JBL 2020H

12" · 8 Ω · 400 W · 101.9 dB

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	60 Hz
Qts	0.228
Qes	0.24
Qms	4.6
Vas	65 L
Sd	530 cm²
Xmax	4 mm
Re	4.8 Ω
Bl	17.9 T·m
Mms	42.6 g
Pe	400 W
Sensitivity	101.9 dB

Alignment hint

EBP	250 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 7.5 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
JBL 2020 H	60 =	0.228 =	65 =	4 =	101.9 =	close		+
Beyma 12MI100	58 -2	0.221 -0.01	64 -1	4.2 +0.2	100.4 -1.5	close		+
JBL M121-8	60 =	0.235 +0.01	70.8 +5.8	3.6 -0.4	101.7 -0.2	close	300 W vs 400 W: lower power handling · Xmax 3.6 mm < 4 mm: lower excursion-limited SPL	+
Electro-Voice DL12X	56 -4	0.233 +0.01	77 +12	4.1 +0.1	100.7 -1.2	close	300 W vs 400 W: lower power handling	+
18 Sound 12ND830	58 -2	0.24 +0.01	63 -2	6.5 +2.5	99 -2.9	close	4 Ω vs 8 Ω: amp load changes	+
RCF 12 CX251	60 =	0.266 +0.04	62 -3	3.7 -0.3	100.6 -1.3	close	300 W vs 400 W: lower power handling · Xmax 3.7 mm < 4 mm: lower excursion-limited SPL	+
RCF CX 12N251	60 =	0.266 +0.04	62 -3	3.7 -0.3	100.6 -1.3	close	300 W vs 400 W: lower power handling · Xmax 3.7 mm < 4 mm: lower excursion-limited SPL	+
Beyma 12"MI100	58 -2	0.22 -0.01	64 -1	3 -1	100 -1.9	close	Xmax 3 mm < 4 mm: lower excursion-limited SPL	+
RCF MB 12N301	54 -6	0.24 +0.01	71 +6	4.9 +0.9	99.7 -2.2	close		+
RCF MB 12N351	55 -5	0.201 -0.03	61 -4	4.7 +0.7	100.4 -1.5	close		+

Compare the closest 3 against the 2020H →

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.