Dx38数字音频处理器-简介
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中文版用户手册D x 38 24位数码音响系统处理器内容页码序言 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 1.1 提醒 . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-11.2 Dx 38 特点 . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12.控制及连接 . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . 2-1 2.1 前面板 . . . . .. . . . . . . . . . . . . . . . . . . . . . . . . . 2-12.2 后面板 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-33. 安装及连接 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1 3.1 平衡式输入/输出连接 . . . . . . . . . . . . . . . . . . . . . . . . 3-13.2 不平衡式输入/输出连接.. . . . . . . . . . . . . . . . . . . . . . . 3-14. 基本操作 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1 4.1开机 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14.2电平设定 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-15.快速开始. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-16. Dx 38的配置. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1 6.1 Stereo 2 Way . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1 6.2 Stereo 2 Way / Mono Sub + Fullrange . . . . . . . . . . . . . . . . 6-2 6.3 3 Way + Fullrange . . . . . . . . . . . . . . . . . . . . . . . . . 6-3 6.4 3 Way / Mono Sub + Fullrange. . . . . . . . . . . . . . . . . . . . 6-4 6.5 3 Way / Independent Sub + Fullrange. . . . . . . . . . . . . . . . 6-4 6.6 4 Way . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-56.7 2-IN-4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-67. 操作 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1 7.1 程序的选择. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-2 7.2 编辑. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-3 7.3 储存程序和程序名. . . . . . . . . . . . . . . . . . . . . . . . . . 7-57.4 修改出厂预设程序. . . . . . . . . . . . . . . . . . . . . . . . . . 7-78. 参数 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-1 8.1 参数库. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2 8.1.1参数库. . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-2 8.1.2参数连接表 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-28.2 参数的描述. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-39.选项. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-1 9.1 设定屏幕对比度. . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2 9.2 编辑模式选择. . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2 9.3 压缩器/限幅器单位选择 . . . . . . . . . . . . . . . . . . . . . . . 9-2 9.4电平表显示模式 . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-2 9.5 编辑保护功能. . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-3 9.6温度间隔位设定 . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-4 9.7 MIDI 发送/接收通道的设定. . . . . . . . . . . . . . . . . . . . . . 9-4 9.8 发送参数. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-5 9.9 RS-232 到 MIDI 数据传送 . . . . . . . . . . . . . . . . . . . . . . 9-6 9.10 NRS 90246连接介面的设定 . . . . . . . . . . . . . . . . . . 9-7 9.11 NRS 90247 RS-485 介面设定. . . . . . . . . . . . . . . . . . . . . 9-89.12 显示软件版本 . . . . . . . . . . . . . . . . . . . . . . 9-810.规格说明. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1 10.1 技术参数. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-1 10.2 MIDI. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-310.3选配件说明 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-6 10.3.1 输入变压器安装手册 (NRS 90244) . . . . 10-6 10.3.2接口卡的安装手册 . . . . . . . . . . . . . . . . . . . 10-7 10.4 方框图. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-9 10.5 流程图. . . . . . . . . . . . . . . . . . . . . . . . . .. . . . 10-10 10.6 安装尺寸 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-11控制及连接:安装及连接:基本的操作:快速开始:快速开始:快速开始:操作:规格说明:选项功能:。
