Monacor SP-38/300PA
Thiele-Small parameters
| Nominal size | 15" |
|---|---|
| Impedance | 8 Ω |
| Fs | 48 Hz |
| Qts | 0.23 |
| Qes | 0.24 |
| Qms | 5.68 |
| Vas | 213 L |
| Sd | 855 cm² |
| Xmax | 4 mm |
| Re | 5.9 Ω |
| Bl | 19.8 T·m |
| Mms | 52.9 g |
| Pe | 300 W |
| Sensitivity | 103.2 dB |
Alignment hint
| EBP | 200 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 25.2 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 |
|---|---|---|---|---|---|---|---|---|
| JBL M151-8 | 45 -3 | 0.256 +0.03 | 198.2 -14.8 | 4.4 +0.4 | 102.5 -0.7 | close | + | |
| B&C 15 PL 40 | 39 -9 | 0.224 -0.01 | 211 -2 | 4 = | 101.3 -1.9 | close | + | |
| DAS Audio 15B | 42 -6 | 0.241 +0.01 | 198 -15 | 4 = | 101.2 -2 | close | + | |
| DAS Audio 15BN | 44 -4 | 0.213 -0.02 | 181 -32 | 4 = | 101.9 -1.3 | close | + | |
| RCF CX 15N351 | 42 -6 | 0.226 = | 191 -22 | 5.3 +1.3 | 101.2 -2 | close | + | |
| Radian 5215B OEM | 42 -6 | 0.204 -0.03 | 205 -8 | 5.5 +1.5 | 102.4 -0.8 | close | + | |
| RCF MB 15N351 | 42 -6 | 0.226 = | 191 -22 | 6 +2 | 101.2 -2 | close | + | |
| MC Kenzie C15.400BS | 40 -8 | 0.219 -0.01 | 215 +2 | 5.4 +1.4 | 101 -2.2 | close | + | |
| Altec ER-15L | 43 -5 | 0.238 +0.01 | 246.4 +33.4 | 3.3 -0.7 | 102.8 -0.4 | close | 200 W vs 300 W: lower power handling · Xmax 3.3 mm < 4 mm: lower excursion-limited SPL | + |
| RCF L 15P801 | 45 -3 | 0.237 +0.01 | 163 -50 | 4.6 +0.6 | 101.7 -1.5 | close | + |
Compare the closest 3 against the SP-38/300PA →
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.