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Samson D2500 manual

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Table of contents for the manual

  • Page 1

    D I G I T A L D U A L 3 1 B A N D E Q U A L I Z A T I O N S Y S T E M[...]

  • Page 2

    Safety Instructions/Consignes de sécurité/Sicherheitsv orkehrungen/Instrucciones de seguridad ACHTUNG: Um die Gefahr eines Brandes oder Stromschlags zu verringern, sollten Sie dieses Gerät weder Regen noch F euchtigkeit aussetzen.Um die Gefahr eines Stromschlags zu verringern, sollten Sie weder Deckel noch Rückwand des Geräts ent- fernen. Im I[...]

  • Page 3

    Copyright 2004 - 2005. Samson T echnologies Corp. Printed September , 2005 v1.2 Samson T echnologies C orp. 575 Underhill Blvd. P .O. Bo x 9031 Syosset, NY 11791-9031 Phone: 1-800-3-SAMSON (1-800-372-6766) F ax: 516-364-3888 www.samsont ech.com T able of Conten ts Introduction 2 D2500 Fea tures 3 Contr ols and Functions 4 Fr ont Panel Lay out 4 Rea[...]

  • Page 4

    2 Congra tulations! Y ou just purchased one of the most innov ative and useful audio tools available to sound engineers today , the D2500 Digital Equalizer fr om Samson Audio! The D2500 is a dual channel, 1/3 Octave, 31 Band Digital Gr aphic Equalizer fea turing cutting edge DSP and analog-to -digital conversion technology , together with a simple [...]

  • Page 5

    3 D2500 F eatur es The Samson D2500 Digital Graphic Equaliz er utilizes state -of-the -ar t, DSP and filtering technology for precise t onal control . Here are some of its main featur es: • The D2500 is a stereo or tw o channel digital equalizer with each channel providing 31 bands of equalization, each frequency band representing 1/3 of an octav[...]

  • Page 6

    4 1 F ADER – 45mm LED fader for each of the 31 frequency bands, which can be soft ware set f or +/- 12 dB or +/- 6 dB , or +/- 3 dB of cut and boost. 2 ABOVE NULL LED – Red LED indicating the fader is below the null (matching) point. Note: the null point is the exact location where the fader's physical postion physical postion physical mat[...]

  • Page 7

    5 A POWER SWITCH – When set to the ON position the D2500 is power ed up and ready for operation. B MIDI IN DIN connector – The D2500 receiv es standard, or system ex clusive, MIDI data here . C MIDI OUT DIN connec tor - The D2500 transmits stan- dard, or sy stem exclusive, MIDI data her e. D MIDI THRU DIN c onnec tor - The D2500 passes standard[...]

  • Page 8

    4. The D2500 can be used either as an “in-line” device , as an insert device (in conjunction with mixer inser t points), or in an effects send-return loop . The illus- trations on pages 20 - 22 show each of these typical configurations . Choose the configuration that is best for your applica tion and then begin by mak ing the D2500 input connec[...]

  • Page 9

    SETTING UP THE D2500 to w ork in MANUAL mode ( continued) 7. Pr ess the rear panel Pow er switch to turn on the D2500. Note, if you are using the optional AI02 analog I/O board, the audio signal will be muted for approximately fiv e seconds until the relay power-on cir cuitr y is activated (at which time you’ll hear a click and the audio signal w[...]

  • Page 10

    8 GL OBAL The GL OBAL control allow s you to set up the various system parameters including the input , the equalizer filter band- width, filter range and the range of the Master F ader . The Global S witch Has Five Clicks! Click Menu F unc tion V alue 1 Inp. I nput Opt 1, Opt 2 2 Md. Mode Stereo , Dual 3 F .Bw F ilter Bandwidth 1/4 , 1/3, or 1/2 d[...]

  • Page 11

    9 T o change the M aster F ader ’ s attenuation range follow these steps: • Press the GL OBAL contr ol switch until you see the M.F .. • Use the Data Wheel to select the operating range of Master F ader . • T o keep the new changes, pr ess the STORE button and you will exit the GL OBAL mode and both the ST ORE and GL OBAL LED’ s will turn[...]

  • Page 12

    10 Using the D2500 in MANU AL Mode The D2500 can be used as a stand-alone basic digital signal processor using an y stored or recalled memory parameters when set to M ANUAL mode. If you w ant to use all the power pr ocessing of the D2500, but you don ’t want to recall or sa ve any presets , you can operate the unit in Manual mode. When you press [...]

  • Page 13

    11 W orking with the D2500 F aders Unlike menu driven, black box devic es, the D2500 is a digi- tal equalizer with standard 45 mm analog faders f or the 31 filter bands, plus the Master lev el fader for true analog control . I f you are oper ating the D2500 in Manual mode, the faders work exactly like you would expect on a stan- dard analog graphic[...]

  • Page 14

    12 Using the Pr ocess Switches Using the Pr ocess Switches In addition to being a great sounding , clinically precise, digital equalizer , the D2500 pr ovides a host of useful digi- tal effects, which hav e been designed to make an audio engineer’ s job easier and project sound better . Don't look for rev erbs and chorus effects here, just s[...]

  • Page 15

    13 • P ress the FBM switch and use the Data Wheel to and • P ress the FBM switch and use the Data Wheel to and select FBM: ON. • Now , engage the effect by pressing the IN / OUT switch until the yellow LED lights . • T o access the F eedback Sensitivity parameter , press the FBM switch until you see the menu , S ensitivity . The F eedback S[...]

