Monacor SP-38A/500BS

15" · 8 Ω · 500 W · 96.7 dB

Thiele-Small parameters

Nominal size	15"
Impedance	8 Ω
Fs	37 Hz
Qts	0.35
Qes	0.38
Qms	4.37
Vas	168 L
Sd	855 cm²
Xmax	6 mm
Re	6 Ω
Bl	20.4 T·m
Mms	112.9 g
Pe	500 W
Sensitivity	96.7 dB

Alignment hint

EBP	97 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 54.5 L

EBP 50-100: works in either a sealed or ported 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
Conrad CPA15-300	36.9 -0.1	0.357 +0.01	161.6 -6.4	5.7 -0.3	97.1 +0.4	close	300 W vs 500 W: lower power handling · Xmax 5.7 mm < 6 mm: lower excursion-limited SPL	+
Oberton 15CX	38.2 +1.2	0.349 =	163.8 -4.2	6.8 +0.8	97.8 +1.1	close		+
P.Audio S15-100LF	38 +1	0.35 =	169.1 +1.1	7.8 +1.8	98 +1.3	close		+
Fane COLOSSUS 15XB v2012	38 +1	0.322 -0.03	168 =	7.5 +1.5	97.3 +0.6	close		+
BMS 15CN680	39 +2	0.351 =	157.8 -10.2	5.5 -0.5	97.4 +0.7	close	Xmax 5.5 mm < 6 mm: lower excursion-limited SPL	+
BMS 15CN682	39 +2	0.351 =	157.8 -10.2	5.5 -0.5	97.4 +0.7	close	Xmax 5.5 mm < 6 mm: lower excursion-limited SPL	+
Fane COLOSSUS 15XB	38 +1	0.32 -0.03	168 =	7.5 +1.5	96.2 -0.5	close		+
Faital PRO 15FH520	38 +1	0.34 -0.01	153.2 -14.8	9.15 +3.15	97 +0.3	close	4 Ω vs 8 Ω: amp load changes	+
JBL 2265 HPL	37 =	0.325 -0.02	176 +8	8 +2	97.9 +1.2	close		+
SICA 15 S 2.5 CS	36.3 -0.7	0.401 +0.05	168.7 +0.7	6.4 +0.4	96 -0.7	close	250 W vs 500 W: lower power handling	+

Compare the closest 3 against the SP-38A/500BS →

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.