V5 CORVUS
V5 Corvus is an evolution of IsoTek’s award winning Polaris design, reconfigured to feature nine output sockets. It is a cost effective upgrade to any audio or audio-visual system, delivering improved performance and protection as well as being great value for money. Corvus can be easily wall mounted behind your audio system.
FEATURES
- Suitable for all audio or AV systems
- RFI reduction 35dB
- Central clean power network removes Common and Differential Mode mains noise
- 9 independent outlets stop Differential Mode cross contamination
- 45’000A instantaneous protection
- Fully star-earthed network
- Multi-strand 6n OFC silver-plated internal wiring with FEP dielectric
- System Link outlet for extending the outlets and maintaining a starred earth reference
- Use with standard IEC C13/C15 power cable
- UK, EU, US, AU & CH outlets available
Differential Mode mains noise is created by all electrical appliances – everything with a power supply, in fact. This includes your microwave oven, your television and your computer, as well as every hi-fi component you own.
Common Mode mains noise is often referred to as RFI – transmitted frequencies that surround us but we cannot see. For example, imagine how much data is transmitted by smartphones and tablets; cheap power cables act as aerials (antennas) for these unwanted frequencies.
IsoTek’s power cleaning circuits are designed to reduce impedance whilst remaining safe as well as correcting well into the audio frequency bands. This is not only a judgment from sound electrical engineering, but it also follows the codes of electrical safety, which are independently assessed.
Each socket connects directly back to the PCB and is serviced by IsoTek’s unique power cleaning technologies.
Internal wiring also uses high purity coppers combined with silver plating, with either Fluorinated Ethylene Propylene (FEP) dielectric or IsoTek’s Virtual Dielectric of Air (VDA), where a FEP tube is wound around the conductor before an extruded FEP dielectric protects this construction giving unrivalled performance and the ultimate low resistance, high performance internal power delivery system.
The protection circuit has two primary functions, one to preserve itself and the second to step in gradually as any problem increases, with the ability to act very fast should an extreme condition occur. The protection circuits also protect the filters and the filters assist the protection in the initial stage. Unlike many protection devices these assist sound quality as well as providing protection. Studies suggest this problem is not subtle and is frequent. The disturbing challenge is the 1’000 to 6’000V range. It is likely most protection systems do very little good and probably cause sound degradation.
The guiding principles for IsoTek circuits are driven by Kirchhoff’s two current laws, a simple analogy would be that for every litre of water placed into a water distribution system we would expect to get the same out.
To put it another way, Kirchhoff and Gauss described how seemingly impossible problems could be resolved by the concept of a town. If traffic flows on a circular orbital road around the town there is no effect on the town. However, if traffic enters the town, then there will be an effect on the town, and however many cars that enter eventually have to leave. The structure of that town will have either a positive or negative effect on that migration. In electronics this is also true. We must totally respect the signal path as, whether one wishes it or not, ultimately everything will be in the signal path to a greater or lesser degree.
IsoTek’s internal wiring synergizes with the range of IsoTek power cables. One critical but overlooked area is maintaining commonality of design and material properties though an audio wiring loom, be it signal carrying cables or your power cable network.
It is impossible to get more than 100% out of the mains supply. The very principle of AC power is that it doesn’t store energy in the transmission system. It is therefore impossible to store energy in an AC system by the very principles by which it works. There can be no so-called power reserve, thus a power reserve within an AC circuit in the truest sense of the word does not and cannot exist.
Power reserve would require the voltage to increase as ohms law insists it must, saying a circuit doesn’t sag isn’t a reserve of power. The AC waveform goes between maximum and minimum points at 50 Hz in 10 mS, it then swings to the maximum negative value. At 20 mS a full cycle is achieved. Therefore, in fact the average values of an AC waveform is zero. Only as a power wave can it be positive, this is due to the law of squared negatives. It looks like a ballooned sine wave where the value of 45 degrees is 0.5 not 0.7071 from a trigonometric table. Were this only a voltage wave it would have a long-term value of zero! As far as energy storage is concerned zero is the value of stored energy.
