AudioQuest Niagara 3000UK Gebruikershandleiding - Pagina 9

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Operation and Continuous Use

Power Switch | Circuit Breaker and LED Power Indicator

Once the AC cords are properly connected to the AC source tap, and the components are connected to the

appropriate outlet banks, it is safe to energize the Niagara 3000UK. On the right-hand side of the Niagara 3000UK's

front panel, there is a black rocker switch. Firmly press the rocker switch so that its upper portion is flush with the

front panel. Typically, within a couple of seconds, you should hear an audible "clack" sound(s) from one or more

relays within the Niagara 3000UK. At the same time, the front-panel LED power indictor will glow blue, signifying

that the unit is operational. (If this does not occur, see the "Trouble-Shooting Guide" in this manual.)

Rear-Panel Power Correction Switch | Niagara 3000UK Current Draw

The default position for this switch should always be "energized" or "1"—even for applications in which there

are no power amplifiers of any kind powered by the Niagara 3000UK. Defaulting to "energized"/"1" serves two

functions: It activates the full Transient Power Correction Circuit for power amplifiers that would be energized

by outlets 1 or 2, and also provides a portion of the Level-X Linear Noise-Dissipation Circuit for outlets 3 through

7. Although no damage to the Niagara or the connected components will occur, performance will be somewhat

compromised when this switch is not set to the "energized"/"1" position.

The "0" setting of the rear-panel switch disengages a portion of the transient power correction circuit. The switch

was created for instances in which there is either extraordinary amounts of harmonic distortion present on the

utility AC power line (creating easily audible acoustic buzzing from the listening position—rare), or there is some

concern about smart-meter power consumption. These potential issues can be immediately alleviated by placing

the rear-panel switch in the "0" position. The Transient Power Correction Circuit creates a reactive current draw of

as much as 4 to 5 amps RMS at idle (real-world draw is a small fraction of an amp), and electrical technicians who

connect a current probe to a product such as this are frequently alarmed: They suspect that the product is either

broken or that it is drawing a distressingly high amount of current from the wall outlet (akin to a power amplifier

left in full operational mode).

This is actually far from the truth. If the Niagara 3000UK was consuming that much current (or even 30% of that

level), it would need to dissipate the energy loss in heat. It would be quite warm (even hot) to the touch, just like

most power amplifiers while in operation. In fact, the Niagara 3000UK runs cool, precisely because this current

reading is false. The circuit utilizes massive capacitive reactance across the AC line, which, akin to a battery, will

both absorb and immediately release the current several times per second. Further, when incorporated with

power supplies such as those found in power amplifiers, the current readings actually come down. This is due to

what's known as a vector load, and it's quite dynamic in an audio/video system. In this scenario, there is one thing

that can run somewhat warmer than it might otherwise: the AC cord that supplies power to the Niagara 3000UK.

This is because the wiring and the circuit breaker that supply power to Niagara 3000UK simply look at RMS current

and do not distinguish between reactive loads, resistive loads, or inductive loads, but your utility does.

This circuit and many like it have been utilized for many years, and, when tested into buildings with absolutely

no loads present aside from the transient power correction circuit, there was virtually zero power draw from the

utilities' power meter. Still, in an age where so-called "smart meters" are omnipresent, and some utilities may or

may not change their standards for "what type of power or current is suitable for billing, " we have gone to great

lengths to offer an alternative to those who may be concerned, but who nevertheless wish to achieve the best

possible audio/video performance.