Amp Output (Network Amplifiers)

Inputs

The inputs are digital audio from any appropriate component within Q-SYS Designer. There can be from one to four inputs (four channel models) or two to eight inputs (eight channel models) and is dependent on the FAST configuration. The eight channel models have two sets of four channels.

Outputs

The outputs are digital audio connecting to loudspeaker components.

70V, 100V Mode

Network amplifiers are capable of supplying 70V or 100V outputs. To use this mode, you must connect an appropriate loudspeaker component to the Amp Output component. For QSC loudspeaker components capable of using 70V or 100V, set the Mode Property of the loudspeaker component to either 70V or 100V. Q-SYS sets the amplifier to this mode when the design is deployed.

In addition, when an amplifier is set to either 70V or 100V mode, a 50 Hz high-pass filter is automatically added in line to protect the loudspeakers.

Note: To set CXD4.2Q and DPA4.2Q amplifiers to 70V or 100V mode, you must configure the outputs to channels A and B bridged, and channels C and D bridged (A+B C+D).

Properties

Refer to the Status (Network Amplifiers) component topic.

Controls

Amplifier Status

Control	Function	Default / Range
Status	Displays the current text and color status of the component: OK: The device is functioning normally. Initializing: The device is in the process of a firmware or configuration update, or the design is starting. Compromised: The device is functioning, but a non-fatal problem exists. Missing: The device cannot be discovered. Fault: The device is malfunctioning or is not properly configured. Unknown: This status appears during a Core reboot (for example, during a firmware update), or when a design is being pushed to the Core and before it has started running. Not Present: If applicable to the device, this status appears when the device is not connected to the network and its Is Required component property is set to 'No'. This status also appears if the device component's Dynamically Paired property is set to 'Yes', pairing has not been assigned in Core Manager, and the device component's Is Required property is set to 'Yes'. See Dynamic Pairing.	N / A
On/Standby	Button controls the amplifier from Standby to Power On and back.	Standby Power On
Mute All	Mutes all channels of the amplifier. Once Mute All is engaged, you must use the Mute All button to unmute the channels. The individual channel Mute is disabled while the Mute All is engaged.	Mute/Unmute
Gain Lock	Disables the gain control on the front panel of the amplifier. The gain controls in the Q-SYS Designer component are not disabled.	Disabled/Enabled
Mute Lock	Disables the mute controls on the front panel of the amplifier. The mute controls in the Q-SYS Designer component are not disabled.	Disabled/Enabled
AC Voltage	The AC Mains voltage.	100 VAC to 240 VAC
AC Current	The AC Mains current being drawn by the amplifier.
PSU Temp	Temperature of the amplifier's power supply.	55° C = Compromised State 63° C Mutes Audio
V Rail 1	Internal amplifier voltage monitor.	147VDC +/- 5V typical
V Rail 2	Internal amplifier voltage monitor.	-147VDC +/- 5V typical
Fan RPM	The fan speed varies based on the temperatures.	N / A
Meter Select	Selects either RMS or Peak for the five meters in all channels. Changing the meter type changes the meter readings on the Amp Output component and on the amplifier output gain meters.	RMS/Peak
Standalone (test button)	This control is available only in Standalone mode only. Press this button to simulate Standalone mode. You will hear the audio that is played when the amplifier is in the Standalone Mode.	Off / On

Channel (A, B, C, D), (and E, F, G, H for eight channel) Status

Control	Function	Default / Range
Channel	The channel letter changes based on the FAST™ (Flexible Amplifier Summing Technology) selection in the Properties. Single channels = A (or B, C, D) ( 8CH E, F, G, H) Parallel channels = AB (or CD) (8CH EF or GH) Bridged channels = A+B (or C+D) (8CH E+F or G+H) Refer to Properties "FAST Mode"	Default = Four separate channels – A, B, C, D (and E, F, G, H for 8-channel)
Gain	The Gain knob adjust the digital gain of the associated output channels.	Default = 0 dB Range = -100 dB tp +20 dB
Mute	Mute button mutes the associated channel of the amplifier. Linked to the Mute button on the amplifier.	Off / On
Over Current	Red LED indicating an over current condition exists in the associated amplifier channel.	False / True
DAC Limit	Red LED indicating that signal to the D to A Converter is larger than can be reproduced and a limiter has been engaged to prevent clipping. This is an indication that the gain structure is not correct.	False / True
Protect	Red LED indicating that the channel is in Protect Mode. Usually due to attempting to drive too low an impedance for too long.	False / True
Limit	Red LED indicating that the amplifier is in the limiting mode. This occurs if the signal is driving the power, current, or voltage above the amplifier rated values or due to thermal limiting.	False / True
Short	Red LED indicating there is a short in the loudspeaker circuitry.	False / True
Temp	Displays the temperature, in Centigrade, of the associated channel.	N / A

Channel (A, B, C, D) Meter

These readings can be RMS or Peak depending on the Meter Select setting.

