YORKVILLE AP 6040 Professional Series, Руководство пользователя

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Cooling
The fan draws air in from the front and expels hot air
through the rear vents. This is compatible with most
installations. Since hot air rises, the heated air forc-
ibly expelled from the back tends to rise away from
the equipment rack. This draws cool air from the floor
upwards into the front of the rack. In some cases where
the rear of the rack is obstructed, it may be necessary to
install rack fans to aid cooling. If there are no obstruc-
tions, no secondary cooling is required.
Clip LEDs
The CLIP LEDS on the front panel will visibly indicate
any signal excursion beyond the dynamic headroom of
the amplifier.
Reliability
The AP6040 is designed and manufactured by Yorkville
Sound. Each unit undergoes a thorough, temperature
cycled burn-in period, and each circuit is tested by both
manual and sophisticated computer controlled equip-
ment which is capable of identifying any deviation from
the design center parameters. The design of the AP6040 is
conservative with respect to the power handling capabili-
ties of the output devices. The topology guarantees that
thermal stress not secondary breakdown will set the limits
of operation, while the computer optimized heat dissipa-
tion system insures that excessive thermal stress will not
occur. Yorkville’s reputation as a manufacturer of reliable
equipment will be further enhanced by the AP6040.
The AP6040 is not only suitable for use in both heavy
duty touring sound reinforcement systems but also when
high headroom and low distortion are needed to fully repro-
duce the dynamic range and clarity of today’s CD record-
ings. It is built to survive grueling road conditions and con-
stant 4 Ohm operation. Its reliability in a fixed installation
running 4 or 8 ohm studio monitors is without parallel.
Fan Filter Maintenance
The AP6040 is factory equipped with fan filters mounted
on the air-intake grills located on the amplifier’s front
panel. Regular cleaning of these filters will increase the
amplifier’s long term reliability. The filters should be
removed and washed at the first sign of visible clogging.
This will typically occur every four to six weeks depend-
ing on use and environment. Replacement filters are
inexpensive and can be ordered through Yorkville dealers.
The foam filters should be removed if a regular inspec-
tion schedule is not going to be followed. The amplifier
can operate without the filters in place, but the amplifier
should be cleaned internally by a qualified service tech-
nician when dust is visible on the heatsink fins.
Note: In an unusually dusty location, without regular filter
inspections, removing the foam filter can extend the oper-
ating time before thermal shutdown could occur. At that
time, the internal heatsinks should be cleaned thoroughly.
Output Connections
WARNING: When driven to full power, there is more than
100Vrms appearing between the binding posts. This rep-
resents a significant shock hazard and due care should be
taken when making any speaker connections. Ensure that
no strands of bare conductor are exposed after inserting
the speaker wire into the hole in the side of the binding
post terminals.
The AP6040 has 5–way binding posts and Neutrik four
contact Speakon™ connectors for output speaker connec-
tions. Connection to the binding posts can either be made
with a banana plug inserted into the end of the post or by
wires wrapped around the threads and tightened.
There are two Speakon™ connectors, one for each channel
output. All connectors are connected to the amplifier’s outputs
whether the amplifier is in stereo or mono modes. Connection
configurations are labeled on the back panel. Each Speakon™
output connector (output A and output B) are wired in parallel
with it’s respective binding po
st.
Note: Do not operate in Bridge Mode and Do Not
Ground Output Terminals!
Fan Filter Maintenance