PHL Audio 4550
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 45 Hz |
| Qts | 0.289 |
| Qes | 0.32 |
| Qms | 3 |
| Vas | 106 L |
| Sd | 540 cm² |
| Xmax | 4 mm |
| Re | 5.7 Ω |
| Bl | 15.6 T·m |
| Mms | 48.2 g |
| Pe | 250 W |
| Sensitivity | 98.3 dB |
Alignment hint
| EBP | 141 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 21.3 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 |
|---|---|---|---|---|---|---|---|---|
| Beyma SM112 | 45 = | 0.262 -0.03 | 101 -5 | 4.8 +0.8 | 98.3 = | close | + | |
| Beyma 12CXA400Nd | 45 = | 0.268 -0.02 | 102.2 -3.8 | 6 +2 | 98 -0.3 | close | + | |
| MC Kenzie C12.200L | 45 = | 0.296 +0.01 | 90 -16 | 4.2 +0.2 | 97.4 -0.9 | close | + | |
| Eminence KL3012CX-8 | 42 -3 | 0.299 +0.01 | 111.5 +5.5 | 3.7 -0.3 | 97.7 -0.6 | close | Xmax 3.7 mm < 4 mm: lower excursion-limited SPL | + |
| PHL Audio 4500 | 42 -3 | 0.274 -0.01 | 108 +2 | 5.7 +1.7 | 99 +0.7 | close | + | |
| SB Audience 12MW300 | 43 -2 | 0.264 -0.02 | 104 -2 | 5.6 +1.6 | 98.7 +0.4 | close | + | |
| Eighteen Sound 12ND520 | 50 +5 | 0.27 -0.02 | 111 +5 | 4 = | 98.7 +0.4 | close | + | |
| Selenium 12PW5 | 43 -2 | 0.314 +0.03 | 108 +2 | 3.7 -0.3 | 97.5 -0.8 | close | Xmax 3.7 mm < 4 mm: lower excursion-limited SPL | + |
| Monacor SP-12/200PA | 45 = | 0.328 +0.04 | 114 +8 | 4 = | 97.4 -0.9 | close | + | |
| Fane SOVEREIGN PRO 12-350N | 46 +1 | 0.328 +0.04 | 114 +8 | 4.5 +0.5 | 98.4 +0.1 | close | + |
Compare the closest 3 against the 4550 →
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.