JBL 2135
Thiele-Small parameters
| Nominal size | 15" |
|---|---|
| Impedance | 8 Ω |
| Fs | 40 Hz |
| Qts | 0.253 |
| Qes | 0.27 |
| Qms | 4 |
| Vas | 297.3 L |
| Sd | 894.2 cm² |
| Xmax | 1.5 mm |
| Re | 6.3 Ω |
| Bl | 18.7 T·m |
| Mms | 59.7 g |
| Pe | 125 W |
| Sensitivity | 101.5 dB |
Alignment hint
| EBP | 148 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 43.6 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 K130 | 40 = | 0.253 = | 297.3 = | 3.6 +2.1 | 101.5 = | close | + | |
| P.Audio WN-15N | 39.8 -0.2 | 0.251 = | 286.8 -10.5 | 3.5 +2 | 102.1 +0.6 | close | + | |
| Altec 421-8H-II | 38.7 -1.3 | 0.242 -0.01 | 261.4 -35.9 | 1.3 -0.2 | 101.1 -0.4 | close | Xmax 1.3 mm < 1.5 mm: lower excursion-limited SPL | + |
| Tesla ARM 9408 | 35 -5 | 0.248 -0.01 | 260 -37.3 | 1.5 = | 99.6 -1.9 | close | 75 W vs 125 W: lower power handling | + |
| Monacor SP-38/200PA | 38 -2 | 0.294 +0.04 | 287 -10.3 | 2 +0.5 | 100.3 -1.2 | close | + | |
| JBL D130 | 40 = | 0.253 = | 297.3 = | 0.8 -0.7 | 101.5 = | close | 75 W vs 125 W: lower power handling · Xmax 0.8 mm < 1.5 mm: lower excursion-limited SPL | + |
| Altec ER-15 | 42.1 +2.1 | 0.256 = | 217.2 -80.1 | 2.5 +1 | 101.5 = | close | + | |
| PD 153ERC002 | 38 -2 | 0.249 = | 263 -34.3 | 6.8 +5.3 | 100.9 -0.6 | usable | + | |
| Precision Devices 153ERC002 | 38 -2 | 0.249 = | 263 -34.3 | 6.8 +5.3 | 100.9 -0.6 | usable | + | |
| Altec 515-8G | 37 -3 | 0.269 +0.02 | 351.1 +53.8 | 3.5 +2 | 101.1 -0.4 | usable | 75 W vs 125 W: lower power handling | + |
Compare the closest 3 against the 2135 →
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.