Celestion CF1840JD
Thiele-Small parameters
| Nominal size | 18" |
|---|---|
| Impedance | 8 Ω |
| Fs | 44.2 Hz |
| Qts | 0.444 |
| Qes | 0.496 |
| Qms | 4.21 |
| Vas | 113.9 L |
| Sd | 1130 cm² |
| Xmax | 8.5 mm |
| Re | 5.29 Ω |
| Bl | 24.6 T·m |
| Mms | 203.7 g |
| Pe | 1800 W |
| Sensitivity | 96.8 dB |
Alignment hint
| EBP | 89 · flexible |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 74.1 L |
EBP 50-100: works in either a sealed or ported 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 |
|---|---|---|---|---|---|---|---|---|
| Selenium VULCANO 3.8 18SWV3.8 | 47.4 +3.2 | 0.5 +0.06 | 100.1 -13.8 | 11 +2.5 | 94.8 -2 | usable | 4 Ω vs 8 Ω: amp load changes | + |
| Sica 18 PF 4 | 38 -6.2 | 0.43 -0.01 | 147.3 +33.4 | 8 -0.5 | 96.3 -0.5 | usable | 1200 W vs 1800 W: lower power handling · Xmax 8 mm < 8.5 mm: lower excursion-limited SPL | + |
| LaVoce SAF184.02 | 38 -6.2 | 0.422 -0.02 | 150 +36.1 | 8.1 -0.4 | 96.9 +0.1 | usable | 1200 W vs 1800 W: lower power handling · Xmax 8.1 mm < 8.5 mm: lower excursion-limited SPL | + |
| Beyma 18P1200Nd vp1 | 43.8 -0.4 | 0.376 -0.07 | 116.9 +3 | 6.1 -2.4 | 98 +1.2 | usable | 1200 W vs 1800 W: lower power handling · Xmax 6.1 mm < 8.5 mm: lower excursion-limited SPL | + |
| DAS Audio 18SX | 39.2 -5 | 0.443 = | 171.9 +58 | 8 -0.5 | 96.4 -0.4 | usable | 1000 W vs 1800 W: lower power handling · Xmax 8 mm < 8.5 mm: lower excursion-limited SPL | + |
| LaVoce SAN184.02 | 38 -6.2 | 0.406 -0.04 | 150 +36.1 | 7.9 -0.6 | 96.8 = | usable | 1200 W vs 1800 W: lower power handling · Xmax 7.9 mm < 8.5 mm: lower excursion-limited SPL | + |
| LaVoce SAF184.04 | 37 -7.2 | 0.474 +0.03 | 143 +29.1 | 9.3 +0.8 | 95.2 -1.6 | usable | + | |
| Beyma 18P1200Nd vp459 | 43.8 -0.4 | 0.376 -0.07 | 124.9 +11 | 6.3 -2.2 | 98.3 +1.5 | usable | 1200 W vs 1800 W: lower power handling · Xmax 6.3 mm < 8.5 mm: lower excursion-limited SPL | + |
| PRV Audio 18SW3000 | 43.7 -0.5 | 0.342 -0.1 | 111.3 -2.6 | 6.7 -1.8 | 98.1 +1.3 | usable | Xmax 6.7 mm < 8.5 mm: lower excursion-limited SPL | + |
| JBL 18SWT3000(TORNADO) | 41 -3.2 | 0.55 +0.11 | 126 +12.1 | 10.6 +2.1 | 93.7 -3.1 | usable | 4 Ω vs 8 Ω: amp load changes | + |
Compare the closest 3 against the CF1840JD →
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.