RCF CX15G251
Thiele-Small parameters
| Nominal size | 15" |
|---|---|
| Impedance | 8 Ω |
| Fs | 41 Hz |
| Qts | 0.389 |
| Qes | 0.41 |
| Qms | 7.6 |
| Vas | 219 L |
| Sd | 860 cm² |
| Xmax | 3.7 mm |
| Re | 5.2 Ω |
| Bl | 15.3 T·m |
| Mms | 71.3 g |
| Pe | 100 W |
| Sensitivity | 99.5 dB |
Alignment hint
| EBP | 100 · flexible |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 95 L |
EBP 50-100: works in either a sealed or ported 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 |
|---|---|---|---|---|---|---|---|---|
| Eminence DELTALITE 2515/16 | 42 +1 | 0.376 -0.01 | 204 -15 | 4.8 +1.1 | 99.5 = | close | + | |
| Eminence DELTALITE-II 2515 | 42 +1 | 0.376 -0.01 | 204 -15 | 4.8 +1.1 | 99.4 -0.1 | close | + | |
| Eminence DELTA PRO 15 | 42 +1 | 0.403 +0.01 | 243.5 +24.5 | 4.3 +0.6 | 99.6 +0.1 | close | + | |
| Eminence DELTA PRO 15 A | 42 +1 | 0.403 +0.01 | 243.5 +24.5 | 4.3 +0.6 | 99.6 +0.1 | close | + | |
| P.Audio C15-300MB | 42 +1 | 0.375 -0.01 | 199.5 -19.5 | 3.5 -0.2 | 99.4 -0.1 | close | Xmax 3.5 mm < 3.7 mm: lower excursion-limited SPL | + |
| JBL M115-8A | 46 +5 | 0.388 = | 225 +6 | 5.1 +1.4 | 100.8 +1.3 | close | + | |
| Monacor SP-15/200PA | 42 +1 | 0.375 -0.01 | 197 -22 | 4.7 +1 | 98.2 -1.3 | close | + | |
| Eminence DELTA PRO 15A | 42 +1 | 0.4 +0.01 | 243.5 +24.5 | 4.3 +0.6 | 101.6 +2.1 | close | + | |
| SICA 15 BP 3 SL | 41.9 +0.9 | 0.419 +0.03 | 191.6 -27.4 | 4 +0.3 | 98.7 -0.8 | close | + | |
| SICA P-A-SL15B3P | 41.9 +0.9 | 0.419 +0.03 | 191.6 -27.4 | 4 +0.3 | 98.7 -0.8 | close | + |
Compare the closest 3 against the CX15G251 →
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.