McCauley B1840
Thiele-Small parameters
| Nominal size | 18" |
|---|---|
| Impedance | 8 Ω |
| Fs | 28 Hz |
| Qts | 0.231 |
| Qes | 0.236 |
| Qms | 10.8 |
| Vas | 405 L |
| Sd | 1290 cm² |
| Xmax | 4.8 mm |
| Re | 5.8 Ω |
| Bl | 28.4 T·m |
| Mms | 186.1 g |
| Pe | 400 W |
| Sensitivity | 99.1 dB |
Alignment hint
| EBP | 119 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 48.4 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 |
|---|---|---|---|---|---|---|---|---|
| Eminence OMEGA PRO 18 | 28 = | 0.239 +0.01 | 354 -51 | 4.8 = | 98.9 -0.2 | close | + | |
| PD PD 182 | 28 = | 0.238 +0.01 | 391 -14 | 8.2 +3.4 | 98.7 -0.4 | close | + | |
| Precision Devices PD 182 | 28 = | 0.238 +0.01 | 391 -14 | 8.2 +3.4 | 98.7 -0.4 | close | + | |
| RCF L 18P751 | 30 +2 | 0.238 +0.01 | 400 -5 | 5 +0.2 | 100.3 +1.2 | close | + | |
| AE Speakers TD18H+ 8 Ohms | 29 +1 | 0.221 -0.01 | 390 -15 | 7 +2.2 | 99 -0.1 | close | + | |
| Eminence PS18-6008 vp | 28.1 +0.1 | 0.239 +0.01 | 354.1 -50.9 | 5.5 +0.7 | 98.9 -0.2 | close | 300 W vs 400 W: lower power handling | + |
| AE Speakers TD18H+ | 29 +1 | 0.221 -0.01 | 390 -15 | 7 +2.2 | 99.7 +0.6 | close | + | |
| JBL 2240H/G | 30 +2 | 0.23 = | 480 +75 | 5.5 +0.7 | 99 -0.1 | close | 300 W vs 400 W: lower power handling | + |
| B&C 18 PZB 46 vp | 28.8 +0.8 | 0.227 = | 346.4 -58.6 | 8.1 +3.3 | 99 -0.1 | close | + | |
| Celestion FTR18-4080F | 28 = | 0.265 +0.03 | 383.3 -21.7 | 6 +1.2 | 98.6 -0.5 | close | + |
Compare the closest 3 against the B1840 →
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.