Output Channels

6.2.7Parametric Equalisation (Pages 2 to 13)

The DN9848 provides six parametric equalisation stages on each output channel, for equalising the output signal in respect of loudspeaker and/or system characteristics. The first and last of these PEQ sections can be alternatively be configured for lower and upper shelving equalisation. All the PEQ sections can be used across the full range from 20Hz to 20kHz and are set independently via their own menu page.

Any PEQ can be used as the reference frequency for the Phase Shifter (see Section 6.2.5)

To set a PEQ

1Set a centre frequency (21 steps per octave) and bandwidth (0.08 to 3 Oct) for the PEQ section, using the left and centre knobs, respectively.

or

Switch to an LEQ/HEQ setting with a 6dB or 12db slope by turning the centre knob clockwise beyond 3 Oct (see below). Use the left-hand knob to set the LEQ/HEQ frequency.

2Turn the right-hand knob to set an attention/boost level between -12dB and +12dB.

If a PEQ section is not needed in the set up, set its level to 0dB.

6.2.8Compression (Page 14)

Each output has an independent full range compressor to improve the audio dynamics and/or reduce louder signal levels to avoid loudspeaker damage. The compressors are variable ratio and can be set to a hard knee characteristic for a sharp gain reduction response at the compression threshold, or soft knee for a more ‘musical’ response.

To set the compressor parameters

1On the first compressor menu page, use the centre knob to select a threshold value in the range –10dB to +21dB, and the right-hand knob to set a ratio from 1:1 to 5:1.

2Turn the left-hand knob clockwise to access the first sub- menu page. Use the centre knob to select a hard or soft knee characteristic and the right-hand knob to set the bypass state to No so that the compressor is included in the signal path. The relative position of the compressor threshold to the limiter threshold will be indicated by a lit segment at the meter (provided the compressor threshold is below the limiter threshold).

Lit segment shows the compressor position relative to the limiter threshold

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Telex DOC02-DN9848, DN9848 Loudspeaker Processor specifications Parametric Equalisation Pages 2 to
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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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