Control	Function	Default / Range
Input (dBFS)	Measures the digital input to the amplifier output channel.	Range = -100 to 20
Voltage (V)	Measures the voltage of the amplifier / loudspeaker circuit.	Range = 0 - 150
Current (A)	Measures the current of the amplifier / loudspeaker circuit.	N / A
Power (W)	Measures the power of the amplifier / loudspeaker circuit.	N / A
Headroom (dB)	Measures the amount of headroom left before reaching the amplifier's maximum capabilities.	N / A

Monitor

There is one Listen button and one Gain control for each channel.

Control	Function	Default / Range
Listen	The Listen button activates the Loudspeaker monitor for the associated channel.	Off / On
Gain (V)	The Gain knob controls the output gain to the Loudspeaker Monitor component.	Range = -100 to +20

Control

Function

Default / Range

Listen

The Listen button activates the Loudspeaker monitor for the associated channel.

Off / On

Gain

(V)

The Gain knob controls the output gain to the Loudspeaker Monitor component.

Range = -100 to +20

Standalone

There is one Mute button and one Gain control for each channel.

Control	Function	Default / Range
Mute	Mutes the output of the amplifier channel when in Standalone Mode.	Off / On
Gain (dB)	Controls the Gain of the amplifier's output when in Standalone mode.	Default = 0 Range = -100 to 20

Control

Function

Default / Range

Mute

Mutes the output of the amplifier channel when in Standalone Mode.

Off / On

Gain

(dB)

Controls the Gain of the amplifier's output when in Standalone mode.

Default = 0

Range = -100 to 20

Control Pins

The available Control Pins depend on settings in Properties.

Amplifier

Pin Name	Value	String	Position	Pins Available
AC Current				Output
AC Mains Voltage	100 - 240	100V - 240V	0V = 0 120V = .5 240V = 1.00	Output
Fan Speed
Gain Lockout	0 1	disabled enabled	0 1	Input / Output
Mute All	0 1	unmute mute	0 1	Input / Output
Mute Lockout	0 1	disabled enabled	0 1	Input / Output
Peak/RMS Select	0 1	Peak RMS	0 1	Input / Output
Power On	0 1	Standby On	0 1	Input / Output
Power Supply Temp	n	n °C	0.000 1.000	Output
Rail 1 Voltage	142 to 152	142V to 152V	0.000 1.000	Output
Rail 2 Voltage	-142 to -152	-142V to -152V	0.000 1.000	Output
Status	0 1 2 3 4	OK (green) Compromised (orange) Fault (red) Unknown (red) Updating (blue)	0 0.250 0.500 0.750 1.00	Output

Channel (A, B, C, D) (and for 8-channel E, F, G, H)

Pin Name	Value	String	Position	Pins Available
Current	0 to 70	0 A to 70 A	0.000 1.000	Output
DAC Output Limit	0 1	false true	0 1	Output
Gain	-100 to 20	-100 dB to 20 dB	0.000 1.000	Input / Output
Headroom	0 to 70	0 dB to 70 dB	0.000 1.000	Output
Input Meter	-100 to 20	-100 dB to 20 dB	0.000 1.000	Output
Limit	0 1	false true	0 1	Output
Monitor Gain	-100 to 20	-100 dB to 20 dB	0.000 1.000	Input / Output
Monitor Listen	0 1	disabled enabled	0 1	Input / Output
Mute	0 1	unmute mute	0 1	Input / Output
Over Current	0 1	false true	0 1	Output
Power	0 to 10000	0 W to 10,000 W	0.000 1.000	Output
Protect	0 1	false true	0 1	Output
Short	0 1	false true	0 1	Output
Temperature	Text Field
Voltage	0 to 150	V to 150 V	0.000 1.000	Output