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Specifications | 12.5LF | 10.5LF | 8.5LF | 1500 |
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Nominal Size | 12" (30cm) | 10" (25cm) | 8" (20cm) | 15" (38cm) |
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Mounting Cutout Diameter | 11" (280mm) | 91⁄8" (232mm) | 73⁄16" (183mm) | 137⁄8" (353mm) |
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Mounting | 55⁄8" (143mm) | 43⁄4" (121mm) | 41⁄16" (104mm) | 73⁄4" (197mm) |
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Mounting | 63⁄8" (162mm) | 5" (127mm) | 411⁄16" (119mm) | 81⁄4" (210mm) |
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Recommended Amplifier Power | ||||
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Nominal Impedance | 2Ω/4Ω | 2Ω/4Ω | 2Ω/4Ω | 2Ω/4Ω |
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| ProSeries |
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Theile/Small Parameters | 12.5LF | 12.5LF | 10.5LF | 10.5LF | 8.5LF | 8.5LF | 1500 | 1500 |
| (2Ω) | (4Ω) | (2Ω) | (4Ω) | (2Ω) | (4Ω) | (2Ω) | (4Ω) |
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Resonant Frequency (Fs ) | 30Hz | 31Hz | 33Hz | 34Hz | 35Hz | 36Hz | 34Hz | 35Hz |
Equivalent Volume (Vas) | 84 liters | 84 liters | 35 liters | 35 liters | 21 liters | 21 liters | 155 liters | 155 liters |
| 2.97ft3 | 2.97ft3 | 1.24ft3 | 1.24ft3 | 0.74ft3 | 0.74ft3 | 5.47ft3 | 5.47ft3 |
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Total Q (Qts ) | 0.45 | 0.57 | 0.44 | 0.53 | 0.33 | 0.40 | 0.72 | 0.85 |
Electrical Q (Qes) | 0.47 | 0.61 | 0.47 | 0.57 | 0.35 | 0.42 | 0.81 | 0.97 |
Mechanical Q (Qms) | 9.8 | 9.6 | 8.0 | 7.8 | 9.0 | 9.0 | 8.3 | 8.3 |
Compliance (Cms) | 230µm/N | 230µm/N | 255µm/N | 255µm/N | 330µm/N | 330µm/N | 142µm/N | 142µm/N |
Moving Mass (Mms) | 121g | 117g | 90g | 86g | 63g | 60g | 148g | 145g |
Cone Area (Sd) | 510cm2 | 510cm2 | 315cm2 | 315cm2 | 215cm2 | 215cm2 | 876cm2 | 876cm2 |
Voice Coil Diameter | 51mm | 51mm | 51mm | 51mm | 51mm | 51mm | 51mm | 51mm |
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Voice Coil DCR (Re ) | 1.6Ω | 3.1Ω | 1.6Ω | 3.1Ω | 1.6Ω | 3.1Ω | 1.6Ω | 3.2Ω |
Voice Coil Inductance @ 1kHz (Le ) | 0.40mH | 0.55mH | 0.40mH | 0.55mH | 0.40mH | 0.55mH | 0.45mH | 0.62mH |
Linear | 8.5mm | 8.5mm | 8.5mm | 8.5mm | 8.5mm | 8.5mm | 5.5mm | 5.5mm |
40mm | 40mm | 35mm | 35mm | 35mm | 35mm | 40mm | 40mm | |
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Reference Efficiency ( ηo ) | 0.46 | 0.39 | 0.26 | 0.25 | 0.25 | 0.22 | 0.73 | 0.64 |
We provide Theile/Small Parameters for those interested in studying subwoofers further. We do not recommend you use computer software to determine enclosure sizes or type. While
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