Helix M FOUR DSP - 4 Kanal

HELIX M FOUR DSP

✓ That rocks – the new M FOUR DSP

The M FOUR DSP only presents itself as a four-channel amplifier at first glance - in fact, despite its small dimensions, you are dealing with a powerful control center that has no fewer than ten processed DSP channels at its disposal. And plenty of power too, because this amplifier shakes 100 watts of continuous power per channel at both 4 ohms and 2 ohms almost casually out of its sleeve. In addition, there is a fantastic equipment package, which will make your eyes light up at the latest when it comes to the price-performance ratio.  

 

✓ Sonically through and through HELIX!

Compromises in sound have no place in a HELIX product - and that is why the M FOUR DSP is also equipped with all the finesse for perfect sound. The finest, separate AD and DA converters are just as natural on the DSP circuit board made in Germany as the use of an extremely powerful DSP from Analog Devices. In addition, the six preamplifier outputs with 6 volt output voltage provide more than enough level to drive any power amplifier.

 

✓ Textbook flexibility

Even the internal amplifier section of the M FOUR DSP is truly variable - it can either be operated in four-channel mode or, thanks to its bridgeability, also be configured as a 3-channel or 2-channel amplifier.

But that's not all - in connection with the six preamplifier outputs, the system can be supplemented in a variety of ways and upgraded to up to 10 channels. Simply in combination with the other amplifiers of the M series (M ONE X, M ONE, M FOUR or M SIX) there are more than enough possibilities to expand the number of power channels. In this way, complex but still affordable and, above all, space-saving multi-channel systems with enormous performance are easily possible.

 

✓ Virtual channel processing – this is how signal routing works today

Many DSP channels need to be managed and configured sensibly - so there was no question that the M FOUR DSP was also equipped with Audiotec Fischer's innovative Virtual Channel Processing.

The adaptation to modern OE sound systems via an increasing number of signal inputs makes an increasingly complex signal routing in the amplifier unavoidable. Especially when several input signals are mixed together and then broken down again into multi-path systems, conventional routing concepts quickly reach their limits in terms of implementation and usability. The multi-stage "Virtual Channel Processing" makes it possible, in connection with the recognized user-friendly DSP PC-Tool software, to easily map even highly complex system configurations and to freely assign the proprietary FX sound features such as "RealCenter" or "Augmented Bass Processing".

 

✓ The plus in speed – thanks to ACO

Faster is better - the particularly powerful 32-bit ACO platform takes over all control tasks and ensures significantly more speed, especially in data communication with our DSP PC tool software, but also in the lightning-fast switching between the up to ten possible sound setups. But ACO offers much more - fantastic sound effects such as augmented bass processing, StageXpander or RealCenter are implemented as well as a channel-separated input EQ including input signal analyzer (ISA) for easy analysis and compensation of the input signals from OE radios, which already have a sound ex works -Setup include.

 

✓ Compact, cool and extremely practical

Despite the enormous range of functions and the rich output power, the M FOUR DSP in the typical HELIX outfit with clear lines is just as fantastically compact as an M FOUR or ONE. Thanks to its Class D amplifier technology, it keeps a "cool head" even at full power. And thanks to features such as start-stop capability, ADEP.3 circuitry and Power Save Mode, it is also ideally equipped for the now-everyday challenges of integration into OEM systems.

Features

✓ Up to 135WattRMS maximum power per channel at 4 & 2Ω

✓ Extremely powerful 64-bit "Fixed Point" audio DSP and state-of-the-art 32-bit AD and DA signal converters from AKM

✓ ACO – Advanced 32 Bit CoProcessor platform for advanced system and DSP features:

✓ ISA (Input Signal Analyzer) and InputEQ for easy analysis and compensation of the input signals

✓ SFX sound effects - Augmented Bass Processing, StageXpander, RealCenter & Co.

✓ Intelligent 6-channel high-level input with ADEP.3 circuit

✓ Six RCA outputs with a maximum output voltage of 6 volts

✓ Virtual Channel Processing (VCP) enables highly complex sound systems to be configured even more flexibly

✓ Bridgeable amplifier channels for powerful control of a woofer or subwoofer

✓ DSP circuit board made in Germany 

 

Special Features:

✓ ACO – Advanced 32 Bit CoProcessor

The HELIX M FOUR DSP amplifier uses a particularly powerful 32-bit CoProcessor of the latest generation for all internal and external control and communication tasks. In contrast to the previously used 8-bit processor, this results in significant speed advantages, not only when switching between different sound setups, but above all in data communication with our DSP PC tool software. Another major advantage is the CoProcessor's integrated, native bootloader.

This enables software upgrades of all components of the integrated DSP, for example to be able to adapt the microcontroller-controlled ADEP.3 circuit to changes in diagnostic systems of factory radios in the future or to expand the device with additional interfaces.

In addition, thanks to the new flash memory, the ACO offers space for 10 sound setups instead of the usual two.

 

✓ Intelligent high-level input ADEP.3

Modern, factory-installed car radios are becoming more and more intelligent when it comes to diagnosing the connected loudspeakers. The latest generation in particular is equipped with additional monitoring functions, so that error messages or even malfunctions can occur when an additional amplifier is connected. The new ADEP.3 circuit (Advanced Diagnostics Error Protection Generation 3) prevents these problems without unnecessarily loading the speaker outputs of the radio at high levels.

