RCF MB12N407
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 48 Hz |
| Qts | 0.194 |
| Qes | 0.2 |
| Qms | 6.2 |
| Vas | 50 L |
| Sd | 530 cm² |
| Xmax | 4.7 mm |
| Re | 5.1 Ω |
| Bl | 25.8 T·m |
| Mms | 86.6 g |
| Pe | 700 W |
| Sensitivity | 98.4 dB |
Alignment hint
| EBP | 240 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 4.1 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 |
|---|---|---|---|---|---|---|---|---|
| RCF MB 12N407 | 48 = | 0.194 = | 50 = | 4.7 = | 98.4 = | close | + | |
| RCF LF 12N401 | 48 = | 0.205 +0.01 | 50 = | 5.2 +0.5 | 97.8 -0.6 | close | + | |
| Sica 12 F 4 CP | 46 -2 | 0.2 +0.01 | 52 +2 | 6 +1.3 | 97.8 -0.6 | close | + | |
| BMS 12C362 | 47.5 -0.5 | 0.182 -0.01 | 56.5 +6.5 | 4.4 -0.3 | 98.5 +0.1 | close | 500 W vs 700 W: lower power handling · Xmax 4.4 mm < 4.7 mm: lower excursion-limited SPL | + |
| RCF MB 12N405 | 52 +4 | 0.203 +0.01 | 53 +3 | 5.7 +1 | 99.5 +1.1 | close | + | |
| B&C 12CL76 | 48 = | 0.21 +0.02 | 59 +9 | 6 +1.3 | 98.5 +0.1 | close | 350 W vs 700 W: lower power handling | + |
| RCF LF 12X401 | 45 -3 | 0.211 +0.02 | 50 = | 6.1 +1.4 | 97 -1.4 | close | + | |
| B&C 12FW76 | 54 +6 | 0.18 -0.01 | 48.5 -1.5 | 7 +2.3 | 99 +0.6 | close | 4 Ω vs 8 Ω: amp load changes · 500 W vs 700 W: lower power handling | + |
| RCF CX12N351 | 58 +10 | 0.2 +0.01 | 47 -3 | 6 +1.3 | 98.2 -0.2 | close | 90 W vs 700 W: lower power handling | + |
| Beyma 12"P80/Fe V2 | 48 = | 0.21 +0.02 | 61 +11 | 7.5 +2.8 | 99 +0.6 | close | + |
Compare the closest 3 against the MB12N407 →
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.