STX W.38.800.8.MC

15" · 8 Ω · 500 W · 96.5 dB · datasheet ↗

Thiele-Small parameters

Nominal size	15"
Impedance	8 Ω
Fs	28 Hz
Qts	0.252
Qes	0.27
Qms	3.71
Vas	247 L
Sd	855 cm²
Xmax	8 mm
Re	5.7 Ω
Bl	22.3 T·m
Mms	134 g
Pe	500 W
Sensitivity	96.5 dB

Alignment hint

EBP	104 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 35.9 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 SM115/K	29 +1	0.249 =	273 +26	8 =	97.2 +0.7	close		+
Ciare NDH 15-4S	28 =	0.254 =	220 -27	11.5 +3.5	95.9 -0.6	close		+
Ciare NDH15-4S	28 =	0.25 =	220 -27	11.5 +3.5	94.5 -2	close		+
RCF L 15P200/A	29 +1	0.291 +0.04	280 +33	8.9 +0.9	96.6 +0.1	close	300 W vs 500 W: lower power handling	+
JBL 1501FE	29.5 +1.5	0.236 -0.02	217.7 -29.3	6.9 -1.1	97.2 +0.7	close	Xmax 6.9 mm < 8 mm: lower excursion-limited SPL	+
Beyma SM-115/K	27 -1	0.253 =	345 +98	8 =	97.5 +1	close		+
RCF L 15P200 v1983	29 +1	0.291 +0.04	280 +33	7.4 -0.6	96.6 +0.1	close	300 W vs 500 W: lower power handling · Xmax 7.4 mm < 8 mm: lower excursion-limited SPL	+
Beyma SM115/K vp1	27.6 -0.4	0.222 -0.03	296.7 +49.7	8 =	98.3 +1.8	close		+
RCF L 15P200	30 +2	0.23 -0.02	245 -2	5.9 -2.1	97.3 +0.8	close	300 W vs 500 W: lower power handling · Xmax 5.9 mm < 8 mm: lower excursion-limited SPL	+
JBL 1500 AL	27.3 -0.7	0.274 +0.02	264.6 +17.6	5.5 -2.5	96.5 =	close	Xmax 5.5 mm < 8 mm: lower excursion-limited SPL	+

Compare the closest 3 against the W.38.800.8.MC →

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.