18 Sound 6ND430

6.5" · 16 Ω · 200 W · 94 dB · datasheet ↗

Thiele-Small parameters

Nominal size	6.5"
Impedance	16 Ω
Fs	66 Hz
Qts	0.3
Qes	0.32
Qms	6.32
Vas	12.6 L
Sd	133 cm²
Xmax	5 mm
Re	10.6 Ω
Bl	12 T·m
Mms	10.3 g
Pe	200 W
Sensitivity	94 dB

Alignment hint

EBP	206 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 2.8 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
18 Sound 6ND430	61 -5	0.27 -0.03	12.6 =	5 =	92.5 -1.5	close	8 Ω vs 16 Ω: amp load changes	+
Beyma 6"P200/ND	56 -10	0.29 -0.01	11.9 -0.7	5.5 +0.5	92 -2	close	8 Ω vs 16 Ω: amp load changes	+
18 Sound 6ND430	64 -2	0.24 -0.06	12.2 -0.4	5 =	92.5 -1.5	close	4 Ω vs 16 Ω: amp load changes	+
Oberton 6B150	55.04 -10.96	0.292 -0.01	14.61 +2.01	5.5 +0.5	92 -2	usable	8 Ω vs 16 Ω: amp load changes · 150 W vs 200 W: lower power handling	+
Beyma 6P200Fe	58 -8	0.26 -0.04	11.1 -1.5	5 =	93 -1	usable	8 Ω vs 16 Ω: amp load changes	+
Oberton 6NB150	62.32 -3.68	0.28 -0.02	9.3 -3.3	5.5 +0.5	92 -2	usable	8 Ω vs 16 Ω: amp load changes · 150 W vs 200 W: lower power handling	+
B&C 6PS38	75 +9	0.3 =	8 -4.6	6 +1	94 =	usable	8 Ω vs 16 Ω: amp load changes · 150 W vs 200 W: lower power handling	+
Beyma 6P200Fe	66 =	0.35 +0.05	8.8 -3.8	4 -1	93 -1	usable	Xmax 4 mm < 5 mm: lower excursion-limited SPL	+
B&C 6PS44	71 +5	0.33 +0.03	7 -5.6	4.5 -0.5	93 -1	usable	8 Ω vs 16 Ω: amp load changes · Xmax 4.5 mm < 5 mm: lower excursion-limited SPL	+
B&C 6NDL38	69 +3	0.39 +0.09	7.1 -5.5	6 +1	91 -3	usable	4 Ω vs 16 Ω: amp load changes · 150 W vs 200 W: lower power handling	+

Compare the closest 3 against the 6ND430 →

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.