Oberton 6NB150

6.5" · 8 Ω · 150 W · 92 dB · datasheet ↗

Thiele-Small parameters

Nominal size	6.5"
Impedance	8 Ω
Fs	62.32 Hz
Qts	0.28
Qes	0.296
Qms	5.22
Vas	9.3 L
Sd	127 cm²
Xmax	5.5 mm
Re	5.57 Ω
Bl	10.77 T·m
Mms	15.72 g
Pe	150 W
Sensitivity	92 dB

Alignment hint

EBP	211 · 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
Beyma 6"P200/ND	56 -6.32	0.29 +0.01	11.9 +2.6	5.5 =	92 =	close		+
18 Sound 6ND430	61 -1.32	0.27 -0.01	12.6 +3.3	5 -0.5	92.5 +0.5	close	Xmax 5 mm < 5.5 mm: lower excursion-limited SPL	+
Beyma 6P200Fe	58 -4.32	0.26 -0.02	11.1 +1.8	5 -0.5	93 +1	close	Xmax 5 mm < 5.5 mm: lower excursion-limited SPL	+
B&C 6PS38	75 +12.68	0.3 +0.02	8 -1.3	6 +0.5	94 +2	usable		+
18 Sound 6ND430	64 +1.68	0.24 -0.04	12.2 +2.9	5 -0.5	92.5 +0.5	usable	4 Ω vs 8 Ω: amp load changes · Xmax 5 mm < 5.5 mm: lower excursion-limited SPL	+
18 Sound 6ND430	66 +3.68	0.3 +0.02	12.6 +3.3	5 -0.5	94 +2	usable	16 Ω vs 8 Ω: amp load changes · Xmax 5 mm < 5.5 mm: lower excursion-limited SPL	+
Oberton 6B150	55.04 -7.28	0.292 +0.01	14.61 +5.31	5.5 =	92 =	usable		+
Beyma 6P200Fe	66 +3.68	0.35 +0.07	8.8 -0.5	4 -1.5	93 +1	usable	16 Ω vs 8 Ω: amp load changes · Xmax 4 mm < 5.5 mm: lower excursion-limited SPL	+
B&C 6PS44	71 +8.68	0.33 +0.05	7 -2.3	4.5 -1	93 +1	usable	Xmax 4.5 mm < 5.5 mm: lower excursion-limited SPL	+
B&C 6NDL38	69 +6.68	0.39 +0.11	7.1 -2.2	6 +0.5	91 -1	usable	4 Ω vs 8 Ω: amp load changes	+

Compare the closest 3 against the 6NB150 →

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.