RCF MB 12N405
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 52 Hz |
| Qts | 0.203 |
| Qes | 0.21 |
| Qms | 6 |
| Vas | 53 L |
| Sd | 530 cm² |
| Xmax | 5.7 mm |
| Re | 5 Ω |
| Bl | 23.3 T·m |
| Mms | 69.6 g |
| Pe | 1000 W |
| Sensitivity | 99.5 dB |
Alignment hint
| EBP | 248 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 4.8 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 |
|---|---|---|---|---|---|---|---|---|
| Sica 12 F 4 CP | 46 -6 | 0.2 = | 52 -1 | 6 +0.3 | 97.8 -1.7 | close | 700 W vs 1000 W: lower power handling | + |
| Precision Devices PD121 | 59 +7 | 0.201 = | 54 +1 | 5 -0.7 | 100 +0.5 | close | 16 Ω vs 8 Ω: amp load changes · 300 W vs 1000 W: lower power handling · Xmax 5 mm < 5.7 mm: lower excursion-limited SPL | + |
| B&C 12CL76 | 48 -4 | 0.21 +0.01 | 59 +6 | 6 +0.3 | 98.5 -1 | close | 350 W vs 1000 W: lower power handling | + |
| RCF LF 12N401 | 48 -4 | 0.205 = | 50 -3 | 5.2 -0.5 | 97.8 -1.7 | close | Xmax 5.2 mm < 5.7 mm: lower excursion-limited SPL | + |
| RCF CX12N351 | 58 +6 | 0.2 = | 47 -6 | 6 +0.3 | 98.2 -1.3 | close | 90 W vs 1000 W: lower power handling | + |
| Beyma 12"P80/Fe V2 | 48 -4 | 0.21 +0.01 | 61 +8 | 7.5 +1.8 | 99 -0.5 | close | 700 W vs 1000 W: lower power handling | + |
| 18 Sound 12ND940 | 49 -3 | 0.2 = | 64.8 +11.8 | 7.6 +1.9 | 100 +0.5 | close | 600 W vs 1000 W: lower power handling | + |
| B&C 12FW76 | 54 +2 | 0.18 -0.02 | 48.5 -4.5 | 7 +1.3 | 99 -0.5 | close | 4 Ω vs 8 Ω: amp load changes · 500 W vs 1000 W: lower power handling | + |
| Beyma 12P80FE V2 | 50 -2 | 0.201 = | 66.8 +13.8 | 5.2 -0.5 | 99.9 +0.4 | close | 700 W vs 1000 W: lower power handling · Xmax 5.2 mm < 5.7 mm: lower excursion-limited SPL | + |
| RCF MB 12N351 | 55 +3 | 0.201 = | 61 +8 | 4.7 -1 | 100.4 +0.9 | close | 650 W vs 1000 W: lower power handling · Xmax 4.7 mm < 5.7 mm: lower excursion-limited SPL | + |
Compare the closest 3 against the MB 12N405 →
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.