RACE Software (Realtime Acoustic Cluster Editor)
RACE software is EVs professional audio solution for modeling the response of loudspeaker systems both simple and complex within specific venue measurements, and for digitally controlling such systems through the Dx38. RACE enables engineers to seamlessly integrate room influence, speaker positioning, and parameter settings, and RACE system presets guarantee a solid, accurate basis from which to begin system tuning. EV obtains specific acoustic data for all of its speakers by measuring each speaker separately in its large anechoic chamber and saving the information in a RACE-specific file. The user assigns individual components to RACE outputs using these files, and applies desired filter, delay, and level settings. RACE then calculates the complex summation of all settings applied to the components. At a glance, then, RACE users can view not only each components (and the systems) electrical filter response, but also its true acoustic response! Any changes in parameters are immediately visible and audible. As well, RACE can display SPL dispersion for lower frequencies. System presets can be prepared offline in advance. The user can employ one of the 50 preinstalled presets, or customize one from individual component files. Systems prepared in this way need only a little tweaking once speakers are in place. RACE makes quick setups a snap!
This example shows the Magnified Frequency Response window for a system that includes an EV Xi1183/64 plus an EV Xi2181 4-way. Any parameter changes, such as level, filter or delay tweaks, display immediately. Even very complex array settings can be tuned simply and accurately.
Dx38 Digital Sound System Controller with exclusive RACE software!
EV's Dx38 digital sound system processor sets new standards for digital sound processing, with a dynamic range in excess of 115 dB, multiple filter functions, and exclusive RACE (Realtime Acoustic Cluster Editor) software.

Versatile Applications

With its 2-in/4-out architecture, the Dx38 is the perfect system controller for multi-way loudspeaker arrays. It also works perfectly for signal distribution in larger sound systems with delay lines, since it allows the sum of inputs A&B to act as a virtual third input. And one central PC can control as many as 31 units (up to 3,930 feet away) through RS-232, MIDI, or (optional) RS-485 interfaces.

Configuration window

The clearly organized Configuration window allows the user to name each output for its connected speaker. Space is provided for adding notes, and additional windows allow access to filter and delay settings.
The Dx38s optional contact closure interface allows remote switching of presets or muting. The Dx38 comes with 50 factory presets for EV speaker systems and can store another 30 user presets. The Dx38 is always shipped with the latest version of RACE software, but its easy to upgrade or try RACE out RACE is available as a free download at www.electrovoice.com.
Easy Operation without a PC
No computer available? The Dx38 can be easily used without one. A clearly arranged graphic display helps in editing all parameters. Four LEDs monitor the status of each output (Sub, Low, Mid, Hi, or any combination) for quick output assignment. The output level control pots are push pots that send dedicated output information directly to the display for editing. And the Dx38 can be locked to prevent unauthorized changes.

Documentation

Full documentation of up to seven pages can be printed. Printed information includes listings of all parameters, as well as all filter and frequency responses for the EV speakers used in the system.
RACE (Realtime Acoustic Cluster Editor)
In the Speaker window, RACE displays a complete systems acoustical response by assigning each speakers acoustical data (phase and magnitude) to the appropriate output. The data is measured in a free field, and all influences of filter functions, levels and delay settings are then calculated. RACE thus displays the systems acoustical response including all parameters used on the Dx38, but without any room influence in realtime. The Speaker window works exclusively with EV speaker systems and helps optimize the use of all digital parameter functions.
In this example of a 4-way system (an EV Xi-1183 3-way with an EV Xi-2181 sub), RACEs X-Over window clearly displays each outputs filter functions, including master and channel EQ settings. Resolution can be set at 12 dB, 24 dB, or 48 dB, and its easy to toggle between frequency and phase response. Although the output from other speakers in the system can be excluded from the view, the example uses all four outputs. (This slightly complex example shows a combination of conventional crossovers with a wide overlap between Sub (Xi-2181) and Lo (Xi-1183 LF) inputs).
The example shows the electrical transfer function of the Dx38 for this system through the complex summation of its filters, levels, and delays.
It is difficult to derive any idea of the sound quality from the previous window. But once the acoustical data of the raw components and amplifiers is added, the window displays the systems real acoustical response according to the actual parameter settings. Parameter alterations are immediately visible and audible. RACE, an industry first, is therefore unique in that it can show the true frequency response of EV components in realtime as they behave in a free field. With all system data and parameters entered, the user can understand how the system will perform independently of any room influence.
Dx38 THE NEW STANDARD IN DIGITAL SOUND PROCESSING EV's Dx38 digital sound system processor sets new standards for digital sound processing, with a dynamic range in excess of 115 dB, multiple filter functions, and exclusive RACE (Realtime Acoustic Cluster Editor) software.

