Audio System M12 EVO 2 - User Manual & Technical Data
Welcome
Thank you for purchasing a high-quality AUDIO SYSTEM product, featuring GERMAN SOUND.
Important: Please read this user manual completely before installation and use of the device.
Attention: Observe the regulations and instructions of your car manufacturer. Ensure correct polarity when connecting the speakers.
Important: Your purchase receipt serves as proof of warranty for any repairs or replacements. Keep your receipt, this user manual, and the original packaging in a safe place for potential future use.
Attention: Using car audio systems can impair your ability to hear important traffic sounds and may pose a hazard while driving. AUDIO SYSTEM GERMANY accepts no liability for hearing loss, bodily injury, or property damage resulting from the use or misuse of its products. We recommend having the installation performed by a qualified workshop or installation specialist, as professional installation and connection are prerequisites for a perfect sound result.
Installation Tips
Warning: Before mounting, disconnect the negative (-) terminal of your car battery. Check all connections for correct polarity, as incorrect polarity can lead to short circuits in the vehicle's electrical system. The best installation positions are the original factory locations for originality and easier mounting. Ensure the speakers are mounted flush and securely. The quality of the installation significantly impacts the sound; therefore, pay attention to damping and care during installation. Protect the speakers from heat, direct sunlight, mechanical influences, moisture, and wetness using accessories from AUDIO SYSTEM.
Attention: Route your cables so they are not pinched or run over sharp edges. This can lead to short circuits and damage.
Caution: When removing interior trim panels, plastic mounting parts may be damaged and need replacement.
Important: Correct speaker polarity is crucial. The sound can sometimes be improved by reversing the polarity of the tweeters. Experimentation and listening or measuring are recommended here!
Technical Specifications
Dimensions and Specifications
A 12-inch M12 EVO 2 subwoofer speaker from AUDIO SYSTEM, featuring a black cone, red surround, and the AUDIO SYSTEM logo on the cone and dust cap.
| Description | Value | Unit | Label |
|---|---|---|---|
| Weight | 4.4 | Kilogramm | Weight |
| External Diameter | 320 | mm | (a) |
| Installation Diameter | 278 | mm | (b) |
| Magnet Diameter | 134 | mm | (c) |
| Total Installation Depth | 149 | mm | (d) |
| Installation Depth | 132 | mm | (e) |
Diagram illustrating speaker dimensions with labels: (a) External Diameter, (b) Installation Diameter, (c) Magnet Diameter, (d) Total Installation Depth, and (e) Installation Depth.
Speaker Parameters
| Parameter | Music | RMS | Unit | Description |
|---|---|---|---|---|
| Power | 2x 325 | 2x 250 | Watt | Power |
| SPL (2.83V, 1m) | 91.1 | dB | SPL | |
| Frequency Range | 38-120 | Hz | Frequency Range | |
| DC Resistance | 2x 1.8 | Ω | DC Resistance | |
| Nominal Impedance | 2x 2 | Ω | Nominal Impedance | |
| Resonance Frequency | 33 | Hz | Resonance Frequency | |
| Voice Coil Diameter | 50.95 | mm | Voice Coil Diameter | |
| X-Max Linear Excursion | +/- 12 | mm | X-Max Linear Excursion | |
| Mechanical Q Factor | 4.01 | Qms | Mechanical Q Factor | |
| Electrical Q Factor | 0.49 | Qes | Electrical Q Factor | |
| Total Q Factor | 0.43 | Qts | Total Q Factor | |
| Moving Mass | 120 | Gramm | Moving Mass | |
| Equivalent Air Volume | 58.7 | Liter | Equivalent Air Volume | |
| Force Factor | 13.2 | Tm | Force Factor | |
| Effective Membrane Surface | 510 | cm² | Effective Membrane Surface |
Recommended Cabinets
All calculations include woofer and bass reflex tube.
Visual representations of recommended enclosure types: Sealed, Bass Reflex, and Band Pass.
- Sealed Enclosure (VG): Recommended volume of 30 Liters.
- Bass Reflex Enclosure (VBR): Recommended volume of 50 Liters. Tuning frequency (Ft) 37 Hz. Port dimensions: Diameter (d) 90 mm, Length (L) 200 mm.
- Band Pass Enclosure (V1/V2): Shows two chambers (V1, V2) with placeholders for dimensions and frequency. Specific values are not provided in the table for this type.
