Bogen NQ-A4060 Configuration Manual
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Bogen NQ-A4060 Configuration Manual

4-channel audio power amplifiers
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4-Channel Audio Power Amplifiers
Configuration Manual
NQ-A4060, NQ-A4120, NQ-A4300
2019 Bogen Communications, Inc.
All rights reserved.
740-00099D
191101

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Summary of Contents for Bogen NQ-A4060

  • Page 1 4-Channel Audio Power Amplifiers Configuration Manual NQ-A4060, NQ-A4120, NQ-A4300 2019 Bogen Communications, Inc. All rights reserved. 740-00099D 191101...

  • Page 3: Table Of Contents

    Contents List of Figures ................v List of Tables ................vii Configuring the Four-Channel Audio Power Amplifiers 1-1 Using the Dashboard ................3 Updating Firmware ..................4 Setting Network Tab Parameters ............6 Setting Configuration Tab Parameters ..........8 Accessing Log Files ................10 Setting DSP Parameters ..............

  • Page 5: List Of Figures

    List of Figures Figure 1, Nyquist Appliance Login ......2 Figure 2, Matrix Mixer Pre-Amp Dashboard ....2 Figure 3, Firmware Update Page .

  • Page 7: List Of Tables

    List of Tables Table 1, Appliance Dashboard Read-Only Fields ....3 Table 2, Appliance Dashboard Buttons ..... . . 3 Table 3, Network Settings .
  • Page 8 viii...

  • Page 9: Configuring The Four-Channel Audio Power Amplifiers

    Configuring the Four-Channel Audio Power Amplifiers Bogen’s Nyquist-based networked four-channel audio power ampli- fiers (NQ-A4060, NQ-A4120, NQ-A4300) support small, medium, and large Nyquist intercom solutions in schools and in commercial paging and public address solutions. Available in 240, 480, and 1200-watt models, the audio power ampli- fiers provide flexibility and versatility without the need for add-on modules.

  • Page 10: Figure 1, Nyquist Appliance Login

    Step 2 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, Matrix Mixer Pre-Amp Dashboard...

  • Page 11: Using The Dashboard

    Using the Dashboard The dashboard displays the following read-only fields: Table 1, Appliance Dashboard Read-Only Fields Device Type Identifies the physical device used by the station. Serial Number Identifies the serial number for the device. MAC Address Specifies the Media Access Control (MAC) address, which is a unique identifier assigned to network interfaces for commu- nications on the physical network segment.

  • Page 12: Updating Firmware

    Table 2, Appliance Dashboard Buttons Help Accesses the appliance’s online help. Manual Displays the appliance’s configuration manual. Logout Logs out of the appliance’s dashboard. Updating Firmware When you select Firmware Update from the appliance’s web UI, the Firmware Update page appears. From this page you can determine which Nyquist version the appliance is using and if an update is required.

  • Page 13: Figure 3, Firmware Update Page

    Figure 3, Firmware Update Page To use the Firmware Update page: Step 1 On the appliance web UI’s main page, select Firmware Update to ensure you have the latest firmware version. Step 2 Select Upload Firmware to upload firmware from the server to the appliance.

  • Page 14: Setting Network Tab Parameters

    Setting Network Tab Parameters Network settings can be configured dynamically by the Nyquist server or manually by using the appliance’s web UI. To manually configure network settings: Step 1 On the appliance web UI’s main page, select Network Settings. Step 2 Select your desired network settings.

  • Page 15: Table 3, Network Settings

    Network settings are described in the following table: Table 3, Network Settings Static IP Identifies the fixed IP address assigned to the appliance by a system administra- tor. Netmask Identifies the subnetwork subdivision of an IP network. Gateway Identifies the address, or route, for the default gateway.

  • Page 16: Setting Configuration Tab Parameters

    Table 3, Network Settings (Continued) DHCP Enabled Indicates if the device is enabled to use DHCP. Reboot Appliance Allows you to save the network options and reboot the appliance. Setting Configuration Tab Parameters The easiest way to configure Nyquist appliances is to obtain configu- ration settings from the Nyquist server by selecting Get Configura- tion From Server.

  • Page 17: Figure 5, Appliance Configuration Settings

    Figure 5, Appliance Configuration Settings The following table describes the Configuration tab settings: Table 4, Configuration Settings Web Username Provide a web username for this appli- ance. Web Password Provide a web password for logging into the appliance. Web Confirm Pass- Re-enter the password used to log into the appliance.

  • Page 18: Accessing Log Files

    Table 4, Configuration Settings (Continued) Emergency-All-Call Identifies the IP address, port number, and volume used for emergency all-calls pages. All-Call Identifies the IP address, port number, and volume used for all-calls pages. Audio Distribution Identifies the IP address, port number, and volume used for audio distribution.

  • Page 19: Figure 6, Logs

    To view a log file: Step 1 On the appliance Web UI’s main page, select Logs. Step 2 From the drop-down menu, select the log that you want to view. Multiple versions of the same log and zipped copies of the log may be available.

  • Page 20: Table 6, Logs

    Table 6, Logs Description alternatives.log Contains information by the update-alternatives, which maintain symbolic links determining default com- mands. ampws.log Contains information about protection status and logs protection events with temperature information at the time of event. auth.log Contains system authorization information, including user logins and authentication methods that were used.

  • Page 21: Setting Dsp Parameters

    Table 6, Logs (Continued) Description wtmp Contains historical record of users logins at which ter- minals, logouts, system events, and current status of the system, and system boot time. wvdialconf.log Contains basic information about the modem port, speed, init string, and Internet Service Provider (ISP). Setting DSP Parameters When you select DSP from the appliance’s web UI, the DSP page appears.