Signal Flow Window

RACE's signal flow window provides a clear overview of all available parameters. Five master equalizers are available per input immediately after input metering. Each of these filters can be set as a hi- or lo-pass filter (6 dB/12 dB peak), as a hi- or lo-shelf filter (6/12 dB), or as a full parametric equalizer. A green LED symbol indicates whether each filter is activated. The master delay allows each input or the sum of both inputs to be delayed separately up to 900ms. Fully flexible routing allows each input or the sum of both inputs to be routed to any of the four outputs. Each of the four filters per output provide the same filter functions as the master equalizers, as well as an all-pass filter for phase corrections. The crossover section provides a hi- or lo-pass filter for each channel and an output delay for alignment. The dynamics section provides independent compressors and limiters to ensure speaker protection. The output meter display works like the whole editor in realtime. Level control and mute are available for each channel. You don't need a PC to use the Dx38! The Dx38s parameters can all easily be edited on the front control panel. Once you try RACE software, however, you may never again want to work without it!

Applications

Signal matrix

(MONO) (MONO)

3 in 8
DELAY 2 SIDEFILL MIX R MIX L

PATENTED 3840551

BUCHANAN, MICHIGAN

(LEFT) (MONO)

HI MID LO SUB1 MONO MIX L
PATENTED 3840551 MADE IN GERMANY

MADE IN GERMANY

FUSE T0.8A 250 V 90-250 V ac, 50-60 Hz 30 W

THRU MIDI

IN OUT 4 OUT 3 OUT 2 OUT 1

170086

IN 2 RIGHT

IN 1 LEFT/ MONO

OUT N378

DELAY 1 NEARFILL

Stereo 4-way

(LEFT)

HI MID LO SUB 2 MIX L

(RIGHT) (MONO)

HI MID LO SUB

Stereo 2-way

(RIGHT)

HI LO HI

BUCHANAN, MICHIGAN BUCHANAN, MICHIGAN

MIX R MIX L

MADE IN GERMANY PATENTED 3840551 MADE IN GERMANY

HI MID LOW SUB

RACE Networks Control up to 124 Outputs
With the Dx38s optional RS-485 interface, RACE software permits control of large, complex speaker systems of up to 124 outputs. Access to complex networks is provided either by exchanging the factory-installed RS-232 interface with an optional RS-485 interface, or by connecting a DCN-485 converter (RS232 to RS-485) to the PCs COM port. The RS-485 and the DCN-485 both provide XLR connector output. The DCN-485 requires no power supply. With conventional microphone cables, units can be controlled over distances up to 655 feet. CAT-5 cabling allows control over control distances up to 3,930 feet. Realtime monitoring of all parameters including frequency response, input and output metering, and compressor/limiter thresholds provides a complete, up-to-the-second visual overview of the system.

DCN 485 Converter

RS-485 Interface
Network control is so easy and intuitive It`s like the controllers are in a side rack just an arms length away! Flexible, easy-to-use, and stable, RACE took several years to develop. It incorporates the suggestions of many audio professionals and active sound engineers. Every time a parameter is changed, a message asks the user to confirm that the change is intentional. Systems can be viewed in Live Mode or Setup Mode. Live Mode displays all units, includes realtime input and output metering, and allows mute and level adjustments just as if all units were nearby on a side rack. All other functions, such as parameter editing or changing presets, are available only in the passwordprotected Setup Mode.
Placement Window: Precise Speaker Positioning
RACEs Placement window allows the user to optimize speaker positioning relative to a key listening position (the listeners head). The Placement feature combines response data from preset RACE speaker files (as measured from each enclosures center grille) with the systems physical geometry (for example, with subs on the floor and flying top cabinets) to display the systems acoustic response at the position of the listeners head. Dragging-and-dropping the listeners head displays the systems acoustic response for as many locations as the user wishes to check. SPL distribution for frequencies from 20 Hz to 152 Hz can be graphically displayed; the example shows SPL distribution at 100 Hz.

For example, in the setup at left, a subwoofer has been been placed near an emergency exit and has to be moved. The user moves the sub to a new location in the RACE Placement window, and RACE immediately displays the potential acoustic catastrophe The listeners head experiences a big sonic dip at about 100 Hz. As well, the usually inaudible 45 lobing towards the ceiling becomes definitely audible as 1st- and 2nd-order reflections, further distorting the sound at the listening position. The user then changes the systems parameters to fix positioning and lobing issues. Once the sub in question is properly delayed, system response is again be optimized for the listener and the undesirable reflective lobing is eliminated.
D x T H E N E W S TA N D A R D I N D I G I TA L S O U N D P R O C E S S I N G

