JBL 2023H

12" · 8 Ω · 300 W · 99.8 dB

Thiele-Small parameters

Nominal size	12"
Impedance	8 Ω
Fs	67 Hz
Qts	0.347
Qes	0.37
Qms	5.5
Vas	48.8 L
Sd	517 cm²
Xmax	3.7 mm
Re	5.25 Ω
Bl	16.1 T·m
Mms	43.3 g
Pe	300 W
Sensitivity	99.8 dB

Alignment hint

EBP	181 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 15.5 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
RCF L 12P520	65 -2	0.355 +0.01	49 +0.2	3.4 -0.3	99.6 -0.2	close	Xmax 3.4 mm < 3.7 mm: lower excursion-limited SPL	+
RCF L12P520	65 -2	0.37 +0.02	47 -1.8	4 +0.3	97 -2.8	close	125 W vs 300 W: lower power handling	+
RCF L 12P540	59 -8	0.349 =	45 -3.8	4.3 +0.6	97.6 -2.2	close		+
LaVoce WAF122.50	59 -8	0.365 +0.02	47 -1.8	4 +0.3	97.4 -2.4	close		+
Turbosound TS-12W350/8W	55 -12	0.347 =	49 +0.2	4 +0.3	96.9 -2.9	close		+
Electro-Voice DL12BFH	60 -7	0.307 -0.04	55 +6.2	4 +0.3	100.3 +0.5	close		+
PD PD 124NR1	58 -9	0.354 +0.01	49 +0.2	7.4 +3.7	97.3 -2.5	close		+
Precision Devices PD 124NR1	58 -9	0.354 +0.01	49 +0.2	7.4 +3.7	97.3 -2.5	close		+
HH Electronics B12L	64 -3	0.382 +0.04	44.8 -4	3.4 -0.3	97.4 -2.4	close	200 W vs 300 W: lower power handling · Xmax 3.4 mm < 3.7 mm: lower excursion-limited SPL	+
RCF L 12/854K	67 =	0.382 +0.04	58 +9.2	3 -0.7	100.1 +0.3	close	200 W vs 300 W: lower power handling · Xmax 3 mm < 3.7 mm: lower excursion-limited SPL	+

Compare the closest 3 against the 2023H →

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.