JBL 2240H
Thiele-Small parameters
| Nominal size | 18" |
|---|---|
| Impedance | 8 Ω |
| Fs | 30 Hz |
| Qts | 0.224 |
| Qes | 0.25 |
| Qms | 2.2 |
| Vas | 481.4 L |
| Sd | 1297.4 cm² |
| Xmax | 5.1 mm |
| Re | 6 Ω |
| Bl | 25 T·m |
| Mms | 138 g |
| Pe | 300 W |
| Sensitivity | 100.4 dB |
Alignment hint
| EBP | 120 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 53.7 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 |
|---|---|---|---|---|---|---|---|---|
| JBL 2240H/G | 30 = | 0.23 +0.01 | 480 -1.4 | 5.5 +0.4 | 99 -1.4 | close | + | |
| JBL 2240G | 30 = | 0.227 = | 481.4 = | 5.2 +0.1 | 104.2 +3.8 | close | 4 Ω vs 8 Ω: amp load changes | + |
| JBL E155-8 | 30 = | 0.2 -0.02 | 424.8 -56.6 | 5.1 = | 100.4 = | close | + | |
| RCF L 18P751 | 30 = | 0.238 +0.01 | 400 -81.4 | 5 -0.1 | 100.3 -0.1 | close | Xmax 5 mm < 5.1 mm: lower excursion-limited SPL | + |
| AE Speakers TD18H+ | 29 -1 | 0.221 = | 390 -91.4 | 7 +1.9 | 99.7 -0.7 | close | + | |
| AE Speakers TD18H+ 8 Ohms | 29 -1 | 0.221 = | 390 -91.4 | 7 +1.9 | 99 -1.4 | close | + | |
| McCauley B1840 | 28 -2 | 0.231 +0.01 | 405 -76.4 | 4.8 -0.3 | 99.1 -1.3 | close | Xmax 4.8 mm < 5.1 mm: lower excursion-limited SPL | + |
| PD PD 184C01 | 30 = | 0.227 = | 337.1 -144.3 | 7.8 +2.7 | 100.2 -0.2 | close | + | |
| Precision Devices PD 184C01 | 30 = | 0.227 = | 337.1 -144.3 | 7.8 +2.7 | 100.2 -0.2 | close | + | |
| JBL E155-4 | 30 = | 0.2 -0.02 | 424.8 -56.6 | 5.1 = | 104.2 +3.8 | close | 4 Ω vs 8 Ω: amp load changes | + |
Compare the closest 3 against the 2240H →
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.