Monacor SP-25A/250PA
Thiele-Small parameters
| Nominal size | 10" |
|---|---|
| Impedance | 8 Ω |
| Fs | 52 Hz |
| Qts | 0.24 |
| Qes | 0.25 |
| Qms | 6.3 |
| Vas | 29 L |
| Sd | 350 cm² |
| Xmax | 2.5 mm |
| Re | 5.4 Ω |
| Bl | 19.8 T·m |
| Mms | 55.5 g |
| Pe | 250 W |
| Sensitivity | 95.8 dB |
Alignment hint
| EBP | 208 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 3.8 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 |
|---|---|---|---|---|---|---|---|---|
| B&C 10 NW 64 | 50 -2 | 0.255 +0.02 | 27.5 -1.5 | 4.3 +1.8 | 94.9 -0.9 | close | + | |
| PHL Audio 3490 | 54 +2 | 0.258 +0.02 | 28 -1 | 4.2 +1.7 | 96.9 +1.1 | close | + | |
| Beyma 10MC500Nd | 58 +6 | 0.24 = | 29 = | 8 +5.5 | 97 +1.2 | close | + | |
| B&C 10 NDL 64 | 56 +4 | 0.267 +0.03 | 31 +2 | 4 +1.5 | 96.2 +0.4 | close | + | |
| ATC PA75-234 BLC | 49 -3 | 0.267 +0.03 | 33 +4 | 2.4 -0.1 | 94.5 -1.3 | close | 75 W vs 250 W: lower power handling · Xmax 2.4 mm < 2.5 mm: lower excursion-limited SPL | + |
| B&C 10NDL64 | 56 +4 | 0.26 +0.02 | 31 +2 | 6 +3.5 | 97 +1.2 | close | + | |
| RCF L10/750YK | 68 +16 | 0.24 = | 26 -3 | 2.5 = | 97 +1.2 | close | 6 Ω vs 8 Ω: amp load changes · 175 W vs 250 W: lower power handling | + |
| PHL Audio 3420 | 53 +1 | 0.256 +0.02 | 35 +6 | 4.3 +1.8 | 97.6 +1.8 | close | + | |
| SICA 10 K 3 PL 4 Ohms | 56 +4 | 0.265 +0.03 | 29.2 +0.2 | 4 +1.5 | 98.9 +3.1 | close | 4 Ω vs 8 Ω: amp load changes | + |
| PHL Audio 3411 | 47 -5 | 0.23 -0.01 | 35.1 +6.1 | 4.9 +2.4 | 95.3 -0.5 | usable | + |
Compare the closest 3 against the SP-25A/250PA →
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.