JB Systems SP12/200 vp
Thiele-Small parameters
| Nominal size | 12" |
|---|---|
| Impedance | 8 Ω |
| Fs | 42.9 Hz |
| Qts | 1.385 |
| Qes | 1.694 |
| Qms | 7.585 |
| Vas | 107.3 L |
| Sd | 540 cm² |
| Xmax | 3 mm |
| Re | 7.12 Ω |
| Bl | 7.7 T·m |
| Mms | 52.4 g |
| Pe | 200 W |
| Sensitivity | 89.5 dB |
Alignment hint
| EBP | 25 · sealed |
|---|---|
| Sealed Vb (Qtc ≈ 0.71) | Qts too high |
EBP < 50: favours a sealed (closed) 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 |
|---|---|---|---|---|---|---|---|---|
| Sphynx SP-31-S | 41 -1.9 | 1.255 -0.13 | 101 -6.3 | 3.8 +0.8 | 88.8 -0.7 | close | 150 W vs 200 W: lower power handling | + |
| Goldwood GW-212/8 | 38.8 -4.1 | 1.439 +0.05 | 101.7 -5.6 | 2.5 -0.5 | 87.3 -2.2 | close | 120 W vs 200 W: lower power handling · Xmax 2.5 mm < 3 mm: lower excursion-limited SPL | + |
| Goldwood 212/8 | 38 -4.9 | 1.44 +0.05 | 101.6 -5.7 | 2.5 -0.5 | 86.3 -3.2 | usable | 120 W vs 200 W: lower power handling · Xmax 2.5 mm < 3 mm: lower excursion-limited SPL | + |
| Jinwey YDA-300-4 | 49.4 +6.5 | 1.601 +0.22 | 93.2 -14.1 | 2.2 -0.8 | 90 +0.5 | usable | 100 W vs 200 W: lower power handling · Xmax 2.2 mm < 3 mm: lower excursion-limited SPL | + |
| Jinwey YDA-300-8 | 49.4 +6.5 | 1.601 +0.22 | 93.2 -14.1 | 2.2 -0.8 | 90 +0.5 | usable | 100 W vs 200 W: lower power handling · Xmax 2.2 mm < 3 mm: lower excursion-limited SPL | + |
| Lautsprecher Technik MHB-12 | 38.2 -4.7 | 1.107 -0.28 | 132.7 +25.4 | 5 +2 | 88.9 -0.6 | usable | + | |
| Elokance 12WF500 | 50 +7.1 | 1.102 -0.28 | 99.1 -8.2 | 3.6 +0.6 | 93.2 +3.7 | usable | 120 W vs 200 W: lower power handling | + |
| GRS 12PF-8 | 35 -7.9 | 1.543 +0.16 | 149.5 +42.2 | 3.5 +0.5 | 87.1 -2.4 | usable | 100 W vs 200 W: lower power handling | + |
| Pioneer PAX30G vp2 | 42.1 -0.8 | 0.879 -0.51 | 92.7 -14.6 | 3 = | 88.2 -1.3 | usable | 16 Ω vs 8 Ω: amp load changes · 60 W vs 200 W: lower power handling | + |
| Goldwood GW‐212/4 | 35.8 -7.1 | 1.204 -0.18 | 166.6 +59.3 | 3.5 +0.5 | 88.9 -0.6 | usable | 4 Ω vs 8 Ω: amp load changes · 120 W vs 200 W: lower power handling | + |
Compare the closest 3 against the SP12/200 vp →
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.