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Audio System M12 EVO 2 — specifications and enclosures
Audio System M12 EVO 2: T/S parameters, mounting dimensions and manufacturer enclosure recommendations. Read the original PDF and load the driver into the 3D designer.
Coil connection for T/S measurements is not explicit; electrical simulation requires verified Re and Le.
Manufacturer enclosure recommendations
Manufacturer recommendationSealed 30.0 L
The published volume is not confirmed as net air volume. Check the definition in the manual.
Manufacturer volume includes the woofer and port. Deduct their actual occupied volume to obtain net air volume.
Documentation only — check the limitations before use.
PDF · page 2 Manufacturer recommendationBass-reflex 50.0 L
Tuning Fb: 37.0 Hz.
Manufacturer port: shape: round, diameter: 90.0 mm, length: 200.0 mm, count: 1.
The published volume is not confirmed as net air volume. Check the definition in the manual.
Manufacturer volume includes the woofer and port. Deduct their actual occupied volume to obtain net air volume.
Documentation only — check the limitations before use.
PDF · page 2 Calculator parameters
| Fs | 33.0 Hz |
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| Vas | 58.7 L |
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| Qes | 0.49 |
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| Qms | 4.01 |
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| Re | Not provided / unverified |
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| Sd | 510.0 cm² |
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| Le | Not provided / unverified |
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| One-way linear Xmax | 12.0 mm |
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| Frame diameter | 32.0 cm |
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| Mounting cutout | 27.8 cm |
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| Mounting depth | 13.2 cm |
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Additional manufacturer specifications
| Published coil resistance | 2× 1,8 Ω |
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| Published Qts | 0.43 |
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Data is for one subwoofer. Manufacturer recommendations are separate from CarBoxLab calculations. Net air volume excludes the driver, port and bracing; design dimensions are external. Loading a recommendation transfers the verified volume and tuning; confirm port geometry and construction separately.
Source documentation
Manufacturer technical documentation
Original manufacturer documents are not translated. Data reviewed: 2026-10-31.