URAL subwoofers
Thiele/Small parameters of URAL subwoofers (8″, 10″, 12″, 15″, 18″) and a recommended sealed and ported box for every model, in a free sub box calculator.
39 models
| Model | Size | Voice coils | Fs, Hz | Qts | Vas, ft³ | Xmax, in | RMS, W |
|---|---|---|---|---|---|---|---|
| Patriot 8 (2+2) | 8″ | dual 2 Ω | 41.9 | 0.41 | 0.18 | 0.79 | 750 |
| AK-10 | 10″ | 4 Ω | 37.5 | 0.39 | 1.20 | 0.39 | — |
| AS-D10.3D2 (2+2) | 10″ | dual 2 Ω | 32.6 | 0.47 | 1.62 | 0.37 | 350 |
| AS-D10.3D4 (4+4) ! | 10″ | dual 4 Ω | 32.6 | 0.47 | 1.63 | 0.37 | 350 |
| AS-D10.3TD2 (2+2) | 10″ | dual 2 Ω | 30.5 | 0.52 | 1.14 | — | 500 |
| AS-D10.3TD4 (4+4) | 10″ | dual 4 Ω | 30.5 | 0.52 | 1.14 | — | 500 |
| Bulava 10 (2+2) | 10″ | dual 2 Ω | 33.2 | 0.33 | 0.68 | 0.94 | 800 |
| Molot 10 (2+2) | 10″ | dual 2 Ω | 35.6 | 0.55 | 0.81 | 0.28 | 300 |
| Patriot 10 (4+4) | 10″ | dual 2 Ω | 33.5 | 0.44 | 0.60 | 0.91 | 1,200 |
| Symphony 10 (2+2) | 10″ | dual 2 Ω | 36.8 | 0.46 | 0.50 | 0.91 | 600 |
| AK-12 | 12″ | 4 Ω | 33 | 0.45 | 1.99 | 0.39 | — |
| AS-C12.2 (4+4) | 12″ | dual 4 Ω | 33.1 | 0.65 | 1.84 | 1.26 | 400 |
| AS-D12.3D2 (2+2) | 12″ | dual 2 Ω | 29.5 | 0.50 | 2.10 | 0.46 | 400 |
| AS-D12.3D2 Armada (2+2) | 12″ | dual 2 Ω | 26.7 | 0.55 | 1.67 | — | 900 |
| AS-D12.3D4 (4+4) | 12″ | dual 4 Ω | 29.5 | 0.50 | 2.10 | 0.46 | 400 |
| AS-D12.3TD2 (2+2) | 12″ | dual 2 Ω | 28 | 0.52 | 1.67 | — | 600 |
| AS-D12.3TD4 (4+4) | 12″ | dual 4 Ω | 28 | 0.52 | 1.67 | — | 600 |
| AS-W12SW Grand2 (2+2) | 12″ | dual 2 Ω | 30.7 | 0.48 | 2.05 | 0.79 | 700 |
| Bulava 12 (2+2) | 12″ | dual 2 Ω | 26.9 | 0.43 | 1.59 | 1.10 | 900 |
| Decibel 12 (1+1) | 12″ | dual 1 Ω | 24.1 | 0.42 | 1.34 | 1.54 | 3,500 |
| Molot 12 (2+2) | 12″ | dual 2 Ω | 34.5 | 0.88 | 1.52 | 0.28 | 300 |
| Patriot 12 (2+2) | 12″ | dual 2 Ω | 27.2 | 0.32 | 0.97 | 0.98 | 1,500 |
| Pobeda 12 (2+2) | 12″ | dual 2 Ω | 35.2 | 0.42 | 0.91 | 0.98 | 1,200 |
| Symphony 12 (2+2) | 12″ | dual 2 Ω | 30.8 | 0.41 | 1.18 | 0.91 | 600 |
| TT 12 (2+2) | 12″ | dual 2 Ω | 32.2 | 0.63 | 1.20 | 0.79 | 500 |
| Ultimatum 12 (1+1) | 12″ | dual 1 Ω | 29.7 | 0.43 | 0.82 | 1.57 | 4,000 |
| AS-D15.3D2 Armada (2+2) | 15″ | dual 2 Ω | 25.2 | 0.63 | 2.55 | — | 900 |
| AS-D15.3TD2 (2+2) | 15″ | dual 2 Ω | 28.8 | 0.68 | 2.77 | — | 600 |
| AS-D15.3TD4 (4+4) | 15″ | dual 4 Ω | 28.8 | 0.68 | 2.77 | — | 600 |
| Bulava 15 (2+2) | 15″ | dual 2 Ω | 25.7 | 0.54 | 3.73 | 1.18 | 900 |
| Decibel 15 (1+1) | 15″ | dual 1 Ω | 22.1 | 0.46 | 3.96 | 1.61 | 3,500 |
| Patriot 15 (2+2) | 15″ | dual 2 Ω | 27.9 | 0.36 | 2.66 | 1.18 | 2,000 |
| Pobeda 15 (2+2) | 15″ | dual 2 Ω | 31.6 | 0.40 | 3.51 | 0.98 | 1,200 |
| TT 15 (2+2) | 15″ | dual 2 Ω | 26.3 | 0.78 | 3.17 | 0.79 | 500 |
| Ultimatum 15 (1+1) ! | 15″ | dual 1 Ω | 28.3 | 0.36 | 1.35 | 1.57 | 4,000 |
| Bulava 18 (2+2) | 18″ | dual 2 Ω | 25.8 | 0.72 | 5.81 | 1.18 | 900 |
| Decibel 18 (1+1) | 18″ | dual 1 Ω | 19.6 | 0.44 | 9.54 | 1.61 | 3,500 |
| Patriot 18 (2+2) | 18″ | dual 2 Ω | 26.1 | 0.33 | 5.37 | 1.26 | 2,500 |
| Pobeda 18 (2+2) | 18″ | dual 2 Ω | 25.5 | 0.73 | 6.04 | 1.06 | 1,200 |
Click a column header to sort. “!” means the model’s published specs don’t add up; details are on its page.