  • Page 22: Table 7, Dsp Page

    From this page, you can adjust settings in the DSP. The appliance uses traditional processors (for example, Compressor, Noise Gate, Graphic Equalizer) for audio signals in the digital domain. Note that depending on how your appliance channels are config- ured, you could see two, three, or four Network channels. For instance, you could be operating Network channels 1 and 2 in single channel bridged mode.

  • Page 23: Setting The Channel Level

    Table 7, DSP Page (Continued) Noise Gate Eliminates low-level hiss, noise, or leakage, particularly when there is a high level of ambient noise. Parametric EQ Uses a center/primary frequency to allow tai- loring of the frequency content of an audio signal.

  • Page 24: Muting A Channel

    Muting a Channel You can mute a channel to cut off an audio signal and stop the pro- duction of sound. To mute a channel: Step 1 On the appliance Web UI’s main page, select DSP. Step 2 Select the Mute button for the channel that you want to silence.

  • Page 25: Figure 8, Compressor Settings

    Figure 8, Compressor Settings To adjust the compressor settings for a channel: Step 1 On the appliance Web UI’s main page, select DSP. Step 2 Select the Menu button for the channel. Step 3 From the drop-down menu, select Compressor. Step 4 Make desired adjustments using the controls described in "Compressor Settings”...

  • Page 26: Adjusting The Graphic Equalizer

    Table 8, Compressor Settings Decay Sets the rate of turn off of the compressor after the signal is below the threshold.he range is 0 to 2000 ms. Knee Sets how the compressor reacts to signals once the threshold is reached. Increasing the knee level decreases the obvious tran- sition from the uncompressed to the com- pressed sound.
  • Page 27 To adjust the graphic equalizer settings for a channel: Step 1 On the appliance Web UI’s main page, select DSP. Step 2 Select the Menu button for the channel. Step 3 From the drop-down menu, select Graphic EQ. The Graphic EQ provides 16 slider knobs that can be moved between +12 dB and -12 dB.

  • Page 28: Setting High/Low Pass Parameters

    Setting High/Low Pass Parameters You can set the band 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 10, High/Low Pass Parameters To adjust the high/low pass parameters for a channel: Step 1 On the appliance Web UI’s main page, select DSP.

  • Page 29: Table 9, High Pass/Low Pass Parameters

    Table 9, High Pass/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 microphone level input. It is partic- ularly effective when hand held microphones are used.
  • Page 30 Table 9, High Pass/Low Pass Parameters (Continued) 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 hand held microphones are used.

  • Page 31: Adjusting The Limiter

    Adjusting the Limiter A limiter is a compressor with a high slope that is used to prevent a signal exceeding a set decibel level. Limiters are used as safeguards against signal clipping. Limiter parameters are set per channel. Figure 11, Limiter Settings To adjust the limiter settings for a channel: Step 1 On the appliance Web UI’s main page, select DSP.

  • Page 32: Adjusting Noise Gate Settings

    Table 10, Limiter Settings (Continued) Decay Sets the rate for turn off of the limiter after the signal is below the threshold. Decay range is 5 to 2300 milliseconds. RMSTC Sets how fast the limiter reacts to the above threshold signal. RMSTC range is 50 to 10000.

  • Page 33: Adjusting Parametric Equalizer Settings

    Step 4 Adjust the following settings as needed: Table 11, Noise Gate Settings Threshold Sets the threshold level that the signal must be below for the noise gate to “close” (pre- vent the sound from getting through). Threshold range is -135 to +21 db. Attack Adjusts how long it takes for the gate to open once the signal falls below the thresh-...
  • Page 34 The parameter equalizer settings for your device allows you to adjust the Q and gain for seven separate frequencies, which then become plot points on the screen’s graph. To adjust the parametric equalizer settings for a channel: Step 1 On the appliance Web UI’s main page, select DSP. Step 2 Select the Menu button for the channel.

  • Page 35: Adjusting Router Settings

    6.11 Adjusting Router Settings Router settings allow you to specify where to output a signal. For example, you could have four speakers attached to the power ampli- fier that is operating in 4-channel mono mode and only want to route the signal to the first speaker.

  • Page 36: Settings

    Figure 15, Router for Single Channel Bridged Mode and 2 Mono Mode Channels To adjust the router settings: Step 1 On the appliance Web UI’s main page, select DSP. Step 2 Select the Menu button for the channel. Step 3 From the drop-down menu, select Router.

  • Page 37: Figure 16, Settings Parameters For 2 Channel Mono

    Figure 16, Settings Parameters for 2 Channel Mono For example, if Network 1 and 2 and Network 3 and 4 channels have been placed in Single Channel Bridged Mode, then only two Network channels appear. Figure 17, Settings Parameters for 2 Single Channel Bridged...

  • Page 38: Signal Present

    To adjust the settings for a channel: Step 1 On the appliance Web UI’s main page, select DSP. Step 2 Select the Menu button for the channel. Step 3 From the drop-down menu, select Settings. Step 4 For each channel, type the name that you want to dis- play for the channel.

  • Page 39: Figure 18, Signal Present Parameters

    Figure 18, Signal Present Parameters To adjust the Signal Present settings for a channel: Step 1 On the appliance Web UI’s main page, select DSP. Step 2 Select the Menu button for the channel. Step 3 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.

  • Page 40: Status

    6.14 Status The Status selection for the power amplifier provides real-time status of whether the amplifier switch positions are set for 2-channel mono or single channel bridged mode. This dialog box also provides LEDs for thermal protection and clipping and a real-time reading of the appliance’s temperature.

  • Page 41: Table 13, Status

    To view status for the power amplifier: Step 1 On the appliance Web UI’s main page, select DSP. Step 2 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: Table 13, Status Switch Position...

This manual is also suitable for:

Nq-a4120Nq-a4300

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