Axiom QC2.4, Руководство пользователя

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GENERAL INFORMATION
Thank you for having chosen a PROEL product.
QC series is based on PROEL DA amplifiers, a new generation of digitally controlled Class D power modules with Switch
Mode Power Supply (SMPS) featuring an innovative technology. Unlike most of the competitors in this range, which use
a fixed switching frequency, the PWM (Pulse Width Modulation) output stage of DA modules uses a variable switching
frequency according to the input signal level. This technology offers performances far above most of the products
currently available on the market: better sound definition, high-fidelity reproduction of any frequency of the audio
range, higher dynamics at any signal level with low distortion even at very high powers. The superior sound quality can
be compared with top-of-the-range AB-class analog systems, while DA modules thanks to the use of SMPS and Class D
feature very compact size and light weight, efficiency above 90% and negligible heat dissipation.
The very high efficiency levels result also in a significant reduction in the energy waste associated with large installations,
a noticeable reduction in operating costs and a direct benefit to the environment. Featuring high power levels in a
lightweight and compact chassis, the QC amplifiers are much easier and more economical to transport than conventional
models and this, in turn, makes them even more environmentally friendly.
In the top-of-the-range model, QC2.4, the use of PFC (Power Factor Correction) technology used for the power supply
stage guarantees that the performance of the amplifier is always stable, even when the voltage is not. Regardless of any
eventual fluctuations of the power supply, the QC2.4 will always be able to deliver the highest level of power.
QC amplifiers feature an ergonomic and functional design with removable dust filters, for an easy maintenance in all
conditions of use and therefore extensive durability. The protection system includes thermal protection, short circuit
protection, high frequency protection and CLIP LIMITER circuit.
CONTROLS AND CONNECTIONS
1. Power switch and Power indicator
Amplifier is "ON" when the switch is in the "I" position. The Blue LED indicates amplifier has been turned on.
2. RESET BUTTON
This button can be used to reset the QC amplifier’s DSP for service operations. Use a paper clip rod to press and
hold this button when powering the amplifier ON: this will perform a reset of the CORE DSP and set it back to the
factory preset “1-D-Default” (all the stored presets are cancelled). This operation can be useful in case you cannot
connect the QC amplifier to a PC for checking and modifying the DSP parameters, but you need to use it anyway as a
standard amplifier. Remind that QC amplifiers have always a 1.6mS latency also if the internal CORE DSP is completely
flat.
3. PRONET Network IN connector
This is a standard RJ45 CAT5 connector, used for transmission of remote control data over long distance or multiple unit
applications. See PRONET section further on this manual.
4. PRONET Network OUT connector
This is a standard RJ45 CAT5 connector, used for transmission of remote control data over long distance or multiple unit
applications. See PRONET section further on this manual.
5. TERMINATE switch
When connected to a PRONET network the last device must be terminated (with an inner load resistance) especially in
a long run cabling: press this switch if you want to terminate the unit. The yellow LED indicates the termination status:
ON when terminated, OFF when not terminated.
6. ID button
This button is used to assign an ID number to the amplifier. If you press and hold this button when powering the amplifier
ON you’ll force the internal DSP to re-assign an ID to the unit for the PRONET remote control operation. See PRONET
section further in this manual
Note: for a correct operation keep the ID button pressed until the internal relais connect the outputs or wait at least 10
seconds before releasing it.
7. COM indicator
The COM LED glows when the correct PRONET network communication is active.
8. PARALLEL mode indicator
This yellow LED glows when the channel pair 1-2 or 3-4 is in parallel mode.
9. BRIDGE mode indicator
This yellow LED glows when the channel pair 1-2 or 3-4 is in bridge mode.