MP3内芯你懂吗?主流解码芯片详解MP3内芯你懂吗?主流解码芯片详解点击此处查看全部新闻图片如今购买MP3,理性的消费者一般不只关注外观以及功能,最主要还是机器本身的品质。
MP3的解码芯片已经为越来越多的消费者所关注,不过市场中几千款MP3,到底有哪些解码芯片为其提供良好的品质呢?那就请关注以下这篇文章吧!一、飞利浦芯片产地:荷兰如果一定要评出目前市场上最好的MP3解码芯片的话,那么无疑就是飞利浦芯片了。
飞利浦家族的解码芯片在业界一直以其“功能全,音质好,价格高”而著称。
飞利浦的解码芯片一般都采用的是BGA封装工艺,而国内的这方面技术相当有限,此外,由于飞利浦的解码芯片需要搭配另外的控制芯片电路协同工作,所以产品成本较高。
所以采用飞利浦解码芯片的厂商往往都定位于中高价位,如MPIO和IRIVER这两家韩国的MP3专业厂商。
这两个品牌一个最主要的共同特点就是在产品中全面采用了飞利浦的解码芯片。
因此,他们的产品拥有很高的音质和品质,成为全球MP3爱好者追逐的对象。
1、飞利浦SAA775X系列(SAA7750/7751/7752/7753)飞利浦SAA775x芯片是目前市场上MP3播放器解码芯片组中功能最全(支持CD直录),效果最好的解码芯片之一。
该解码芯片的音质表现为:低音下沉较深、中音表现出色、而相比之下高音则显得一般。
MP3内芯你懂吗?主流解码芯片详解点击此处查看全部新闻图片因为SAA775x中内含DSP(Digital Signal Processing,数字信号处理)和32位ARM RISC处理器,所以能用超高集成度的单颗芯片,音频解码和语音编码等工作,并且可以加入SDMI(Secure Digital Music Initiative,安全式数字音乐)保护其中SAA7750内含DSP和32位ARM RISC处理器,信噪比为90dB。
该芯片兼容多段多档位EQ智能音效,支持以AD PC M格式保存语音记录、同步显示歌名和歌曲信息、Line-in直录,此外还支持USB 1。
《中波广播发射台理论基础与实践技术手册》介绍【作者】庄涛【出版社】光明日报出版社【索书号】 ISBN 978-7-5112—6624-8【字数】 488千字(427页)【馆藏地点】样本书库【定价】 120元内容简介《中波广播发射台理论基础与实践技术手册》一书,是专门为中波广播发射台站值机员、技术人员编写的一本实用书籍,目的是为提高中波发射台值机员的业务理论知识和实际操作技能,为技术培训、职业技术鉴定提供科学、规范的依据。
本书内容涵盖了中波广播发射台值机员及技术管理人员应知应会的理论性知识和实践性知识。
全书共十二个章节,分别是:广播发展简史、中波广播理论综述、中波发射台概况、电工电子技术、仪器仪表的操作、信号源系统、DAM全固态数字调制中波发射机、PDM中波发射机的原理与维修、天馈线系统、自动化监控系统、配电系统、发射台技术防护,以及发射台理论知识要点总结、中波发射台技术能手竞赛试题精选和中波专业术语名词解释等四个附录。
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以够用为度,图文并茂,通俗易懂,便于自学,便于查询。
内容既有初级值机员应知应会的理论与实践知识,又有高级值机员应具备的解决复杂问题的理论与实践知识,更加符合中波台各层次值机员的认知水平,特别适合做中波台技术人员的培训教材使用(本书有配套教学PPT课件,需另购)。
作者简介庄涛,大专学历,高级工程师,从事自动化电气设备的安装与维修工作,有三十多年的基础电器维修实践经验,具有较强的实际操作动手能力。
一九九八年从部队转业到河南省潢川中波台工作,从事中波技术维护工作,先后发表过二十多篇中波发射相关技术论文。
自主研发或创新的DX系列全固态中波发射机故障查询系统、多路循环监听控制器、中波发射台信号源系统的整合等项目曾分获河南省广播电影电影电视局科技创新一、二、三等奖。
本书配套教学PPT课件为了配合中波值机员培训,本书各章节都有配套教学PPT课件,PPT课件的特点是清新、生动、信息量大,通过现代化多媒体投影仪实用,能够优化课堂教学,调动课堂气氛,增加学员的理解和记忆程度.彻底改变了“一本书、一支粉笔、一块黑板”单调的教学模式。
前言感谢您选购本公司的产品,请先阅读本手册以熟悉该产品。
注意:本手册提供了同系列所有型号的相关信息,由于不同的型号配置不同,所以,你选购的产品的实际配置可能与本手册的说明不尽相同,如有差异,请以您实际购买的产品为准。
重要的安全事项(针对火灾、电击或伤害人体的指示)注意-使用该电器产品时,有以下基本的预防措施:1.使用该产品前请详细阅读全部的安全事项;2.本产品应当接地,如果出现故障时,电流经最小的接地电阻流入大地,以减小电击;本产品的电源线和电源插头都配备安全接地,电源插头应当牢固插入适当的电源座,此电源座应当完全按当地的条例来安装和接地。
警告-接地装置连接不当会导致电击;如果你对产品是否正确接地存在疑问,请委托合格电工或维修人员检查;请不要尝试私自更改产品的电源插头,如果不适合电源插座,可委托合格电工安装适当的电源插座;3. 为了减小伤害的风险,当产品在小孩附近使用时,要严密监管;4. 请勿在湿度很大的地方使用机器,例如靠近浴缸、洗面盆、厨房水槽、湿度大的地下室或者靠近游泳池和湖泊;5. 该产品应当安装与通风良好的地方;6. 该产品必须远离热源,例如电暖炉、电热毯或者其他产生热量的产品;7. 该产品的电源类型必须符合操作指示或者产品上标明的类型;8. 该产品要配备一条两端的电源线(一端的插片长过另一端)。
这是安全装置。
如果你无法把电源插头插入电源插座,请联系电工来更换旧插座。
9. 长时间不使用时,请把电源线从电源插座中拔出,从电源插座拔出电源线时,请勿拉扯电源线,应当抓住电源插头将其拔出;10. 细心护理,请勿让杂物或者液体从其缝隙掉进机器内;11. 当有下列情况时,应委托合格维修人员修理:A.电源线或电源插头已被损坏B.杂物或者液体已掉进机内C.产品已被雨淋D.产品已不能正常操作或在演出中出现明显变化E.产品已跌坏或外观损坏12. 当出现在用户维修指南中没有描述的情况时,请勿尝试私自修理,应当委托合格的维修人员修理;13. 警告-勿让重物积压或踩踏电源线,切忌拉、拔或强力扭曲电源线。
