QSC Audio CM16a manual Operation- General, Safe levels ANY time Bypass mode is used

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Section 3: Operation- General

AMPLIFIER SETUP- The amplifiers connected to the CM16a should have their power switches in the ON position and their gain

controls set as required by the user (seeInitial Testing note below).

NOTE! For initial testing, it is advisable that the amplifiers be set for the lowest useful gain (volume) setting until it is verified that the system is operating as expected. After the system setup has been verified and tested, gain settings may be set as required

NETWORK- The network should be operable and QSControl software should be installed/running on the system controller computer.

CM16a OPERATION- Turn the Power ON!

Operation of the CM16a is accomplished with QSControl software. The only operation required on the CM16a itself is flipping the power switch from the OFF position to the POWER (ON) position. It is important to understand the start-up behavior outlined below.

When first taken out the box, the CM16a will power up in a muted state with all faders at -95.5 dB., polarity set to normal, sensitivity set to 3V, and any amplifiers connected to the CM16a will be in STANDBY mode. This “setup” is the factory setting for Preset #0. The CM16a has 16 presets for quickly recalling settings. They are numbered 0 (zero) through 15. These presets are useful for quickly changing from one setup to another without having to change each individual control to a new setting. An example might be in a house of worship where the audio system setup is different for each service. Instead of having to keep a trained system operator on location, another individual with minimal training can be shown how to change to the desired preset for each situation.

The presets are useful tools, but Preset #0 acts differently than the others. Each time the CM16a is powered up, it recalls its settings from Preset #0. The factory Preset #0, discussed above, is a muted state with amps in STANDBY mode. When setting up your own presets, they should be stored in Preset #1 through Preset #15. The reason for not actively using Preset #0 is as follows: Let’s say you’re operating your system in Preset #12 and you change the setting of one fader. The new setup is NOT the same as Preset #12, so the CM16a starts a 4 minute timer from the time the control was changed. After the 4 minutes has elapsed with no further control changes, it saves the NEW scene into Preset #0 . Preset #12 is left unchanged. Whatever was in Preset #0 is now gone forever. This insures that the next time the CM16a is powered up, it’s settings are the same as you left them. Remember, the CM16a always powers up in Preset #0. Refer to the software documentation for further information.

Preset #0 will only be overwritten 4 minutes after the last control change. This includes if the CM16a is placed into one of its BYPASS modes as discussed in the following section. If the CM16a is placed into BYPASS mode and operated for at least 4 minutes without control changes, then the BYPASS mode is saved in Preset #0. The next time the CM16a is powered up, it will start up in Preset #0 (or BYPASS in this case). This could cause dangerously high output levels from the system. Insure amplifier gain controls are reduced to

safe levels ANY time BYPASS mode is used.

The CM16a has all outputs momentarily muted at power-up to prevent unexpected audio pops, clicks or thumps. Remember: At power up, the CM16a will always start operating with the settings saved in Preset #0. Once network communication has been established between the host computer and the CM16a, the CM16a may be controlled remotely . In the event that the network communications link is

lost while the CM16a is operating, it will continue to operate with its last settings intact.

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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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