 

✓ Power Save Modus

The Power Save mode is activated in the basic settings of the DSP PC-Tool software. It allows the power consumption of the M FOUR DSP (and any additional connected amplifiers) to be drastically reduced if there is no input signal for longer than 60 seconds. As soon as the "Power Save Mode" is active, the internal amplifier stages of the M FOUR DSP and the Rem Out are switched off, thus significantly reducing power consumption. The amplifier returns to normal operation within 2 seconds as soon as a music signal is present at its input. The switch-off delay can be varied or completely deactivated via the DSP PC-Tool software.

 

✓ start-stop capability

The power pack in the HELIX M FOUR DSP amplifier ensures the internal power supply even in the event of short-term dips down to 6 volts. This ensures that the HELIX M FOUR DSP remains fully functional even when the engine is started.

 

DSP Features

✓ RealCenter

The "RealCenter" function is an Audiotec Fischer proprietary algorithm that emphasizes the monaural information of the left and right front channels to create a unique center signal. In contrast to conventional methods, in which only the channels are summed up, there is also a dynamic control of the center signal through the stereophonic information content of the left and right channel. This means that the center channel does not reproduce a signal if only the left channel or only the right channel provides an audio signal. With the usual algorithms, the center channel would only be 6 dB quieter in this case. Audiotec Fischer's "RealCenter" thus enables a unique, wide-ranging stage image - and that's ideal for driver and passenger alike! The disadvantages of a conventional center channel, such as an obtrusive, narrow spatial sound representation, are finally a thing of the past.

 

✓ Augmented Bass Processing

Audiotec Fischer's proprietary "Augmented Bass Processing", consisting of the two revolutionary sound features: "Dynamic Bass Enhancement" and "SubXpander". These are specifically designed to dramatically improve bass response from subwoofers.

"Dynamic Bass Enhancement" combines in an ingenious way maximum deep bass foundation and high maximum sound pressure - regardless of the type of music you are listening to or the sound settings on the radio. Depending on the input signal, "Dynamic Bass Enhancement" boosts the lower frequency range on the one hand and varies the cut-off frequency of the subsonic filter on the other. The result is a significantly more powerful, deeper bass reproduction at low and medium volumes without running the risk of mechanically or electrically overloading the subwoofer at high volumes. It's simply fascinating what kind of bass performance is suddenly possible.

If you want the bass range to be a little deeper and "blacker", you can also activate the "SubXpander". Here, additional subharmonic tones are added to the fundamental tones in the frequency range between 50 and 100 Hz.

 

✓ StageXpander

Depending on the arrangement of the loudspeakers in the vehicle, a more or less wide stereo stage can be created on the front seats. If a center loudspeaker is also installed, this sometimes additionally limits the spatial reproduction of the music. This is where Audiotec Fischer's new "StageXpander" comes into its own - a sound feature that seems to eliminate acoustic boundaries and thus enables a significantly broader stereo base without negatively affecting the precision in the localization of voices or instruments. The effect can be adjusted to personal taste in four stages.

 

✓ ClarityXpander

Would you like more transparency and substance in the high-frequency reproduction? Audiotec Fischer now offers exactly the right tool for this with the "ClarityXpander".

Correctly dosed (and therefore selectable in three stages), it gives the overtones additional radiance - particularly useful if the original loudspeakers lack the necessary shine in the high-frequency range. The extra treble kick is not only available for the two front channels, but also separately adjustable for the center channel. And because especially with the latter a little bit too much in connection with musical material rich in overtones tires the ear, an automatic, dynamic control of the additional overtone component can even be activated here.

 

Technical specifications

Power RMS  ≤ 1% THD+N
- @ 4 Ohm	4 x 100 Watt
- @ 2 Ohm	4 x 100 Watt
- @ 1 Ohm	-
- bridged in 4 ohms	2 x 200 Watt
- bridged in 2 ohms	-
Max. power per channel*	Up to 135 watts RMS @ 4 / 2 Ohm
amplifier technology	Class D
inputs	6 x Cinch 6 x high level speaker input 1x Optical SPDIF (12 - 96 kHz) 1 x Remote In
input sensitivity	Cinch 1 - 4 Volts Hochpegel 5 - 20 Volts
input impedance Cinch	22 kOhm
input impedance Highlevel	9 - 33 Ohm oder 20 kOhm
exits	4 x speaker output 6 x Cinch 2 x Remote Out
output voltage Cinch	6 Volt RMS
frequency range	20 Hz - 22,000 Hz
DSP resolution	64 Bit
DSP computing power	295 MHz (1.2 billion MAC operations/second)
sampling rate	48 kHz
DSP Type	Audio signal processor
Signal to noise ratio digital input	105 dB (A-weighted)
Signal-to-noise ratio analog input	102 dB (A-weighted)
Klirrfactor (THD)	< 0,03 %
damping factor	100
operating voltage	10.5 - 16 volts (max. 5 sec down to 6 volts)
no-load current consumption	1500 mA
Max. Remote- output current	500 mA
fuse	2 x 30 A Maxi Plug-in fuse (FK3)
Additional features	ADEP.3 Circuit, Auto Remote Switch, 32 Bit CoProcessor, Control Input
Dimensions (H x B x T)	50 x 230 x 154 mm

✓ scope of delivery

1 x Amplifier Helix M FOUR DSP

1 x Line Output-to-RCA / Cinch Kabel

1 x USB Kabel

1 x mounting material

1 * Instruction Manual

operation manual
☞(Download)

DSP Tool Center
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Shipping countries:
✓ Germany
✓ Austria
✓ France