Monacor SP-30PAX
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 46 Hz |
| Qts | 0.164 |
| Qes | 0.17 |
| Qms | 4.96 |
| Vas | 130 L |
| Sd | 505 cm² |
| Xmax | 3.9 mm |
| Re | 5.5 Ω |
| Bl | 17.5 T·m |
| Mms | 32.9 g |
| Pe | 200 W |
| Sensitivity | 102.3 dB |
Alignment hint
| EBP | 271 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 7.4 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 |
|---|---|---|---|---|---|---|---|---|
| 18 Sound 12MB600 | 44 -2 | 0.18 +0.02 | 115 -15 | 4.5 +0.6 | 101 -1.3 | close | + | |
| Audax PR33S100 vp1 | 36.8 -9.2 | 0.164 = | 124.3 -5.7 | 3.8 -0.1 | 98.9 -3.4 | usable | Xmax 3.8 mm < 3.9 mm: lower excursion-limited SPL | + |
| B&C 12 CXN 76 | 42 -4 | 0.195 +0.03 | 120 -10 | 4 +0.1 | 100.5 -1.8 | usable | + | |
| B&C 12 HCX 76 | 42 -4 | 0.195 +0.03 | 118.9 -11.1 | 4 +0.1 | 100.5 -1.8 | usable | + | |
| Beyma 12M300 | 45 -1 | 0.199 +0.04 | 115 -15 | 3.8 -0.1 | 100.1 -2.2 | usable | Xmax 3.8 mm < 3.9 mm: lower excursion-limited SPL | + |
| Beyma 12P80Nd | 45 -1 | 0.147 -0.02 | 95.7 -34.3 | 5.5 +1.6 | 101.5 -0.8 | usable | + | |
| 18 Sound 12MB700 | 49 +3 | 0.19 +0.03 | 101 -29 | 4.5 +0.6 | 101.5 -0.8 | usable | + | |
| 18 Sound 12MB777 | 49 +3 | 0.19 +0.03 | 101 -29 | 4.5 +0.6 | 101.5 -0.8 | usable | + | |
| 18 Sound 12ND610 | 46 = | 0.14 -0.02 | 94.4 -35.6 | 3.5 -0.4 | 102 -0.3 | usable | Xmax 3.5 mm < 3.9 mm: lower excursion-limited SPL | + |
| B&C 12CXN76 | 42 -4 | 0.19 +0.03 | 120 -10 | 6 +2.1 | 98.3 -4 | usable | + |
Compare the closest 3 against the SP-30PAX →
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.