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Setting Up: Chapter 1
QuadraSynth Plus Piano Reference Manual 10
tester to determine this. If the outlet is not grounded, consult with a licensed
electrician.
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Do not operate any electrical equipment with ungrounded outlets. Plugging the
QuadraSynth Plus into an ungrounded outlet, or “lifting” the unit off ground with a
three-to-two wire adapter, can create a hazardous condition.
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Alesis cannot be responsible for problems caused by using the QuadraSynth Plus or any
associated equipment with improper AC wiring.
Line Conditioners and Protectors
Although the QuadraSynth Plus is designed to tolerate typical voltage
variations, in today’s world the voltage coming from the AC line may
contain spikes or transients that can possibly stress your gear and, over
time, cause a failure. There are three main ways to protect against this,
listed in ascending order of cost and complexity:
• Line spike/surge protectors. Relatively inexpensive, these are
designed to protect against strong surges and spikes, acting somewhat
like fuses in that they need to be replaced if they’ve been hit by an
extremely strong spike.
• Line filters. These generally combine spike/surge protection
with filters that remove some line noise (dimmer hash, transients from
other appliances, etc.).
• Uninterruptible power supply (UPS). This is the most
sophisticated option. A UPS provides power even if the AC power line
fails completely. Intended for computer applications, a UPS allows you
to complete an orderly shutdown of a computer system in the event of a
power outage, and the isolation it provides from the power line
minimizes all forms of interference—spikes, noise, etc.