18 Sound 15ND830

15" · 4 Ω · 450 W · 98 dB · datasheet ↗

Thiele-Small parameters

Nominal size	15"
Impedance	4 Ω
Fs	42 Hz
Qts	0.34
Qes	0.36
Qms	7.2
Vas	157 L
Sd	850 cm²
Xmax	6.5 mm
Re	3 Ω
Bl	14 T·m
Mms	85 g
Pe	450 W
Sensitivity	98 dB

Alignment hint

EBP	117 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 47.2 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 15MC700	41 -1	0.352 +0.01	153 -4	7.4 +0.9	97.7 -0.3	close	8 Ω vs 4 Ω: amp load changes	+
PD PD 15BR40	38.7 -3.3	0.34 =	158.3 +1.3	7.9 +1.4	98.1 +0.1	close	8 Ω vs 4 Ω: amp load changes	+
Precision Devices PD 15BR40	38.7 -3.3	0.34 =	158.3 +1.3	7.9 +1.4	98.1 +0.1	close	8 Ω vs 4 Ω: amp load changes	+
Faital PRO 15FH500 vp3	40.8 -1.2	0.343 =	141.8 -15.2	6.7 +0.2	98.2 +0.2	close	8 Ω vs 4 Ω: amp load changes	+
Faital PRO 15FH500 vp2	40 -2	0.335 -0.01	146.9 -10.1	6.7 +0.2	98.3 +0.3	close	8 Ω vs 4 Ω: amp load changes	+
Beyma 15MCB700	44 +2	0.34 =	148 -9	7 +0.5	99 +1	close	8 Ω vs 4 Ω: amp load changes	+
Oberton 15MB500	41.5 -0.5	0.339 =	161.54 +4.54	7.75 +1.25	100 +2	close	8 Ω vs 4 Ω: amp load changes	+
BMS 15N620 v2015	41 -1	0.348 +0.01	154 -3	5.5 -1	98 =	close	8 Ω vs 4 Ω: amp load changes · Xmax 5.5 mm < 6.5 mm: lower excursion-limited SPL	+
LaVoce NBASS15-30	42 =	0.36 +0.02	143.06 -13.94	6.6 +0.1	98.5 +0.5	close	8 Ω vs 4 Ω: amp load changes	+
Faital PRO 15FH500 vp1	40 -2	0.328 -0.01	146.1 -10.9	6.7 +0.2	98.4 +0.4	close	8 Ω vs 4 Ω: amp load changes	+

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.