Dynacord DSP 244 owner manual R a M E T E R S

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P A R A M E T E R S

Gain sets the degree of amplification or attenuation of the parametric EQ or the low shelving and high shelving equalizers. The setting is performed in steps with 1 dB-stepwidth.

The Slope parameter describes the steepness or order of the filter for the low shelving or high shelving equalizers.

By setting the low shelving equalizer’s slope to 12 dB and the filter frequency to the resonance frequency of the loudspeaker cabinet, the Slope parameter also lets you create a special LPN filter (Low Pass Notch filter). This is possible, since the frequency response of speaker cabinets’ lower frequencies drops by 12 dB/oct., starting from their resonance frequency. A LPN filter compensates and shifts this polarization in the transmission down towards lower frequencies. The picture below shows typical frequency responses of a cabinet with LPN filter (A) and one without LPN filter (B).

Slope also describes the filter curve of the Lo-Pass and Hi-Pass filters. Different slope settings for the transition band are possible. Together with the Q-parameter this provides the possibility to program the Hi-Pass filter for so called B6-alignment; i. e. an increase in the response in the cutoff frequency range.

The Order parameter determines whether a 1st order or 2nd order Allpass filter is used. A 1st order Allpass filter shifts the phase by 180° and its cutoff frequency is 90°. A 2nd order Allpass filter shifts the phase by 360° and its cutoff frequency is 180°. Additionally, a 2nd order Allpass filter provides the Q-parameter (quality) which allows setting the phase response of the transition range (lower Q-settings result in flat phase response while higher Q-settings produce a steeper phase response; see also examples).

Examples for the settings of different filter types are provided in the paragraph MASTER EQ1-5. You are also able to program your own settings of the DSP 244 via PC or notebook computer and monitor the resulting frequency response on the computer screen. The following example shows the phase response of Allpass filters with different parameter settings.

ALLPASS: f = 1kHz, Order = 1st, 2nd Q = 0.7, 1.0, 2.0

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Contents DSP Safety Component has to be Replaced with Original Part only For US and Canada onlyContents Introduction DSP 244 FeaturesUnpacking and Warranty IntroductionControls and Connections Controls and ConnectionsFront Panel 15, Compressor indicators Output 1 13, Channel function indicators SUB, LO, MID, HI14, Level meter indicators Output 1 16, Power ON/OFF-switchRear Panel Balanced INPUT/OUTPUT configuration Installation and ConnectionsInstallation and Connections Unbalanced INPUT/OUTPUT configurationFirst Operation Switching the Power onLevel Settings First OperationQuick Start Quick StartOver Settings Delay AlignmentLoudspeaker Equalization Compressor / Limiter Settings Matching the Frequency ResponseConfigurations of the DSP Configurations of the DSPFull Edit N Figurations of the DSP Stereo 2 Way3 Way + Fullrange 3 Way / Mono Sub + Fullrange3 Way / Independent Sub + Fullrange 4 Way2-IN-4 E R a T I O N OperationEditing E R a T I O N Store Programs and Program Names Modifying Factory Preset Programs R a M E T E R S ParametersParameter Access Parameter ACCESS-TABLEDescription of Parameters DefaultParameter LINK-TABLE Master EQ1-5PEQ = 1kHz, Gain = -12dB Master Delay RoutingChannel EQ1-4 R a M E T E R S Hipass X-OVER Lopass X-OVERR a M E T E R S Channel Delay Compressor Limiter LevelT I O N Setting the LCD ContrastEdit Mode Selection Option FunctionsVU Level Meter Display Mode Compressor and Limiter Threshold UnitEdit Protection Celsius Temperature Unit settingsMidi RX / TX Channel settings FahrenheitTo RS232 Send ParametersTo Midi RS-232 to Midi data transmissionNRS 90246 Contact Closure Interface settings PGM U01 NRS 90247 RS-485 Interface SettingsCntct PGM MuteSpecifications Technical SpecificationsPeci F I C a T IO N S Midi General Midi CommandsIDI Midi System Exclusive ImplementationData Command Parser Code Table Installation instructions NRS Retrofitting InstructionsRetrofitting Instructions Installation manuals for interface cards Blockdiagramm / Block Diagram Flussdiagramm / Flow Diagram Abmessungen / Dimensions Warranty Garantie