JBL D131
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 50 Hz |
| Qts | 0.176 |
| Qes | 0.18 |
| Qms | 8.5 |
| Vas | 127.4 L |
| Sd | 527.1 cm² |
| Xmax | 0.8 mm |
| Re | 6.3 Ω |
| Bl | 18.5 T·m |
| Mms | 31 g |
| Pe | 75 W |
| Sensitivity | 102.5 dB |
Alignment hint
| EBP | 278 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 8.4 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 2130 | 50 = | 0.2 +0.02 | 121.8 -5.6 | 1.5 +0.7 | 101.6 -0.9 | close | + | |
| JBL K120 | 50 = | 0.2 +0.02 | 121.8 -5.6 | 2.7 +1.9 | 101.6 -0.9 | close | + | |
| Monacor SP-30PAX | 46 -4 | 0.164 -0.01 | 130 +2.6 | 3.9 +3.1 | 102.3 -0.2 | usable | + | |
| Beyma 12G300 | 44 -6 | 0.154 -0.02 | 142 +14.6 | 1.2 +0.4 | 102.5 = | usable | + | |
| Tannoy MONITOR RED 12 | 48.6 -1.4 | 0.154 -0.02 | 99.6 -27.8 | 1.2 +0.4 | 101.8 -0.7 | usable | 30 W vs 75 W: lower power handling | + |
| B&C 12 PE 32 | 51 +1 | 0.185 +0.01 | 101 -26.4 | 2.8 +2 | 101.9 -0.6 | usable | + | |
| B&C 12PE32 | 51 +1 | 0.18 = | 101 -26.4 | 2.8 +2 | 101 -1.5 | usable | + | |
| RCF L 12/584 | 49 -1 | 0.186 +0.01 | 100 -27.4 | 3 +2.2 | 101.6 -0.9 | usable | + | |
| JBL 2202A | 50 = | 0.171 = | 87.8 -39.6 | 2.1 +1.3 | 101.5 -1 | usable | + | |
| JBL 2202H | 50 = | 0.171 = | 87.8 -39.6 | 2.6 +1.8 | 101.5 -1 | usable | + |
Compare the closest 3 against the D131 →
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.