The information in this document is subject to change without notice. LA Audio makes no warranty of any kind with respect to the material in this document and shall not be liable for errors contained herein or for incidental or consequential damages related to the use of the material.
Thank You. By buying this DLX200 series processor, you have joined the ranks of the thousands of professional engineers, installers and musicians who choose LA Audio. We hope your DLX200 series processor brings you many years of enjoyable DSP system management.
Safety Information. WARNING THIS EQUIPMENT MUST BE EARTHED. DO NOT EXPOSE TO RAIN OR MOISTURE. Please read carefully and keep the following instructions and safety information. Heed all warnings and follow all instructions. • Do not remove covers. There are no user serviceable parts inside, please refer servicing to qualified service personnel.
STORE CHANNEL LIMIT LIMIT LIMIT LIMIT LIMIT LIMIT +4dB -6dB -6dB -6dB -6dB -6dB -6dB LA Audio DLX260 MUTE MUTE MUTE MUTE MUTE MUTE < < RECALL PARAMETER 1 ! Mono A U D I O DLX 260 Parameter Output Mute...
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LED will light when the limiter threshold is reached. MUTES Each output has a mute button and associated status LED. Note that the mute buttons do not function when the Secure mode is activated. See below for details of Secure mode.
Inputs POWER INLET The LA Audio DLX200 series unit should be connected to a suitable mains electricity supply using the cable supplied. The processor has a switch mode power supply that is capable of operating with a nominal mains voltage of 85V to 240V, 50/60Hz without re-configuration.
Operation. The unit will power up as soon as power is applied to the IEC inlet as there is no power switch. During the start up process the firmware application model number and version numbers are displayed and the outputs are muted until the unit has completed its internal checks – this should take around 5-10 seconds.
BASE PRESETS The unit has two ‘Base Presets’, mono and stereo. These are empty templates from which you can quickly configure your own settings. They are stored in locations 1 and 2 respectively. Although the base presets are locked and cannot be overwritten, you can edit a base preset to your heart’s content and then store your new settings into any unlocked location (i.e.
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Preset Name Recall 32 My System DLX 260 Select preset Really, really Sure? to recall. sure? STORE STORE STORE Recalling a preset will clear the currently loaded settings. To keep these, or save changes to an existing preset, first store them, as described above, before attempting to recall another preset. Inappropriate crossover settings for a given system can cause expensive, sometimes irreparable damage to attached devices such as amplifiers and loudspeakers.
Digital Signal Processing. INPUT DSP BLOCK DIAGRAM Low Shelf 6 x Parametric EQ High Shelf Delay Input METERS Gain +4dB Sum (-6dB) Routing Low Shelf 6 x Parametric EQ High Shelf Delay Input METERS Gain +4dB OUTPUT DSP BLOCK DIAGRAM Routing Low Shelf 6 x Parametric EQ...
DSP Controls This section describes each of the DSP modules and its controls. As you can see from the diagram above, some modules are common to both inputs and outputs, while some are specific to one or the other. Consequently, this section describes all DSP functions, with notes where they are channel-specific.
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HIGH AND LOW PASS FILTERS (LPF ON OUTPUT ONLY) Out 1 Freq Shape 100Hz LR24 DLX 260 • F1: Frequency, <<out, 10.0Hz to 25.6kHz, out>> • F2: Filter shape/slope. The bottom left hand corner of the display will indicate whether the filter is high or low pass. As you can see from the diagram above, input channels have one high pass filter while outputs have one high and one low pass.
HIGH AND LOW SHELVING FILTERS Out 1 Freq Slope Gain EQ>- 100Hz 12dB 0.0dB DLX 260 • F1: Frequency, 10.0Hz to 25.6kHz in variable steps • F2: Slope, 6 to 12dB / octave in 1dB steps • F3: Gain, +/-15dB in 0.2dB steps The frequency shown is the ‘turnover’...
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IMPORTING PARAMETRIC EQ SETTINGS Care should be taken when importing the EQ settings from other speaker management units as the results may not be quite what you expect. This is because the 3 parameters of Frequency, Boost/Cut and Q (or Octave Bandwidth) do not give a complete definition of the actual filter shape. Although Frequency and Boost/Cut are absolute values, Q (or Octave Bandwidth) is generally only correct at one Boost/Cut setting.
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LIMITERS (OUTPUTS ONLY) Out1 Thresh 4.0dB DLX 260 • F1: Threshold, -40dBu to 20dBu in 0.2dB steps A high performance, low distortion limiter is provided on each output. Threshold is user adjustable; all other parameters are carefully calculated dependant on configuration to provide clean and effective control of signal dynamics.
Utilities UTILITY FUNCTIONS Two utility pages are provided to adjust infrequently used settings. These can be found by pressing the channel buttons until you pass the last output or before input 1. Util Screen ParaEQ 100% BW=Q DLX 260 Utility page 1 sets system-wide display parameters. Screen contrast allows you to adjust the display for different viewing angles.
Quick Reference. INPUT DSP BLOCK DIAGRAM Low Shelf 6 x Parametric EQ High Shelf Delay Input METERS Gain +4dB Sum (-6dB) Routing Low Shelf 6 x Parametric EQ High Shelf Delay Input METERS Gain +4dB OUTPUT DSP BLOCK DIAGRAM Routing Low Shelf 6 x Parametric EQ High Shelf...
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Utilities 2 Preset Mono or Stereo. Format TO RECALL A PRESET: • Ensure that any current unsaved settings are stored. • Press [Recall]. • Use knob F1 to select a preset. • Press [Recall] to select the preset, and [Recall] again if you’re certain. Base presets “Mono”...
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