Oberton 8NB201

8" · 8 Ω · 200 W · 95 dB · datasheet ↗

Thiele-Small parameters

Nominal size	8"
Impedance	8 Ω
Fs	70.56 Hz
Qts	0.245
Qes	0.255
Qms	5.97
Vas	12.54 L
Sd	202 cm²
Xmax	5.25 mm
Re	5.27 Ω
Bl	14.41 T·m
Mms	22.67 g
Pe	200 W
Sensitivity	95 dB

Alignment hint

EBP	277 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 1.7 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 8CLA64	71 +0.44	0.24 -0.01	12.5 -0.04	5.3 +0.05	96 +1	close		+
Sica 8 K 3 PL	68.1 -2.46	0.25 +0.01	12.2 -0.34	5 -0.25	95.1 +0.1	close	Xmax 5 mm < 5.25 mm: lower excursion-limited SPL	+
B&C 8NDL64	73 +2.44	0.24 -0.01	11.8 -0.74	4.5 -0.75	97 +2	close	16 Ω vs 8 Ω: amp load changes · Xmax 4.5 mm < 5.25 mm: lower excursion-limited SPL	+
B&C 8NW51	76 +5.44	0.25 +0.01	10.6 -1.94	6 +0.75	97 +2	close	4 Ω vs 8 Ω: amp load changes	+
Beyma 8WR300	65 -5.56	0.27 +0.03	15 +2.46	6 +0.75	95 =	close		+
18 Sound 8NTLW2000	74 +3.44	0.26 +0.02	11.3 -1.24	4.4 -0.85	96.5 +1.5	close	16 Ω vs 8 Ω: amp load changes · Xmax 4.4 mm < 5.25 mm: lower excursion-limited SPL	+
B&C 8FW51	74 +3.44	0.21 -0.04	12 -0.54	6 +0.75	97 +2	close		+
B&C 8NW51	68 -2.56	0.22 -0.02	14 +1.46	7 +1.75	97 +2	close	16 Ω vs 8 Ω: amp load changes	+
Beyma 8WRS300	65 -5.56	0.28 +0.04	15 +2.46	6 +0.75	95 =	close		+
18 Sound 8NTLW2000	71 +0.44	0.21 -0.04	13 +0.46	4.4 -0.85	97.5 +2.5	usable	Xmax 4.4 mm < 5.25 mm: lower excursion-limited SPL	+

Compare the closest 3 against the 8NB201 →

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.