Helix D FOUR
4-channel amplifier with integrated, active crossover
$400
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.
