JBL 2240H/G

18" · 8 Ω · 300 W · 99 dB · datasheet ↗

Thiele-Small parameters

Nominal size	18"
Impedance	8 Ω
Fs	30 Hz
Qts	0.23
Qes	0.25
Qms	2.2
Vas	480 L
Sd	1250 cm²
Xmax	5.5 mm
Re	6 Ω
Bl	25 T·m
Mms	130 g
Pe	300 W
Sensitivity	99 dB

Alignment hint

EBP	120 · ported
Sealed Vb (Qtc ≈ 0.71)	≈ 56.8 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 2240H	30 =	0.224 -0.01	481.4 +1.4	5.1 -0.4	100.4 +1.4	close	Xmax 5.1 mm < 5.5 mm: lower excursion-limited SPL	+
AE Speakers TD18H+ 8 Ohms	29 -1	0.221 -0.01	390 -90	7 +1.5	99 =	close		+
JBL 2240G	30 =	0.227 =	481.4 +1.4	5.2 -0.3	104.2 +5.2	close	4 Ω vs 8 Ω: amp load changes · Xmax 5.2 mm < 5.5 mm: lower excursion-limited SPL	+
McCauley B1840	28 -2	0.231 =	405 -75	4.8 -0.7	99.1 +0.1	close	Xmax 4.8 mm < 5.5 mm: lower excursion-limited SPL	+
RCF L 18P751	30 =	0.238 +0.01	400 -80	5 -0.5	100.3 +1.3	close	Xmax 5 mm < 5.5 mm: lower excursion-limited SPL	+
AE Speakers TD18H+	29 -1	0.221 -0.01	390 -90	7 +1.5	99.7 +0.7	close		+
PD PD 182	28 -2	0.238 +0.01	391 -89	8.2 +2.7	98.7 -0.3	close		+
Precision Devices PD 182	28 -2	0.238 +0.01	391 -89	8.2 +2.7	98.7 -0.3	close		+
Eminence PS18-6008 vp	28.1 -1.9	0.239 +0.01	354.1 -125.9	5.5 =	98.9 -0.1	close		+
Dayton Audio PA460-8 18	26.2 -3.8	0.269 +0.04	473.5 -6.5	6 +0.5	98.6 -0.4	close		+

Compare the closest 3 against the 2240H/G →

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.