Rear View

Specifications
AC voltage Power consumption Safety class Inputs Nominal input voltage Maximum input voltage Input impedance Common-mode rejection A/D conversion Outputs Nominal output voltage Maximum output voltage Output impedance Minimum load impedance D/A conversion Frequency response S/N ratio THD without transformer THD with transformer Crossover EQ filters 90-250 V AC (50-60 Hz) 30 W maximum VDE/IEC Class I 2 x XLR in, electronically balanced, transformers optional 2 x XLR OUT (Direct Out) 1.55 V (+6 dBu) 24.5 V (+30 dBu) 20 k >40 dB (1 kHz) 24-bit; 128x oversampled; linear phase 4 x XLR out; electronically balanced 1.55 V (+6 dBu) 8.7 V (+21 dBu) <24-bit; 128x oversampled; linear phase 20 Hz20 kHz (-0.5 dB) >115 dB (typical) <0.01% (1 kHz) <0.05% (1 kHz) Independently adjustable high- and low-pass filters with Butterworth and Linkwitz-Riley 12- and 24-dB/octave slopes and Bessel 6-, 12-, 18- and 24-dB/octave slopes Five filters per input; four filters per output: Parametric EQ (20 Hz20 kHz; Q 0.420.0; +/-12 dB) Low shelf (20 Hz - 20 kHz; 6/12-dB slope; +/-12 dB); Hi shelf (6-dB slope; +/-12 dB) High- and low-pass (6/12-dB slope; Q 0.42.0) All pass (outputs only) One per output, with adjustable threshold, compression ratio, and attack/release times One per output, with adjustable threshold and release time Data dump/master-slave operation/remote control 3 master delays (2900 ms) 4 channel delays (0900 ms) Delay increment: 21 sec 24-bit linear AD/DA conversion; 48-bit processing 48 kHz 122 x 32 dots, graphic LCD display with LED backlight 1.72" (43.6 mm) x 19.0" (483 mm) x 14.8" (375 mm) hwd 11 lbs (5 kg) Password lock RACE software (also free download from www.electrovoice.com) NRS 90243 RS-232 interface (installed) NRS 90247 RS-485 interface, DCN485 RS-232 to RS-485 converter NRS 90246 contact-closure interface NRS 90244 input transformer

PA20563

Compressors Limiters MIDI in/out/thru Delay Data format Sample rate Display Dimensions Weight Protection function Accessories (supplied) Accessories (optional)

Subject to change without prior notice.
America USA: Telex Communications Inc. 12000 Portland Ave South, Burnsville, MN 55337, USA, Phone: 952-884-4051, Fax: 952-884-0043 Canada (East): Acoustik GE Inc. 5715 Kincourt, Montral, PQ H4W 1Y7, Canada, Phone: 866-369-2864, 514-369-2864, Fax: 514-487-9525 Canada (Ontario): HEK Marketing Inc. 27 Fearn Crescent, Ajax, ON L1S 5L7, Canada. Phone: 800-494 6770, Fax 905-619-0366 Canada (West): KMT Pro Audio. 04-301 Nassau Street North, Winnipeg, MB R3L-2J5, Canada, Phone: 888-850-8811, Fax: 204-489-7614 Mexico: Telex de Mexico S.A. de C.V., Av. Parque Chapultepec 66-202, Col. El Parque, Edo. de Mexico, Phone:+52 (55) 5358-5434, Fax:+52 (55) 5358-5588 Latin America: Telex Communications Inc. 12000 Portland Ave South, Burnsville, MN 55337, USA, Phone: 952-887-5532, Fax: 952-736-4212 Europe and Africa & Middle-East Germany: Telex EVI Audio GmbH. Hirschberger Ring 45, D 94315, Straubing, Germany, Phone: +49 9421-706 0, Fax: +49 9421-France: EVI Audio France S.A. Parc de Courcerin, Alle Lech Walesa, F 77185 Lognes, France, Phone: +33 1-6480-0090, Fax: +33 1-6006-5103 UK: Telex Communications Ltd. 4, The Willows Centre, Willow Lane, Mitcham, Surrey CR4 4NX, UK, Phone: +646 7114, Fax: +Africa & Middle-East: Telex EVI Audio GmbH. Hirschberger Ring 45, D 94315, Straubing, Germany, Phone: +49 9421-706 0, Fax: +49 9421-Asia & Pacific Rim Japan: EVI Audio Japan Ltd. 5-3-8 Funabashi, Setagaya-Ku, Tokyo, Japan 156-0055, Phone: +81 3-5316-5020, Fax: +81 3-5316-5031 Australia: EVI Audio (Aust) Pty Ltd. Slough Business Estate, Unit 23, Silverwater, N.S.W. 2128, Australia, Phone: +61 2-9648-3455, Fax: +61 2-9648-5585 China: EVI Audio (HK) Ltd. 7th Floor China Minmetals Tower, No. 79 Chatham Road South, Tsim Sha Tsui, Kowloon, HK, Phone: +852 2351-3628, Fax: +852 2351-3329 Singapore: Telex Pte. Ltd. 3015A Ubi Road 1, 05-10 Kampong Ubi Industrial Estate, Singapore 408705, Phone: +65 6746-8760, Fax: +65 6746-1206
Pro Audio Group Telex Communications, Inc. 12000 Portland Avenue South Burnsville, Minnesota 55337 USA Tel: 952-884-4051 Fax: (USA) 952-884-0043 (INTL) 952-887-9212 Web: www.electrovoice.com