PHL Audio 5221 SP

15" · 8 Ω · 500 W · 99.5 dB · datasheet ↗

Thiele-Small parameters

Nominal size	15"
Impedance	8 Ω
Fs	41 Hz
Qts	0.329
Qes	0.36
Qms	3.8
Vas	190 L
Sd	892 cm²
Xmax	6.6 mm
Re	5.1 Ω
Bl	18 T·m
Mms	88.5 g
Pe	500 W
Sensitivity	99.5 dB

Alignment hint

EBP	114 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 52.5 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
Beyma 15MW/ND	40 -1	0.331 =	207 +17	6.5 -0.1	99.4 -0.1	close	Xmax 6.5 mm < 6.6 mm: lower excursion-limited SPL	+
Oberton 15NMB35	38.93 -2.07	0.335 +0.01	177.47 -12.53	6.75 +0.15	99.5 =	close		+
Fane SOVEREIGN PRO 15-500	40 -1	0.319 -0.01	192 +2	6 -0.6	99.4 -0.1	close	Xmax 6 mm < 6.6 mm: lower excursion-limited SPL	+
JBL 2226H	40 -1	0.31 -0.02	175.6 -14.4	7 +0.4	99.3 -0.2	close		+
Sica 15 Fe 3 CP	40.2 -0.8	0.33 =	170.4 -19.6	5.5 -1.1	99.4 -0.1	close	Xmax 5.5 mm < 6.6 mm: lower excursion-limited SPL	+
Oberton 15MB500	41.5 +0.5	0.339 +0.01	161.54 -28.46	7.75 +1.15	100 +0.5	close		+
Celestion TF1530E	41 =	0.344 +0.01	181.7 -8.3	8 +1.4	97.1 -2.4	close		+
Eminence KAPPA PRO 15 LFC	37 -4	0.319 -0.01	183.2 -6.8	7.9 +1.3	100.3 +0.8	close	4 Ω vs 8 Ω: amp load changes	+
Fane SOVEREIGN PRO 15-600 LF	40 -1	0.364 +0.03	188 -2	6.9 +0.3	97.9 -1.6	close		+
Beyma 15WRS400	38 -3	0.337 +0.01	205.4 +15.4	6.3 -0.3	98.6 -0.9	close	Xmax 6.3 mm < 6.6 mm: lower excursion-limited SPL	+

Compare the closest 3 against the 5221 SP →

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.