Helix 4-channel amplifier D FOUR

HELIX D FOUR

The new entry into the HELIX world! The amplifiers of the D series are solely modest with respect to pricing. Everything else is thoroughly pure HELIX quality without any compromises. Loads of power, excellent measurement data and a whole bunch of features ensure a pristine and crispy sound experience!

Absolutely nothing has been missed for powerful sound reproduction - the active crossover with highpass filter, lowpass filter, bandpass and bass boost are equally as self-evident as the intelligent highlevel input that incorporates Audiotec Fischer´s proprietary ADEP circuit. It is even possible to add an optional volume remote control for the amp channels C and D which is very useful if those outputs are firing a subwoofer.

The elegant design not only states right from the beginning the amp's heritage but also allows an easy integration into your car thanks to its compact dimensions. That is sound-tuning at its best!

Features

• 4-channel high- and lowlevel input
• Smart highlevel input with ADEP circuit (Advanced Diagnostics Error Protection) and Auto Turn-On function
• Fully active crossover with highpass, lowpass, bandpass and bass boost
• Extremely stable MOSFET power supply
• “Input mode” switch for flexible input signal routing
• Highlevel input sensitivity up to 14 Volts max.
• Cable remote control for volume adjustment of the channels C & D optionally available
• Massive aluminum heatsink for best cooling conditions

Technical data

• Output power RMS ≤ 1% THD+N
• @ 4 Ohms 4 x 65 Watts
• @ 2 Ohms 4 x 90 Watts
• bridged @ 4 Ohms 2 x 180 Watts
• Max. output power per channel* Up to 160 Watts RMS @ 2 Ohms
• Amplifier technology Class AB
• Inputs 4 x RCA / Cinch, 4 x Highlevel speaker input, 1 x Remote In, 1 x Remote control input
• Input sensitivity RCA / Cinch 0.5 - 6 Volts, Highlevel 1 - 14 Volts
• Input impedance RCA / Cinch 30 kOhms
• Input impedance highlevel 12 Ohms
• Outputs 4 x Speaker output
• Frequency response 10 Hz - 50.000 Hz
• Bass boost 0 - 12 dB / 45 Hz
• Highpass 15 Hz - 4,000 Hz adjustable
• Lowpass 40 Hz - 4,000 Hz adjustable
• Bandpass 15 Hz - 4,000 Hz adjustable
• Slope high- / lowpass 12 dB/Oct.
• Signal-to-noise ratio analog input 108 dB (A-weighted)
• Distortion (THD) 0.02 %
• Damping factor 65
• Operating voltage 9.6 - 16 Volts
• Idle current 1000 mA
• Fuse 2 x 25 A Maxi-fuse (APX)
• Additional features Active, adjustable crossover, bass boost, input mode switch, highlevel input with automatic turn on function and Advanced Diagnostics Error Protection (ADEP), optional cable remote control
• Dimensions (H x W x D) 53 x 320 x 230 mm / 2.09 x 12.60 x 9.06”