HELIX V TWELVE DSP MK2 | DSP amplifier with 12 x 75W

The V TWELVE DSP MK2 is the new solution for upgrading premium sound systems in today's vehicles. Like its predecessor, it combines 12 high-level inputs, 6 RCA inputs, 14 DSP channels, and 12 power amplifiers with up to 160 W RMS at 2 ohms in an ultra-compact housing that occupies the footprint of just two envelopes.

Multifunction reimagined

Even if a vehicle is already equipped with a premium sound system from the factory, whose amplifier often has more than 10 channels, the sound quality doesn't always meet expectations. Replacing existing components is often no longer possible, so the only option for expansion is an amplifier with the same number of high-level inputs.

For this reason, the HELIX V TWELVE DSP MK2 offers not only 12 high-level inputs but also just as many amplifier channels to ensure optimal adaptation to existing multi-channel sound systems. Furthermore, the V TWELVE DSP MK2 is also equipped with a digital input and an HEC slot, which allows the sound system to be expanded with additional signal sources, such as Bluetooth streaming or the integration of a high-resolution audio player. The management of the incredible fourteen (14!) separate DSP channels is handled by the powerful, integrated 64-bit DSP in conjunction with our unique DSP PC-Tool software. In addition, the newly installed, future-proof Smart Control Port (SCP) simplifies the connection of accessories and, besides offering a compact and secure connection, provides an integrated power supply for remote controls such as the CONDUCTOR or DIRECTOR, significantly reducing the number of cables required and thus the installation space needed. Virtual Channel Processing – this is how signal routing works today. Adapting to modern factory sound systems, with their increasing number of signal inputs, necessitates increasingly complex signal routing within the amplifier. Especially when multiple input signals are mixed together and then split into multi-channel systems, conventional routing concepts quickly reach their limits. Audiotec Fischer's new, multi-stage "Virtual Channel Processing," in conjunction with the renowned user-friendly DSP PC-Tool software, makes it easy to map even highly complex system configurations and to freely assign proprietary FX sound features such as "RealCenter" or "Dynamic Bass Enhancement." However, thanks to its enormous number of channels, the V TWELVE DSP MK2 is also a prime example of applications where 1:1 routing (IOR) makes sense.

Rapid processing power – thanks to ACO

Such a massive number of channels requires not only processing power in the signal path – Audiotec Fischer's proprietary 32-bit ACO platform handles all control tasks and ensures plenty of speed, especially for data communication with our DSP PC-Tool software, but also for lightning-fast switching between up to ten possible sound setups. The fantastic sound effects associated with the ACO platform, such as Augmented Bass Processing, StageXpander, and RealCenter, are just as standard on the V TWELVE DSP MK2 as a 12-channel input EQ with Input Signal Analyzer (ISA) for easy analysis and compensation of the input signals from OEM radios.

Perfect sound without compromise

The sound performance of the new HELIX V TWELVE DSP MK2 is as impressive as its range of functions. Highly efficient Class GD technology and state-of-the-art AD and DA converters from BurrBrown ensure optimal sound performance, the best possible signal-to-noise ratio, and minimal distortion. Thus, despite its extremely high flexibility and very compact design, the V TWELVE DSP MK2 stands as an absolute sonic masterpiece and in no way needs to hide from the absolute top class.

Features

• Up to 160 W RMS maximum power per channel at 2 Ω
• “Pure Class GD” concept for exceptional sound quality combined with high performance
• Extremely powerful 64-bit “Fixed Point” audio DSP
• AD and DA signal converters from BurrBrown
• ACO – Advanced 32-bit CoProcessor platform for system and DSP features:
  • ISA (Input Signal Analyzer) and InputEQ for easy analysis and compensation of input signals
  • SFX sound effects – Augmented Bass Processing, StageXpander, RealCenter & Co.
  • 10 internal memory locations for sound setups
• Heavy-duty 12-channel high-level input with up to 32 V RMS input sensitivity and ADEP.3 circuitry
• Two processed RCA preamplifier outputs
• 1:1 IOR (Input-to-Output Routing) – equal number of high-level inputs and amplifier channels
• VCP (Virtual Channel Processing) allows for even more flexible configuration of highly complex sound systems
• Compact, future-proof SCP (Smart Control Port) for connecting remote controls and other accessories
• HEC slot for system expansions such as Bluetooth® HD Audio Streaming, High Resolution Audio Streaming via USB, etc.
• Automatic remote switch
• Start-stop capability down to 6 volts supply voltage
• Extremely compact dimensions and low Heat generation thanks to very high efficiency

Special Features:

Pure Class GD Amplifier Technology

The Pure Class GD concept combines the advantages of Class G technology with the principle of a Class D amplifier. This results in an exceptionally high efficiency that surpasses even conventional Class D amplifiers. The Pure Class GD concept demonstrates its advantages at low and medium output levels by varying the internal supply voltage of the power stages depending on the amplitude of the input signal. Furthermore, the entire analog signal path in this amplifier is completely symmetrical, which benefits both total harmonic distortion and signal-to-noise ratio.

