{"product_id":"helix-m-four-dsp-4-channel-amplifier-with-10-channel-dsp-6-channel-highlevel-input-aco-platform","title":"HELIX M FOUR DSP 4-channel amplifier with 10-channel DSP, 6-channel highlevel input \u0026 ACO platform","description":"\u003cdiv class=\"product-icons\"\u003e \u003cdiv\u003e\u003cstrong\u003e\u003cspan style=\"font-size: 14pt;\"\u003eHELIX M FOUR DSP\u003c\/span\u003e\u003c\/strong\u003e\u003c\/div\u003e \u003cdiv\u003e \u003cdiv class=\"detail--supply-content\"\u003e \u003cdiv class=\"product--supply-inner\"\u003e \u003cdiv id=\"description--text\" class=\"product--description\"\u003e \u003ch4\u003eThat rocks – the new M FOUR DSP\u003c\/h4\u003e \u003cp\u003eThe M FOUR DSP is more than “just” another four-channel amplifier – rather, despite its small dimensions, you are dealing with a powerful control center that has not less than a total of ten processed DSP channels. In addition, the amplifier delivers plentiful output power with generously 100 Watts RMS per channel into both 4 Ohms and 2 Ohms load.\u003cbr\u003eFinally, its awesome price-performance ratio in combination with the fantastic feature set will ensure bright eyes.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e \u003ch4\u003eTonally absolutely HELIX!\u003c\/h4\u003e \u003cp\u003eCompromises in terms of sound quality have no place in a HELIX product – and that's why the M FOUR DSP is equipped with all the finesse for perfect sound. Of course, excellent and separate AD and DA converters are just as natural as on the DSP circuit board, which is completely manufactured in Germany, you will find only excellent, separate AD and DA converters as well as an extremely powerful DSP from Analog Devices. In addition, the six pre-amplifier outputs with 6 Volts output voltage provide more than enough level to drive any additional amplifier.\u003c\/p\u003e \u003ch4\u003eMaximum flexibility\u003c\/h4\u003e \u003cp\u003eEven the internal amplifier section of the M FOUR DSP is extremely variable – it can either be operated in 4-channel mode or, thanks to its bridging capability, can also be configured as a 3-channel or even 2-channel amplifier.\u003cbr\u003eBut that's not all – in connection with the six pre-amplifier outputs, the sound system can be expanded in a diverse manner and upgraded to up to 10 channels.\u003cbr\u003eIn combination with 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.\u003cbr\u003eThis makes complex, yet affordable and, above all, space-saving multi-channel systems with enormous performance possible.\u003c\/p\u003e \u003ch4\u003eVirtual Channel Processing – that´s how signal routing works today\u003c\/h4\u003e \u003cp\u003eMany DSP channels need to be managed and configured properly – so there was no question that the M FOUR DSP is also equipped with Audiotec Fischer's innovative virtual channel processing.\u003cbr\u003eThe 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, both in terms of implementation and usability. 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\".\u003c\/p\u003e \u003ch4\u003eThe plus in speed – thanks to ACO\u003c\/h4\u003e \u003cp\u003eFaster is better – the particularly powerful 32-bit ACO platform takes over all control tasks and ensures significantly more speed, especially for data communication with our DSP PC-Tool software but also for the lightning-fast switching between up to ten sound setups. But ACO offers much more – fantastic sound effects such as Augmented Bass Processing or RealCenter are implemented as well as a channel-separated Input EQ including the Input Signal Analyzer (ISA) for easy analysis and compensation of input signals of OE radios that already includes an “ex works” sound setup.\u003c\/p\u003e \u003ch4\u003eCompact, cool and absolutely practical\u003c\/h4\u003e \u003cp\u003eDespite its vast range of functions and huge output power, the M FOUR DSP presents itself in the same classic, compact HELIX design with distinctive lines like a HELIX M FOUR or M 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 circuit and power save mode, it is also ideally equipped for the now everyday challenges of OEM integration.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv id=\"features\" class=\"detail-features-headline\"\u003e \u003ch3\u003eFeatures\u003c\/h3\u003e \u003c\/div\u003e \u003cdiv class=\"product--features\"\u003e \u003cul\u003e \u003cli\u003eUp to 135 Watts RMS max. output power per channel into 4 \u0026amp; 2 Ω\u003c\/li\u003e \u003cli\u003eExtremely powerful 64 Bit “fixed point” Audio DSP and state-of-the-art 32 Bit AD and DA signal converters from AKM\u003c\/li\u003e \u003cli\u003eACO – Advanced 32-Bit CoProcessor platform for enhanced system and DSP features like:\u003c\/li\u003e \u003cul\u003e \u003cli\u003eISA (Input Signal Analyzer) and InputEQ for easy analysis and compensation of input signals\u003c\/li\u003e \u003cli\u003eSFX sound effects – Augmented Bass Processing, StageXpander, RealCenter \u0026amp; Co.\u003c\/li\u003e \u003c\/ul\u003e \u003cli\u003eSmart 6-channel highlevel input with ADEP.3 circuit\u003c\/li\u003e \u003cli\u003eSix RCA \/ Cinch line outputs with max. 6 Volts output voltage\u003c\/li\u003e \u003cli\u003eVirtual Channel Processing (VCP) allows even more flexible configuration for highly complex sound systems\u003c\/li\u003e \u003cli\u003eBridgeable amplifier channels for driving powerful woofer or subwoofer\u003c\/li\u003e \u003cli\u003eDSP-board manufactured in Germany\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eSpecial features:\u003c\/h3\u003e \u003ch4\u003eACO – Advanced 32-Bit CoProcessor\u003c\/h4\u003e \u003cp\u003eThe HELIX M FOUR DSP incorporates an extraordinarily 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.