Beyma 18G550
Thiele-Small parameters
| Nominal size | 18" |
|---|---|
| Impedance | 8 Ω |
| Fs | 36 Hz |
| Qts | 0.374 |
| Qes | 0.39 |
| Qms | 8.88 |
| Vas | 210 L |
| Sd | 1200 cm² |
| Xmax | 8.1 mm |
| Re | 5.25 Ω |
| Bl | 23.9 T·m |
| Mms | 187.9 g |
| Pe | 900 W |
| Sensitivity | 97.8 dB |
Alignment hint
| EBP | 92 · flexible |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 81.6 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 |
|---|---|---|---|---|---|---|---|---|
| Beyma 18G550 v2015 | 36 = | 0.374 = | 210 = | 8.1 = | 97.8 = | close | + | |
| Faital PRO 18HP1060 | 35 -1 | 0.37 = | 200.3 -9.7 | 12.45 +4.35 | 98 +0.2 | close | + | |
| P.Audio FL-18ELF | 36 = | 0.39 +0.02 | 209.8 -0.2 | 8 -0.1 | 95.6 -2.2 | close | Xmax 8 mm < 8.1 mm: lower excursion-limited SPL | + |
| B&C 18 TBX 100 | 34 -2 | 0.352 -0.02 | 212 +2 | 9 +0.9 | 97.5 -0.3 | close | + | |
| Sica 18 S 4 PL | 36.2 +0.2 | 0.39 +0.02 | 189 -21 | 8 -0.1 | 97.3 -0.5 | close | Xmax 8 mm < 8.1 mm: lower excursion-limited SPL | + |
| Beyma 18LEX1600/ND-8 | 35 -1 | 0.39 +0.02 | 205 -5 | 10.4 +2.3 | 96.8 -1 | close | + | |
| B&C 18NBX100 | 35 -1 | 0.38 +0.01 | 198 -12 | 10 +1.9 | 96.5 -1.3 | close | + | |
| B&C 18 RBX 100 | 35 -1 | 0.343 -0.03 | 220 +10 | 8.3 +0.2 | 98.1 +0.3 | close | + | |
| B&C 18PZW100 | 37 +1 | 0.36 -0.01 | 186 -24 | 8 -0.1 | 97.6 -0.2 | close | Xmax 8 mm < 8.1 mm: lower excursion-limited SPL | + |
| B&C 18 TBX 100 (prodance) | 36.6 +0.6 | 0.406 +0.03 | 198 -12 | 9 +0.9 | 97.4 -0.4 | close | + |
Compare the closest 3 against the 18G550 →
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.