powersoft Quattrocanali Series User Manual

English
Installation
3
3 : 1.Location
Quattrocanali Series ampliers are meant to be installed into
rack cabinets. In order to limit the risk of mechanical damages,
the ampliers must be secured to the rack using both frontal
and rear mounting brackets. We recommend to use eight M6 or
12-24 UNC-2B screws for threaded holes or cage nuts.
The AC mains connector of the units must be connected
to a proper circuit breaker.
Install this amplier as far as possible from radio tuners
and TV sets. An amplier installed in close proximity of such
equipment may experience noise or generic performance
degradation. Placing and using the amplier for long periods
of time on heat generating sources will affect its performance.
Avoid placing the amplier on heat generating sources.
3 : 2.Cooling
Install the amplier in a well-ventilated location: the
ventilation openings must not be impeded by any item such
as newspapers, tablecloths, curtains, etc; keep a distance
of at least 50 cm from the front and rear ventilation openings
of the amplier.
All Powersoft ampliers implement a forced-air
cooling system to maintain low and constant operating
temperatures. Drawn by the internal fans, air enters from
the front panel and is forced over all components, exiting at
the back of the amplier.
The amplier’s cooling system features “intelligent”
variable-speed DC fans which are controlled by the heat sink
temperature sensing circuits: the fans speed will increase
only when the temperature detected by the sensors rises
over carefully predetermined values. This ensures that fan
noise and internal dust accumulation are kept to a minimum.
Should however the amplier be subject to an extreme
thermal load, the fans will force a very large volume of air
through the heat sink. In the extremely rare event that the
amplier should dangerously overheat, sensing circuits
shut down all channels until the amplier cools down to a
safe operating temperature. Normal operation is resumed
automatically without the need for user intervention.
Quattrocanali Series ampliers can be stacked one on
top of the other due to the efcient cooling system they are
equipped with.
There is however a safety limit to be observed: in case
a rack with closed back panels is used, leave one rack unit
empty every four to guarantee adequate air ow (see Panel
N, p. 8).
3 : 3.Cleaning
Always use a dry cloth for cleaning the chassis and the
front panel. Air lter cleaning should be scheduled according
to the dust levels in the amplier’s operating environment.
Disconnect the AC mains source before
attempting to clean any part of the amplifier
In order to clean the vent lters you need to remove the
front cover: never attempt to open any other part of the unit.
1. Firmly grip the outermost silver panel and pull it outwards
(seePanel B, p. 4).
2. When the front panel is removed, the air lter (looking
like a shiny black plastic sponge) will be exposed.
You may use compressed air to remove the dust from
lters, or wash it with clean water: in the latter case ensure
that the lter is dry prior to reassembly.
3 : 4.Precautions regarding installation
WARNING: TO PREVENT FIRE OR ELECTRIC SHOCK
 This device must be powered exclusively by earth
connected mains sockets in electrical networks
compliant to the IEC 364 or similar rules.
 Install the unit into a rack cabinet.
 A sectioning breaker between the mains connections
and the amplier should be installed inside the rack
cabinet.
 Properly t the AC mains plug to the amplier inlet.
 Before powering this amplier, verify that the correct
voltage rating is being used.
 Verify that your mains connection is capable of
satisfying the power ratings of the device.
 Do not use this amplier if the electrical power cord is
frayed or broken.
 Output terminals are hazardous: wiring connection to
these terminals require installation by an instructed
person and the use of ready-made leads.
 Take care to lock the output terminal before switching
the device on.
 To avoid electrical shock, do not touch any exposed
speaker wiring while the amplier is operating.
 Do not spill water or other liquids into or on the amplier.
 No naked ame sources such as lighted candles
should be placed on the amplier.
 Do not remove the cover. Failing to do so will expose
you to potentially dangerous voltage.
 The manufacturer cannot be held responsible for
damages caused to persons, things or data due to an
improper or missing ground connection.
 Contact the authorized service center for ordinary and
extraordinary maintenance.
It is absolutely necessary to verify these fundamental
requirement of safety and, in case of doubt, require
an accurate check by qualified personnel.
12 | Quattrocanali Series

powersoft Quattrocanali Series Specifications

General

Number of Channels	4
Frequency Response	20 Hz - 20 kHz (±0.5 dB)
Input Impedance	20 kΩ balanced
Protection	DC, thermal, short circuit, overload
Remote Control	Optional