DN9848E Architect's & Engineer's Specification

The Loudspeaker Processor shall provide four analogue and four digital input channels and eight output channels with fully featured matrix mixing in a standard 1U 19” rack mount chassis.

Each input channel shall include: input name, input gain control, input source select (analogue or digital), delay up to one second, eight parametric EQ stages (+6 dB boost, -18 dB cut) and a compressor.

Digital inputs shall run at any sample rate up to 96kHz with internal sample rate conversion. The sample rate converter can be bypassed when the incoming digital signal has a sample rate of 48kHz.

Each output channel shall include: output name; configurable routing; delay up to 300 milliseconds; two cascaded all-pass phase correction filters, low and high pass crossover filters with slopes of 6, 12, 18, 24, 36 and 48 dB per octave and options of Linkwitz-Riley, Butterworth and Bessel characteristics where appropriate; six parametric EQ sections with up to 12 dB of cut or boost (optionally two of these stages are configurable as low frequency and high frequency shelf filters respectively); a phase invert function; an output level control; and a compressor and a limiter.

All delay times shall be set in milliseconds and microseconds, or in distance units (metric and imperial) with a temperature correction facility.

Each Loudspeaker Processor shall meet or exceed the following performance specifications:

Frequency response +/- 0.3dB (20Hz to 20kHz)
Distortion (THD+N) <0.02% @ 1kHz, +8dBu
Dynamic Range >114dB (20Hz to 20kHz unweighted)

All analogue inputs and outputs shall be electronically balanced and use XLR connectors. All digital inputs shall be 110Ω AES/EBU and use XLR connectors. All parameters shall be displayed and adjusted via an alphanumeric LCD display, three rotary encoders and individual menu buttons for each input and output channel.

There shall be provision for six user memories and in addition 32 system memories and 99 factory presets with a security lock-out feature. There shall also be a security lock-out feature that is enabled when the unit is under remote control.

The Loudspeaker Processor shall be provided with an RS-232 and Ethernet ports for remote control and software updates. The Loudspeaker Processor shall be controllable from the ELGAR remote control PC software

The unit shall be capable of operating from a 100V to 240V, ±10%.

The Loudspeaker Processor shall be the KLARK TEKNIK model DN9848E and no alternative option is available.

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