Ac Power Hookup; Line Conditioners And Protectors; About Audio Cables - Alesis DM Pro Reference Manual

AC P H
OWER
The DM Pro comes with a power adapter suitable for the voltage of the country to
which it is shipped (either 110 or 220V, 50 or 60 Hz). With the DM Pro off, plug the
DIN connector of the power adapter cord into the DM Pro's [POWER] socket and the
male (plug) end into a source of AC power. It's good practice to not turn the DM Pro
on until all other cables are hooked up.
L C
INE ONDITIONERS AND
Although the DM Pro 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,
A A
BOUT UDIO
The connections between the DM Pro and your studio are your music's lifeline, so
use only high quality cables. These should be low-capacitance shielded cables with a
stranded (not solid) internal conductor and a low-resistance shield. Although quality
cables cost more, they do make a difference. Route cables to the DM Pro correctly by
observing the following precautions:
• Do not bundle audio cables with AC power cords.
• Avoid running audio cables near sources of electromagnetic interference such as
transformers, monitors, computers, etc.
• Do not place cables where they can be stepped on. Stepping on a cable may not
cause immediate damage, but it can compress the insulation between the center
conductor and shield (degrading performance) or reduce the cable's reliability.
• Avoid twisting the cable or having it make sharp, right angle turns.
• Never unplug a cable by pulling on the wire itself. Always unplug by firmly
grasping the body of the plug and pulling directly outward.
• Although Alesis does not endorse any specific product, chemicals such as Tweek
and Cramolin, when applied to electrical connectors, are claimed to improve the
electrical contact between connectors.
DM P R M
RO EFERENCE
OOKUP
Note that Alesis cannot be responsible for problems caused by using
the DM Pro or any associated equipment with improper AC wiring.
C
ABLES
ANUAL
Welcome to the DM Pro
P
ROTECTORS
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