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FEATURE DETAILS
Sequential Startup/Shutdown:
Complex audio/video systems may be susceptible
to voltage transients generated internally at start-
up/shutdown if all of the equipment is powered on
or off at the same time. This can cause speaker
"thumps" which are not only annoying but can also
damage the speakers. The MAX 5510-Pro is
designed to eliminate these transients by providing
a "start-up" delay for the High Current outlets and a
"shutdown" delay for the switched Isolation
Transformer Outlets. This allows the components
plugged into the switched outlets to power-up and
stabilize before any amplifiers and powered sub-
woofers are turned on. This sequence is reversed
during shutdown. The amplifiers and powered sub-
woofers turn off, their power supplies drain, and then
the equipment plugged into the switched outlets is
turned off.
Information on setting the delay times is included in
the Isolated/Switched Outlets and High Current
Outlets sections that follow.
High-Current Outlet Bank:
The two high-current outlets allow amplifiers and
HIGH CURRENT OUTLETS
ISOLATED OUTLETS
MAIN BREAKER
powered subwoofers to work to their full potential.
GROUND
When the movie thunders with a terrific explosion or
when the music reaches a climactic crescendo, an
amplifier has to rapidly draw large amounts of cur-
IEC 320 C13 120V/15A
rent to replenish its capacitors. Traditional line con-
ditioners impede this current draw, in effect, starving
an amplifier and resulting in a flat, dead sound. The
High-Current Outlet Bank provides clean, filtered
power to amplifiers but has no current limiting
components to impede performance.
The high current outlets are designed with a turn-on
delay option of 0 or 10 seconds. The 2-position,
HC Outlet Delay switch on the back of the MAX
5510-Pro is used to select the desired time delay.
When a delay is selected, the high-current outlets
will turn-on after the Isolated/switched outlets and
turn-off before the Isolated/switched outlets (if they're
not set to always-on). With a delay, the connected
equipment will not power up simultaneously, thus
preventing loudspeaker noises such as "thumping".
6
(continued)
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Isolated/Switched Outlet Bank:
HIGH CURRENT OUTLETS
ISOLATED OUTLETS
MAIN BREAKER
Four outlets (one bank of four) are fed power through
the heart of the MAX 5510-Pro, the Isolation
GROUND
Transformer. These outlets should be used for digital
components such as DVD players or display devices
IEC 320 C13 120V/15A
like Plasma TVs or DLP projectors.
Pure, clean power is obtained by using the isolation
transformer to regenerate the AC current. The power
from a typical wall outlet is contaminated with elec-
tromagnetic (EMI) and radio frequency (RFI) interfer-
ence (noise) picked up by the power lines between
the power utility's generating plant and the wall out-
let. This contaminated power feeds the isolation
transformer's primary windings and is regenerated
(through electromagnetic induction) as clean power
on the isolated secondary windings. The outlets are
connected to the secondary windings, which have no
physical connection to the primary windings. This is
True Isolation! Not only will it isolate your digital
source equipment from contaminated power, but also
prevent any noise generated in the digital compo-
nents from flowing back to other connected equip-
ment.
A 2-position slide switch (Switched Outlets
OUTLETS
ISOLATED OUTLETS BREAKER
Delay) located on the rear panel controls the timing
LINE LEVEL AUDIO / VIDEO
OUT
OUT
OUT
OUT
OUT
for the Isolation Transformer Outlets. Together, these
USB
I
LED
LIGHT
RS232 CONTROL
outlets can be set as "always-on" or with a turn-off
IN
IN
IN
IN
IN
I
R
G
B
H
V
12V TRIGGER
LAN / TELCO
delay of 10 seconds to prevent speaker "thump".
IN
OUT
SWITCHED
HC
TRIGGER
TRIGGER
OUTLETS
OUTLETS
ENABLE
DELAY-ON
DELAY
DELAY
IN
This switch provides the option of having a total of
eight always-on outlets (4 Filtered Outlets and 4
Isolation Transformer Outlets).
When set to the 10 second delay position, the
Isolation Transformer Outlets will remain as Switched
outlets, controlled by the Power pushbutton and/or
the DC Voltage Sense Trigger. In this situation, the
Isolation Transformer Outlets will not power down
until after the selected time delay has elapsed.
Two different power modes, Isolated and Balanced,
are available as output from the isolation transformer.
These are selected with the front panel AC
Regeneration pushbutton. In the Isolated mode,
the secondary (load side) of the transformer's wind-
ing is completely isolated from ground connections.
Digital source components (with 2-blade power
plugs) that are plugged into these outlets are also
isolated, eliminating ground loops and hum.
In the Balanced mode, a center tap wire from the sec-
ondary winding is connected to ground. This creates
a balanced voltage waveform (+60V Line-Ground & -
60V Neutral-Ground, 180 degrees out of phase),
which still provides 120VAC to your equipment but
has the benefit of canceling any common mode noise
between Line/Neutral and Ground.
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