工程设计方案设计规范1-01.GYJ25-86厅堂扩声系统的声学特性指标要求1-02.GB/T4959-95厅堂扩声特性的测量方法1-03.GB/T15381-94会议系统电及音频性能要求1-04.GB/T15859-1995视听、视频和电视系统中设备互连的优选配接值1-05.GBJ76-84厅堂混响时间测量规范1-06.GB50371-2006厅堂扩声系统设计规范1-07.GYT125语言扩声达到广播电视部扩声专业标准1-08.WH0301-93会议语言扩声标准达到国家文化行业专业标准1-09.WH0301-93歌舞厅扩声系统的声学特性指标与测量方法1-10. GB/T1564-95视听系统设备互连用连接器的应用1-11.JGJ-57-2000/J67-2001 剧场建筑设计规范1-12.GBJ 16-92(95年修订) 建筑设计防火规范1-13.GB50254-96 电气安装工程低电压电器施工及验收规范1-14.GB50168-92电气安装工程电缆线路施工及验收规范1-15.GB50259-96电气装置安装工程电气照明装置施工及验收规范1-16.GB50169-92电气安装工程接地装置施工及验收规范1-17.GB50194-93建筑工程施工现场供电用电安全规范1-18.WH-0202-94 舞台灯光图符代号及制图规则1-19.WH-0204-1999舞台灯具光学质量的测试与评价1-20.GB7000-86 灯光通用安全要求和试验1-21.GB/T7002-1986 投光照明灯具光度测试1-22.GB7000/14-2000通风式灯具安全要求1-23.GB7000/15-2000 舞台灯光、电视、电影及摄影场所(室内外)用灯具安全要求1-24.GB50174-93 电子计算机机房设计规范1-25.GB/T2887-2000电子计算机场地通用规范1-26.GB/50174-93电子计算机机房设计规范1-27. ISO/IEC11801-95信息技术互连国际标准1-28. GB/T50311-2000建筑与建筑群综合布线工程设计规范1-29. GBJ42-81工业企业通信设计规范1-30. GBJ79-85工业企业通讯接地设计规范1-31. GB6830-86电信线路遭受强电线路危险影响的容许值1-32.IEC801电磁兼容性标准1-33. EIA/TIA-568A商用建筑线缆标准1-34. EIA/TIA-569商用建筑通信通道和空间标准1-35. IEC61024建筑物防雷[一]扩音系统概述扩音设计概述大礼堂在使用上有自己的特点:有良好的音色,满足会议、音视频使用要求,考虑能适应不同使用环境的调整:例如报告、学术交流。
BGM产品公共广播系统一. X1400数字音频广播系统1.系统主机X14010产品概述X1400数字音频广播主机是整个系统的核心,对整个系统进行管理和触发信号的响应。
产品特性◆通过RJ45网络接口连接到系统局域网,避免了繁琐的接线工作。
◆系统主机软件可以为系统提供各种系统管理服务。
◆用户可以通过PC客户端软件对系统主机进行配置和监控。
◆主机也可脱离PC客户端的控制管理,自动运行。
◆一路RS485接口与集中式控制输入器连接,实现消防联动。
◆能同时通过网络传送4路内置立体声音频信号。
2. 数字音频广播系统控制台X14013产品概述X14013是一款嵌入式的数字广播系统控制单元,具有远程实时控制,监视数字寻址广播系统运行状态功能。
控制台采用人性化的外观设计,具有操作简单,易于操作一体式设计特点。
产品特性◆一体机的构架,外观轻巧。
◆采用触摸屏操作方式◆轻松点击触摸屏进行远程呼叫功能。
◆人性化的操作界面,操作简单方便。
◆具有用于单独TCP/IP网口,独立CobraNet网口。
◆本地话筒接口配BGM界面式话筒,◆配有鼠标和键盘的PS2接口.◆系统可以配置4台控制台。
3. 数字音频四通道编码器X14015产品概述X14015是一款基于COBRANET协议和嵌入式设计的四通道音频信号转换的编码器,可同时将四路音频数字编码,进行网络传输的功能。
编码器采用台式立体结构,箱体采用黑漆色的经典设计气息。
具有操作简单,功能强大的设计特点。
产品特性◆红外学习串口和4路独立的红外控制输出接口,实现外部音源控制功能◆一路RS485接口连接电话广播处理器,实现远程电话广播。
◆四路立体声音频输入连接本地外部音源◆四个控制输入接口用于连接消防触发信号如果只需要单一通道您还可以选择数字音频单通道编码器X14014。
4. 数字音频解码器X14017产品概述X1407是一款基于COBRANET协议和嵌入式设计的四通道音频信号转换的编码器,4路独立解码通道对网络数字信号进行音频解码和输出,可实现不同分区播放不同音乐功能。
B i a m p N e x i a音频处理器介绍编者案:传统扩音都是由调音台、音频处理、功放和音箱组成,设备众多,总投资不菲。
而非专业音频的用户往往不会操作,刚调好的一个声场,几个月后已经是惨不忍睹。
在数字化的今天,我们迎来数字媒体矩阵时代,调音台及各种音频处理设备被数字媒体矩阵取代,其计算机操作与联动,更加符合现代数字音视频集成工程应用的需要。
1.?前言Biamp Nexia于1976年在美国俄勒冈州注册,最早是生产高品质的音乐器材,紧随着专业音频技术的发展,逐步转型生产专业音频处理设备。
1996年生产出第一台Audia数字媒体矩阵,2003年推出智能话筒混音器、单声道/立体声线路混音器,功率放大器系列,同年推出专门针对中小型多媒体会议系统的NEXIA系列小型媒体矩阵(PM CS SP)。
当远程会议走入人们视线时,Biamp也在2006年生产了专门针对远程会议的Nexia TC&VC.基于他们生产音乐器材的背景和对声音的热爱,他们对声音有很高的要求,同时也把这样的要求应用到所有产品中,而且把高品质声音作为产品生产的第一位。
应用范围很广,涉及政府、学校、公交、以及视频会议系统、体育场馆扩声工程,并享有很高的赞誉。
在国际信息化产业联盟ICIA公布的最佳系统集成固定安装类产品大奖中,BIAMP公司的产品被权威期刊评为“最佳DSP处理大奖”。
2003年进入中国市场,市场份额逐年上升;你的远见可以成为现实Nexia系列产品根据工程中遇到的现实问题而量身定做的。
很多客户往往预算紧张,但对声音质量的要求却毫不妥协,并且希望联网遥控。
通过创新的数字信号处理技术,Nexia以小巧的外形提供了远胜于模拟系统的解决方案。
通过标配的Nexlink接口,最多可以4台Nexia设备级联成系统,彼此交换数字音频信号,并共享DSP资源。
再配合VS8这样人性化的线控面板,一个灵活而实用的数字音频系统就展现在你的面前。
Dx38数字音频处理器-简介Dx38RACE Software (R ealtime A coustic C luster E ditor) RACE software is EV’s professional audio solution for modeling the response of loudspeaker systems both simple and complex within specific venue measurements, and for digitally control-ling 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 com-ponents. At a glance, then, RACE users can view not only each component’s (and the system’s) 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 pre-installed 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 MagnifiedFrequency Response window for asystem that includes an EV Xi1183/64plus an EV Xi2181 4-way. Any para-meter changes, such as level, filteror delay tweaks, display immediate-ly. Even very complex array settingscan be tuned simply and accurately.DocumentationFull documentation of up to seven pages can be printed. Printed information includes listings of all parameters, as well as all filter and frequencyresponses for the EV speakers used in the system.Configuration windowThe clearly organized Configuration window allows the user to name each output for its connected speaker. Space is provid-ed for adding notes, and additional windows allow access to filter and delay settings.