Eminence GA-SC64

12" · 8 Ω · 40 W · 99.3 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	88 Hz
Qts	0.579
Qes	0.6
Qms	16.82
Vas	45 L
Sd	519.5 cm²
Xmax	1.2 mm
Re	7.63 Ω
Bl	13.9 T·m
Mms	27.5 g
Pe	40 W
Sensitivity	99.3 dB

Alignment hint

EBP	147 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 91.6 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 320K/C-A	82 -6	0.59 +0.01	52 +7	2 +0.8	100 +0.7	close	16 Ω vs 8 Ω: amp load changes	+
Eminence CV 65A	76 -12	0.582 =	59 +14	1.2 =	99 -0.3	close		+
Eminence LEGEND GB128	86 -2	0.648 +0.07	43.9 -1.1	0.8 -0.4	99.2 -0.1	usable	Xmax 0.8 mm < 1.2 mm: lower excursion-limited SPL	+
Celestion G12T-75 v2026	85 -3	0.595 +0.02	61 +16	2 +0.8	100.4 +1.1	usable		+
Jensen NEO 12	92 +4	0.705 +0.13	40.4 -4.6	1 -0.2	99 -0.3	usable	Xmax 1 mm < 1.2 mm: lower excursion-limited SPL	+
Jensen JN12-100TR	72.4 -15.6	0.602 +0.02	48.7 +3.7	1 -0.2	97.3 -2	usable	Xmax 1 mm < 1.2 mm: lower excursion-limited SPL	+
Jensen P12N	90 +2	0.717 +0.14	40.2 -4.8	1 -0.2	98.6 -0.7	usable	Xmax 1 mm < 1.2 mm: lower excursion-limited SPL	+
Eminence CANNABIS REX	96 +8	0.642 +0.06	45.5 +0.5	0.8 -0.4	100.5 +1.2	usable	Xmax 0.8 mm < 1.2 mm: lower excursion-limited SPL	+
Jensen JN12-100TR 8	72.4 -15.6	0.608 +0.03	48.7 +3.7	1 -0.2	97.2 -2.1	usable	Xmax 1 mm < 1.2 mm: lower excursion-limited SPL	+
Eminence THE GOVERNOR 8	101 +13	0.561 -0.02	30.1 -14.9	1.2 =	99.9 +0.6	usable		+

Compare the closest 3 against the GA-SC64 →

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.