18 Sound 15W930

15" · 8 Ω · 500 W · 98 dB · datasheet ↗

Thiele-Small parameters

Nominal size	15"
Impedance	8 Ω
Fs	33 Hz
Qts	0.22
Qes	0.23
Qms	8.78
Vas	240 L
Sd	850 cm²
Xmax	7.5 mm
Re	5.5 Ω
Bl	22.1 T·m
Mms	97 g
Pe	500 W
Sensitivity	98 dB

Alignment hint

EBP	143 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 25.7 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
PD PD 1550	31 -2	0.212 -0.01	242 +2	7.4 -0.1	98.1 +0.1	close	Xmax 7.4 mm < 7.5 mm: lower excursion-limited SPL	+
Precision Devices PD 1550	31 -2	0.212 -0.01	242 +2	7.4 -0.1	98.1 +0.1	close	Xmax 7.4 mm < 7.5 mm: lower excursion-limited SPL	+
18 Sound 15ND930	36 +3	0.22 =	206 -34	7.5 =	98 =	close		+
Precision Devices PD1550	31 -2	0.21 -0.01	242 +2	12 +4.5	99 +1	close		+
RCF L 15/554K	35 +2	0.243 +0.02	227 -13	8 +0.5	98.7 +0.7	close		+
Beyma 15P80/ND	35 +2	0.214 -0.01	217 -23	7.9 +0.4	100.1 +2.1	close		+
RCF L 15P200	30 -3	0.23 +0.01	245 +5	5.9 -1.6	97.3 -0.7	close	300 W vs 500 W: lower power handling · Xmax 5.9 mm < 7.5 mm: lower excursion-limited SPL	+
18 Sound 15LW2400	34 +1	0.23 +0.01	191 -49	9.5 +2	97 -1	close	4 Ω vs 8 Ω: amp load changes	+
Beyma SM115/K vp2	29.8 -3.2	0.228 +0.01	291 +51	8 +0.5	99 +1	close		+
JBL 1501FE	29.5 -3.5	0.236 +0.02	217.7 -22.3	6.9 -0.6	97.2 -0.8	close	Xmax 6.9 mm < 7.5 mm: lower excursion-limited SPL	+

Compare the closest 3 against the 15W930 →

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.