JBL K151
Thiele-Small parameters
| Nominal size | 18" |
|---|---|
| Impedance | 8 Ω |
| Fs | 30 Hz |
| Qts | 0.268 |
| Qes | 0.28 |
| Qms | 6 |
| Vas | 365.3 L |
| Sd | 1070 cm² |
| Xmax | 4.4 mm |
| Re | 6 Ω |
| Bl | 22.3 T·m |
| Mms | 123.7 g |
| Pe | 150 W |
| Sensitivity | 98.7 dB |
Alignment hint
| EBP | 107 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 61.3 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 |
|---|---|---|---|---|---|---|---|---|
| Monacor SP-46/500PA | 30 = | 0.271 = | 333 -32.3 | 5 +0.6 | 98.5 -0.2 | close | + | |
| Celestion FTR18-4080F | 28 -2 | 0.265 = | 383.3 +18 | 6 +1.6 | 98.6 -0.1 | close | + | |
| Rockford Fosgate SPP-184 | 27 -3 | 0.266 = | 353 -12.3 | 6 +1.6 | 99.2 +0.5 | close | 4 Ω vs 8 Ω: amp load changes | + |
| RCF LF 18G400 | 28 -2 | 0.273 +0.01 | 360 -5.3 | 9 +4.6 | 98.3 -0.4 | close | + | |
| Faital PRO 18FH510 | 30 = | 0.26 -0.01 | 391.4 +26.1 | 9.45 +5.05 | 98 -0.7 | close | 4 Ω vs 8 Ω: amp load changes | + |
| Electro-Voice EVX-180A | 29 -1 | 0.27 = | 416 +50.7 | 6.4 +2 | 99.5 +0.8 | close | + | |
| Electro-Voice EVX-180B | 29 -1 | 0.27 = | 416 +50.7 | 6.4 +2 | 99.5 +0.8 | close | + | |
| P.Audio E18-600A | 30.9 +0.9 | 0.309 +0.04 | 375.4 +10.1 | 5 +0.6 | 98.8 +0.1 | close | + | |
| RCF LF 18X400 | 28 -2 | 0.255 -0.01 | 360 -5.3 | 9 +4.6 | 98.6 -0.1 | close | + | |
| RCF LF18G400 | 28 -2 | 0.27 = | 360 -5.3 | 9 +4.6 | 97.5 -1.2 | close | + |
Compare the closest 3 against the K151 →
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.