Helix
HELIX V TWELVE DSP MK2
HELIX V TWELVE DSP MK2
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HELIX V TWELVE DSP MK2
The new king of multitools
The V TWELVE DSP MK2 is the new problem solver when it comes to upgrading premium sound systems in today's vehicles. Like its predecessor, it combines 12 highlevel inputs, 6 RCA inputs, 14 DSP channels and 12 output stages with up to 160 RMS at 2 Ohms in an ultra-compact housing that has the footprint of just two envelopes.
Multifunction rethought
Even if a vehicle is already equipped with a premium sound system ex works, whose amplifier often has more than 10 channels, the sound quality does not always meet one's own expectations. In many cases, a replacement is no longer possible, so that only an amplifier with the same number of highlevel inputs can be considered for upgrading the system.
For this reason, the HELIX V TWELVE DSP MK2 offers 12 highlevel inputs and just as many amplifier channels to ensure optimal adaptation to existing multi-channel sound systems. In addition, the V TWELVE DSP MK2 is also equipped with a digital input and a HEC slot which allows to extend the sound system by additional signal sources, such as Bluetooth audio streaming or a high-res audio player.
The management of the incredible fourteen (14!) separate DSP channels is handled by the powerful, integrated 64 Bit DSP in combination with the unique DSP PC-Tool software.
In addition, the new, future-proof Smart Control Port (SCP) facilitates the connection of accessories and, in addition to a compact and secure plug connection, offers an integrated power supply for remote controls such as the CONDUCTOR or DIRECTOR, which significantly reduces the number of cables required and thus the required installation space.
Virtual Channel Processing – this is how signal routing works today
The adaptation to modern OE sound systems via an increasing number of inputs has a significant impact on the complexity of the signal routing inside the amplifier. Especially when several input signals are mixed together and then split again into multi-way systems, conventional routing concepts quickly reach their limits. Audiotec Fischer's new multi-stage "Virtual Channel Processing", in conjunction with the recognized user-friendly DSP PC-Tool software makes it easy to realize even highly complex system configurations. Besides, it allows to freely assign our proprietary FX sound features such as "RealCenter" or "Augmented Bass Processing". But thanks to its enormous number of channels, the V TWELVE DSP MK2 is also a prime example for applications in which a 1-to-1 routing (IOR) makes sense.
Rapid processing power – thanks to ACO
Such a huge number of channels not only requires a rapid processing power in the signal path – Audiotec Fischer's proprietary 32 Bit ACO platform takes over all control tasks and thus ensures exceptional 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 or RealCenter are just as natural with the V TWELVE DSP MK2 as a 12-channel input EQ including our Input Signal Analyzer (ISA) for easy analysis and compensation of the input signals from OE radios.
Perfect sound without compromises
The sound performance of the new HELIX V TWELVE DSP MK2 is as impressive as its range of features. The highly efficient Class GD technology and excellent A/D and D/A converters from BurrBrown ensure optimal sound performance, best possible signal-to-noise ratio and lowest distortion. Thus, despite its extremely high flexibility and super compact design, the V TWELVE DSP MK2 is an sound masterpiece that does not need to hide from the absolute top class at all.
Features
- Up to 160 W RMS output power per channel into 2 Ω
- “Pure Class GD” concept for outstanding sound quality combined with best possible efficiency
- Extremely powerful 64 Bit “fixed point” Audio DSP
- A/D and D/A signal converters from BurrBrown
- ACO – Advanced 32 Bit CoProcessor platform for system and DSP features like:
- 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
- High power 12-channel highlevel input with up to 32 V RMS input sensitivity and ADEP.3 circuit
- Two processed RCA / Cinch outputs
- 1:1 IOR (Input-to-Output Routing) – same number of highlevel inputs and amplifier outputs
- VCP (Virtual Channel Processing) allows even more flexible configuration for highly complex sound systems
- Compact, future-proof SCP (Smart Control Port) for connecting remote controls and accessories
- HEC slot for system add-ons like Bluetooth® HD Audio Streaming, High Resolution Audio Streaming via USB etc.
- Automatic Remote switch
- Start-Stop capability down to 6 Volt supply voltage
- Compact design with low heat dissipation thanks to extraordinary efficiency
Special features:
Pure Class GD amplifier technology
Audiotec Fischers proprietary Pure Class GD concept takes the efficiency of conventional Class D amps to the next level. By varying the internal supply voltage depending on the amplifier’s input signals, idle losses are significantly reduced and overall efficiency is close to maximum at any time.
So heat dissipation is almost negligible thus allowing smallest heat sinks and most compact form factors. Besides that Pure Class GD amp outperforms conventional Class D designs in terms of sound quality by implementing a fully differential signal path and improved output filter design.
ACO – Advanced 32 Bit CoProcessor
The HELIX V TWELVE DSP MK2 incorporates an extraordinary powerful 32 Bit CoProcessor of the latest generation for all monitoring and communication tasks, both internally and externally. In opposite to the 8 Bit predecessor generation this MCU achieves way higher speeds with respect to setup switching and data communication with our DSP PC-Tool software. A further significant advantage is the integrated, native boot loader of the CoProcessor.
It allows software upgrades of all components of the integrated DSP in order to adjust the microcontroller-controlled ADEP.3 circuit for example to future requirements of the diagnostic system of factory radios or if the device will be extended with additional interfaces. In addition, thanks to the new flash memory, the ACO offers 10 memory locations for sound setups instead of the common two.
