Beyma SM118/N
Thiele-Small parameters
| Nominal size | 18" |
|---|---|
| Impedance | 8 Ω |
| Fs | 36 Hz |
| Qts | 0.492 |
| Qes | 0.53 |
| Qms | 6.83 |
| Vas | 300 L |
| Sd | 1150 cm² |
| Xmax | 5.5 mm |
| Re | 6.4 Ω |
| Bl | 18.2 T·m |
| Mms | 120.8 g |
| Pe | 400 W |
| Sensitivity | 97.2 dB |
Alignment hint
| EBP | 68 · flexible |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 281.5 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 |
|---|---|---|---|---|---|---|---|---|
| Monacor SP-46A/500BS | 36 = | 0.485 -0.01 | 250 -50 | 6 +0.5 | 96.6 -0.6 | close | + | |
| MC Kenzie C18.500BS | 37 +1 | 0.484 -0.01 | 252 -48 | 6.5 +1 | 96.4 -0.8 | close | + | |
| P.Audio E18-400S | 33 -3 | 0.498 +0.01 | 284.4 -15.6 | 5 -0.5 | 96.1 -1.1 | close | Xmax 5 mm < 5.5 mm: lower excursion-limited SPL | + |
| Beyma 18LX60V2 | 35 -1 | 0.485 -0.01 | 236.5 -63.5 | 8 +2.5 | 97 -0.2 | close | + | |
| Selenium 18SWS1100 | 34 -2 | 0.447 -0.04 | 316 +16 | 9.3 +3.8 | 97.8 +0.6 | close | + | |
| Eminence KILOMAX 18 | 33.8 -2.2 | 0.527 +0.04 | 281.4 -18.6 | 10 +4.5 | 96.4 -0.8 | close | + | |
| Radian 2218-8 | 33.8 -2.2 | 0.518 +0.03 | 282.9 -17.1 | 9 +3.5 | 95.5 -1.7 | close | + | |
| Peavey PRO RIDER 18 1808-8 AL CP | 36 = | 0.55 +0.06 | 296.475 -3.52 | 4.6 -0.9 | 95.6 -1.6 | close | Xmax 4.6 mm < 5.5 mm: lower excursion-limited SPL | + |
| Radian 2218 | 33.8 -2.2 | 0.525 +0.03 | 286 -14 | 9 +3.5 | 95.5 -1.7 | close | + | |
| Peavey 1801-8 | 40.4 +4.4 | 0.523 +0.03 | 284.9 -15.1 | 5 -0.5 | 98.2 +1 | close | Xmax 5 mm < 5.5 mm: lower excursion-limited SPL | + |
Compare the closest 3 against the SM118/N →
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.