Beyma 12G250/R
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 42 Hz |
| Qts | 0.173 |
| Qes | 0.18 |
| Qms | 4.24 |
| Vas | 106 L |
| Sd | 530 cm² |
| Xmax | 2 mm |
| Re | 6.2 Ω |
| Bl | 22 T·m |
| Mms | 53.3 g |
| Pe | 200 W |
| Sensitivity | 99.5 dB |
Alignment hint
| EBP | 233 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 6.7 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 |
|---|---|---|---|---|---|---|---|---|
| Ciare M320.75 C/Fx - 08 | 40 -2 | 0.155 -0.02 | 106 = | 2.3 +0.3 | 99.1 -0.4 | close | 100 W vs 200 W: lower power handling | + |
| Beyma 12G200 | 40 -2 | 0.184 +0.01 | 108 +2 | 3 +1 | 98.3 -1.2 | close | + | |
| BMS 12N810 | 40.7 -1.3 | 0.16 -0.01 | 89.6 -16.4 | 2.5 +0.5 | 100 +0.5 | close | + | |
| 18 Sound 12MB600 | 44 +2 | 0.18 +0.01 | 115 +9 | 4.5 +2.5 | 101 +1.5 | close | + | |
| Beyma LIBERTY | 37 -5 | 0.167 -0.01 | 130 +24 | 2.5 +0.5 | 99.3 -0.2 | close | + | |
| B&C 12 HCX 76 | 42 = | 0.195 +0.02 | 118.9 +12.9 | 4 +2 | 100.5 +1 | close | + | |
| B&C 12 CXN 76 | 42 = | 0.195 +0.02 | 120 +14 | 4 +2 | 100.5 +1 | close | + | |
| B&C 12PE32 | 51 +9 | 0.18 +0.01 | 101 -5 | 2.8 +0.8 | 101 +1.5 | close | + | |
| JBL 2202J | 50 +8 | 0.173 = | 87.8 -18.2 | 2.6 +0.6 | 98.4 -1.1 | close | 16 Ω vs 8 Ω: amp load changes · 150 W vs 200 W: lower power handling | + |
| Beyma 12M300 | 45 +3 | 0.199 +0.03 | 115 +9 | 3.8 +1.8 | 100.1 +0.6 | usable | + |
Compare the closest 3 against the 12G250/R →
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.