Altec 950-8A
Thiele-Small parameters
| Nominal size | 15" |
|---|---|
| Impedance | 8 Ω |
| Fs | 31.5 Hz |
| Qts | 0.3 |
| Qes | 0.31 |
| Qms | 9.07 |
| Vas | 410.6 L |
| Sd | 858.6 cm² |
| Xmax | 2 mm |
| Re | 7 Ω |
| Bl | 16.9 T·m |
| Mms | 64.2 g |
| Pe | 15 W |
| Sensitivity | 98.7 dB |
Alignment hint
| EBP | 102 · ported |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | ≈ 90.1 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 |
|---|---|---|---|---|---|---|---|---|
| Peavey 1504-4DT | 31.3 -0.2 | 0.304 = | 385 -25.6 | 3 +1 | 101.2 +2.5 | close | 4 Ω vs 8 Ω: amp load changes | + |
| LII Audio FAST-15 | 36.5 +5 | 0.311 +0.01 | 366.4 -44.2 | 2 = | 99.3 +0.6 | close | 16 Ω vs 8 Ω: amp load changes | + |
| Eminence GAMMA 15 | 33 +1.5 | 0.301 = | 314.1 -96.5 | 3 +1 | 98.7 = | close | + | |
| Eminence GAMMA 15 A2 | 33 +1.5 | 0.301 = | 314.1 -96.5 | 3 +1 | 98.7 = | close | + | |
| Great Plains Audio 515-8C GPA | 27.8 -3.7 | 0.299 = | 422.5 +11.9 | 4.7 +2.7 | 97.6 -1.1 | close | + | |
| ATC SB100-375SC | 30 -1.5 | 0.322 +0.02 | 380 -30.6 | 4.2 +2.2 | 98 -0.7 | close | + | |
| Altec 515-8C vp jpvoit | 34.2 +2.7 | 0.337 +0.04 | 414.9 +4.3 | 4.1 +2.1 | 98.6 -0.1 | close | + | |
| Davis 40RCA15 vp2 | 26.6 -4.9 | 0.309 +0.01 | 410 -0.6 | 5 +3 | 98.6 -0.1 | close | + | |
| Monacor SP-385PAX | 30 -1.5 | 0.285 -0.02 | 365 -45.6 | 4.5 +2.5 | 98 -0.7 | close | + | |
| Beyma SM115/N | 29 -2.5 | 0.291 -0.01 | 430 +19.4 | 7.3 +5.3 | 98.3 -0.4 | close | + |
Compare the closest 3 against the 950-8A →
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.