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 (R ealtime A coustic C luster E ditor)software.Versatile ApplicationsWith its 2-in/4-out architecture, the Dx38 is theperfect 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) throughRS-232, MIDI, or (optional) RS-485 interfaces.The Dx38’s 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 it’s easy to upgrade or try RACE out — RACE is available as a free download at .Easy Operation without a PCNo computer available? The Dx38 can be easily used without one. A clearly arranged graphic display helps in editing all parameters. Four LEDsmonitor 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.RACE(R ealtime A coustic C luster E ditor)In the Speaker window, RACE displays a complete system’sacoustical response by assigning each speaker’s 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 system’s 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), RACE’s X-Over window clearly dis- plays each output’s filter functions, including master and channel EQ settings. Resolution can be s et at ±12 dB, ±24 dB, or ±48 dB, and it’s easy to toggle between frequency and phase response. Although the output from other speak- ers in the system can be excluded from the view, the exam- ple 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 system’s real acoustical response according to the actu- al 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 real-time as they behave in a free field. With all system data and parameters entered, the user can understand how the sys- tem will perform independently of any room influence.RACE 's signal flow window provides a clear overview of all avail-able parameters. Five master equalizers are available per inputDx38 —THE NEW STANDARD IN DIGITAL SOUND PROCESSINGEV'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 (R ealtime A coustic C luster E ditor) software.Signal Flow WindowWith the Dx38’s optional RS-485 interface, RACE software permits control of large, complex speaker systems of up to 124 outputs. Access to complex net-works is provided either by exchanging the factory-installed RS-232 interface with an optional RS-485 interface, or by connecting a DCN-485 converter (RS-232 to RS-485) to the PC’s 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 3,930feet. 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.Network control is so easy and intuitive…It`s like the controllers are in a side rackjust an arm′s 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 aside rack. All other functions, such as parameter editing or changing presets, are available only in the password-protected Setup Mode.RACE Networks Control up to 124 OutputsDCN 485 ConverterRS-485 InterfacePlacement Window:Precise Speaker PositioningRACE’s Placement window allows the user tooptimize speaker positioning relative to a keylistening position (the “listener’s head”). ThePlacement feature combines response datafrom preset RACE speaker files (as measuredfrom each enclosure’s center grille) with thesystem’s physical geometry (for example,with subs on the floor and flying top cabinets)to display the system’s acoustic responseat the position of the “listener’s head.”Dragging-and-dropping the “listener’s head”displays the system’s acoustic responsefor as many locations as the user wishesto check. SPL distribution for frequenciesfrom 20 Hz to 152 Hz can be graphicallydisplayed; the example shows SPLdistribution at 100 Hz.For example, in the setup at left, a sub-woofer has been been placed near anemergency exit and has to be moved.The user moves the sub to a new locationin the RACE Placement window, andRACE immediately displays the potentialacoustic catastrophe…The “listener’s head” experiences a big sonicdip at about 100 Hz. As well, the usuallyinaudible 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 system’s parametersto fix positioning and lobing issues. Once thesub in question is properly delayed, systemresponse is again be optimized for the listenerand the undesirable reflective lobing is eliminated.D x38T HE 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 ViewSpecificationsAC voltage90-250 V AC (50-60 Hz)Power consumption30 W maximumSafety class VDE/IEC Class IInputs 2 x XLR in, electronically balanced, transformers optional2 x XLR OUT (Direct Out)Nominal input voltage 1.55 V (+6 dBu)Maximum input voltage24.5 V (+30 dBu)Input impedance20 k?Common-mode rejection>40 dB (1 kHz)A/D conversion24-bit; 128x oversampled; linear phaseOutputs 4 x XLR out; electronically balancedNominal output voltage 1.55 V (+6 dBu)Maximum output voltage8.7 V (+21 dBu)Output impedance<100 ?Minimum load impedance600 ?D/A conversion24-bit; 128x oversampled; linear phaseFrequency response20 Hz–20 kHz (-0.5 dB)S/N ratio>115 dB (typical)THD without transformer<0.01% (1 kHz)THD with transformer<0.05% (1 kHz)Crossover Independently adjustable high- and low-pass filterswith Butterworth and Linkwitz-Riley 12- and 24-dB/octave slopesand Bessel 6-, 12-, 18- and 24-dB/octave slopesEQ filters Five filters per input; four filters per output:– Parametric EQ (20 Hz–20 kHz; Q 0.4–20.0; +/-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 0.4–2.0)– All pass (outputs only)Compressors One per output, with adjustable threshold, compression ratio,and attack/release timesLimiters One per output, with adjustable threshold and release timeMIDI in/out/thru Data dump/master-slave operation/remote controlDelay 3 master delays (2–900 ms)4 channel delays (0–900 ms)Delay increment: 21 μsecData format24-bit linear AD/DA conversion; 48-bit processingSample rate48 kHzDisplay122 x 32 dots, graphic LCD display with LED backlight Dimensions 1.72" (43.6 mm) x 19.0" (483 mm) x 14.8" (375 mm) hwdWeight11 lbs (5 kg)Protection function Password lockAccessories (supplied)RACE software (also free download from )NRS 90243 RS-232 interface (installed)Accessories (optional)NRS 90247 RS-485 interface, DCN485 RS-232 to RS-485 converterNRS 90246 contact-closure interfaceNRS 90244 input transformerSubject to change without prior notice.PA20563AmericaUSA:Telex Communications Inc. 12000 Portland Ave South, Burnsville, MN 55337, USA, Phone: 952-884-4051, Fax: 952-884-0043Canada (East):Acoustik GE Inc. 5715 Kincourt, Montréal, PQ H4W 1Y7, Canada, Phone: 866-369-2864, 514-369-2864, Fax: 514-487-9525Canada (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: 