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Optimization - Polarity checker

We must try to find the right orientation of the plug of each component of your system: this usally has a huge impact on the musicality.

In France, the current is 50Hz, varying between 210 and 240 volts. Two lines are used, the third one is the Ground. One of these two links is called the « phase » in France (usually the Line in English, marked  « L » on most connectors) with a sinusoidal current, the second one is neutral (usually marked « N » on most connectors) which helps the current to flow back after having passed through the device.

If all your components are connected with the roght plug orientation, the musical quality is better, often far better ...

How to find the phase ?

Some manufacturers put a red point on the plug ,but not all. In additon, the internal cabling of a device may not match the ISO rules, so the only sure method to identify the roght orientation is... to lesson to your device with a given plug orientation and then to invert the plug in order to chose the position that gives the best sonic results.

A few tools may help you (although none is as good as your ears): a Shuko plug that you can invert or a very simple adapter to permute the plug orientation, and a special screewdriver designed for the polarity checking. If you don't have a screewdriver take a voltmeter on alternatif volts (V~).

You must first remove all the cables between the various components of your system, and then put them on only after. Some of you guys will perform this check using their ears, and therefore no screewdriver will be used and it is obviously the best approach.

In most cases, the improvement can be eared very easily.

If you used a screewdriver, see where the led blink (it's the phase), the right sense is where the led is flashing very low  (steel frame of the component)

With a voltmeter, take the metal part of your component and again where the volts is the lowest measured on the screen.

Another approach can also be used but requires your fingers !. But this one is to dangerous, so no way....

Article writen by
Florent ("provence13").

Creation date : 29/02/2008 @ 11:48
Last update : 08/11/2014 @ 17:48
Category : Optimization
Page read 715 times

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