ATC SB75-314 SC
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 23 Hz |
| Qts | 0.25 |
| Qes | 0.3 |
| Qms | 1.5 |
| Vas | 245 L |
| Sd | 550 cm² |
| Xmax | 5 mm |
| Re | 5.4 Ω |
| Bl | 14.7 T·m |
| Mms | 82.9 g |
| Pe | 75 W |
| Sensitivity | 93.7 dB |
Alignment hint
| EBP | 77 · flexible |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 35 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 |
|---|---|---|---|---|---|---|---|---|
| JBL 2214H | 23 = | 0.244 -0.01 | 223.7 -21.3 | 6.6 +1.6 | 93.9 +0.2 | close | + | |
| Fostex FW 305 | 25 +2 | 0.254 = | 254 +9 | 4.8 -0.2 | 94.3 +0.6 | close | Xmax 4.8 mm < 5 mm: lower excursion-limited SPL | + |
| Eminence W1238R | 21.5 -1.5 | 0.252 = | 236.6 -8.4 | 8.2 +3.2 | 93.6 -0.1 | close | + | |
| Tonsil GDN 30/80/2 | 25 +2 | 0.26 +0.01 | 270 +25 | 6 +1 | 93.5 -0.2 | close | + | |
| Monacor SPP-300/AD | 23 = | 0.265 +0.02 | 305 +60 | 5 = | 93.9 +0.2 | close | + | |
| JBL 128-H vp ca2 | 21.6 -1.4 | 0.24 -0.01 | 214.6 -30.4 | 7.7 +2.7 | 93.1 -0.6 | close | + | |
| JBL 252G | 23 = | 0.25 = | 178 -67 | 7 +2 | 93.8 +0.1 | close | + | |
| Scan-Speak 32W/8878T11 | 21 -2 | 0.261 +0.01 | 235 -10 | 7.5 +2.5 | 92.1 -1.6 | close | + | |
| JBL 128-H vp ca1 | 21.2 -1.8 | 0.233 -0.02 | 222.7 -22.3 | 7.8 +2.8 | 93.1 -0.6 | close | + | |
| Fostex W 300 A | 25 +2 | 0.281 +0.03 | 227 -18 | 4.6 -0.4 | 93.4 -0.3 | close | 50 W vs 75 W: lower power handling · Xmax 4.6 mm < 5 mm: lower excursion-limited SPL | + |
Compare the closest 3 against the SB75-314 SC →
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.