Related Manuals for Bogen NQ-A4060-G2
Summary of Contents for Bogen NQ-A4060-G2
- Page 1 4-Channel Audio Power Amplifier Configuration Guide NQ-A4060-G2, NQ-A4120-G2, NQ-A4300-G2 © 2021 Bogen Communications, Inc. All rights reserved. 740-00160 210812...
-
Page 2: Table Of Contents
Contents Contents ............. ii List of Figures . -
Page 3: List Of Figures
List of Figures Figure 1. Nyquist Appliance Login..........1 Figure 2. - Page 4 List of Tables Table 1. Appliance Dashboard Fields......... . .2 Table 2.
-
Page 5: Configuring The Four-Channel Audio Power Amplifiers
Configuring the Four-Channel Audio Power Amplifiers Bogen’s Nyquist-based networked four-channel audio power amplifiers (NQ-A4060-G2, NQ-A4120-G2, NQ-A4300-G2) support small, medium, and large Nyquist intercom solu- tions in schools and in commercial paging and public address solutions. Available in 240-, 480-, and 1200-watt models, the audio power amplifiers provide flexi- bility and versatility without the need for add-on modules. -
Page 6: Using The Dashboard
At the Nyquist Appliance Login page, enter username and password, and then select Login. The default username is admin; the default password is bogen. The dashboard for the selected appliance appears. Figure 2. 4-Channel Power Amplifier Dashboard Using the Dashboard The dashboard displays the following fields: Table 1. -
Page 7: Standalone Operation
The following buttons are available at the top of all pages in the application. Table 2. Appliance Dashboard Buttons Dashboard Displays the dashboard. Configuration Settings Accesses the Configuration Settings page where you can view and set various options. If Standalone Operation is not enabled, you can also receive configuration settings from a Nyquist server. -
Page 8: Updating Firmware
Standalone Operation mode is ideal for scenarios that do not require the full functionality provided by an integrated system, such as the Bogen C4000 or E7000 Series, but has the ability to provide paging, multi-channel audio processing, and a SIP endpoint for a PBX/ VoIP phone system. -
Page 9: Table 3. Firmware Update Settings
Check for Updates button checks the Bogen website for the latest firmware version available. If a version newer than the one currently installed is found, it is downloaded to the appliance. Alternatively, if you already have a firmware file you would like to install to the appli-... -
Page 10: Network Settings Tab Parameters
Table 3. Firmware Update settings Restore Factory Settings Returns the appliance to its original factory con- figuration. Note: This does not install the original appliance firmware. The firmware will not be changed. Reboot Appliance Restarts the appliance. Network Settings Tab Parameters Network settings can be configured dynamically by the Nyquist server or manually by using the appliance’s web UI. -
Page 11: Figure 4, Network Settings
Figure 4, Network Settings Network settings are described in the following table: Table 4, Network Settings IP Address Identifies the IP address assigned to the appliance. Netmask Identifies the subnetwork subdivision of an IP net- work. Gateway Identifies the address, or route, for the default gate- way. - Page 12 Table 4, Network Settings (Continued) NTP Server Identifies the IP address or the domain name of the Network Time Protocol (NTP) Server. Note: This field is only editable when Standalone Operation is enabled. TFTP Server Identifies the host name or IP address of the Trivial File Transfer Protocol (TFTP) server.
-
Page 13: Configuration Settings Tab Parameters
Table 4, Network Settings (Continued) DHCP Enabled Indicates if the device is enabled to use DHCP to retrieve its IP configuration. Reboot Appliance Indicates that this appliance should reboot when the Save button is clicked. Configuration Settings Tab Parameters The easiest way to configure Nyquist appliances is to obtain configuration settings from the Nyquist server by selecting Get Configuration From Server. -
Page 14: Figure 5. Appliance Configuration Settings (Standalone Disabled)
Figure 5. Appliance Configuration Settings (Standalone disabled) The following table describes the Configuration Settings tab settings when Standalone Operation is enabled for this device: Table 5. Configuration Settings (Standalone disabled) Get Configuration from Retrieves configuration settings (i.e., web username, server, and local port) from the TFTP server specified in Server the Network Settings (see "Network Settings Tab Parameters”... - Page 15 Table 5. Configuration Settings (Standalone disabled) Audio Distribution Identifies the IP address, port number, cut level (vol- ume), and station list used for audio distribution. Multicast # Identifies the IP address, port number, cut level (vol- ume), and station list used for the multicast audio stream of one (or more) zones.