204-489-7614Mexico: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) 5358-5588Latin America:Telex Communications Inc. 12000 Portland AveSouth, Burnsville, MN 55337, USA, Phone: 952-887-5532, Fax: 952-736-4212Europe and Africa & Middle-EastGermany:Telex EVI Audio GmbH. Hirschberger Ring 45, D 94315, Straubing, Germany, Phone: +49 9421-706 0, Fax: +49 9421-706 265France:EVI Audio France S.A. Parc de Courcerin, Allée Lech Walesa, F 77185 Lognes, France, Phone: +33 1-6480-0090, Fax: +33 1-6006-5103UK:Telex Communications Ltd. 4, The Willows Centre, Willow Lane, Mitcham, Surrey CR4 4NX, UK, Phone: +44 208 646 7114, Fax: +44 208 640 7583Africa & Middle-East:Telex EVI Audio GmbH. Hirschberger Ring 45, D 94315, Straubing, Germany, Phone: +49 9421-706 0, Fax: +49 9421-706 265Asia & Pacific RimJapan:EVI Audio Japan Ltd. 5-3-8 Funabashi, Setagaya-Ku, Tokyo, Japan 156-0055, Phone: +81 3-5316-5020, Fax: +81 3-5316-5031Australia:EVI Audio (Aust) Pty Ltd. Slough Business Estate, Unit 23, Silverwater, N.S.W. 2128, Australia, Phone: +61 2-9648-3455, Fax: +61 2-9648-5585China:EVI Audio (HK) Ltd. 7th Floor China Minmetals T ower, No. 79 Chatham Road South, Tsim Sha Tsui, Kowloon, HK, Phone: +852 2351-3628, Fax: +852 2351-3329Singapore:Telex Pte. Ltd. 3015A Ubi Road 1, 05-10 Kampong Ubi Industrial Estate, Singapore 408705, Phone: +65 6746-8760, Fax: +65 6746-1206。
Dx38RACE Software (R ealtime A coustic C luster E ditor) RACE software is EV’s professional audio solution for modeling the response of loudspeaker systems both simple and complex within specific venue measurements, and for digitally control-ling 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 com-ponents. At a glance, then, RACE users can view not only each component’s (and the system’s) 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 pre-installed 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 MagnifiedFrequency Response window for asystem that includes an EV Xi1183/64plus an EV Xi2181 4-way. Any para-meter changes, such as level, filteror delay tweaks, display immediate-ly. Even very complex array settingscan be tuned simply and accurately.DocumentationFull documentation of up to seven pages can be printed. Printed information includes listings of all parameters, as well as all filter and frequencyresponses for the EV speakers used in the system.Configuration windowThe clearly organized Configuration window allows the user to name each output for its connected speaker. Space is provid-ed for adding notes, and additional windows allow access to filter and delay settings.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 (R ealtime A coustic C luster E ditor)software.Versatile ApplicationsWith its 2-in/4-out architecture, the Dx38 is theperfect 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) throughRS-232, MIDI, or (optional) RS-485 interfaces.The Dx38’s 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 it’s easy to upgrade or try RACE out — RACE is available as a free download at .Easy Operation without a PCNo computer available? The Dx38 can be easily used without one. A clearly arranged graphic display helps in editing all parameters. Four LEDsmonitor 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.RACE(R ealtime A coustic C luster E ditor)In the Speaker window, RACE displays a complete system’sacoustical response