Dayton Audio SD270-88 v2009
Thiele-Small parameters
| Nominal size | 10" |
|---|---|
| Impedance | 4 Ω |
| Fs | 25 Hz |
| Qts | 0.379 |
| Qes | 0.43 |
| Qms | 3.2 |
| Vas | 110.4 L |
| Sd | 359.7 cm² |
| Xmax | 6 mm |
| Re | 3.1 Ω |
| Bl | 8.7 T·m |
| Mms | 66.6 g |
| Pe | 80 W |
| Sensitivity | 92.1 dB |
Alignment hint
| EBP | 58 · flexible |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 44.5 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 |
|---|---|---|---|---|---|---|---|---|
| Dayton Audio 10 DVC | 25 = | 0.379 = | 110.4 = | 17.8 +11.8 | 92.1 = | close | + | |
| Dayton Audio SD270A-88 DVC | 26.2 +1.2 | 0.433 +0.05 | 107.5 -2.9 | 6 = | 91.9 -0.2 | close | + | |
| Focal 10N511 | 29.6 +4.6 | 0.371 -0.01 | 121 +10.6 | 6 = | 92.2 +0.1 | close | 8 Ω vs 4 Ω: amp load changes · 60 W vs 80 W: lower power handling | + |
| Falcon Acoustics B139 SP1044 REMPLACEMENT | 25 = | 0.366 -0.01 | 127 +16.6 | 6 = | 89.5 -2.6 | close | 8 Ω vs 4 Ω: amp load changes | + |
| Sony XS-L100C | 28.1 +3.1 | 0.362 -0.02 | 104 -6.4 | 6.3 +0.3 | 93.4 +1.3 | close | + | |
| Focal 11C 726 | 30.9 +5.9 | 0.378 = | 120 +9.6 | 6.9 +0.9 | 92.4 +0.3 | close | 8 Ω vs 4 Ω: amp load changes | + |
| Dayton Audio RS270-8 | 24.9 -0.1 | 0.401 +0.02 | 120.5 +10.1 | 6 = | 88.2 -3.9 | close | 8 Ω vs 4 Ω: amp load changes | + |
| Volt B250 | 31.7 +6.7 | 0.377 = | 104 -6.4 | 6 = | 92.8 +0.7 | close | 8 Ω vs 4 Ω: amp load changes | + |
| Scan-Speak 26W/8534G00 | 25 = | 0.368 -0.01 | 153 +42.6 | 6 = | 91.5 -0.6 | close | 8 Ω vs 4 Ω: amp load changes | + |
| Peerless SLS-250S38CP00-04 | 26.9 +1.9 | 0.369 -0.01 | 108.5 -1.9 | 4.6 -1.4 | 93.1 +1 | close | Xmax 4.6 mm < 6 mm: lower excursion-limited SPL | + |
Compare the closest 3 against the SD270-88 v2009 →
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.