  • Page 16

    14 Once the highs return, the Enhance r eleases automatically . Of course the D2500 let ’ s you dial up just the right amount of Enhancer for y our project, so follow the steps below to activate the Enhancer . • Pr ess the ENHANCER switch so that the yellow LED is lit. • Engage the effect by pressing the IN / OUT switch un til the yellow LED [...]

  • Page 17

    15 Opera ting the D2500 Using the Int ernal LIMITER for Basic Speaker Protection In order to help you pr otec t your speaker system, the D2500 employs a digital Limiter . T he D2500's Limiter is a brick wall type with a very fast attack time and a ver y slow release time. When engaged, the dig ital Limiter will pre - vent signals fr om reachin[...]

  • Page 18

    16 Storing Pr ograms in the D2500 The D2500 has 99 memory locations (labeled 01-99) for storing user presets. Y ou can save the equalization curve, as well as all the parameters f or the routing and the onboard effects that may be active . Saving the preset is a simple procedur e which is accomplished with the follow- ing easy steps. • Press the [...]

  • Page 19

    17 Opera ting the D2500 MIDI and D Net F or expanded system control, the D2500 uses standar d MIDI, as well as Samson ’ s D Net communica tion protocols, to transmit and rec eive digital control inf or mation to and from additional D class units, other MIDI devic es, or per- sonal computers. Y ou can use standard MIDI cables for IN, OUT and THRU [...]

  • Page 20

    18 Selecting MIDI Omni mo de Y ou can program the D2500 to receiv e MIDI messages in Omni mode by follo wing the nex t steps. • Press the MIDI swit ch until that L CD reads OMNI. • Use the Data Wheel to select Omni ON. • T o keep the new changes, pr ess the STORE button and you will exit the MIDI mode and both the ST ORE and MIDI the LED’ s[...]

  • Page 21

    19 When you use the D1500 RT A and the D2500 digital EQ together they combine to cr eate a powerful automatic equalization system. Y ou simply connect the two units using D-Net or MIDI, and then the D1500’ s A UTO EQ featur e to let the onboard DSP ’ s measure your system response and adjust the equalizer f or a flat response, or for an y EQ re[...]

  • Page 22

    20 Using A UT O EQ with the D2500 Digital Equalizer When you use the D1500 RT A and the D2500 digital EQ together they combine to cr eate a powerful automatic equalization system. Y ou simply connect the two units using D-Net or MIDI, connect a high qualit y measurement microphone, like the Samson MM01, and then use the D1500’ s AUT O EQ feature [...]

  • Page 23

    21 Using the D1500 with the D2500 In order for the D1500 and D2500 to c ommunicate with each other it is necessary to configure the MIDI param- eters so that the units are c ommunicating properly . Follow the steps below to c onfigure the MIDI parameters for communication between one D1500 RT A and one D2500 Digital EQ . Let's start with the D[...]

  • Page 24

    22 Using the D1500’ s EQ Display The D1500 can be used to display the equaliza tion cur ve from 1, or up to 15, D2500 Digital E qualizers using the standard MIDI or optional D-Net interface. Before you get started using the EQ display feature, press and hold the EQ switch for about two seconds and take notice of the paramet ers that can be adjust[...]

  • Page 25

    23 • Now run your mic , MP3, or CD player signal, press RT A on the D1500 and check the L CD M eters on the D1500. • While the D1500 is set to RT A, you ma y need to adjust the GAIN to set the ref erence point of the display . Once you confirm that the sy stem is operating normally and that the RT A can read the system response with the test mi[...]

  • Page 26

    24 S ystem C onfigur ations Using the D2500 with A c tive Speakers In this example, the mix er ’ s stereo output is connected to the D2500’ s inputs. Then, the D2500’ s outputs are connected to the inputs of each active (self-powered) loudspeak er. Using the D2500 with P assive Speakers In this example the mixer’ s stereo output is connecte[...]

  • Page 27

    S ystem C onfigur ations 25 Using the D2500 for Mains and Monit ors Using the D2500 into Insert P oints Y ou c an use the D2500 in your mixer’ s inser t points if you want to equalize two mono channels individually in the mix. In this example the D2500’ s Channel 1 INPUT and OUTPUT are inserted on a bass guitar channel using a 1/4-inch TRS to 2[...]

  • Page 28

    26 S ystem C onfigur ations Using T wo D2500’ s for Mains and Monitors In this example, two D2500’ s are used f or the stereo main and for the 2-channel monitor mix. The mixer ’ s left and right outputs are connected to the first D2500’ s inputs for the main P A speakers . Then, the outputs are connected to the inputs of the power amplifier[...]

  • Page 29

    D2500 W iring Guide D2500 Wiring Guide There ar e several ways to in ter face the D2500, depending on your exact monitoring set-up. F ollow the cable diagrams below f or connecting your monitor system. 27        [...]

  • Page 30

    28 Specifications Inputs T ype electronically balanced Connector XLR Impedance 22 kΩ at 1 kHz Max. input level +22 AIO1: +14dBu AIO2: +20dBu Outputs T ype electronically balanced Connector XLR Impedance 100 Ohms at 1 kHz Max. output level AIO1: +14dBu AIO2: +20dBu Fr equenc y Response 10 Hz to 35 kHz (-1dB) @ 96 kHz sampling rate Signal-to-noise -[...]

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  • Page 32

    Samson T echnologies Corp . 575 Underhill Blvd. P .O. Bo x 9031 Syosset, N Y 11791-9031 Phone: 1-800-3-SAMSON (1-800-372-6766) F ax: 516-364-3888 ww w .samsontech.com[...]