-
Page 16: Standalone Operation Configuration Settings
Standalone Operation Configuration Settings Figure 6. Appliance Configuration Settings (Standalone enabled) The following table describes the Configuration Settings tab settings when Standalone Operation is enabled for this device:... -
Page 17: Table 6. Configuration Settings (Standalone Enabled)
Table 6. Configuration Settings (Standalone enabled) Device Type Displays the type of this device. Device Name Provide a name for this device. Web Username Provide a web username for this appliance. Web Password Provide a web password for logging into the appliance. Web Confirm Password Re-enter the password used to log into the appliance. - Page 18 Table 6. Configuration Settings (Standalone enabled) SIP Password Specify the SIP registration password used to register Channel A, B, C, or D with the SIP server. (Channel A/B/C/D) Cut Level Specify the intercom volume to be used for SIP calls over Channel A, B, C, or D.
- Page 19 Codec Specifies the codec to be used when decoding audio. Select one of the following values: • G711 u-law • Intercom quality • A narrowband audio codec that provides toll-qual- ity audio at 64 kbps. The u-law version is primarily used in North America and Japan.
-
Page 20: Accessing Log Files
Channels Channel(s) on which the audio streams will be output. One or more of the following values: • Channel A • Channel B • Channel C • Channel D Cut Level (dB) Specifies the cut level for the audio stream. This can be a value from -70 to 0 dB. -
Page 21: Figure 7, Logs
To export the file, select Export. A link to a .txt file appears in the browser’s lower left corner. Figure 7, Logs Available logs are described in the following table. If a log file is empty, however, it will not appear in the drop-down list of available logs. Table 7, Logs Description ampws.log... -
Page 22: Setting Dsp Parameters
Table 7, Logs (Continued) Description dpkg.log Contains information that is logged when a package is installed or removed using dpkg command. faillog Contains user failed login attempts. kern.log Contains information logged by the kernel and recent login information for all users. lastlog Contains information on the last login of each user. - Page 23 Digital VoIP audio streams received over the network—whether as SIP-initiated phone calls or as multicast audio (see SIP and Multicast configuration settings in "Configuration Settings Tab Parameters” on page 9)—are also controlled by the mixer’s output channels (A, B, C, and D). Tip: Be aware that the output levels of digital audio streams received over the network are controlled by the same sliders that control analog line input signals.
- Page 24 to that channel (though some DSP features are channel-independent, such as Router and Status), such as compressor, noise gate, filters, equalizers, and limiters, as well as features for monitoring the signal and the amplifier status. You can even load groups of pre- defined DSP settings, known as DSP presets, and assign them to the channel connected to that speaker.
- Page 25 Table 8. DSP Page Pink Noise When set to ON, a pink noise signal will be sent to the out- put channel. Phase Invert When set to ON, the signal for this channel is inverted, usually to prevent two similar but out-of-phase signals from canceling each other out.
-
Page 26: Setting The Channel Level
Table 9, DSP Features Settings Allows you to provide names and colors for the input and output channels. Signal Present Allows you to specify the signal level at which the signal LED will be lit, as well as how long it will remain lit. Standby Allows the amplifier to automatically put itself in a low power standby mode when there is little or no signal. -
Page 27: Muting A Channel
Muting a Channel You can mute a channel to cut off an audio signal and stop the input signal from being sent to the output channel. Note the input signal will still be visible on the IN meter, but the OUT meter will show that nothing is being forwarded to the output channel. To mute a channel: On the appliance Web UI’s main page, select DSP. -
Page 28: Amplifier Mute
Amplifier Mute The Amplifier Mute feature disables the output signal when the input signal registers below a specified threshold. It operates at the hardware level, and as such, can minimize or eliminate noise that is generated by the device itself, such as the popping sound that can occur when the amplifier is turned on or off. -
Page 29: Compressor
Table 10. Amplifier Mute Settings Enable Enables or disables the amplifier mute effect for this chan- nel. Threshold Sets the minimum threshold level that the signal must reach to allow the signal to be sent to the output channel. Threshold range is -135 to +21 dB. Status Indicates if channels A/B and C/D are in Amplifier Mute mode (On) or not (Off). -
Page 30: Table 11. Compressor Settings
Note: If you want to return to the factory settings, select the Reset icon that appears in the right corner. Select Enable to apply the settings to the selected channel. Table 11. Compressor Settings Enable Enables or disables the compressor DSP effect for this channel. - Page 31 Table 11. Compressor Settings Ratio Sets the compression ratio to be applied to the signal. For example, if the ratio is set for 6 (6:1), the input signal must increase by 6 dB for the output level to increase by 1 dB.