Smart highlevel input ADEP.3
Modern, factory-installed car radios incorporate sophisticated possibilities of diagnosing the connected speakers. In particular the latest generation of car radios are equipped with additional monitoring functions so that failure messages and loss of specific features (e.g. fader function) quite often appear if an amplifier will be hooked up – but not with the V TWELVE DSP MK2.
The new ADEP.3 circuit (Advanced Diagnostics Error Protection, 3rd Generation) avoids all these problems without loading the speaker outputs of the OE radio during high volumes unnecessarily.
Start-Stop capability
The switched power supply of the HELIX V TWELVE DSP MK2 assures a constant internal supply voltage even if the battery’s voltage drops to 6 Volts during engine crank.
Power Save Mode
The Power Save Mode is incorporated in the basic setup. It allows to significantly reduce the power consumption of the amplifiers that are connected to the HELIX V TWELVE DSP MK2 once there’s no input signal present for more than 60 seconds. Please note that in many up-to-date cars with “CAN” or any other internal bus structures it may happen that the radio remains “invisibly” turned on for up to 45 min. even after locking and leaving the car! Once the “Power Save Mode“ is active the remote output and therefore the connected amplifiers will be turned off.
The V TWELVE DSP MK2 will reactivate the remote output within a second if a music signal is applied. It is possible to either modify the turn-off time of 60 sec. or completely deactivate the “Power Save Mode” via the DSP PC-Tool software.
Note: The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of such marks by Audiotec Fischer GmbH is under license. Other trademarks and trade names are those 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 (e.g. our MTK1) is sufficient for TuneEQ to independently and precisely adjust the equalizers to the desired reference curve. TuneEQ uses the full function set of the parametric equalizer including center frequency, Q-factor and gain adjustment. And since the highly complex arithmetic operations required for this run in the background, you also save a lot of time when optimizing your sound with TuneEQ.
RealCenter
The “RealCenter” feature is an algorithm, developed by Audiotec Fischer, that emphasizes the music information which is present in both the left and right front channel to create an unique center signal. In contrast to common procedures, in which only the channels are summed up, the intensity of the center signal is also dynamically controlled by the stereophonic informational content of the left and right channel.
Sounds complicated but this effect is astonishing: That means if solely the left or right channel delivers an audio signal, the center channel will not reproduce a signal. In the case of common algorithms, the volume level of the center channel is only reduced by 6 dB (= half volume level). Audiotec Fischer’s “RealCenter” allows a unique, broadened sound staging for both driver and co-driver at the same time! Therefore, the disadvantages of a conventional center channel, such as an intrusive, small sound stage, are things 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”, has been especially developed to dramatically improve the bass reproduction of subwoofers.
The “Dynamic Bass Enhancement” ingeniously combines maximum deep bass and highest sound pressure – regardless of the music style or the tone controls in the head unit. Depending on the input signal, the “Dynamic Bass Enhancement” gains the lower frequency range and varies the cut-off frequency of the subsonic filter. The result is a significantly more powerful and deeper bass response at low and medium volume levels without the risk of overloading the subwoofer neither mechanically nor electrically at high volume levels. It is simply fascinating which bass performance is suddenly possible.
If you want an even lower and “darker” bass reproduction, the “SubXpander” can be additionally activated. Therefore, subharmonic tones are added to the fundamental tones in the frequency range between 50 and 100 Hz.
Technical data
| Power RMS ≤ 1% THD+N | |
| - @ 4 Ohms | 12 x 75 Watts |
| - @ 2 Ohms | 12 x 120 Watts |
| - @ 1 Ohm | - |
| - bridged @ 4 Ohms | - |
| - bridged @ 2 Ohms | - |
| Max. output power per channel* | Up to 160 Watts RMS @ 2 Ohms |
| Amplifier technology | Pure Class GD |
| Inputs | 6 x RCA / Cinch 12 x Highlevel speaker input 1 x Optical SPDIF (12 - 96 kHz) 1 x Remote In |
| Input sensitivity | RCA / Cinch: max. 4 V or max. 8 V Highlevel: max. 16 V or max. 32 V |
| Input impedance RCA / Cinch | 12 kOhms |
| Input impedance highlevel | 9 - 33 Ohms or 20 kOhms |
| Outputs | 12 x Speaker output 2 x RCA / Cinch 2 x Remote Out |
| Output voltage RCA / Cinch | 3 Volts |
| Frequency response | 20 Hz - 22,000 Hz |
| DSP resolution | 64 Bit |
| DSP power | 295 MHz (1.2 billion MAC operations/second) |
| Sampling rate | 48 kHz |
| DSP type | Audio signal processor |
| Signal converters | A/D: BurrBrown 24 Bit D/A: BurrBrown 24 Bit |
| Signal-to-noise ratio digital input | 107 dB (A-weighted) |
| Signal-to-noise ration analog input | 102 dB (A-weighted) |
| Distortion (THD) | < 0.015 % |
| Damping factor | > 70 |
| Operating voltage | 10.5 - 18 Volts (max. 5 sec.down to 6 Volts) |
| Power rating | DC 12 V ⎓ 80 A max. |
| Idle current | 700 mA |
| Max. remote output current | 500 mA |
| Operating temperature range | -40° C to +70° C |
| Fuse | 2 x 30 A LP-Mini-fuse (APS) |
| Additional features | HEC slot, ADEP.3 circuit, Smart Control Port, Auto Remote switch, 32 Bit CoProcessor |
| Dimensions (H x W x D) | 44 x 220 x 220 mm / 1.73 x 8.66 x 8.66“ |
