Telex DOC02-DN9848, DN9848 Loudspeaker Processor specifications Application Notes

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Application Notes

DN9848 is caused by the use of sigma-delta converters for both analogue-to-digital and digital-to analogue conversion (the competitor unit uses a different method of digital-to-analogue conversion), which allows the DN9848 to achieve its superior dynamic range.

In order to prevent driver failure, the competitor product’s limiter threshold needs to be reduced such that the peak of the transient is at the same level as the threshold of the DN9848’s look-ahead limiter, with a major effect on efficiency of speaker systems, as the effect of reducing the limiter threshold is to limit the amount of continuous output power available, which means more amplifiers and more speaker cabinets to achieve the same SPL. In the example below the competing unit’s limiter threshold has been reduced so that level of the transient peak matches the threshold of the DN9848’s limiter:-

The limiter threshold of the competitor’s unit has been lowered to -10.0 dBu to avoid the risk of driver damage from the initial transient, at the cost of greatly reducing the efficiency of the PA system. The look-ahead capability of the DN9848’s limiters allows the thresholds to be set at the levels required to protect the loudspeaker drivers, without the need to be concerned about transients being passed by the limiters. This allows the PA system performance to be maximised by safely exploiting the full operational range of the loudspeaker drivers.

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Contents Page Page Important Safety Instructions Page Declaration of Conformity Page Contents Technical Specification Safety Warning Installation ConsiderationsAfter Unpacking Page DN9848 Key Features Introducing the DN9848Controls, Connectors, Indicators Front PanelRear Panel Programming Settings DN9848 Menu SystemDN9848 Programming Panel Navigating the DN9848 MenusSet Up Menu Store and RecallHome DN9848 Menu Map Setting Input Parameters Input ChannelsBrief Technical Overview Input ChannelsGain and Delay To set the delayTo adjust the gain Parametric Equalisation Pages 2 toMonitoring the Input Signal To switch the compressor out of the circuitCompression To set the compressor parametersOutput Channels Output ChannelsSetting Output Parameters To access the Output menu pages for a particular channelNaming the Output Channel RoutingSignal Invert, Delay and Output Level Phase Adjustment Pages 4To invert the output signal To set a precise phase shift at a reference frequencyTo apply a ‘shaped’ phase transition at a chosen frequency High Pass and Low Pass Filters Pages 6To add a high/low pass filter to output processing To bypass the high/low pass filter processingParametric Equalisation Pages 2 to Monitoring the Output Signal To switch the limiter out of the circuitOutput Limiter To set the limiter parametersOutput Gain and Mute Front Panel Control Security and other Set Up Options Security Settings Pages 2General Remote Comms ChannelWhen System Protect is on System ProtectTo set a Panel Lock To remove the Panel LockTo switch System Protect on To switch System Protect offTo adjust the lighting LCD LightingDelay Options Power Up OptionsTo change the units of measurement Using the DN9848 Memories Storing and Recalling SettingsTo store settings To lock the system memories, refer to .3 Security SettingsTo recall stored settings from memory Press the black Recall button to access the Recall menuRemote Control Setup DN9848 Remote Control SetupTo disable remote control DN9848 Connection Laptop/PC Cable /Converter RequiredRS-485 input to rear panel Application Notes Advantage of DN9848 Look-Ahead LimitersApplication Notes Application Notes Phase-adjustment with the DN9848 Audio Precision Deg phase shift @ 20, 300, 1K, 20K 01/19/01Audio 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 Factory Presets for X-Line Series Memory Out Identification 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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