Supravox 285 GMF vp8

12" · 8 Ω · 70 W · 100.7 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	52.2 Hz
Qts	0.349
Qes	0.36
Qms	11.29
Vas	152.5 L
Sd	471 cm²
Xmax	4 mm
Re	6.5 Ω
Bl	10.6 T·m
Mms	18.9 g
Pe	70 W
Sensitivity	100.7 dB

Alignment hint

EBP	145 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 49.1 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
Supravox 285 GMF vp4	50.1 -2.1	0.335 -0.01	151 -1.5	3.9 -0.1	100.2 -0.5	close	Xmax 3.9 mm < 4 mm: lower excursion-limited SPL	+
Supravox 285 GMF vp3	50.4 -1.8	0.325 -0.02	154 +1.5	3.9 -0.1	100.5 -0.2	close	Xmax 3.9 mm < 4 mm: lower excursion-limited SPL	+
Supravox 285-2000EXC_08V	53 +0.8	0.393 +0.04	154 +1.5	4 =	100.4 -0.3	close		+
Supravox 285 GMF v2019	47.8 -4.4	0.327 -0.02	157 +4.5	4 =	99.9 -0.8	close		+
Supravox 285-2000EXC_09V	53 +0.8	0.309 -0.04	156 +3.5	3.8 -0.2	101.5 +0.8	close	Xmax 3.8 mm < 4 mm: lower excursion-limited SPL	+
Supravox 285 GMF vp wowo	50.2 -2	0.323 -0.03	143 -9.5	3.7 -0.3	100.2 -0.5	close	Xmax 3.7 mm < 4 mm: lower excursion-limited SPL	+
Supravox 285 GMF vp7	56.3 +4.1	0.369 +0.02	137.5 -15	3.8 -0.2	100.9 +0.2	close	Xmax 3.8 mm < 4 mm: lower excursion-limited SPL	+
Supravox 285 GMF v2008	47 -5.2	0.372 +0.02	150 -2.5	4 =	98.9 -1.8	close		+
Supravox 285 GMF v2012	47 -5.2	0.372 +0.02	150 -2.5	4 =	98.9 -1.8	close		+
Supravox 285 GMF vp JTR 2	47.6 -4.6	0.335 -0.01	186 +33.5	4 =	100.5 -0.2	close		+

Compare the closest 3 against the 285 GMF vp8 →

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.