B&C 18RS115
Thiele-Small parameters
| Nominal size | 18" |
|---|---|
| Impedance | 8 Ω |
| Fs | 33 Hz |
| Qts | 0.22 |
| Qes | 0.23 |
| Qms | 9 |
| Vas | 125 L |
| Sd | 1210 cm² |
| Xmax | 23.5 mm |
| Re | 4.5 Ω |
| Bl | 40 T·m |
| Mms | 391 g |
| Pe | 2000 W |
| Sensitivity | 97.4 dB |
Alignment hint
| EBP | 143 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 13.4 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 |
|---|---|---|---|---|---|---|---|---|
| B&C 18DS100 | 32 -1 | 0.24 +0.02 | 157 +32 | 14 -9.5 | 98 +0.6 | usable | 4 Ω vs 8 Ω: amp load changes · 1500 W vs 2000 W: lower power handling · Xmax 14 mm < 23.5 mm: lower excursion-limited SPL | + |
| B&C 18DS115 | 30 -3 | 0.2 -0.02 | 168 +43 | 16.5 -7 | 98 +0.6 | usable | Xmax 16.5 mm < 23.5 mm: lower excursion-limited SPL | + |
| 18 Sound 18iD200 | 29 -4 | 0.17 -0.05 | 136 +11 | 18 -5.5 | 95 -2.4 | usable | 2 Ω vs 8 Ω: amp load changes · Xmax 18 mm < 23.5 mm: lower excursion-limited SPL | + |
| 18 Sound 18iDSDS | 29 -4 | 0.17 -0.05 | 136 +11 | 18 -5.5 | 95 -2.4 | usable | 2 Ω vs 8 Ω: amp load changes · Xmax 18 mm < 23.5 mm: lower excursion-limited SPL | + |
| B&C 18DS100 | 34 +1 | 0.29 +0.07 | 155 +30 | 14.5 -9 | 97.5 +0.1 | usable | 1500 W vs 2000 W: lower power handling · Xmax 14.5 mm < 23.5 mm: lower excursion-limited SPL | + |
| 18 Sound 18NLW4500 | 37 +4 | 0.31 +0.09 | 127 +2 | 14.75 -8.75 | 96.5 -0.9 | usable | 4 Ω vs 8 Ω: amp load changes · Xmax 14.75 mm < 23.5 mm: lower excursion-limited SPL | + |
| 18 Sound 18NLW9601 | 39 +6 | 0.28 +0.06 | 120 -5 | 14 -9.5 | 96 -1.4 | usable | Xmax 14 mm < 23.5 mm: lower excursion-limited SPL | + |
| Beyma 18QLEX1600Fe | 30 -3 | 0.23 +0.01 | 195 +70 | 13 -10.5 | 97 -0.4 | usable | Xmax 13 mm < 23.5 mm: lower excursion-limited SPL | + |
| Precision Devices PD.185N02 | 35.2 +2.2 | 0.24 +0.02 | 178.28 +53.28 | 12 -11.5 | 96.8 -0.6 | usable | 1100 W vs 2000 W: lower power handling · Xmax 12 mm < 23.5 mm: lower excursion-limited SPL | + |
| 18 Sound 18NLW9601 | 38 +5 | 0.28 +0.06 | 111 -14 | 14 -9.5 | 96 -1.4 | usable | 4 Ω vs 8 Ω: amp load changes · Xmax 14 mm < 23.5 mm: lower excursion-limited SPL | + |
Compare the closest 3 against the 18RS115 →
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.