QSC MD-SP218 Manuel d'utilisateur télécharger pdf (Page 5)

TD-000367-01-A

Introduction

Built for system integrators, the CXD series ampliﬁ ers provide multi-channel ampliﬁ cation with built-in DSP and enough power to drive wide varieties

of speaker systems with optimal energy efﬁ ciency. The CXD Series consists of three light-weight, 2RU, four-channel ampliﬁ ers with on-board DSP and

ﬂ exible channel combining as well as 70V and 100V direct drive. These ampliﬁ ers not only provide the power and processing to make your system

perform better, they offer outstanding efﬁ ciency ensuring that energy costs are kept to a minimum over the life of the installation.

CXD ampliﬁ ers feature Flexible Ampliﬁ er Summing Technology (FAST). Depending on the model, 1600, 2500, or 5000 Watts of total power can be

distributed across one to four outputs. In addition, the CXD4.3 and CXD4.5, can drive 70V or 100V speaker lines directly from any one or all of the four

outputs. This ﬂ exibility allows CXD Series ampliﬁ ers to drive (for example) two full-range, surface-mounted loudspeakers along with a subwoofer and

one 100 V distributed loudspeaker line; or a high-power subwoofer and a bi-ampliﬁ ed full-range loudspeaker; three 70V distributed loudspeaker lines

and a subwoofer; or a single very high-power channel to drive monster subwoofers.

The CXD Series ampliﬁ ers use QSC’s third-generation class-D power amp design in combination with a custom power stage utilizing a new output

device. In addition, CXD ampliﬁ ers employ the proven PowerLight power supply in conjunction with Power Factor Correction (PFC) which aligns the

current waveform with the AC mains voltage waveform. PFC enables the CXD Series ampliﬁ ers to draw current from the wall in a more efﬁ cient and

controlled manner resulting in very high power from a single standard AC breaker. Additionally, the CXD Series ampliﬁ ers offer multi-stage sleep

modes saving energy when possible without sacriﬁ cing performance. The result is an exceptionally powerful and ﬂ exible platform that offers low

weight and efﬁ ciency.

With four channels of ampliﬁ cation plus signal processing in just 2RUs, the CXD series replaces equipment taking up as much as three times

the rack-space.

A single CXD Series ampliﬁ er is a capable and sophisticated loudspeaker processor. Integration of processing and ampliﬁ cation means that the DSP

knows exactly what the ampliﬁ er is doing so dynamics processing can be far more accurate and effective. This approach employs both RMS and Peak

Limiters that allow the ampliﬁ er and loudspeaker to produce more output without being pushed to distortion or destruction.

The on-board DSP offers four channels of cross-over ﬁ lters, parametric EQ/Low-shelf/High-shelf, alignment delay and dynamics processing —

everything needed to optimize a loudspeaker system. Additionally when using QSC loudspeakers, CXD ampliﬁ ers provide Intrinsic Correction™, a

combination of ﬁ ltering, limiting and loudspeaker knowhow that was ﬁ rst developed for QSC's WideLine line-array loudspeakers. Intrinsic Correction

compensates for the non-linearity in array and horn design resulting in exceptional performance.

The CXD also includes manufacturers' recommended tunings for the most popular passive loudspeakers. A system setup wizard helps you select the

right preset, or select one of the 20 conﬁ guration templates and create tunings that you can save in the user preset library.

With a dedicated front panel user interface, complete with LED meters and indicators, a 400 x 240 TFT color display, a rotary encoder and navigation

buttons, the CXD ampliﬁ ers provide an intuitive means to control the system.

Unpacking

There are no special unpacking instructions. You may want to keep the shipping material for the unlikely event that the ampliﬁ er should need

returning for service.

Package Contents

1. Quick-Start Guide TD-000350-00

2. Warning Information Sheet TD-000420-00

3. CXD Ampliﬁ er

4. IEC AC Power Cord

5. Euro-style Connector Plug, 3-pin (4)

6. Euro-style Connector Plug, 8-pin (1)

7. Euro-style Connector Plug, 3.5 mm, 2-pin (1)

8. Euro-style Connector Plug, 3.5 mm, 3-pin (1)

9. USB Cable (1)

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QSC MD-SP218 Manuel d'utilisateur Page 5

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