18 Sound 15ND830

15" · 8 Ω · 450 W · 98 dB · datasheet ↗

Thiele-Small parameters

Nominal size	15"
Impedance	8 Ω
Fs	39 Hz
Qts	0.32
Qes	0.35
Qms	3.9
Vas	213 L
Sd	850 cm²
Xmax	6.5 mm
Re	5.7 Ω
Bl	18 T·m
Mms	80 g
Pe	450 W
Sensitivity	98 dB

Alignment hint

EBP	111 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 54.9 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 15MW/ND	40 +1	0.331 +0.01	207 -6	6.5 =	99.4 +1.4	close		+
Beyma 15WRS400	38 -1	0.337 +0.02	205.4 -7.6	6.3 -0.2	98.6 +0.6	close	Xmax 6.3 mm < 6.5 mm: lower excursion-limited SPL	+
18 Sound 15W700	38 -1	0.3 -0.02	217 +4	6.5 =	99 +1	close		+
Fane SOVEREIGN PRO 15-600	38 -1	0.351 +0.03	201 -12	6.5 =	98.2 +0.2	close		+
Beyma 15WR400	38 -1	0.308 -0.01	214 +1	6 -0.5	99.7 +1.7	close	Xmax 6 mm < 6.5 mm: lower excursion-limited SPL	+
Fane FC-153F01	40 +1	0.305 -0.02	220 +7	6.6 +0.1	100 +2	close		+
Monacor SP-15/500FH	35 -4	0.31 -0.01	218 +5	7.8 +1.3	98.6 +0.6	close		+
Fane SOVEREIGN PRO 15-500	40 +1	0.319 =	192 -21	6 -0.5	99.4 +1.4	close	Xmax 6 mm < 6.5 mm: lower excursion-limited SPL	+
Radian 5215 B-8	38.7 -0.3	0.316 =	189.7 -23.3	5.5 -1	98.2 +0.2	close	Xmax 5.5 mm < 6.5 mm: lower excursion-limited SPL	+
Eminence VORTEX 15	39.3 +0.3	0.321 =	219.7 +6.7	5.5 -1	100 +2	close	250 W vs 450 W: lower power handling · Xmax 5.5 mm < 6.5 mm: lower excursion-limited SPL	+

Compare the closest 3 against the 15ND830 →

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.