Helix D FOUR - 4-Kanal Verstärker

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

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 appears - but not with the D 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.

Specifications

• 4-channel amplifier (Class AB)
• Power RMS / Max.
• - @ 4 ohms 4 x 65/130 watts
• - @ 2 ohms 4 x 90/180 watts
• - @ 1 ohm -
• - bridged to 4 ohms 2 x 180/360 watts
• - jumpered to 2 ohms -
• Amplifier technology Class AB
• inputs
• 4 x cinch
• 4 x high-level speaker input
• 1 x Remote In
• 1 x remote control input
• input sensitivity
• Cinch 0.5 - 6 volts
• High level 1 - 14 volts
• Input impedance Cinch 30 kOhm
• Input impedance high level 12 ohms
• Outputs 4 x speaker output
• Output voltage RCA -
• Signal converter for the digital input -
• Frequency range 10 Hz - 50,000 Hz
• Bass Boost 0-12 dB / 45 Hz
• High pass 15 Hz - 4,000 Hz adjustable
• Low pass 40 Hz - 4,000 Hz adjustable
• Bandpass 15 Hz - 4,000 Hz controllable
• Subsonic
• Phase -
• Slope high / low pass 12 dB / oct.
• Slope Subsonic / Low Pass -
• Signal to noise ratio Digital input -
• Signal to noise ratio analog input 108 dB (A-weighted)
• Total harmonic distortion (THD) 0.02%
• Damping factor 65
• Operating voltage 9.6 - 16 volts
• No-load current consumption 1000 mA
• Fuse 2 x 25 A maxi plug fuse (FK3)
• Additional features
• Active, adjustable crossover
• Bass Boost, input mode switch
• High-level input with automatic activation and Advanced Diagnostics Error Protection (ADEP)
• optional wired remote control
• Dimensions (H x W x D) 53 x 320 x 230 mm

Delivery contents

• 1 x Amplifier HELIX D FOUR
• 1 x Mounting material
• 1 x Instruction manual