New M FOUR now available in 24V version!
The physical size of the Helix M-series amplifiers is very small, although the feature list and power are large. This is possible thanks to advanced D-class technology.
A smart speaker-level input works even in new cars thanks to the ADEP circuit. And this amplifier won't turn off at every traffic light either, thanks to Start&Stop compatibility. The distribution filters have a wide enough range of adjustment to make distributions from subwoofer to tweeter and in between.
Despite their small size, Helix's M-Series offer plenty of power and, above all, the excellent sound quality Helix has been known for as a manufacturer for decades.
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 / RCA 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 18 - 36 Volts (max. 5 sec. down to 12 Volts)
Idle current 550 mA
Fuse 2 x 15 A Maxi-fuse (APX)
Power rating DC 24 V ⎓ 25 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"
