Monacor SP-312CX
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 55 Hz |
| Qts | 0.328 |
| Qes | 0.36 |
| Qms | 3.74 |
| Vas | 64 L |
| Sd | 540 cm² |
| Xmax | 3 mm |
| Re | 5.6 Ω |
| Bl | 17 T·m |
| Mms | 53.5 g |
| Pe | 250 W |
| Sensitivity | 98.2 dB |
Alignment hint
| EBP | 153 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 17.5 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 |
|---|---|---|---|---|---|---|---|---|
| Fostex L 363 B | 55 = | 0.33 = | 57 -7 | 2.9 -0.1 | 97 -1.2 | close | 150 W vs 250 W: lower power handling · Xmax 2.9 mm < 3 mm: lower excursion-limited SPL | + |
| 18 Sound 12W750 | 55 = | 0.33 = | 61 -3 | 8 +5 | 98 -0.2 | close | 16 Ω vs 8 Ω: amp load changes | + |
| B&C 12 FW 64 | 55 = | 0.293 -0.04 | 64 = | 3.7 +0.7 | 99.1 +0.9 | close | + | |
| B&C 12 CL 64 | 52 -3 | 0.298 -0.03 | 64 = | 3.9 +0.9 | 98.1 -0.1 | close | + | |
| Eminence PE 12 2008 | 56 +1 | 0.285 -0.04 | 61.9 -2.1 | 3 = | 98.5 +0.3 | close | + | |
| Eminence PS12-200 | 56 +1 | 0.285 -0.04 | 61.7 -2.3 | 3 = | 98.5 +0.3 | close | + | |
| B&C 12CL64 | 52 -3 | 0.3 -0.03 | 64 = | 4.5 +1.5 | 98 -0.2 | close | + | |
| B&C 12FW64 | 55 = | 0.29 -0.04 | 64 = | 5 +2 | 98 -0.2 | close | + | |
| JBL 2206H | 52 -3 | 0.316 -0.01 | 62.3 -1.7 | 5.9 +2.9 | 97.9 -0.3 | close | + | |
| Elder Audio 12LB075-8N | 52 -3 | 0.3 -0.03 | 66.8 +2.8 | 4 +1 | 98 -0.2 | close | + |
Compare the closest 3 against the SP-312CX →
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.