Section 2: Installation- Connections

CONNECTION TO 10BASE-T (network connection)

Connection to the Ethernet network is made using the RJ-45 type connector labeled 10BASE-Ton the rear panel.“RJ-45” is the standard network connector for Ethernet networks. Insert the RJ- 45 plug into the receptacle with the lock-tab oriented toward the bottom of the CM16a and push firmly until the connector locks into place (usually an audible “click” can be heard). Refer to Section 1 of this manual for Ethernet connection schemes and cabling. If the CM16a is connected directly to the system control- ler computer’s network interface card, a crossover type cable is required. All other connection methods utilize normal Ethernet cabling.

CONNECTING TO THE RS-232 PORT

Connection is made with a null-modem serial cable with a DB-9 male plug to the CM16a. The RS-232port can be used for setting various operational parameters that are CRITICAL to proper operation of the CM16a. The network address settings can be changed through this port. Do Not Change the Network

Address unless you are certain of what you are doing!

Refer to Section 3 (page 27) for more information.

CONNECTING TO 2-CHANNEL AMPLIFIERS

2-channel amplifiers require a cable connection from the amp’s DataPort to the appropriate PORT receptacle on the CM16a. These HD-15 type connectors are labeled PORT A through PORT H. Use standard 15 pin VGA monitor cables (the same type of cable that interconnects PC’s & monitors).

To connect the cable to the CM16a, orient the HD-15 connector with its wider-side down (look at the connector, one side of the plug’s metal surrounding is wider than the other) and align it with the receptacle, then gently push into the receptacle until it is firmly seated. Use the retaining screws on the cable ends to secure the plug to the CM16a and the amplifer. Tighten “finger tight” to avoid damage to the HD-15 receptacle. The same basic procedure applies for connecting the other end of the cable to the amplifier’s DataPort.

CONNECTING TO 4-CHANNEL AMPLIFIERS

Two basic rules must be adhered to:

First, both DataPorts of the amplifier must be used.

Second, both must be connected to the same CM16a.

If only one DataPort connection is used, the CM16a will not control or monitor the amplifier correctly (the same applies for connecting the two amplifier DataPorts to two separate CM16a’s; the system will not function properly). Insure that both amplifier DataPorts are used and that they are connected to the same CM16a. You do not have to use adjacent ports on the CM16a (i.e. PORT C and PORT D). You can use any two ports for convenience; the only impact of doing this is that the System Manager software control panel will not show all four channels next to each other.

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QSC Audio CM16a Connecting to the RS-232 Port, Connecting to 2-CHANNEL Amplifiers, Connecting to 4-CHANNEL Amplifiers
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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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