Fostex L 569
Thiele-Small parameters
| Nominal size | 18" |
|---|---|
| Impedance | 8 Ω |
| Fs | 30 Hz |
| Qts | 0.28 |
| Qes | 0.3 |
| Qms | 4.2 |
| Vas | 560 L |
| Sd | 1280 cm² |
| Xmax | 4 mm |
| Re | 6.8 Ω |
| Bl | 22.2 T·m |
| Mms | 115.4 g |
| Pe | 150 W |
| Sensitivity | 99.7 dB |
Alignment hint
| EBP | 100 · flexible |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 104.1 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 |
|---|---|---|---|---|---|---|---|---|
| Electro-Voice DL18X | 30 = | 0.339 +0.06 | 566.3 +6.3 | 4.1 +0.1 | 99.4 -0.3 | close | + | |
| 18 Sound 18LW800 | 29 -1 | 0.272 -0.01 | 448 -112 | 8 +4 | 99.8 +0.1 | close | + | |
| Beyma 18P80/ND | 30 = | 0.283 = | 411 -149 | 7.5 +3.5 | 99.8 +0.1 | close | + | |
| Eminence DELTA PRO 18 (Prodance) | 26.6 -3.4 | 0.301 +0.02 | 533.6 -26.4 | 6.7 +2.7 | 98.8 -0.9 | close | + | |
| Eminence JAY7010 | 28.1 -1.9 | 0.314 +0.03 | 546.6 -13.4 | 9.1 +5.1 | 99.2 -0.5 | close | + | |
| Electro-Voice EVX-180A | 29 -1 | 0.27 -0.01 | 416 -144 | 6.4 +2.4 | 99.5 -0.2 | close | + | |
| Electro-Voice EVX-180B | 29 -1 | 0.27 -0.01 | 416 -144 | 6.4 +2.4 | 99.5 -0.2 | close | + | |
| Eminence KAPPA 18 | 28 -2 | 0.32 +0.04 | 493.2 -66.8 | 4.8 +0.8 | 98.9 -0.8 | close | + | |
| Eminence SIGMA PRO-18A | 28 -2 | 0.29 +0.01 | 441.2 -118.8 | 6.1 +2.1 | 99 -0.7 | close | + | |
| Eminence SIGMA PRO 18 (prodance) | 26 -4 | 0.301 +0.02 | 523 -37 | 6.1 +2.1 | 98.4 -1.3 | close | + |
Compare the closest 3 against the L 569 →
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.