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100w RMS x 4, or 200w x 2 bridged at 4 ohms, and incredibly small – 50 x 230 x 154 mm.
100w RMS x 4, or 200w x 2 bridged at 4 ohms, and incredibly small – 50 x 230 x 154 mm.
The Helix M FOUR has a ton of power, with 100 Watts RMS per channel into both 4 Ohms and 2 Ohms load.
The M FOUR stays totally cool thanks to the highly efficient Class D design topology. 3-channel or 2-channel configurations are possible as well, delivering up to 2 x 200 Watts RMS of clean and undistorted output power.
The M FOUR is equipped with Helix standards like "start-stop capability" and proprietary "ADEP" high level input so that it easily deals with all installation challenges of modern cars.
| Output power RMS ≤ 1% THD+N | |
| - @ 4 Ohms | 4 x 100 Watts |
| - @ 2 Ohms | 4 x 100 Watts |
| - @ 1 Ohm | - |
| - bridged @ 4 Ohms | 2 x 200 Watts |
| - bridged @ 2 Ohms | - |
| Max. output power per channel* | Up to 135 Watts RMS @ 4 / 2 Ohms |
| Amplifier technology | Class D |
| Inputs | 4 x RCA / Cinch 4 x Highlevel speaker input 1 x Remote In |
| Input sensitivity | RCA / Cinch 0.5 - 6 Volts Highlevel 1.3 - 13 Volts |
| Input impedance RCA / Cinch | 20 kOhms |
| Input impedance highlevel | 9 - 33 Ohms |
| Outputs | 4 x Speaker output |
| Output voltage RCA / Cinch | - |
| Signal converter for digital input | - |
| Frequency response | 10 Hz - 30,000 Hz |
| Bass boost | - |
| Highpass | 15 Hz - 4,000 Hz adjustable |
| Lowpass | 40 Hz - 4,000 Hz adjustable |
| Bandpass | 15 Hz - 4,000 Hz adjustable |
| Subsonic | - |
| Phase | - |
| Slope high- / lowpass | 12 dB/Oct. |
| Slope subsonic / lowpass | - |
| Signal-to-noise ratio digital input | - |
| Signal-to-noise ratio analog input | 98 dB (A-weighted) |
| Distortion (THD) | 0.05 % |
| Damping factor | 100 |
| Operating voltage | 10.5 - 16 Volts (max. 5 sec. down to 6 Volts) |
| Idle current | 1,100 mA |
| Operating temperature range | -40° C to +70° C |
| Fuse | 2 x 30 A Maxi-fuse (APX) |
| Power rating | DC 12 V ⎓ 45 A max. |
| Additional features | Active, adjustable crossover, input mode switch, Start-Stop capability, highlevel input with automatic turn on function and Advanced Diagnostics Error Protection (ADEP) |
| Dimensions (H x W x D) | 50 x 230 x 154 mm / 2.00 x 9.06 x 6.06” |
* In typical multi-channel applications (2- / 3-way system + rear + subwoofer)