Radian 5215B oem3
Thiele-Small parameters
| Nominal size | 15" |
|---|---|
| Impedance | 8 Ω |
| Fs | 42 Hz |
| Qts | 0.247 |
| Qes | 0.27 |
| Qms | 2.85 |
| Vas | 197 L |
| Sd | 880 cm² |
| Xmax | 5.5 mm |
| Re | 6 Ω |
| Bl | 21.5 T·m |
| Mms | 79.1 g |
| Pe | 625 W |
| Sensitivity | 100.6 dB |
Alignment hint
| EBP | 156 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 27.4 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 |
|---|---|---|---|---|---|---|---|---|
| Radian 5215B oem2 | 42 = | 0.247 = | 197 = | 5.5 = | 100.6 = | close | + | |
| Radian 5215B v2017 | 40 -2 | 0.266 +0.02 | 202 +5 | 5.5 = | 100.3 -0.3 | close | + | |
| Radian 5215B v2024 | 40 -2 | 0.266 +0.02 | 202 +5 | 5.5 = | 100.3 -0.3 | close | + | |
| RCF MB 15N351 | 42 = | 0.226 -0.02 | 191 -6 | 6 +0.5 | 101.2 +0.6 | close | + | |
| RCF CX 15N351 | 42 = | 0.226 -0.02 | 191 -6 | 5.3 -0.2 | 101.2 +0.6 | close | 450 W vs 625 W: lower power handling · Xmax 5.3 mm < 5.5 mm: lower excursion-limited SPL | + |
| PD PD 153 C01 | 39 -3 | 0.265 +0.02 | 195 -2 | 5.5 = | 100.2 -0.4 | close | 400 W vs 625 W: lower power handling | + |
| Precision Devices PD 153 C01 | 39 -3 | 0.265 +0.02 | 195 -2 | 5.5 = | 100.2 -0.4 | close | 400 W vs 625 W: lower power handling | + |
| B&C 15 CXN 88 | 40 -2 | 0.254 +0.01 | 178 -19 | 6 +0.5 | 100.4 -0.2 | close | + | |
| PHL Audio 5140 | 38 -4 | 0.245 = | 180 -17 | 5.7 +0.2 | 100.6 = | close | + | |
| PHL Audio 5030 | 40 -2 | 0.236 -0.01 | 180 -17 | 5.4 -0.1 | 100.2 -0.4 | close | Xmax 5.4 mm < 5.5 mm: lower excursion-limited SPL | + |
Compare the closest 3 against the 5215B oem3 →
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.