Supravox 285 GMF v2019

12" · 8 Ω · 70 W · 99.9 dB · datasheet ↗

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	47.8 Hz
Qts	0.327
Qes	0.34
Qms	8.86
Vas	157 L
Sd	442.6 cm²
Xmax	4 mm
Re	6.5 Ω
Bl	10.6 T·m
Mms	19.4 g
Pe	70 W
Sensitivity	99.9 dB

Alignment hint

EBP	141 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 42.7 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 vp3	50.4 +2.6	0.325 =	154 -3	3.9 -0.1	100.5 +0.6	close	Xmax 3.9 mm < 4 mm: lower excursion-limited SPL	+
Supravox 285 GMF vp4	50.1 +2.3	0.335 +0.01	151 -6	3.9 -0.1	100.2 +0.3	close	Xmax 3.9 mm < 4 mm: lower excursion-limited SPL	+
Supravox 285 GMF vp2	48 +0.2	0.315 -0.01	172 +15	4 =	100.5 +0.6	close		+
Supravox 285 GMF vp1	47.2 -0.6	0.308 -0.02	174 +17	4 =	100.4 +0.5	close		+
Supravox 285 GMF vp JTR 2	47.6 -0.2	0.335 +0.01	186 +29	4 =	100.5 +0.6	close		+
Supravox 285 GMF vp wowo	50.2 +2.4	0.323 =	143 -14	3.7 -0.3	100.2 +0.3	close	Xmax 3.7 mm < 4 mm: lower excursion-limited SPL	+
Supravox 285 GMF vp8	52.2 +4.4	0.349 +0.02	152.5 -4.5	4 =	100.7 +0.8	close		+
Supravox 285 GMF v2008	47 -0.8	0.372 +0.04	150 -7	4 =	98.9 -1	close		+
Supravox 285 GMF v2012	47 -0.8	0.372 +0.04	150 -7	4 =	98.9 -1	close		+
Supravox 285-2000EXC_09V	53 +5.2	0.309 -0.02	156 -1	3.8 -0.2	101.5 +1.6	close	Xmax 3.8 mm < 4 mm: lower excursion-limited SPL	+

Compare the closest 3 against the 285 GMF v2019 →

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.