The cable range in 2020. The best cable is not the one that gets the most out of a system, but the one that loses the least of the original signal. Audio cables act as antennae and attract external interference signals, for example from smartphones. These physical phenomena that occur when transmitting signals, instance, crackling from loudspeakers when a smartphone is searching for a network can only be minimised with technical finesse and finest materials.
Please find below some of the terms used –
BANDWIDTH The range in 2020
Bandwidth is the frequency scope of transmission. The bandwidth of a typical audio signal ranges from 20Hz to 20 kHz. A narrower bandwidth transmits fewer frequencies. A telephone typically transmits around 300 Hz to 3 kHz, and a larger one will carry more. DVB-S (satellite) systems currently use bandwidths of more than 2 GHz
IMPEDANCE (75 OHMS/110 OHMS) The range in 2020
The wave resistance, or impedance, is a crucial prominent figure for cables, calculated from the ratio of inductivity to capacity.
CAPACITANCE The range in 2020
Capacitance is the measure of the capacity to store electrical charges. However, cables should be able to transmit 100% of the signal without temporarily storing it. The less capacitance a cable has, the better.
INDUCTIVITY The range in 2020
Each conductor passing information forms a magnetic field around it. If the flow of current changes, the strength of the magnetic field also changes. And, results in an inductive current which counteracts the replacement of current in the conductor. A frequency-dependent resistance develops (also called inductive resistance) which harms the transmission. Exclusive designs reduce the inductivity of a cable.
CONSUMER ELECTRONICS CONTROL
CEC enables several devices, such as a TV or DVD player, operated with only one remote control. Several devices from any manufacturer can be controlled, provided all the connected components are CEC compatible.
The conductors are covered in a non-conductive material to protect against short circuits, corrosion and damage. However, because these materials store energy (capacitance), which is undesirable in audio and video cables.
The cross-section is the size of the conductor surface in a cable and measured in square millimetres. The larger the cross-section, the lower the losses. It should not be confused with the diameter.
JITTER The range in 2020
When serially transmitting A/V data, cable properties affect these impulse durations so that data is not received correctly. In the case of pronounced jitters, the D/A converter has to correct the error frequently, and consequently, the quality of playback for pictures and sound suffers.
DAMPING The range in 2020
The weakening of a signal transferred in a cable is called damping and specified in dB (decibels). I.e. it is a measure of signal loss. The damping of an audio cable depends on the frequency. This specification is essential for planning antenna cables for antenna systems. It should not be confused with the shielding dimension and specified in dB.
The transmission of picture and sound signals is highly complex and susceptible to interference. Any contamination in the conductor material prevents the flow of current, impairing the conductance and increasing the background noise. Therefore, we only use especially pure-grade, oxygen-free copper (OFC) with high conductance.
The data rate specifies how many data units (bits) are transferring per second. The maximum data rate with an HDMI 2.0 interface is up to 18 Gbps. That is 18 billion bits or 2.25 billion characters per second (8 bits = 1 byte).
PE is a high-quality insulating material (dielectric) which is ideal as an insulator. It reduces the capacitance of a cable by a factor of two compared with PVC (polyvinylchloride). The electrical loss of PE is also low.
EXTENDED DISPLAY IDENTIFICATION DATA (EDID)
With the EDID function, the display (e.g. LCD monitor) transmits information via the HDMI cable to the source (e.g. DVD player) as to which resolution formats it supports. The source, in turn, sends back the highest suitable format.
Each of our cables complies with the RoHS directive. RoHS (Restriction Of Hazardous Substances) is an EU directive (2002/95/EG) with the aim to reduce substances damaging to health and the environment in electronic devices.
Many individual wires are twisted into a braid to make the cable more flexible. The sum of the individual wires makes the total Cross-section. The thinner the wires, the more flexible the cable.
To protect against electromagnetic interference cables are shielded with one or more layers (e.g. a wire braid or an aluminium coated Mylar film). The impact of the screening is measured in dB and describes the reduction of any interference.
Full-HD or 1080p has established itself as the term for the maximum HDTV resolution of 1920×1080 pixels. Full HD enables the use of larger screens or far better picture quality with the same screen size.
High frequencies are mainly transmitting on the surface of the conductor (skin effect). As silver is the best conductor, the high rates are transmitted better via silver-plated conductors. On audio and speaker cables silver-plated cables boost the high-frequency range. On HDMI connections the silver-plated conductors also ensure optimum signal transfer even on long audio cables.
The 24-carat gold-plated plug contacts considerably reduce contact resistance and transfer signals optimally. The quality of the connection shows in the contact resistance. Poor connections have high contact resistance and cause signal losses. Special surface treatment such as gold-plating contact surfaces considerably reduce resistance, improve the connections and therefore, the sound and picture quality.
