Maple Audio Works Technology Overview

We build our cables with negating interference in mind, as well as using the best quality conductors available. When transporting over any electrical medium, interference and leakage are major factors. The conductor’s own resistance is a means of leakage, so the quality of the conductor is of utmost importance. Interferences are the plague of most audio systems. The main kinds of interferences we encounter are electromagnetic interference, radio frequency interference, electrostatic discharge and mechanical interferences.

Electromagnetic interference is defined as any electromagnetic disturbance that interrupts, obstructs, or otherwise degrades or limits the effective performance of electronics or electrical equipment. Basically every electronic device you own causes interference, of course some greater than others and the closer you have such devices in relation to your audio system the greater the amount of interference is generated. Radio frequency interference is caused by electromagnetic radiation, which is emitted by circuits carrying rapidly changing signals. The most common way to getting rid of this kind of interference is through the use of bypass or de-coupling capacitors, which in a transport medium comes down to filtering, which does not make sense in audio cables. When we begin to filter the signal we begin to lose parts of the signal we want to keep. The only application where this does make sense is in the power source or power supply, thus power cable design can greatly benefit from filtering because you want only clean power and nothing else.

Electrostatic discharges are everywhere, especially in a carpeted room. Static is something that is just part of existing in our atmosphere. Charged particles just releasing their energy where ever they want. Of course safeguards can be put in place to help prevent static from affecting your audio system and the cables, which connect the components. In the case of interferences shielding cancels or protects from most of them. Of course each type of interference is influenced more greatly by different materials with different qualities.

Finally we look at mechanical interference. What is it? Simply anything that moves causes mechanical interference or vibration, even the sound you are generating with your audio system is a form of interference that affects the end result. For this reason we can see why isolation cones and weight loaded devices really do work. Mechanical interferences can have the same effect on cables as they do on individual components, reflecting from, or absorbing mechanical interferences becomes more important as the true realization of what they can do to your system.

Please note that our cables do not act as filters, we are simply allowing the frequencies to travel unobstructed to an intended path or source. As soon as you start to filter the frequencies information is lost. If anything, we are promoting a more complete means of transportation for the signal. The frequencies are arriving fully intact at their intended destination.

One of the most overlooked internal interferences that we encounter is crosstalk. Frequencies can affect other frequencies. Analogue signals are composed of multiple frequencies sharing the same medium, thus allowing ample bandwidth is extremely important. The importance of a Litz configuration is important in the construction of a loudspeaker cable in particular because we are allowing the various frequencies to travel less restricted with similar frequencies. We don’t want to force a signal to move through an inadequate medium, which doesn’t allow the signal to breathe. I like to think of this as “frequency crowding”, when this happens all of the nuances and dimension of the music are lost by the time it reaches our ears. Sends and returns in both loudspeaker cables and interconnect must be safeguarded against each other. The closer they are to each other the more shielding becomes important.

Maple Audio – Frequency selective audio cables. Does bi-wiring and tri-wiring make a noticeable difference? The answer is definitely yes, especially if you know how to build bi-wired and tri-wired cables correctly. When we build a bi-wired or tri- wired set of loudspeaker cables we are not simply putting two identical sets of cabling together. We are custom building the cables to address specific frequencies. Audio frequencies are very selective of the medium in which they decide to travel if alternate paths are available. We build our cables completely different to address high frequencies versus low frequencies.

Why does this happen? Different frequencies travel at different skin depths; lower frequencies tend to travel towards the core of the conductor, whereas the higher frequencies travel closer to the outside of the conductor. For this reason higher frequencies prefer many small conductors with lots of surface area as opposed to lower frequencies preferring only a few larger conductors.