18 Sound 15MB650
Thiele-Small parameters
| Nominal size | 15" |
|---|---|
| Impedance | 8 Ω |
| Fs | 40 Hz |
| Qts | 0.26 |
| Qes | 0.27 |
| Qms | 3.95 |
| Vas | 210 L |
| Sd | 900 cm² |
| Xmax | 4 mm |
| Re | 5.5 Ω |
| Bl | 20 T·m |
| Mms | 77 g |
| Pe | 400 W |
| Sensitivity | 101.5 dB |
Alignment hint
| EBP | 148 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 32.8 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 |
|---|---|---|---|---|---|---|---|---|
| Electro-Voice DL15X v1 | 40 = | 0.262 = | 229 +19 | 4.1 +0.1 | 100.6 -0.9 | close | + | |
| B&C 15 PLB 76 (prodance) | 38.7 -1.3 | 0.259 = | 215 +5 | 5 +1 | 100.6 -0.9 | close | + | |
| Audax PR38LEX100VST | 38.7 -1.3 | 0.258 = | 221.1 +11.1 | 4 = | 100.1 -1.4 | close | 250 W vs 400 W: lower power handling | + |
| Radian 5215B v2017 | 40 = | 0.266 +0.01 | 202 -8 | 5.5 +1.5 | 100.3 -1.2 | close | + | |
| Radian 5215B v2024 | 40 = | 0.266 +0.01 | 202 -8 | 5.5 +1.5 | 100.3 -1.2 | close | + | |
| DAS Audio 15B | 42 +2 | 0.241 -0.02 | 198 -12 | 4 = | 101.2 -0.3 | close | + | |
| PD PD 153 C01 | 39 -1 | 0.265 +0.01 | 195 -15 | 5.5 +1.5 | 100.2 -1.3 | close | + | |
| Precision Devices PD 153 C01 | 39 -1 | 0.265 +0.01 | 195 -15 | 5.5 +1.5 | 100.2 -1.3 | close | + | |
| B&C 15 PL 40 | 39 -1 | 0.224 -0.04 | 211 +1 | 4 = | 101.3 -0.2 | close | + | |
| B&C 15 TX | 40 = | 0.245 -0.02 | 215.6 +5.6 | 9 +5 | 101.1 -0.4 | close | + |
Compare the closest 3 against the 15MB650 →
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.