Alto D3 Manuel de l'utilisateur - Page 5

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Alto D3 Manuel de l'utilisateur
1.
D SERIES
LTO
The
LTO
D series includes D1, D2, D3, D4. It is a line of high power, low profile, professional Power Amplifiers with
advanced features and great reliability. They deliver tremendous power in only two rack spaces, providing high level
performance under the most demanding conditions. An automatic speed fan matches cooling capacity with heat
requirements. The amplifier frame contains all solid-state circuitry, using complementary silicon output devices. The
amplifier is supplied with a single moulded AC cord having an appropriate AC plug for the intended operating voltage.
The amplifier employs forced air cooling with a variable speed fan for minimum acoustic noise. Air flow is from rear to
front to avoid temperature rise inside the Rack. D1, D3 contain two independent channels and D2, D4 contain four
independent channels, with separate AC transformer secondaries, power supplies and protection system. All protection
systems, except the main AC one, are self resetting upon removal of fault, and the remaining channel shall continue
to operate. Each channel has independent protective circuitry against short circuit, over-loads and over temperature,
and also has DC protection. Each channel has also LEDs for power-on, signal, clip and protection. Standard power
connectors are used for
can be added on the input stage of each channel.
2.
FEATURES
2U rack, multi-channel high power amplifier.
Fantastic audio quality even with extremely high volume levels.
Solid and durable, can be mounted into a cabinet.
Automatic limiter
Stereo (dual-channel), or bridge mono operating modes.
Balanced XLR,
Binding post and professional speak-on connectors for output.
Stereo, bridge, and parallel output wiring possibility.
Front panel LED indicators for power-on, signal, protection and clip.
Accurate gain control
Independent DC, thermal, overload and short-circuit protection on each channel automatically protects amplifier
and speakers.
Used together with line array cabinet in one audio system
Class D technology, switch power, light weight and high power
Manufactured under TS16949, ISO 14001 certified management system and RoHS directive.
3.
CONTROL ELEMENTS
3.1 Front Panel
1
Illuminated Power Switch
It turns on or off
the power switch illuminates blue.
2
Signal LED
Green LED, This LED lights up green when the output level reaches -20dB.
power outputs
. Input can be parallel or stereo or bridge and an high quality audio transformer
6.3 inputs / parallel outputs to ensure noiseless long wiring.
(Take the rear panel of D4 as an example)
the unit When the amplifier is powered-on,
.
4
1