JBL E155-8
Thiele-Small parameters
| Nominal size | 18" |
|---|---|
| Impedance | 8 Ω |
| Fs | 30 Hz |
| Qts | 0.2 |
| Qes | 0.22 |
| Qms | 2.2 |
| Vas | 424.8 L |
| Sd | 1140 cm² |
| Xmax | 5.1 mm |
| Re | 6 Ω |
| Bl | 24.9 T·m |
| Mms | 120.7 g |
| Pe | 300 W |
| Sensitivity | 100.4 dB |
Alignment hint
| EBP | 136 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 36.9 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 E155-4 | 30 = | 0.2 = | 424.8 = | 5.1 = | 104.2 +3.8 | close | 4 Ω vs 8 Ω: amp load changes | + |
| JBL 2240H | 30 = | 0.224 +0.02 | 481.4 +56.6 | 5.1 = | 100.4 = | close | + | |
| RCF L 18P751 | 30 = | 0.238 +0.04 | 400 -24.8 | 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 +0.02 | 390 -34.8 | 7 +1.9 | 99.7 -0.7 | close | + | |
| JBL 2243H | 30 = | 0.192 -0.01 | 338.1 -86.7 | 4.3 -0.8 | 100.4 = | close | Xmax 4.3 mm < 5.1 mm: lower excursion-limited SPL | + |
| AE Speakers TD18H+ 8 Ohms | 29 -1 | 0.221 +0.02 | 390 -34.8 | 7 +1.9 | 99 -1.4 | close | + | |
| JBL 2240H/G | 30 = | 0.23 +0.03 | 480 +55.2 | 5.5 +0.4 | 99 -1.4 | close | + | |
| McCauley B1840 | 28 -2 | 0.231 +0.03 | 405 -19.8 | 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 +0.03 | 337.1 -87.7 | 7.8 +2.7 | 100.2 -0.2 | close | + | |
| Precision Devices PD 184C01 | 30 = | 0.227 +0.03 | 337.1 -87.7 | 7.8 +2.7 | 100.2 -0.2 | close | + |
Compare the closest 3 against the E155-8 →
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.