GRS 12PF-8

12" · 8 Ω · 100 W · 87.1 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	35 Hz
Qts	1.543
Qes	2.08
Qms	5.97
Vas	149.5 L
Sd	517 cm²
Xmax	3.5 mm
Re	7.56 Ω
Bl	6.4 T·m
Mms	51.8 g
Pe	100 W
Sensitivity	87.1 dB

Alignment hint

EBP	17 · 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
Conrad DYH-1220 vp	33 -2	1.64 +0.1	164.9 +15.4	3.9 +0.4	89 +1.9	close		+
Goldwood GW‐212/4	35.8 +0.8	1.204 -0.34	166.6 +17.1	3.5 =	88.9 +1.8	usable	4 Ω vs 8 Ω: amp load changes	+
Goldwood GW-212/8	38.8 +3.8	1.439 -0.1	101.7 -47.8	2.5 -1	87.3 +0.2	usable	Xmax 2.5 mm < 3.5 mm: lower excursion-limited SPL	+
Goldwood 212/8	38 +3	1.44 -0.1	101.6 -47.9	2.5 -1	86.3 -0.8	usable	Xmax 2.5 mm < 3.5 mm: lower excursion-limited SPL	+
Lautsprecher Technik MHB-12	38.2 +3.2	1.107 -0.44	132.7 -16.8	5 +1.5	88.9 +1.8	usable		+
SpeaKa 180/200	28 -7	1.39 -0.15	115.4 -34.1	5.1 +1.6	83.4 -3.7	usable	16 Ω vs 8 Ω: amp load changes	+
JB Systems SP12/200 vp	42.9 +7.9	1.385 -0.16	107.3 -42.2	3 -0.5	89.5 +2.4	usable	Xmax 3 mm < 3.5 mm: lower excursion-limited SPL	+
Sphynx SP-31-S	41 +6	1.255 -0.29	101 -48.5	3.8 +0.3	88.8 +1.7	usable		+
Sony XS-NW1201	27.5 -7.5	0.928 -0.61	151.21 +1.71	4.15 +0.65	86.7 -0.4	usable	4 Ω vs 8 Ω: amp load changes	+
Goldwood GW-1248	33.3 -1.7	0.933 -0.61	103.6 -45.9	3 -0.5	87.2 +0.1	usable	Xmax 3 mm < 3.5 mm: lower excursion-limited SPL	+

Compare the closest 3 against the 12PF-8 →

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.