\u003cbr\u003eIt 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.\u003c\/p\u003e \u003ch4\u003eSmart high level input ADEP.3\u003c\/h4\u003e \u003cp\u003eModern, factory-installed car radios incorporate sophisticated possibilities for 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 is hooked up – but not with the M FOUR DSP.\u003cbr\u003eThe 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.\u003c\/p\u003e \u003ch4\u003ePower Save Mode\u003c\/h4\u003e \u003cp\u003eThe Power Save Mode is incorporated in the basic setup. It allows to a significant reduction in the power consumption of the amplifiers that are connected to the HELIX M FOUR DSP 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.\u003cbr\u003eThe M-FOUR DSP 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.\u003c\/p\u003e \u003ch4\u003eStart-Stop capability\u003c\/h4\u003e \u003cp\u003eThe switched power supply of the HELIX M FOUR DSP assures a constant internal supply voltage even if the battery’s voltage drops to 6 Volts during engine crank.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv id=\"dspfeatures\" class=\"product--dspfeatures-headline\"\u003e \u003ch3\u003eDSP features\u003c\/h3\u003e \u003c\/div\u003e \u003cdiv class=\"detail--dspfeatures\"\u003e \u003ch4\u003eRealCenter\u003c\/h4\u003e \u003cp\u003eThe “RealCenter” feature is an algorithm, developed by Audiotec Fischer, that emphasizes the music information that is present in both the left and right front channels 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 channels.\u003cbr\u003eSounds 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 drivers 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.\u003c\/p\u003e \u003ch4\u003eAugmented Bass Processing\u003c\/h4\u003e \u003cp\u003eAudiotec 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.\u003cbr\u003eThe “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 that bass performance is suddenly possible.\u003cbr\u003eIf 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.\u003c\/p\u003e \u003ch4\u003eStageXpander\u003c\/h4\u003e \u003cp\u003eDepending on the speaker arrangement in the vehicle, a more or less wide stereo sound stage can be created on the front seats. A center speaker may limit the spatial reproduction of the music additionally. This is where Audiotec Fischer’s new “StageXpander” comes into play – a sound feature that seems to break the acoustic limitations and thus allows to creation a way broader stereo base without negatively affecting the precision of the localization of voices or instruments!\u003cbr\u003eThe effect can be adjusted according to your personal preferences in four steps.\u003c\/p\u003e \u003ch4\u003eClarityXpander\u003c\/h4\u003e \u003cp\u003eYou are looking for more transparency and substance in the treble reproduction? With the “ClarityXpander,” Audiotec Fischer is now offering the right tool. Properly adjusted (and therefore selectable in three steps) the feature adds additional harmonics in the upper-frequency range – this is especially useful if the original speakers lack some brilliance in the treble response. The extra treble-kick is not only available for the two front channels but also separately adjustable for the center channel. Even better – the center channel allows to activate an automatic and dynamic control so that music with “loads” of treble doesn’t fatigue your hearing.\u003c\/p\u003e \u003c\/div\u003e \u003cdiv id=\"technicaldata\" class=\"product--technicaldata-headline\"\u003e \u003ch3\u003eTechnical data\u003c\/h3\u003e \u003c\/div\u003e \u003cdiv class=\"detail--technicaldata\"\u003e \u003ctable border=\"0\" cellspacing=\"0\" cellpadding=\"0\"\u003e\n\u003ccolgroup\u003e\n\u003ccol\u003e\n\u003ccol\u003e\n\u003c\/colgroup\u003e \u003ctbody\u003e \u003ctr\u003e \u003ctd align=\"left\" valign=\"top\"\u003e\u003cstrong\u003ePower RMS  ≤ 1% THD+N\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e \u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" valign=\"top\"\u003e\u003cstrong\u003e- @ 4 Ohms\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e4 x 100 Watts \u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" valign=\"top\"\u003e\u003cstrong\u003e- @ 2 Ohms\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e4 x 100 Watts\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" valign=\"top\"\u003e\u003cstrong\u003e- @ 1 Ohm\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e- \u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" valign=\"top\"\u003e\u003cstrong\u003e- bridged @ 4 Ohms\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e2 x 200 Watts\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" valign=\"top\"\u003e\u003cstrong\u003e- bridged @ 2 Ohms\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e- \u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" valign=\"top\"\u003e\u003cstrong\u003eMax. output power per channel*\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eUp to 135 Watts RMS @ 4 \/ 2 Ohms\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" valign=\"top\"\u003e\u003cstrong\u003eAmplifier technology\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eClass D\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" valign=\"top\"\u003e\u003cstrong\u003eInputs\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e6 