²
Xmax	5.4 mm
Re	5.5 Ω
Bl	14.9 T·m
Mms	60.4 g
Pe	300 W
Sensitivity	96.2 dB

Alignment hint

EBP	107 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 36.4 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
Sica 12 PF 3	47 -1	0.39 -0.02	76.5 +2.4	5.5 +0.1	96.4 +0.2	close		+
PHL Audio 4531 v2023	46 -2	0.399 -0.01	71.9 -2.2	5.6 +0.2	95.9 -0.3	close		+
P.Audio SN-12LF	48 =	0.399 -0.01	67.9 -6.2	7.2 +1.8	96 -0.2	close		+
Faital PRO 12PR300	50 +2	0.41 =	73.9 -0.2	4.92 -0.48	97 +0.8	close	4 Ω vs 8 Ω: amp load changes · Xmax 4.92 mm < 5.4 mm: lower excursion-limited SPL	+
Fane SOVEREIGN 12-300 v2024	47 -1	0.4 -0.01	80 +5.9	5 -0.4	96.3 +0.1	close	Xmax 5 mm < 5.4 mm: lower excursion-limited SPL	+
Jensen SMOOTH BS 12N/250A	47 -1	0.425 +0.02	81.3 +7.2	5.5 +0.1	96.4 +0.2	close		+
Celestion FTX1225 v2024	47.3 -0.7	0.396 -0.01	84.6 +10.5	5.9 +0.5	96.8 +0.6	close		+
Faital PRO 12FH500	48 =	0.37 -0.04	77.4 +3.3	7.25 +1.85	96 -0.2	close	16 Ω vs 8 Ω: amp load changes	+
Radian CRS1230	48 =	0.464 +0.06	76 +1.9	5.5 +0.1	95.8 -0.4	close		+
SICA 12 BP 2.5 CS	46.8 -1.2	0.425 +0.02	81.3 +7.2	5 -0.4	96.4 +0.2	close	200 W vs 300 W: lower power handling · Xmax 5 mm < 5.4 mm: lower excursion-limited SPL	+

Compare the closest 3 against the 4511 →

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.