Direct Current resistance (DCR) will cause sag. To put it in other words, a system has to be developed which does not limit the power reserve of the power station, meaning a circuit needs to have extremely low resistance whilst maintaining sufficiently high inductance. When done correctly and in perfect balance the inductance is virtually zero at 50/60 Hz and the Direct Current resistance (DCR) is also very close to zero. Therefore, an ideal filter circuit must maintain zero Ohms resistance DC (or very close) and considerable AC resistance to noise above 50/60 Hz. Despite statements to the contrary, this is precisely where correctly specified materials matter most. Whilst some might consider these ‘exotic’ they represent a critical and important part of the function and appropriate to use. Remarkably IsoTek filter designs can maintain very low resistance at 50/60Hz but have very high amounts of noise cancellation above that frequency.
Most AC circuits are reactive – produce a reaction either from the power drawn or the circuit itself, put simply they are not pure resistors and behave like a capacitance and resistance or an inductance and resistance. In an ideal world the only allowable impediment is resistance and ideally this needs to be extremely low. A dilemma, do you want high transient power, or do you want heavy filtration – amazingly you can have both, but one must have components of the very highest quality, which are designed specifically for purpose with totally correct architecture. This is extremely complex and has resulted in the design of specialist parts; these do not exist outside the world of specialist power engineering and are unique to IsoTek designs.
This is particularly useful for joining multiple units together using our System Link cable available in EVO3 Initium, EVO3 Premier, EVO3 Sequel and EVO3 Optimum quality.
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DESIGN
The V5 Corvus is a compact power cleaning and distribution bar measuring just 380mm in length, 170mm wide and 50mm in height. It features nine individual outlets; these reference back to the central internal PCB. Most power filters of this style join outlet sockets together, running each in series connection. This is an error of judgement as Differential Mode Noise, created by the connected load (your audio components) will cross-contaminate between the outlet sockets. The electrical architecture and design of the V5 Corvus prevents this and is therefore superior.
The V5 Corvus features a unique delta filter topology, ten times greater than the recommended standard, this offers more than 20dB power cleaning at 1kHz (reference 600Ohms), this is then improved to 42dB at 10kHz. Most leading experts agree that 10kHz is where radio frequency interference (RFI) starts to influence performance. This is also linked to an amplifiers ability to reject power supply noise. This electrical engineering ensures class- leading power cleaning performance for both Common Mode (RFI) and Differential Mode mains noise. The printed circuit board (PCB) itself also has twice the standard copper loading and is silver-plated.
This unique circuit delivers clean power to its nine outlet sockets – each one independently isolated to prevent cross-contamination of Differential Mode mains noise. This is combined with IsoTek’s KERP © (Kirchhoff’s Equal Resistance Path) to ensure equal resistance and equal power delivery to all outlets. The internal wiring is of the highest standard, a unique 2sqmm design featuring pure 6n oxygen free copper conductor strands each silver-plated, these offer low resistance and high amperage. An aerospace grade Fluorinated Ethylene Propylene (FEP) dielectric, with very low dielectric resistance is used to protect the conductors as well as giving an ideal conductor contact dielectric for the internal power delivery system.
Furthermore, in the new V5 version instantaneous protection is increased to 45’000A, this not only protects the circuit but also safeguards your valuable connected equipment via IsoTek’s unique sequential and repeatable protection system.
V5 Corvus also contains a System Link outlet, this is designed to connect multiple units together, whilst maintaining a star earth reference, and preserving the need for multiple wall outlet sockets.
A wall hanging bracket system is also included, this allows easy mounting of the product behind your audio equipment rack, if desired.
The internal wiring of IsoTek products synergises with the range of IsoTek power cables. One critical but overlooked area within audio is maintaining commonality of design and material properties through an audio wiring loom, be it a signal carrying cable or a power cable network. IsoTek’s award winning Initium power cable is also included.
