B&C 8NW51

8" · 8 Ω · 200 W · 96.5 dB · datasheet ↗

Thiele-Small parameters

Nominal size	8"
Impedance	8 Ω
Fs	74 Hz
Qts	0.17
Qes	0.19
Qms	2.7
Vas	11 L
Sd	220 cm²
Xmax	6 mm
Re	5.2 Ω
Bl	18.9 T·m
Mms	28 g
Pe	200 W
Sensitivity	96.5 dB

Alignment hint

EBP	389 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 0.7 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 8FW51	74 =	0.21 +0.04	12 +1	6 =	97 +0.5	close		+
LaVoce WAF082.01	76 +2	0.21 +0.04	10.21 -0.79	5.8 -0.2	97 +0.5	close	Xmax 5.8 mm < 6 mm: lower excursion-limited SPL	+
B&C 8NW51	76 +2	0.25 +0.08	10.6 -0.4	6 =	97 +0.5	usable	4 Ω vs 8 Ω: amp load changes	+
B&C 8MDN51	70 -4	0.2 +0.03	16 +5	6 =	97 +0.5	usable		+
Beyma 8MC500Nd	69 -5	0.18 +0.01	15.9 +4.9	5 -1	98 +1.5	usable	Xmax 5 mm < 6 mm: lower excursion-limited SPL	+
LaVoce WAN082.02	80 +6	0.23 +0.06	8.97 -2.03	5.8 -0.2	96.5 =	usable	Xmax 5.8 mm < 6 mm: lower excursion-limited SPL	+
B&C 8NW51	68 -6	0.22 +0.05	14 +3	7 +1	97 +0.5	usable	16 Ω vs 8 Ω: amp load changes	+
B&C 8CLA64	71 -3	0.24 +0.07	12.5 +1.5	5.3 -0.7	96 -0.5	usable	Xmax 5.3 mm < 6 mm: lower excursion-limited SPL	+
18 Sound 8NTLW2000	71 -3	0.21 +0.04	13 +2	4.4 -1.6	97.5 +1	usable	Xmax 4.4 mm < 6 mm: lower excursion-limited SPL	+
B&C 8NDL64	73 -1	0.24 +0.07	11.8 +0.8	4.5 -1.5	97 +0.5	usable	16 Ω vs 8 Ω: amp load changes · Xmax 4.5 mm < 6 mm: lower excursion-limited SPL	+

Compare the closest 3 against the 8NW51 →

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.