18 Sound 6ND410

6.5" · 16 Ω · 180 W · 102 dB · datasheet ↗

Thiele-Small parameters

Nominal size	6.5"
Impedance	16 Ω
Fs	149 Hz
Qts	0.48
Qes	0.55
Qms	4.14
Vas	6.2 L
Sd	143 cm²
Xmax	2 mm
Re	10.6 Ω
Bl	13 T·m
Mms	8.8 g
Pe	180 W
Sensitivity	102 dB

Alignment hint

EBP	271 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 5.3 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 6NMB420	112 -37	0.4 -0.08	5.9 -0.3	3 +1	100 -2	usable		+
B&C 6PEV13	126 -23	0.36 -0.12	6 -0.2	2.5 +0.5	99 -3	usable	8 Ω vs 16 Ω: amp load changes · 120 W vs 180 W: lower power handling	+
Oberton 6M150	115.1 -33.9	0.422 -0.06	5.35 -0.85	2.25 +0.25	96 -6	usable	8 Ω vs 16 Ω: amp load changes	+
18 Sound 6NMB420	110 -39	0.33 -0.15	6.1 -0.1	3 +1	100 -2	usable	8 Ω vs 16 Ω: amp load changes	+
B&C 6MDN44	138 -11	0.47 -0.01	2.8 -3.4	3 +1	97 -5	usable		+
18 Sound 6ND410	120 -29	0.24 -0.24	6.2 =	2 =	102 =	usable	8 Ω vs 16 Ω: amp load changes	+
Oberton 6NM150	124 -25	0.377 -0.1	4 -2.2	2.25 +0.25	97 -5	usable	8 Ω vs 16 Ω: amp load changes	+
B&C 6MD38	130 -19	0.44 -0.04	3 -3.2	2 =	96 -6	usable	8 Ω vs 16 Ω: amp load changes · 120 W vs 180 W: lower power handling	+
18 Sound 6NMB900	100 -49	0.34 -0.14	6.65 +0.45	3 +1	96 -6	risky		+
Beyma 6"MI100	128 -21	0.51 +0.03	3.1 -3.1	3 +1	94 -8	risky	8 Ω vs 16 Ω: amp load changes	+

Compare the closest 3 against the 6ND410 →

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.