Beyma 12GU
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 70 Hz |
| Qts | 0.475 |
| Qes | 0.551 |
| Qms | 3.46 |
| Vas | 60 L |
| Sd | 530 cm² |
| Xmax | 2 mm |
| Re | 7 Ω |
| Bl | 13.8 T·m |
| Mms | 33.9 g |
| Pe | 80 W |
| Sensitivity | 98.3 dB |
Alignment hint
| EBP | 127 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 49.3 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 |
|---|---|---|---|---|---|---|---|---|
| Celestion VINTAGE 30 | 75 +5 | 0.531 +0.06 | 60 = | 2.1 +0.1 | 96.5 -1.8 | close | 16 Ω vs 8 Ω: amp load changes · 60 W vs 80 W: lower power handling | + |
| Celestion TRUVOX 1225 | 63 -7 | 0.5 +0.03 | 54.5 -5.5 | 2.5 +0.5 | 97.9 -0.4 | close | + | |
| Celestion K12H-200TC | 60 -10 | 0.517 +0.04 | 60.3 +0.3 | 2 = | 97 -1.3 | close | + | |
| Celestion TF 1225 | 63 -7 | 0.5 +0.03 | 54.5 -5.5 | 3.5 +1.5 | 97.9 -0.4 | close | + | |
| RCF L12/854K | 67 -3 | 0.38 -0.09 | 58 -2 | 2 = | 97.9 -0.4 | close | + | |
| JB Systems PWX12-200 | 59.4 -10.6 | 0.474 = | 55.5 -4.5 | 3.6 +1.6 | 96.5 -1.8 | close | + | |
| Peerless FSL-1225R02-08 | 59 -11 | 0.407 -0.07 | 59.4 -0.6 | 2.5 +0.5 | 98 -0.3 | close | + | |
| JBL MI-12 | 65 -5 | 0.459 -0.02 | 76.5 +16.5 | 3.1 +1.1 | 99.1 +0.8 | close | + | |
| B&C 12 NCX | 59 -11 | 0.51 +0.04 | 64 +4 | 3 +1 | 96.9 -1.4 | usable | + | |
| SICA 12 C 2 CP | 63 -7 | 0.509 +0.03 | 70 +10 | 4.2 +2.2 | 98 -0.3 | usable | + |
Compare the closest 3 against the 12GU →
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.