Specification

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High-performance systems
begin (and end) with power.
High‑end AV systems depend on reliable, available power just as any computer system or network
does. Poorpower can have a noticeable impact on sound and video quality. Component power
supplies and electrical circuits can be stressed or even destroyed outright. Power outages can result
in the loss of system presets and missed DVR recordings.
And thegrowing presence of hard drives and network connectivity makes AVsystems even more
susceptible to damage or compromised performanceas the result of power disturbances.
Several types of power anomalies can negatively aect your AV experience
Power anomaly
Oscillatory transient
(sometimes referred
toasa “surge”)
Very short (1 – 3cycles)
increase distortion of
voltage waveform
Impulse transient
(aka“spike”)
Dramatic and
instantaneous
increasein voltage
Noise interference
Electromagnetic
and radio frequency
interference (EMI/RFI)
” S A G / S W E L L”
(aka“brownout”
and“surge”)
Sustainedlow or high
RMS voltage levels
Blackout
RMSvoltage goesto“0”
Voltage distortion
RMS voltage waveform
is distorted
Typical cause
of disturbance
Grid overload,
utility switching,
starting/stopping
of largehousehold
appliances
Lightning Generated by
appliances, HAM
radios, nearby radio
stations, and even AV
equipment itself
Too much demand
on electric utility;
running of larger
householdappliances
Overloaded utility
network; storm activity;
downed power lines;
animal infestation
Powering household
appliances
andpower tools
Eect on
audio quality
N/A None If severe enough, can
cause an audible hum or
buzzing sound
If severe enough, may
limit dynamic range of
sound produced by the
amplier; not enough
current is available
during peak periods
N/A Possibly degrades
sound quality
Eect on
video quality
N/A None Visible lines of distortion
(“hum bar” distortion)
possible
If severe enough, may
create visible lines
of distortion
Could damage or
reduce life span of
projector bulbs
May result in visible lines
of distortion
Eect on
components
Stresses power
supplies and/or causes
premature failure
Catastrophic failure N/A Stresses power supplies
by forcing larger current
draws; may result in
premature failure due to
increased stress
Entertainment
becomes unavailable
or is interrupted; DVR
recordings are lost or
missed; presets are
lost; hard drives may
be damaged or data
lost; security and home
automation systems
become inoperable
Stresses power supplies
APC solutions
C Type, G Type, H Type,
S Type
C Type, G Type, HType,
S Type
C Type, G Type, HType,
S Type
H Type, S Type S Type S Type