JBL 2245H

18" · 8 Ω · 300 W · 97.2 dB

Thiele-Small parameters

Nominal size	18"
Impedance	8 Ω
Fs	20 Hz
Qts	0.24
Qes	0.27
Qms	2.2
Vas	821.2 L
Sd	1297.4 cm²
Xmax	8.5 mm
Re	5.8 Ω
Bl	22.2 T·m
Mms	182 g
Pe	300 W
Sensitivity	97.2 dB

Alignment hint

EBP	74 · flexible
Sealed Vb (Qtc ≈ 0.71)	≈ 106.9 L

EBP 50-100: works in either a sealed or ported 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 LP 18/551	21.7 +1.7	0.222 -0.02	760 -61.2	10 +1.5	98.8 +1.6	close		+
RCF L 18P200KN	22.3 +2.3	0.265 +0.03	550 -271.2	9 +0.5	96.4 -0.8	usable		+
Eminence 111712	21.6 +1.6	0.288 +0.05	736.2 -85	5.8 -2.7	97.1 -0.1	usable	Xmax 5.8 mm < 8.5 mm: lower excursion-limited SPL	+
McCauley B1860	23.9 +3.9	0.244 =	723.6 -97.6	5.5 -3	99.1 +1.9	usable	Xmax 5.5 mm < 8.5 mm: lower excursion-limited SPL	+
Altec 3184	24 +4	0.219 -0.02	690.9 -130.3	6.4 -2.1	98.5 +1.3	usable	Xmax 6.4 mm < 8.5 mm: lower excursion-limited SPL	+
Great Plains Audio 3184 GPA	24 +4	0.219 -0.02	690.9 -130.3	6.4 -2.1	98.5 +1.3	usable	Xmax 6.4 mm < 8.5 mm: lower excursion-limited SPL	+
McCauley 6174	20 =	0.336 +0.1	733.4 -87.8	15.2 +6.7	95.4 -1.8	usable		+
Altec 3182 vp	20.3 +0.3	0.343 +0.1	1159.7 +338.5	10.2 +1.7	96.5 -0.7	usable	180 W vs 300 W: lower power handling	+
Monacor SPH-450TC vp série	20 =	0.248 +0.01	480 -341.2	6.5 -2	93.8 -3.4	usable	Xmax 6.5 mm < 8.5 mm: lower excursion-limited SPL	+
Fostex FW 505	20 =	0.404 +0.16	860 +38.8	8.5 =	94.3 -2.9	usable	150 W vs 300 W: lower power handling	+

Compare the closest 3 against the 2245H →

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.