On standard cables, the many fine wires are bundled, meaning the electrons can “jump “from one wire to another. The signals travel for different lengths of time, and fast impulses are “braked”. Solid conductors prevent this by providing the same transit times and precise, sharp contours. Solid conductors also offer another benefit for digital and video quality: The smooth surface allows the impedance to be precisely adjusted and the high signal frequencies which mainly move on the surface of the conductor can be transmitted correctly.
HDTV stands for high definition television. All-new TV and video formats belong to the HDTV family. The assignment of the HDTV resolutions is simple and clear: The resolution in video lines gives the names to the American HDTV formats 720p (p = progressive, i.e. 720 full lines per picture) and 1,080i (i = interlaced, i.e. 2 x 540 line half-pictures). In addition, a horizontal resolution that matches the vertical resolution was selected that forms the picture format factor in the following simple manner: 720 x 16:9 = 1,280 and 1,080 x 16:9 = 1,920 horizontal pixels.
Loudspeaker cables with the wires arranged in the same direction tend to get twisted. And, makes laying the cable and installation difficult. Cables with S/Z stranding have wires with opposite stranding to avoid this effect.
DIGITAL CONTENT PROTECTION
As the HDMI interface sound and picture content is available in absolutely perfect resolution, the film and software industry have instructed that data is released only as copy-proof. This is the reason for using HDCP.
With symmetrically designed cables, two identical wires are used for the initial and return conductors. And, counteracts the level of electromagnetic interference and provides exceptionally high immunity to interference. Also, separate shielding protects the signal.
UHQCD stands for Ultimate High-Quality Compact Disc and is a development of the Japanese CD replication company Memory-Tech and the Audio Quality CD Company from Hong Kong. Unlike conventional CDs, UHQCDs are not pressed from polycarbonate but cast from a photopolymer and cured with UV light. The combination results in a significantly reduced reflection of the laser light inside the CD and an unmatched precise edge transitions between pits and lands of the CD. UHQCDs are 100% compatible with regular CD players. Musically, there is a sound image reminiscent of analogue master tapes
Ultra high definition TV abbreviated to Ultra HD or UHD. An ultra-high-resolution, digital video format introduced in 2013 that incorporates two resolutions (4K and 8K). In Japan, the 8K is super hi-vision (SHV). The UHD standard introduced in Europe in 2013 has a calculated pixel resolution of 3,840 x 2,160 pixels (4k) and is also known as UHD 2160p.
The complete range
Perkune audiophile cables are pleased to announce the cables for 2020. And, entering the fourth year of business, are adding new ideas and techniques. Many days spent travelling and visiting people with different systems for listening and evaluation purposes.
For your convenience, I have divided the cables into nine sections. Starting with the latest cables and working down. Cables are made with the same care and attention to detail because I want you the customer to be 100% satisfied with your cables in every way!
For your convenience, I have divided the cables into nine sections. Starting with the latest cables and working down. Every cable is made with the same care and full attention to detail is given. Because I want you the customer to be 100% satisfied with your cable in every way!
- AirDream 2
- Bi-wire /Triwire
When it comes to operations, the biggest step forward has been the development and introduction of the ‘AirGap’ isolation and ‘AirTube’ suspension. These two items help reduce vibrations, reflections and unwanted noises caused by electrical interference. Making a big impact on the sound heard at the loudspeakers.
Noise is an enemy to audio. And, the natural step was the introduction of Aluminum foil sheathing and Vinyl tape insulation. Aluminium foils provide better sound insulation and help to eliminate unwanted noise sources. The Aluminum foils ability to absorb sound allows unwanted noise to be picked up directly at the source and prevents further propagation. Aluminium foil offers 85% effective as a noise insulator.
Next Generation The range in 2019
The next generation XLR connections used, are made in Japan and offer anti-vibration and anti-reflection properties. Plugs are 24k gold plated male/female pins and the technology of construction used minimises static and external interference. A Balanced interconnect is known for having superior signal transmission and is always the preferred method.
The power plugs and IEC connections made from unique materials have anti-static and anti-vibration properties. When used correctly bring out more solidarity and depth to the musical presentation. The sound-stage is improved, and the music shows speed and excitement!
One thing that is very important to understand is that people hear sound differently. And, there are many factors to take into account. A person’s general health, consumption of drugs and alcohol. Ear health as a result of accident or noise damage. Also, as a general rule of thumb, a person hearing ability declines with age!
It is essential when a new cable is produced; it is tested and evaluated. The first testing is carried out by myself. Second testing by a music producer and sound expert in Lithuania. The final testing carried by a music expert in the United Kingdom. After all, results compared, and everyone is satisfied the cable is released and made available for sale.
Special cables The range in 2019
People often request things out of the ordinary, but I aim to please, and I love to work ‘outside the box’. Nothing is too big, and nothing is too small, so have added the exclusive range of cables for your pleasure.
To say I have an obsession would be an understatement. Over the years, I have tested hundreds of cables produced by leading cable companies. Also, I have performed ‘side by side’, test and carried out cable comparisons. I know how a suitable cable should sound and how a suitable cable should sound. And I know how to make your audio system sound better!
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