Monacor SP-38A/300PRO
Thiele-Small parameters
| Nominal size | 15" |
|---|---|
| Impedance | 8 Ω |
| Fs | 50 Hz |
| Qts | 0.389 |
| Qes | 0.44 |
| Qms | 3.37 |
| Vas | 135 L |
| Sd | 850 cm² |
| Xmax | 2.5 mm |
| Re | 6 Ω |
| Bl | 18 T·m |
| Mms | 76 g |
| Pe | 300 W |
| Sensitivity | 99.1 dB |
Alignment hint
| EBP | 114 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 58.6 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 2226HPL vp prodance | 49 -1 | 0.396 +0.01 | 140.1 +5.1 | 5.8 +3.3 | 99.2 +0.1 | close | + | |
| Focal 15PR75-250 | 50.8 +0.8 | 0.369 -0.02 | 128.8 -6.2 | 4 +1.5 | 99.7 +0.6 | close | + | |
| JB Systems WHAREFEDALE B-15-250 | 49.1 -0.9 | 0.409 +0.02 | 125 -10 | 4 +1.5 | 98.7 -0.4 | close | + | |
| LaVoce WXF15.350-8 | 50 = | 0.38 -0.01 | 118 -17 | 4.6 +2.1 | 99.3 +0.2 | close | + | |
| LaVoce WXF15.400 | 50 = | 0.38 -0.01 | 118 -17 | 4.9 +2.4 | 99.3 +0.2 | close | + | |
| P.Audio 15BM-300B | 50.6 +0.6 | 0.404 +0.02 | 113 -22 | 3.5 +1 | 99.1 = | close | + | |
| Celestion TN1530 | 47.6 -2.4 | 0.39 = | 117 -18 | 3.8 +1.3 | 98.4 -0.7 | close | + | |
| RCF MB 15N301 | 48 -2 | 0.36 -0.03 | 134 -1 | 5.6 +3.1 | 99.2 +0.1 | close | + | |
| Eminence 15-3008PS LF | 46.6 -3.4 | 0.396 +0.01 | 130 -5 | 5.5 +3 | 98.4 -0.7 | close | + | |
| PD PD 156 | 50.2 +0.2 | 0.378 -0.01 | 120.2 -14.8 | 6.6 +4.1 | 99.2 +0.1 | close | + |
Compare the closest 3 against the SP-38A/300PRO →
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.