Telex DN9848 Loudspeaker Processor, DOC02-DN9848 Input Channels, Brief Technical Overview

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Input Channels

5.INPUT CHANNELS

5.1. Brief Technical Overview

Referring to the illustration below, each input channel of the DN9848 processes the audio signal through delay and gain stages, followed by 12 bands of parametric equalisation, and a full-band compressor. All key stages are monitored for signal clipping which, if detected, lights the top red segment at the top of the input signal meter; thus clipping of the signal during processing is not inadvertently missed. In addition, the signal level is monitored at the compressor to provide signal head room and gain reduction indications at the meter.

5.2. Setting Input Parameters

5.2.1The Input Menu

The signal processing for each input channel is programmed independently via the separate Input menu associated with each channel. The signal processing parameters are described below in menu order.

To access the Input menu pages for a particular channel

1Press its yellow MENU ACCESS button (A – D) to switch to its menu.

2Press the button repeatedly to step through the pages in turn. Note that, after the last page, the next button press will cycle the menu back to the first page.

To skip across to the same parameter on another input, press its MENU ACCESS button.

5.2.2Naming the Input Channel (Page 1)

Each input channel can be allocated a name up to 7 characters long, which will be shown in the first page of the menu for easy reference. The default names are Input A, Input B, etc. Names are retained after power down and are included in stored settings.

To enter a name

User defined channel name

1Turn the left-hand knob clockwise to access the Input Name sub-menu page.

2Use the centre knob to move the cursor right or left, and the right-hand knob to select the letter, number or symbol.

3On completion, turn the left-hand knob anti-clockwise to go back to the main page. The new name is now shown to the left of the menu page.

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Contents Page Page Important Safety Instructions Page Declaration of Conformity Page Contents Technical Specification After Unpacking Safety WarningInstallation Considerations Page Introducing the DN9848 DN9848 Key FeaturesFront Panel Controls, Connectors, IndicatorsRear Panel DN9848 Menu System Programming SettingsDN9848 Programming Panel Navigating the DN9848 MenusHome Set Up MenuStore and Recall DN9848 Menu Map Input Channels Setting Input ParametersBrief Technical Overview Input ChannelsTo set the delay Gain and DelayTo adjust the gain Parametric Equalisation Pages 2 toTo switch the compressor out of the circuit Monitoring the Input SignalCompression To set the compressor parametersOutput Channels Output ChannelsTo access the Output menu pages for a particular channel Setting Output ParametersNaming the Output Channel RoutingPhase Adjustment Pages 4 Signal Invert, Delay and Output LevelTo invert the output signal To set a precise phase shift at a reference frequencyHigh Pass and Low Pass Filters Pages 6 To apply a ‘shaped’ phase transition at a chosen frequencyTo add a high/low pass filter to output processing To bypass the high/low pass filter processingParametric Equalisation Pages 2 to To switch the limiter out of the circuit Monitoring the Output SignalOutput Limiter To set the limiter parametersOutput Gain and Mute Front Panel Control Security Settings Pages 2 Security and other Set Up OptionsGeneral Remote Comms ChannelSystem Protect When System Protect is onTo set a Panel Lock To remove the Panel LockTo switch System Protect off To switch System Protect onTo adjust the lighting LCD LightingTo change the units of measurement Delay OptionsPower Up Options Storing and Recalling Settings Using the DN9848 MemoriesTo store settings To lock the system memories, refer to .3 Security SettingsPress the black Recall button to access the Recall menu To recall stored settings from memoryDN9848 Remote Control Setup Remote Control SetupRS-485 input to rear panel To disable remote controlDN9848 Connection Laptop/PC Cable /Converter Required Application Notes Application NotesAdvantage of DN9848 Look-Ahead Limiters Application Notes Audio Precision Deg phase shift @ 20, 300, 1K, 20K 01/19/01 Phase-adjustment with the DN9848Audio Precision 1st order allpass @ 300, 1K, 10K 01/19/01 Technical Specification Technical SpecificationPower Requirements Factory Presets for X-Array Series Memory Out Identification P08 XI1122/85 4MIX R1-2 Memory Out Identification Factory Presets for X-Line Series Memory Out Identification

DOC02-DN9848, DN9848 Loudspeaker Processor specifications

The Telex DOC02-DN9848, commonly referred to as the DN9848 Loudspeaker Processor, is an advanced audio processing device designed to enhance sound quality in both live and recorded environments. With a sleek and modern design, the DN9848 is engineered to meet the demanding needs of professional audio applications, be it in concert venues, theaters, or broadcast studios.

One of the key features of the DN9848 is its comprehensive processing capabilities. Equipped with a powerful DSP (digital signal processing) engine, it offers extensive equalization options, dynamic range control, and advanced crossover functionality. The device utilizes up to 48 input and output channels, allowing for unparalleled flexibility in routing audio signals. This makes it ideal for installations that require precise control over multiple loudspeakers.

The DN9848 also boasts an intuitive user interface, which facilitates straightforward navigation through its various functions. The front panel features a large LCD display that provides clear visibility of parameters, and a selection of knobs and buttons enables easy adjustments. For remote operation, the device can be controlled via Ethernet, allowing technicians to make changes from virtually any location.

Another standout aspect of the DN9848 is its customizable algorithms that accommodate different speaker systems and acoustical environments. Users can fine-tune the processor to optimize performance for specific venues or loudspeakers. The device supports both FIR (finite impulse response) and IIR (infinite impulse response) filters, providing users with the flexibility to deploy advanced filtering techniques according to their needs.

The DN9848’s robust connectivity options further enhance its utility. It features standard analog XLR connectors, as well as digital interfaces that include AES/EBU and Dante. This multi-format compatibility ensures seamless integration into existing audio setups, making it a versatile choice for audio professionals.

In terms of reliability and durability, the DN9848 is built to withstand the rigors of the professional audio world. Its rugged chassis and high-quality components ensure that it can perform consistently in various conditions, making it a trusted partner for sound engineers.

In summary, the Telex DOC02-DN9848 Loudspeaker Processor combines sophisticated audio processing capabilities with user-friendly features and robust connectivity. Its advanced technology and flexible options make it an indispensable tool for achieving optimal sound in a variety of professional audio environments.
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