-
Page 32: Delay
Delay A delay effect causes the signal to be delayed by a configurable time interval from 0 to 30 milliseconds. This can be useful for synchronizing playback between different channels which, for various reasons, may be playing out-of-sync. Figure 11. Delay Settings To adjust the Delay settings for a channel: On the appliance Web UI’s main page, select DSP. -
Page 33: Graphic Eq
Make desired adjustments using the controls described in Table 12, “Delay Settings,” on page 29. Table 12. Delay Settings Delay (ms) Sets the number of milliseconds by which the input signal will be delayed before sending it to the output channel. Signal LED Illuminates when the input signal is present. -
Page 34: High/Low Pass
By default, each knob is set at 0 dB, which means that no frequencies are being boosted or cut. Note: For the best results, frequencies should be cut only. Boosting frequencies to com- pensate for room dimensions or speaker response deficiencies usually results in a loss of headroom in the signal chain. -
Page 35: Figure 13. High/Low Pass Parameters
You can specify the range of frequencies that will pass through the high-pass and low- pass filters and select the type of filter that is used through the channel’s High/Low Pass drop-down menu option. Figure 13. High/Low Pass Parameters To adjust the high/low pass parameters for a channel: On the appliance Web UI’s main page, select DSP. -
Page 36: Table 13. High/Low Pass Parameters
Table 13. High/Low Pass Parameters High-Pass (Low Cut) This feature helps eliminate low-frequency noise (signals of 100 Hz and below, such as background rumble from ventilation systems, etc.) and is used primarily with micro- phone-level input. It is particularly effective when handheld microphones are used. Frequency Set the cutoff frequency. -
Page 37: Limiter
Table 13. High/Low Pass Parameters Low-Pass (High Cut) This feature helps eliminate high-frequency noise (signals of 8000 Hz and above) such as background hiss and sibilance (excessive "S" in vocals, etc.) and is used primarily with microphone-level input. It is particularly effective when handheld microphones are used. -
Page 38: Figure 14. Limiter Settings
Figure 14. Limiter Settings To adjust the limiter settings for a channel: On the appliance Web UI’s main page, select DSP. Select the Menu button for the channel or select the Menu button for the Output. From the drop-down menu, select Limiter. Note: If you want to return to the factory settings, select the Reset icon that appears in... -
Page 39: Noise Gate
Table 14. Limiter Settings Threshold Sets the signal level at which the limiter is triggered. Any signal exceeding this threshold will be compressed to this level. The range is -24 to +24 dB. Decay Sets the rate for turn off of the limiter after the signal is below the threshold. -
Page 40: Figure 15. Noise Gate Settings
Figure 15. Noise Gate Settings To adjust the noise gate settings for a channel: On the appliance Web UI’s main page, select DSP. Select the Menu button for the channel. From the drop-down menu, select Noise Gate. Note: If you want to return to the factory settings, select the Reset icon that appears in the right corner. -
Page 41: Parametric Eq
Table 15. Noise Gate Settings Attack Sets how long it takes for the gate to open once the signal reaches the threshold level. Attack range is 1 to 500 ms. Hold Sets the length of time the gate will stay fully open after the signal reaches the threshold level. -
Page 42: Peak Limiter
To adjust the parametric equalizer settings for a channel: On the appliance Web UI’s main page, select DSP. Select the Menu button for the channel. From the drop-down menu, select Parametric Note: If you want to return to the factory settings, select the Reset icon that appears in the right corner. -
Page 43: Figure 17. Peak Limiter Settings
Tip: The Presets feature contains predefined Peak Limiter settings for a number of specific speakers. Figure 17. Peak Limiter Settings To adjust the Peak Limiter settings for a channel: On the appliance Web UI’s main page, select DSP. Select the Menu button for the channel. -
Page 44: Presets
Table 16. Peak Limiter Settings Enable Enables or disables the Peak Limiter DSP effect for this channel. Threshold Sets the threshold level, which is the point where the signal activates the compressor circuit. The range is -135 to +21 dB. Attack Sets how quickly or slowly compression will be applied to the signal once the audio signal goes above the... -
Page 45: Figure 18. Presets Settings