ACO – Advanced 32-bit Co-Processor

The HELIX V TWELVE DSP MK2 amplifier uses a particularly powerful, latest-generation 32-bit co-processor 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 especially in data communication with our DSP PC-Tool software. Another key advantage is the integrated, native bootloader of the CoProcessor. This enables software upgrades for all components of the integrated DSP, allowing, for example, the microcontroller-controlled ADEP.3 circuit to be adapted to future changes in the diagnostic systems of factory radios or the device to be expanded with additional interfaces. Furthermore, 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 increasingly intelligent in terms of diagnosing the connected speakers. 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 straining the radio's speaker outputs at high levels. Power Save Mode is enabled in the basic settings of the DSP PC-Tool software. It allows the power consumption of the V TWELVE DSP MK2 (and any additional connected amplifiers) to be drastically reduced when no input signal is present for more than 60 seconds. As soon as Power Save Mode is active, the internal amplifier stages of the V TWELVE DSP MK2 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 shutdown delay can be varied or completely deactivated via the DSP PC-Tool software.

Start-Stop Capability

The power supply in the HELIX V TWELVE DSP MK2 amplifier ensures a stable internal voltage supply even during brief voltage drops down to 6 volts. This guarantees that the HELIX V TWELVE DSP MK2 remains fully functional even when the engine is started.

Note: The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc., and any use of these marks by Audiotec Fischer GmbH is under license. Other trademarks and trade names are the property of their respective owners.

DSP Features

TuneEQ

TuneEQ is an extremely flexible and particularly easy-to-use function for automated frequency response correction.

A single measurement per audio channel or channel pair with a suitable measurement microphone (such as our MTK1) is sufficient for TuneEQ to automatically and precisely adjust the equalizers to the desired reference curve. TuneEQ utilizes the full functionality of the parametric equalizer, including the center frequency, Q factor, and gain. And because the necessary, highly complex calculations run in the background, you also save a considerable amount of time when tuning your sound with TuneEQ. The "RealCenter" function is a proprietary algorithm from Audiotec Fischer that emphasizes the monaural information of the left and right front channels to create a unique center signal. Unlike conventional methods that simply sum the channels, this method also dynamically controls the center signal based on the stereo information content of the left and right channels. This means that the center channel does not reproduce a signal if only the left or only the right channel is supplying an audio signal. With conventional algorithms, the center channel would only be 6 dB quieter in this case. Audiotec Fischer's "RealCenter" thus enables a unique, wide soundstage – and is equally optimal for the driver and passenger! The disadvantages of a conventional center channel, such as an intrusive, narrow spatial sound reproduction, are finally a thing of the past. Augmented Bass Processing Audiotec Fischer's proprietary "Augmented Bass Processing" consists of two revolutionary sound features: "Dynamic Bass Enhancement" and "SubXpander." These have been specially developed to dramatically improve the bass reproduction of subwoofers. "Dynamic Bass Enhancement" ingeniously combines maximum deep bass foundation and high maximum sound pressure – regardless of the music genre being listened to or the sound settings on the radio. Depending on the input signal, "Dynamic Bass Enhancement" amplifies the lower frequency range and simultaneously varies the cutoff frequency of the subsonic filter. The result is significantly more powerful, deeper bass reproduction at low and medium volumes without the risk of mechanically or electrically overloading the subwoofer at high volumes. It's simply fascinating what kind of bass performance is suddenly possible. For those who want the low frequencies even deeper and "blacker," the "SubXpander" can also be activated. Here, subharmonic tones are added to the fundamental tones in the frequency range between 50 and 100 Hz.

Technical Data

RMS Power ≤ 1% THD+N
- @ 4 Ohm	12 x 75 Watts
- @ 2 Ohm	12 x 120 Watts
- @ 1 Ohm	-
- bridged to 4 ohms	-
- bridged to 2 ohms	-
Max. Power per channel*	Up to 160 Watts RMS @ 2 Ohms
Amplifier Technology	Pure Class GD
Inputs	6 x RCA 12 x High-level speaker input 1 x Optical SPDIF (12 - 96 kHz) 1 x Remote In
Input Sensitivity	RCA: max. 4 V or max. 8 V High-level: max. 16 V or max. 32 V
Input impedance RCA	12 kOhm
Input impedance high level	9 - 33 ohms or 20 kOhm
Outputs	12 x speaker output 2 x RCA 2 x Remote Out
Output voltage RCA	3 Volt
Frequency Range	20 Hz - 22,000 Hz
DSP Resolution	64 Bit
DSP Processing Power	295 MHz (1.2 billion MAC operations/second)
Sampling Rate	48 kHz
DSP Type	Audio Signal Processor
Signal converter	A/D: BurrBrown 24 Bit D/A: BurrBrown 24 Bit
Signal/noise ratio digital input	107 dB (A-weighted)
Signal / noise ratio analog input	102 dB (A-weighted)
Total harmonic distortion (THD)	< 0.015%
Damping factor	> 70
Operating voltage	10.5 - 18 volts (max. 5 sec. down to 6 volts)
Power consumption	DC 12 V ⎓ 80 A max.
No-load current consumption	700 mA
Max. Remote output current	500 mA
Operating temperature range	-40°C to +70°C
Fuse	2 x 30 A LP mini plug-in fuses
Additional features	HEC slot, ADEP.3 circuit, Smart Control Port, Auto Remote Switch, 32-bit CoProcessor
Dimensions (H x W x T)	44 x 220 x 220 mm

*In typical multi-channel applications (2- / 3-way system + rear + subwoofer)

Scope of delivery

1 x HELIX V TWELVE DSP MK2 amplifier
1 x Control Input-to-SCP adapter
1 x USB data cable
2 x Allen keys
1 x Mounting hardware
1 x User manual