B&C 8NSM64

8" · 16 Ω · 250 W · 100 dB · datasheet ↗

Thiele-Small parameters

Nominal size	8"
Impedance	16 Ω
Fs	245 Hz
Qts	0.43
Qes	0.45
Qms	10.2
Vas	1.5 L
Sd	220 cm²
Xmax	2 mm
Re	10.9 Ω
Bl	28 T·m
Mms	19 g
Pe	250 W
Sensitivity	100 dB

Alignment hint

EBP	544 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 0.9 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
B&C 8NSM64	245 =	0.34 -0.09	1.5 =	2 =	100 =	close	8 Ω vs 16 Ω: amp load changes	+
18 Sound 8NM610	260 +15	0.23 -0.2	1.6 +0.1	3 +1	104 +4	usable		+
18 Sound 8NM610	260 +15	0.21 -0.22	1.5 =	3 +1	104 +4	risky	8 Ω vs 16 Ω: amp load changes	+
18 Sound 8MB710	108 -137	0.32 -0.11	9 +7.5	2.25 +0.25	99.5 -0.5	risky	8 Ω vs 16 Ω: amp load changes	+
18 Sound 8MB720	108 -137	0.32 -0.11	9 +7.5	2.25 +0.25	99.5 -0.5	risky	8 Ω vs 16 Ω: amp load changes	+
18 Sound 8NMB750	91 -154	0.37 -0.06	7.3 +5.8	6.3 +4.3	95 -5	risky		+
Oberton 8NM201	102.81 -142.19	0.286 -0.14	8.07 +6.57	2.75 +0.75	98 -2	risky	8 Ω vs 16 Ω: amp load changes	+
Eminence ALPHA-8MRA	514 +269	1.42 +0.99	0.8 -0.7	1.6 -0.4	100.9 +0.9	risky	8 Ω vs 16 Ω: amp load changes · 125 W vs 250 W: lower power handling · Xmax 1.6 mm < 2 mm: lower excursion-limited SPL	+
Faital PRO 8FE400	100 -145	0.48 +0.05	9.9 +8.4	4.87 +2.87	96 -4	risky	4 Ω vs 16 Ω: amp load changes	+
Faital PRO 8PR155	85 -160	0.46 +0.03	10.6 +9.1	3.57 +1.57	97 -3	risky		+

Compare the closest 3 against the 8NSM64 →

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.