QSC Audio CM16a manual ARCHITECT’S and ENGINEER’S Specifications

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SECTION 5: ARCHITECT’S AND ENGINEER’S SPECIFICATIONS

The Amplifier Network Monitor shall provide input, output, and status control for DataPort equipped QSC power ampli- fiers in an Ethernet-TCP/IP based network audio system. Sixteen independent channels shall be provided, grouped in pairs.

Amplifier Input Control and Monitoring—For each of the sixteen power amplifier input signals, the CM16a shall provide level, mute and polarity control, pre and postfadesignallevelmeteringandaudiomonitoring, and selectable 1Vrms or 3Vrms input sensitivity. The Amplifier Network Monitor shall provide a page input, separate from the normal program inputs, whose signal may preempt the program signal of any orallofthesixteenprogramchannels.Thisinputshall have selectable 1V or 3V sensitivity.

Amplifier Output Monitoring—For each of the sixteen power amplifier outputs, the Amplifier Network Monitor shall provide clipping detection, short and open circuit detection, voltage and current meter- ing, and audio monitoring of the voltage signal.

Amplifier Management—For each of the eight DataPort connections, the Amplifier Network Monitor shall provide AC standby/operate mode control, AC power state indication, temperature metering, load status, and protect status detection.

Audio Monitoring Chain—For each of the sixteen pro- gram channels, the Amplifier Network Monitor shall provide three monitor points as follows: (1) pre-fader control, (2) post-fader control, or (3) power amplifier output. A channel’s monitor output may be selected from one of these three signals, or it may be switched off. The signal at the Amplifier Network Monitor’s monitor output connector shall be the sum of the signal at its monitor input connec- tor and four selected (cont’d. next column-->)

channel monitor signals. A monitor gain control shall be provided for each monitor tap point to adjust the individual levels of the channel monitor signals prior to their being mixed with the monitor input signal.

Contact Closure I/O—The Amplifier Network Monitor shall provide a trigger contact-closure sense input which shall also be CMOS & TTL signal compatible, and one dry-contact floating SPDT relay output.

Data Network—All Amplifier Network Monitor functions shall be controlled and monitored via a 10BASE-T Ethernet digital control network using the IP trans- port protocol and the QSControl monitoring appli- cation protocol. Rear-panel connection shall be provided for 10BASE-T Ethernet. Other than the AC power switch, the Amplifier Network Monitor shall have no manual controls.

Amplifier Interface—The Amplifier Netrwork Monitor’s interface to each power amplifier Data Port shall be via an HD-15 connector. The amplifier interface shall use a standard personal computer Video Graph- ics Adapter (VGA) CRT monitor cable. This interface shall transmit two amplifier input audio signals as well as all control and monitoring signals. Special signal conditioning and grounding techniques shall be used in this interface to ensure negligible levels of noise and crosstalk.

General—All audio inputs and outputs shall be balanced with a nominal input level of +4 dBu and maximum level of +21 dBu. Input connectors shall be of the “Phoenix” detachable terminal strip type.

The Amplifier Network Monitor shall be the QSC CM16a.

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Contents CM16a Amplifier Network Monitor ¨ Warning ¨ Table of Contents CM16a Amplifier Network Monitor Federal Communications Commission FCC Information Introduction- Overview Introduction- Physical Characteristics & Layout Physical CharacteristicsIntroduction- Physical Layout Diagram Introduction- List of Functions & Features Functional LISTING, Block Diagram & Detailed DescriptionsIntroduction- Block Diagram part Introduction- Block Diagram part Introduction- Detailed Description of Functions Introduction- Detailed Description of Functions Amplifier Monitoring FunctionsRS-232 Port Functions Introduction- Network Description Introduction- Sample Network Topologies Introduction- Sample Network Topologies Installation- Basics and Mounting What is Included in the CartonUnpacking Location ConsiderationsInstallation- Mounting and AC Power Connecting AC PowerInstallation- Connections Connecting Audio InputsConnecting page Input Connecting the RLY/TRGConnecting the RLY OUT Connecting the Monitor Chain OUTConnecting to the RS-232 Port Connecting to AmplifiersInstallation- Rear Panel Detail Installation- Hookup Example Safe levels ANY time Bypass mode is used Operation- GeneralOperation- LED Behavior & Bypass Switch Usage There are two distinctly different Bypass modesOperation- Bypass Switch Usage Uploading a new application file Tftp file transferOperation- Serial Port I/O Interface Xon/Xoff IP Address Assignment Only Required for Attaching to Existing NetworksOperation- Telnet Access Operation- Fuse Replacement Fuse ReplacementSpecifications- Dimensions Specifications Input Signal ProcessingPower amplifier output processing Power amplifier management Control room foldback monitoringContact closure inputs and outputs Network Interface RS232 PortGeneral ARCHITECT’S and ENGINEER’S Specifications Appendix- Ethernet Cable Pinouts Ethernet CablingAppendix- DataPort Pin-out & Connector P-N’s Pin Signal DescriptionDescription Encode Signals How to Contact QSC Audio Products
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CM16a specifications

The QSC Audio CM16a is a versatile and powerful amplifier designed to meet the demands of professional audio applications. Known for its reliability and performance, the CM16a is ideal for both live sound and installation scenarios, offering a perfect blend of advanced technology and user-friendly features.

One of the standout features of the CM16a is its Class D amplifier architecture. This technology ensures not only high efficiency but also a lightweight design, making it easier to transport and install in various settings. The amplifier delivers an impressive output power of 1600 watts at 4 ohms, providing ample headroom for demanding audio applications. The CM16a is capable of handling multiple speaker configurations, making it a flexible choice for various setups.

Another key characteristic of the QSC CM16a is its advanced thermal management system. This built-in feature ensures the amplifier operates within safe temperature limits, enhancing reliability and extending the lifespan of the unit. The CM16a also includes an intelligent protection circuit that safeguards the amplifier from overload and short circuits, allowing users to operate it confidently even during intense performances.

The CM16a comes equipped with multiple inputs and outputs, including XLR and TRS connectors, enabling seamless integration with a range of audio sources and systems. This versatility allows for easy connection to mixers, microphones, and instruments, making it suitable for diverse applications from concerts to corporate events.

In addition to its robust performance, the QSC CM16a features an intuitive front panel design with LED indicators for quick monitoring of system status and performance. Users can easily adjust levels and settings, ensuring optimal audio quality for any given situation.

The amplifier is also designed with efficiency in mind, incorporating Power Factor Correction (PFC) technology. This enhances power usage, reducing operational costs while minimizing environmental impact.

In conclusion, the QSC Audio CM16a stands out as a premier choice for audio professionals seeking a reliable, high-performance amplifier that can deliver exceptional sound quality. With its Class D technology, advanced protection features, versatile connectivity, and user-friendly design, the CM16a is a worthy investment for any audio application. Whether for live sound reinforcement or permanent installations, the CM16a promises to meet the needs of even the most demanding audio environments.
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