Oberton 6B150

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

Thiele-Small parameters

Nominal size	6.5"
Impedance	8 Ω
Fs	55.04 Hz
Qts	0.292
Qes	0.311
Qms	4.72
Vas	14.61 L
Sd	127 cm²
Xmax	5.5 mm
Re	5.6 Ω
Bl	10.11 T·m
Mms	16.38 g
Pe	150 W
Sensitivity	92 dB

Alignment hint

EBP	177 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 3 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 +0.96	0.29 =	11.9 -2.71	5.5 =	92 =	close		+
18 Sound 6ND430	61 +5.96	0.27 -0.02	12.6 -2.01	5 -0.5	92.5 +0.5	close	Xmax 5 mm < 5.5 mm: lower excursion-limited SPL	+
18 Sound 6ND430	66 +10.96	0.3 +0.01	12.6 -2.01	5 -0.5	94 +2	usable	16 Ω vs 8 Ω: amp load changes · Xmax 5 mm < 5.5 mm: lower excursion-limited SPL	+
Beyma 6P200Fe	58 +2.96	0.26 -0.03	11.1 -3.51	5 -0.5	93 +1	usable	Xmax 5 mm < 5.5 mm: lower excursion-limited SPL	+
Oberton 6NB150	62.32 +7.28	0.28 -0.01	9.3 -5.31	5.5 =	92 =	usable		+
18 Sound 6ND430	64 +8.96	0.24 -0.05	12.2 -2.41	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	+
Beyma 6"B30/P	56 +0.96	0.5 +0.21	15.6 +0.99	5.5 =	90 -2	usable	50 W vs 150 W: lower power handling	+
B&C 6PS38	75 +19.96	0.3 +0.01	8 -6.61	6 +0.5	94 +2	usable		+
Sica 6.5 H 1.5 CP	45.4 -9.64	0.42 +0.13	20.2 +5.59	6 +0.5	89.4 -2.6	usable		+
Beyma 6NMFW	40 -15.04	0.34 +0.05	11 -3.61	9 +3.5	87 -5	usable		+

Compare the closest 3 against the 6B150 →

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.