Jensen P12Q

12" · 8 Ω · 40 W · 95.1 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	90.4 Hz
Qts	1.944
Qes	2.38
Qms	10.62
Vas	47.5 L
Sd	491 cm²
Xmax	0.8 mm
Re	5.72 Ω
Bl	5.5 T·m
Mms	22.1 g
Pe	40 W
Sensitivity	95.1 dB

Alignment hint

EBP	38 · sealed
Sealed Vb (Qtc ≈ 0.71)	Qts too high

EBP < 50: favours a sealed (closed) 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
Jensen C12Q-8	87.3 -3.1	1.69 -0.25	44.1 -3.4	0.8 =	94.8 -0.3	close		+
Jensen P12R	80 -10.4	1.795 -0.15	66.4 +18.9	0.8 =	95.3 +0.2	usable	25 W vs 40 W: lower power handling	+
Jensen JCH 1270-8	78 -12.4	1.084 -0.86	46.7 -0.8	1.5 +0.7	96.6 +1.5	usable		+
Beyma 12GA50	90 -0.4	1.16 -0.78	34 -13.5	2 +1.2	94.8 -0.3	usable		+
Visaton FR 30	90 -0.4	1.284 -0.66	27 -20.5	1.1 +0.3	93.7 -1.4	usable		+
Eminence RED FANG 16	89 -1.4	0.971 -0.97	50.2 +2.7	0.5 -0.3	95.6 +0.5	risky	16 Ω vs 8 Ω: amp load changes · Xmax 0.5 mm < 0.8 mm: lower excursion-limited SPL	+
Celestion G12T 75	85 -5.4	0.836 -1.11	51 +3.5	2 +1.2	95.3 +0.2	risky	16 Ω vs 8 Ω: amp load changes	+
Celestion G12T-100	81 -9.4	0.833 -1.11	47 -0.5	2 +1.2	96.8 +1.7	risky		+
Celestion F12M-150 Triple Cone	69.4 -21	0.906 -1.04	46.9 -0.6	2.3 +1.5	95.2 +0.1	risky		+
Eminence LEGEND 1258	94 +3.6	0.99 -0.95	32.5 -15	0.5 -0.3	95.9 +0.8	risky	Xmax 0.5 mm < 0.8 mm: lower excursion-limited SPL	+

Compare the closest 3 against the P12Q →

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.