Radian 5215B NEO

15" · 8 Ω · 625 W · 100.8 dB · datasheet ↗

Thiele-Small parameters

Nominal size	15"
Impedance	8 Ω
Fs	44 Hz
Qts	0.232
Qes	0.25
Qms	3.21
Vas	175 L
Sd	880 cm²
Xmax	5.5 mm
Re	6.3 Ω
Bl	23.8 T·m
Mms	81.2 g
Pe	625 W
Sensitivity	100.8 dB

Alignment hint

EBP	176 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 21.1 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 5030	40 -4	0.236 =	180 +5	5.4 -0.1	100.2 -0.6	close	Xmax 5.4 mm < 5.5 mm: lower excursion-limited SPL	+
RCF MB 15N351	42 -2	0.226 -0.01	191 +16	6 +0.5	101.2 +0.4	close		+
RCF CX 15N351	42 -2	0.226 -0.01	191 +16	5.3 -0.2	101.2 +0.4	close	450 W vs 625 W: lower power handling · Xmax 5.3 mm < 5.5 mm: lower excursion-limited SPL	+
Beyma 15P80/FE	41 -3	0.236 =	159.3 -15.7	6.6 +1.1	100.6 -0.2	close		+
Radian 5215B oem2	42 -2	0.247 +0.01	197 +22	5.5 =	100.6 -0.2	close		+
Radian 5215B oem3	42 -2	0.247 +0.01	197 +22	5.5 =	100.6 -0.2	close		+
Fane CRESCENDO 15MB	42 -2	0.232 =	167 -8	4.3 -1.2	100.6 -0.2	close	300 W vs 625 W: lower power handling · Xmax 4.3 mm < 5.5 mm: lower excursion-limited SPL	+
B&C 15 CXN 88	40 -4	0.254 +0.02	178 +3	6 +0.5	100.4 -0.4	close		+
PHL Audio 5140	38 -6	0.245 +0.01	180 +5	5.7 +0.2	100.6 -0.2	close		+
RCF L 15P801	45 +1	0.237 =	163 -12	4.6 -0.9	101.7 +0.9	close	400 W vs 625 W: lower power handling · Xmax 4.6 mm < 5.5 mm: lower excursion-limited SPL	+

Compare the closest 3 against the 5215B NEO →

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.