Helix M FOUR – 4 Channel Amplifier
£299.99
£299.99
If you like to rev up your front and rear speakers, the M FOUR will be exactly the right “tool” to do so. With generously 100 Watts RMS per channel into both 4 Ohms and 2 Ohms load this amp will heat up your voice coils in no time despite its super-compact dimensions. On the other hand 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.
Needless to say that the M FOUR is equipped with a bunch of intelligent attributes like “start-stop capability” and our proprietary “ADEP” highlevel input so that it easily deals with all installation challenges of modern cars. Finally the extensive audio features will offer a sound quality at its best.
Special features:
Smart highlevel input
The latest generation of OE car radios incorporates sophisticated possibilities of diagnosing the connected speakers. If a common amplifier will be hooked up failure messages and loss of specific features (e.g. fader function) quite often appear – but not with the M FOUR.
The new ADEP circuit (Advanced Diagnostics Error Protection) avoids all these problems without loading the speaker outputs of the OE radio during high volumes unnecessarily.
Start-Stop capability
The switched power supply of the HELIX M FOUR assures operation even if the battery’s voltage drops down to 6 Volts during engine crank.
| Output power RMS / max. | |
| – @ 4 Ohms | 4 x 100 / 200 Watts |
| – @ 2 Ohms | 4 x 100 / 200 Watts |
| – @ 1 Ohm | – |
| – bridged @ 4 Ohms | 2 x 200 / 400 Watts |
| – bridged @ 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 | 13 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 |
| Fuse | 2 x 30 A Maxi-fuse (APX) |
| 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” |
