Power Supply Assembly


In audio electronics, especially with power amplifiers, the importance of a true low-impedance, wide-frequency power supply is generally underrated. Here every mOhm (one thousand's of one Ohm) counts.

The connection between the large electrolytic capacitors (which also acts as the central ground for the amplifier's circuitry) is made with a massive bar of specially coated high-purity copper.

Instead of standard flat washers, specially corrugated washers are used: these dig deep into the copper and guarantee an even lower contact resistance.

Such details, of which there are many hundreds, are what make the difference between an FM ACOUSTICS and other equipment.
A component of major importance are electrolytic capacitors. It is widely believed that it is the capacitance value that describes a capacitors' capability. This is not correct.

More important than capacitance per se are the loss factor, the Electric Series Resistance (ESR), the maximum ripple current that the capacitor can handle and other less known details, e.g. how the internal aluminium foil is connected to the terminals (the usual way this is done, crimping, results in considerable contact and wire resistance, which degrades the capacitor's peak and continuous current capability and increases heat and ESR).

FM ACOUSTICS uses proprietary technology in its high-grade capacitors, many of which are specially manufactured to FM ACOUSTICS' specifications. This results in a lower ESR and a much higher ripple current capability than found in standard capacitors. The capacitor's size can thus be minimized accordingly and the loss factors are much reduced (lower temperature = longer lifetime).