(JSON-encoded) files, which allows them to be backed up or shared between devices. Bogen has provided a number of predefined DSP presets. These configurations are defined and optimized for specific speakers. DSP presets can be selected and applied to each individual channel. Selecting a preset will apply the predefined settings for that channel, potentially overwriting any existing settings. -
Page 46: Table 17. Preset Settings
Prompts the user to select one or more preset configura- tion files from the local computer. These files must contain JSON-encoded DSP preset configurations that were previ- ously downloaded or provided by Bogen technical sup- port. Once uploaded, the new DSP preset configurations will be available for use. -
Page 47: Rms Limiter
RMS Limiter The primary purpose of the RMS Limiter is to protect the speakers from the thermal damage that can be caused by extended periods of excessive power usage. Any signal whose RMS level exceeds the threshold will be compressed, thereby reducing the signal. RMS Limiter uses the RMS (root mean square) level, which is proportional to the average amount of energy over a short period of time, to determine when a signal has... -
Page 48: Table 18. Rms Limiter Settings
Note: If you want to return to the factory settings, select the Reset icon that appears in the right corner. Make desired adjustments using the controls described in Table 18, “RMS Limiter Set- tings,” on page 44. Select Enable to apply the settings to the selected channel. Table 18. -
Page 49: Router
Router Router settings allow you to specify where to output a line input signal and how much to adjust its level. For each input, you can: • Adjust the Analog Input Gain. This adjusts the electronic gain for the input signal. •... -
Page 50: Settings
Select the Menu button for any channel. From the drop-down menu, select Router. Enable the desired Inputs (green). Enable the desired Outputs (blue). Enable the output channels to which each input is to be routed (gray). Adjust the Analog Input Gain for each desired channel to ensure a strong input sig- nal is being received. -
Page 51: Figure 21. Settings Parameters For 4 Channel Mono
Figure 21. Settings Parameters for 4 Channel Mono For example, if channels A and B and channels C and D have been placed in Single Chan- nel Bridged Mode, then only two channels appear. To adjust the settings for a channel: On the appliance Web UI’s main page, select DSP. -
Page 52: Signal Present
Note: If you want to return to the factory settings, select the Reset icon that appears in the right corner. Select Save. Signal Present You can configure the threshold level that a signal must reach before the signal LED is lit, as well as how long the LED will remain lit. -
Page 53: Standby
Select the Menu button for the channel. From the drop-down menu, select Signal Present. Note: If you want to return to the factory settings, select the Reset icon that appears in the right corner. Adjust the following settings as needed. Table 19. -
Page 54: Figure 23. Standby Settings
Figure 23. Standby Settings To adjust the Standby settings for a channel: On the appliance Web UI’s main page, select DSP. Select the Menu button for the channel. From the drop-down menu, select Standby. Note: If you want to return to the factory settings, select the Reset icon that appears in the right corner. -
Page 55: Status
Table 20. Standby Settings Enable Enables or disables the standby feature for the amplifier. Threshold Amp AB and Sets the threshold level for channels A/B and for chan- nels C/D. Threshold Amp CD If the signal level remains below this level for 200 sec- onds or longer, the amplifier is put into low power Standby mode. -
Page 56: Figure 24. Status For 2-Channel
Figure 24. Status for 2-Channel... -
Page 57: Figure 25. Status When All Channels Are Bridged
Figure 25. Status When All Channels Are Bridged To view status for the power amplifier: On the appliance Web UI’s main page, select DSP. Select the Menu button for the channel. From the drop-down menu, select Status. The view-only information that appears is described in the following table:... - Page 58 Table 21. Status Switch Position Indicates the position of the Amplifier Mode switch located on the rear of the appliance. Bridged mode is typi- cally used when higher-power, single-channel operation with a high-impedance loudspeaker load is needed. For information about setting the Amplifier Mode, refer to the installation manual for the appliance.