B&C 8FW51

8" · 8 Ω · 200 W · 97 dB · datasheet ↗

Thiele-Small parameters

Nominal size	8"
Impedance	8 Ω
Fs	74 Hz
Qts	0.21
Qes	0.21
Qms	9.3
Vas	12 L
Sd	220 cm²
Xmax	6 mm
Re	5.2 Ω
Bl	17.7 T·m
Mms	27 g
Pe	200 W
Sensitivity	97 dB

Alignment hint

EBP	352 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 1.2 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
LaVoce WAF082.01	76 +2	0.21 =	10.21 -1.79	5.8 -0.2	97 =	close	Xmax 5.8 mm < 6 mm: lower excursion-limited SPL	+
B&C 8NW51	68 -6	0.22 +0.01	14 +2	7 +1	97 =	close	16 Ω vs 8 Ω: amp load changes	+
18 Sound 8NTLW2000	71 -3	0.21 =	13 +1	4.4 -1.6	97.5 +0.5	close	Xmax 4.4 mm < 6 mm: lower excursion-limited SPL	+
B&C 8NW51	76 +2	0.25 +0.04	10.6 -1.4	6 =	97 =	close	4 Ω vs 8 Ω: amp load changes	+
B&C 8MDN51	70 -4	0.2 -0.01	16 +4	6 =	97 =	close		+
B&C 8NW51	74 =	0.17 -0.04	11 -1	6 =	96.5 -0.5	close		+
B&C 8CLA64	71 -3	0.24 +0.03	12.5 +0.5	5.3 -0.7	96 -1	close	Xmax 5.3 mm < 6 mm: lower excursion-limited SPL	+
B&C 8NDL64	73 -1	0.24 +0.03	11.8 -0.2	4.5 -1.5	97 =	close	16 Ω vs 8 Ω: amp load changes · Xmax 4.5 mm < 6 mm: lower excursion-limited SPL	+
Oberton 8NB201	70.56 -3.44	0.245 +0.04	12.54 +0.54	5.25 -0.75	95 -2	usable	Xmax 5.25 mm < 6 mm: lower excursion-limited SPL	+
LaVoce WAN082.02	80 +6	0.23 +0.02	8.97 -3.03	5.8 -0.2	96.5 -0.5	usable	Xmax 5.8 mm < 6 mm: lower excursion-limited SPL	+

Compare the closest 3 against the 8FW51 →

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.