AMPIRE subwoofers
Thiele/Small parameters of AMPIRE subwoofers (8″, 10″, 12″, 15″) and a recommended sealed and ported box for every model, in a free sub box calculator.
13 models
| Model | Size | Voice coils | Fs, Hz | Qts | Vas, ft³ | Xmax, in | RMS, W |
|---|---|---|---|---|---|---|---|
| FLAT8 | 8″ | 4 Ω | 44.6 | 0.62 | 0.36 | 0.39 | 200 |
| BOLD102 | 10″ | dual 2 Ω | 40.1 | 0.39 | 0.53 | 0.63 | 1,000 |
| BOLD104 | 10″ | dual 4 Ω | 37.7 | 0.37 | 0.59 | 0.63 | 1,000 |
| FLAT10 | 10″ | 4 Ω | 37.9 | 0.55 | 0.82 | 0.39 | 300 |
| VLEX10.4 | 10″ | 4 Ω | 39.5 | 0.37 | 0.92 | 0.55 | 250 |
| BLACK12.1 | 12″ | dual 1 Ω | 30.7 | 0.35 | 0.91 | 0.98 | 2,000 |
| BLACK12.2 | 12″ | dual 2 Ω | 29.9 | 0.36 | 0.87 | 0.98 | 2,000 |
| BOLD122 | 12″ | dual 2 Ω | 40.1 | 0.48 | 0.78 | 0.63 | 1,000 |
| BOLD124 | 12″ | dual 4 Ω | 42.8 | 0.50 | 0.89 | 0.63 | 1,000 |
| FLAT12 | 12″ | 4 Ω | 24.6 | 0.60 | 2.80 | 0.39 | 350 |
| VLEX12.4 | 12″ | 4 Ω | 33.5 | 0.38 | 2.01 | 0.55 | 350 |
| BLACK15.1 | 15″ | dual 1 Ω | 27.5 | 0.39 | 2.86 | 0.98 | 2,000 |
| BLACK15.2 | 15″ | dual 2 Ω | 29 | 0.37 | 2.88 | 0.98 | 2,000 |
Click a column header to sort. “!” means the model’s published specs don’t add up; details are on its page.