Oberton 18B500
Thiele-Small parameters
| Nominal size | 18" |
|---|---|
| Impedance | 8 Ω |
| Fs | 34.9 Hz |
| Qts | 0.276 |
| Qes | 0.284 |
| Qms | 9.24 |
| Vas | 243.9 L |
| Sd | 1110 cm² |
| Xmax | 6.7 mm |
| Re | 5.1 Ω |
| Bl | 24.1 T·m |
| Mms | 147.3 g |
| Pe | 600 W |
| Sensitivity | 99.6 dB |
Alignment hint
| EBP | 123 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 43.8 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 |
|---|---|---|---|---|---|---|---|---|
| PHL Audio 7010 | 35 +0.1 | 0.288 +0.01 | 260 +16.1 | 7.7 +1 | 99.1 -0.5 | close | + | |
| PHL Audio 7070 | 35 +0.1 | 0.288 +0.01 | 260 +16.1 | 7.7 +1 | 99.1 -0.5 | close | + | |
| 18 Sound 18LW1250 | 35 +0.1 | 0.271 -0.01 | 268 +24.1 | 8.7 +2 | 100.2 +0.6 | close | + | |
| Monacor SP-18/1000HP | 35 +0.1 | 0.282 +0.01 | 219 -24.9 | 7.9 +1.2 | 98.8 -0.8 | close | + | |
| Oberton 18FBR700 | 35.56 +0.66 | 0.271 -0.01 | 231.3 -12.6 | 8 +1.3 | 98 -1.6 | close | + | |
| Faital PRO W18N8-1000 | 35 +0.1 | 0.273 = | 211.8 -32.1 | 7.8 +1.1 | 98.8 -0.8 | close | + | |
| Mercuriale PAR 465 M0 | 35 +0.1 | 0.265 -0.01 | 251 +7.1 | 6 -0.7 | 98.5 -1.1 | close | Xmax 6 mm < 6.7 mm: lower excursion-limited SPL | + |
| B&C 18 PZB 100 (prodance) | 33.7 -1.2 | 0.289 +0.01 | 263 +19.1 | 7.6 +0.9 | 99 -0.6 | close | + | |
| PHL Audio 7321ND | 33 -1.9 | 0.278 = | 230 -13.9 | 8.5 +1.8 | 98.3 -1.3 | close | + | |
| PD PD 188 | 37.4 +2.5 | 0.279 = | 224.4 -19.5 | 6 -0.7 | 99.6 = | close | Xmax 6 mm < 6.7 mm: lower excursion-limited SPL | + |
Compare the closest 3 against the 18B500 →
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.