ATC PA75-375 STD
Thiele-Small parameters
| Nominal size | 15" |
|---|---|
| Impedance | 8 Ω |
| Fs | 60 Hz |
| Qts | 0.398 |
| Qes | 0.452 |
| Qms | 3.3 |
| Vas | 82 L |
| Sd | 820 cm² |
| Xmax | 1.6 mm |
| Re | 5.4 Ω |
| Bl | 19.1 T·m |
| Mms | 80.9 g |
| Pe | 75 W |
| Sensitivity | 99.6 dB |
Alignment hint
| EBP | 133 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 38 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 |
|---|---|---|---|---|---|---|---|---|
| P.Audio R15/76MB | 62.5 +2.5 | 0.421 +0.02 | 83.4 +1.4 | 4.2 +2.6 | 100 +0.4 | close | + | |
| RCF L 17/64AF vp FREDO51 | 60 = | 0.388 -0.01 | 109 +27 | 2.8 +1.2 | 101.2 +1.6 | usable | + | |
| ATC PA75-375 BLC | 53 -7 | 0.332 -0.07 | 87 +5 | 1.5 -0.1 | 98.7 -0.9 | usable | Xmax 1.5 mm < 1.6 mm: lower excursion-limited SPL | + |
| P.Audio 15BM-300B | 50.6 -9.4 | 0.404 +0.01 | 113 +31 | 3.5 +1.9 | 99.1 -0.5 | usable | + | |
| RCF L 15P540 | 50 -10 | 0.393 -0.01 | 100 +18 | 5.2 +3.6 | 98.4 -1.2 | usable | + | |
| PRV Audio 15W1600 | 50.5 -9.5 | 0.358 -0.04 | 87.9 +5.9 | 5.6 +4 | 98.5 -1.1 | usable | + | |
| Audax PR380T2 | 52 -8 | 0.522 +0.12 | 92 +10 | 2.7 +1.1 | 99.4 -0.2 | usable | 4 Ω vs 8 Ω: amp load changes | + |
| Audax PR38EX100VST vp 2mm | 47.7 -12.3 | 0.372 -0.03 | 117.9 +35.9 | 2 +0.4 | 98.6 -1 | usable | + | |
| P.Audio SD-15 | 44.9 -15.1 | 0.393 -0.01 | 89.4 +7.4 | 5 +3.4 | 96.6 -3 | usable | + | |
| Audax PR38EX100VST vp_n | 49.1 -10.9 | 0.378 -0.02 | 111 +29 | 3.7 +2.1 | 98.4 -1.2 | usable | + |
Compare the closest 3 against the PA75-375 STD →
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.