18 Sound 15ND930

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

Thiele-Small parameters

Nominal size	15"
Impedance	8 Ω
Fs	36 Hz
Qts	0.22
Qes	0.23
Qms	5.3
Vas	206 L
Sd	850 cm²
Xmax	7.5 mm
Re	5.5 Ω
Bl	23.8 T·m
Mms	101 g
Pe	500 W
Sensitivity	98 dB

Alignment hint

EBP	157 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 22.1 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
B&C 15NDL76	37 +1	0.22 =	195 -11	7 -0.5	99.5 +1.5	close	Xmax 7 mm < 7.5 mm: lower excursion-limited SPL	+
Beyma 15P80/ND	35 -1	0.214 -0.01	217 +11	7.9 +0.4	100.1 +2.1	close		+
18 Sound 15W930	33 -3	0.22 =	240 +34	7.5 =	98 =	close		+
18 Sound 15LW2400	34 -2	0.23 +0.01	191 -15	9.5 +2	97 -1	close	4 Ω vs 8 Ω: amp load changes	+
DAS Audio 15GN	36 =	0.213 -0.01	197 -9	6 -1.5	99.2 +1.2	close	Xmax 6 mm < 7.5 mm: lower excursion-limited SPL	+
RCF L 15/554K	35 -1	0.243 +0.02	227 +21	8 +0.5	98.7 +0.7	close		+
18 Sound 15ND930	35 -1	0.24 +0.02	182 -24	7.5 =	97 -1	close	4 Ω vs 8 Ω: amp load changes	+
RCF LF 15N401	34 -2	0.221 =	160 -46	7.1 -0.4	98.3 +0.3	close	Xmax 7.1 mm < 7.5 mm: lower excursion-limited SPL	+
Faital PRO 15FH510	35 -1	0.26 +0.04	191.8 -14.2	9.25 +1.75	98 =	close		+
Electro-Voice EVX-155	35.4 -0.6	0.212 -0.01	220 +14	6.4 -1.1	100.5 +2.5	close	Xmax 6.4 mm < 7.5 mm: lower excursion-limited SPL	+

Compare the closest 3 against the 15ND930 →

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.