Beyma 21QLEX1600Fe
Thiele-Small parameters
| Nominal size | 21" |
|---|---|
| Impedance | 8 Ω |
| Fs | 30 Hz |
| Qts | 0.28 |
| Qes | 0.3 |
| Qms | 4.5 |
| Vas | 309 L |
| Sd | 1734 cm² |
| Xmax | 13 mm |
| Re | 5.4 Ω |
| Bl | 36.4 T·m |
| Mms | 388 g |
| Pe | 1600 W |
| Sensitivity | 98 dB |
Alignment hint
| EBP | 100 · flexible |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 57.5 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 |
|---|---|---|---|---|---|---|---|---|
| Beyma 21"LEX1600/Nd | 30 = | 0.29 +0.01 | 305 -4 | 14 +1 | 98 = | close | + | |
| Faital PRO 21XL3000 | 30 = | 0.25 -0.03 | 284.6 -24.4 | 17.67 +4.67 | 98 = | close | + | |
| RCF LF21N451 | 30 = | 0.26 -0.02 | 375 +66 | 13 = | 98.5 +0.5 | close | + | |
| 18 Sound 21NTLW5000 | 30 = | 0.32 +0.04 | 300 -9 | 17.5 +4.5 | 97 -1 | close | 4 Ω vs 8 Ω: amp load changes | + |
| 18 Sound 21NLW5300 | 31 +1 | 0.32 +0.04 | 325 +16 | 15.3 +2.3 | 98.5 +0.5 | close | + | |
| 18 Sound 21NLW9001 | 32 +2 | 0.31 +0.03 | 244 -65 | 14 +1 | 98 = | close | + | |
| Celestion NTR21-5010JD | 30.2 +0.2 | 0.291 +0.01 | 341.215 +32.21 | 9 -4 | 96.7 -1.3 | close | Xmax 9 mm < 13 mm: lower excursion-limited SPL | + |
| B&C 21SW115 | 30 = | 0.37 +0.09 | 318 +9 | 14 +1 | 97 -1 | close | + | |
| 18 Sound 21LW2600 | 27 -3 | 0.33 +0.05 | 333 +24 | 14.6 +1.6 | 97 -1 | usable | + | |
| 18 Sound 21NLW9001 | 31 +1 | 0.34 +0.06 | 272 -37 | 14 +1 | 95 -3 | usable | 4 Ω vs 8 Ω: amp load changes | + |
Compare the closest 3 against the 21QLEX1600Fe →
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.