B&C 320K/C-A

12" · 8 Ω · 120 W · 101 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	82 Hz
Qts	0.5
Qes	0.52
Qms	13.3
Vas	53 L
Sd	522 cm²
Xmax	2 mm
Re	5.4 Ω
Bl	12.2 T·m
Mms	27 g
Pe	120 W
Sensitivity	101 dB

Alignment hint

EBP	158 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 53 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 320KC-8A	82 =	0.5 =	53 =	2 =	101.2 +0.2	close		+
B&C 320K/C-A	82 =	0.59 +0.09	52 -1	2 =	100 -1	close	16 Ω vs 8 Ω: amp load changes	+
Celestion G12T-75 v2026	85 +3	0.595 +0.09	61 +8	2 =	100.4 -0.6	close	75 W vs 120 W: lower power handling	+
Beyma 12GU	70 -12	0.475 -0.03	60 +7	2 =	98.3 -2.7	usable	80 W vs 120 W: lower power handling	+
Celestion TRUVOX 1225	63 -19	0.5 =	54.5 +1.5	2.5 +0.5	97.9 -3.1	usable		+
Celestion VINTAGE 30	75 -7	0.531 +0.03	60 +7	2.1 +0.1	96.5 -4.5	usable	16 Ω vs 8 Ω: amp load changes · 60 W vs 120 W: lower power handling	+
18 Sound 12TC300	78 -4	0.428 -0.07	56.5 +3.5	1.5 -0.5	101.7 +0.7	usable	Xmax 1.5 mm < 2 mm: lower excursion-limited SPL	+
Celestion TF 1225	63 -19	0.5 =	54.5 +1.5	3.5 +1.5	97.9 -3.1	usable		+
Celestion TF 1218TC v2010	74.1 -7.9	0.455 -0.04	48.1 -4.9	1.5 -0.5	99.2 -1.8	usable	Xmax 1.5 mm < 2 mm: lower excursion-limited SPL	+
Warehouse Sound REAPER 12	77.4 -4.6	0.464 -0.04	65 +12	1.3 -0.7	100.6 -0.4	usable	30 W vs 120 W: lower power handling · Xmax 1.3 mm < 2 mm: lower excursion-limited SPL	+

Compare the closest 3 against the 320K/C-A →

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.