x RCA \/ Cinch\u003cbr\u003e6 x high-level speaker input\u003cbr\u003e1 x Optical SPDIF (12 - 96 kHz)\u003cbr\u003e1 x Remote In\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" valign=\"top\"\u003e\u003cstrong\u003eInput sensitivity\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eRCA \/ Cinch 1 - 4 Volts\u003cbr\u003eHigh level 5 - 20 Volts\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" valign=\"top\"\u003e\u003cstrong\u003eInput impedance RCA \/ Cinch\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e22 kOhms\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" valign=\"top\"\u003e\u003cstrong\u003eInput impedance highlevel\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e9 - 33 Ohms or 20 kOhms\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" valign=\"top\"\u003e\u003cstrong\u003eOutputs\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e4 x Speaker output\u003cbr\u003e6 x RCA \/ Cinch\u003cbr\u003e2 x Remote Out\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" valign=\"top\"\u003e\u003cstrong\u003eOutput voltage RCA \/ Cinch\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e6 Volts RMS\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" valign=\"top\"\u003e\u003cstrong\u003eFrequency response\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e20 Hz - 22,000 Hz\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" valign=\"top\"\u003e\u003cstrong\u003eDSP resolution\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e64 Bit\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" valign=\"top\"\u003e\u003cstrong\u003eDSP power\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e295 MHz (1.2 billion MAC operations\/second)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" valign=\"top\"\u003e\u003cstrong\u003eSampling rate\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e48 kHz\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" valign=\"top\"\u003e\u003cstrong\u003eDSP type\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eAudio signal processor\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" valign=\"top\"\u003e\u003cstrong\u003eSignal-to-noise ratio digital input\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e105 dB (A-weighted)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" valign=\"top\"\u003e\u003cstrong\u003eSignal-to-noise ration analog input\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e102 dB (A-weighted)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" valign=\"top\"\u003e\u003cstrong\u003eDistortion (THD)\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e\u0026lt; 0.03 % \u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" valign=\"top\"\u003e\u003cstrong\u003eDamping factor\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e100\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" valign=\"top\"\u003e\u003cstrong\u003eOperating voltage\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e10.5 - 16 Volts (max. 5 sec. down to 6 Volts)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" valign=\"top\"\u003e\u003cstrong\u003eIdle current\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e1500 mA\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" valign=\"top\"\u003e\u003cstrong\u003eMax. remote output current\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e500 mA\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" valign=\"top\"\u003e\u003cstrong\u003eOperating temperature range\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e-40° C to +70° C\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" valign=\"top\"\u003e\u003cstrong\u003eFuse\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e2 x 30 A Maxi-fuse (APX)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" valign=\"top\"\u003e\u003cstrong\u003ePower rating\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eDC 12 V ⎓ 45 A max.\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" valign=\"top\"\u003e\u003cstrong\u003eAdditional features\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eADEP.3 circuit, Auto Remote switch, 32 Bit CoProcessor, Control Input\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd align=\"left\" valign=\"top\"\u003e\u003cstrong\u003eDimensions (H x W x D)\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e50 x 230 x 154 mm \/\u003cbr\u003e2.00 x 9.06 x 6.06“\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003cp\u003e\u003cbr\u003e* In typical multi-channel applications (2- \/ 3-way system + rear + subwoofer)\u003c\/p\u003e \u003c\/div\u003e \u003cdiv id=\"supply\" class=\"detail-supply-headline\"\u003e \u003ch3\u003eScope of delivery\u003c\/h3\u003e \u003c\/div\u003e \u003cdiv class=\"detail--supply-content\"\u003e \u003cdiv class=\"product--supply-inner\"\u003e \u003cp\u003e1 x Amplifier HELIX M FOUR DSP\u003cbr\u003e1 x Line Output-to-RCA \/ Cinch cable\u003cbr\u003e1 x USB cable\u003cbr\u003e1 x Mounting material\u003cbr\u003e1 x Instruction manual\u003c\/p\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e","brand":"HELIX","offers":[{"title":"Default Title","offer_id":52761190727946,"sku":"M FOUR DSP","price":429.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0930\/4578\/4842\/files\/helix_m-four-dsp_1.jpg?v=1774293314","url":"https:\/\/audiovisualworld.co.uk\/products\/helix-m-four-dsp-4-channel-amplifier-with-10-channel-dsp-6-channel-highlevel-input-aco-platform","provider":"Audio Visual World","version":"1.0","type":"link"}