B&C 6PS38

6.5" · 8 Ω · 150 W · 94 dB · datasheet ↗

Thiele-Small parameters

Nominal size	6.5"
Impedance	8 Ω
Fs	75 Hz
Qts	0.3
Qes	0.31
Qms	11.7
Vas	8 L
Sd	132 cm²
Xmax	6 mm
Re	5.4 Ω
Bl	10.8 T·m
Mms	14 g
Pe	150 W
Sensitivity	94 dB

Alignment hint

EBP	242 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 1.8 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 6PS44	71 -4	0.33 +0.03	7 -1	4.5 -1.5	93 -1	usable	Xmax 4.5 mm < 6 mm: lower excursion-limited SPL	+
Beyma 6CMV2	90 +15	0.34 +0.04	6.5 -1.5	5.7 -0.3	94 =	usable	Xmax 5.7 mm < 6 mm: lower excursion-limited SPL	+
Oberton 6NB150	62.32 -12.68	0.28 -0.02	9.3 +1.3	5.5 -0.5	92 -2	usable	Xmax 5.5 mm < 6 mm: lower excursion-limited SPL	+
18 Sound 6ND430	66 -9	0.3 =	12.6 +4.6	5 -1	94 =	usable	16 Ω vs 8 Ω: amp load changes · Xmax 5 mm < 6 mm: lower excursion-limited SPL	+
B&C 6NDL38	69 -6	0.39 +0.09	7.1 -0.9	6 =	91 -3	usable	4 Ω vs 8 Ω: amp load changes	+
B&C 6NDL38	72 -3	0.42 +0.12	7 -1	6 =	92 -2	usable		+
Beyma 6P200Fe	66 -9	0.35 +0.05	8.8 +0.8	4 -2	93 -1	usable	16 Ω vs 8 Ω: amp load changes · Xmax 4 mm < 6 mm: lower excursion-limited SPL	+
Beyma 6"P200/ND	56 -19	0.29 -0.01	11.9 +3.9	5.5 -0.5	92 -2	usable	Xmax 5.5 mm < 6 mm: lower excursion-limited SPL	+
B&C 6NDL38	70 -5	0.5 +0.2	8.9 +0.9	6 =	93 -1	usable	16 Ω vs 8 Ω: amp load changes	+
Beyma 6P200Fe	58 -17	0.26 -0.04	11.1 +3.1	5 -1	93 -1	usable	Xmax 5 mm < 6 mm: lower excursion-limited SPL	+

Compare the closest 3 against the 6PS38 →

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 (1)

15"+6.5"+1" 3-Way Toptopbass reflex