Power amplifier management

Section 4: Specifications

Power amplifier interface

Compatibility	QSC Data Port equipped amplifiers
Connector and cable
	HD-15 VGA cable, 2 meters length
	qualified (for longer runs, contact
	QSC’s Technical Services Department)

Amplifiers	16 amp channels grouped in pairs

Amplifier status monitor
Clip indicator	Senses channel clipping
Bridge mode status	Sense bridge mode setting

Protect indicator	Senses amplifier protect status
Temperature meter	Reports amplifier operating
	temperature
Over-Temp. Alert	Software adjustable threshold

AC power control
AC mode control	Switches amplifier between
	normal and standby mode
AC power indicator	Indicates operate, standby, or
	power-down mode

Control room foldback monitoring

Signal monitoring buses	1
(per CM16)

Number of Channels	4

Internal signal tap points
Pre-fader input signal	16
Post-fader input signal	16
Power amplifier output	16

Monitor input	Mixed with tap point signal at
	unity gain
Nominal level	+4 dBu
Maximum level	+21 dBu
Input impedance	10 kOhm balanced
Configuration	Electronically balanced, shield
	connected to chassis
Common-mode rejection	Typical, >50 dB, 20 Hz - 20 kHz
	Worst case, >40 dB, 20 Hz-20kHz

Output	Sum of Monitor input and
	signal from internal monitor
	tap point
Frequency response	25 Hz–20 kHz ±0.5 dB
Distortion	<0.05% THD @ +4 dBu out
Noise floor	-90.5 dB
Nominal level	+4 dBu
Maximum level	+21 dBu
Output impedance	75 Ohms balanced
Output load	600 Ohms minimum
Configuration	Active balanced

Level	Adjusts amplitude of signal from
	tap point
Monitor in to monitor out	0 dB, ±0.5 dB
Control range	-95.5 to 0 dB in 0.5 dB steps

Contact closure inputs and outputs

Inputs	1 discrete input (RLY/TRG IN)
Configuration	Single-ended input
Resistance for closure detect <1kOhm max
Resistance for open detect	>5 kOhm min
Input Voltage Limit	7.000 VDC maximum

Output	1 discrete output (RLY OUT)
Configuration	Electromechanical relay, dry
	contacts, floating, C, NC, NO
Steady-state current (max.)	0.5 A
Switched current (max.)	0.25 A
Ground isolation	70 volts maximum

“-” input terminal connected to chassis	Connector	“Phoenix-style” (a.k.a.“Euro-style”)
	Connector	“Phoenix-style” (a.k.a.“Euro-style”)
		detachable terminal block connectors

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.

Section 4: Specifications