by assigning each speaker’s acousticaldata (phase and magnitude) to the appropriate output. Thedata is measured in a free field, and all influences of filterfunctions, levels and delay settings are then calculated.RACE thus displays the system’s acoustical response —including all parameters used on the Dx38, but without anyroom influence — in realtime. The Speaker window worksexclusively with EV speaker systems and helps optimize theuse of all digital parameter functions.In this example of a 4-way system (an EV Xi-1183 3-waywith an EV Xi-2181 sub), RACE’s X-Over window clearly dis-plays each output’s filter functions, including master andchannel EQ settings. Resolution can be set at ±12 dB, ±24dB, or ±48 dB, and it’s easy to toggle between frequencyand phase response. Although the output from other speak-ers in the system can be excluded from the view, the exam-ple uses all four outputs. (This slightly complex exampleshows a combination of conventional crossovers with a wideoverlap between Sub (Xi-2181) and Lo (Xi-1183 LF) inputs).The example shows the electrical transfer function of theDx38 for this system through the complex summation of itsfilters, levels, and delays.It is difficult to derive any idea of the sound quality from theprevious window. But once the acoustical data of the rawcomponents and amplifiers is added, the window displaysthe system’s real acoustical response according to the actu-al parameter settings. Parameter alterations are immediatelyvisible and audible.RACE, an industry first, is therefore unique in that it canshow the true frequency response of EV components in real-time as they behave in a free field. With all system data andparameters entered, the user can understand how the sys-tem will perform independently of any room influence.RACE 's signal flow window provides a clear overview of all avail-able parameters. Five master equalizers are available per inputDx38 — THE NEW STANDARD IN DIGITAL SOUND PROCESSINGEV'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 (R ealtime A coustic C luster E ditor) software.Signal Flow WindowWith the Dx38’s optional RS-485 interface, RACE software permits control of large, complex speaker systems of up to 124 outputs. Access to complex net-works is provided either by exchanging the factory-installed RS-232 interface with an optional RS-485 interface, or by connecting a DCN-485 converter (RS-232 to RS-485) to the PC’s 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 3,930feet. 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.Network control is so easy and intuitive…It`s like the controllers are in a side rackjust an arm´s 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 password-protected Setup Mode.RACE Networks Control up to 124 OutputsDCN 485 ConverterRS-485 InterfacePlacement Window:Precise Speaker PositioningRACE’s Placement window allows the user tooptimize speaker positioning relative to a keylistening position (the “listener’s head”). ThePlacement feature combines response datafrom preset RACE speaker files (as measuredfrom each enclosure’s center grille) with thesystem’s physical geometry (for example,with subs on the floor and flying top cabinets)to display the system’s acoustic responseat the position of the “listener’s head.”Dragging-and-dropping the “listener’s head”displays the system’s acoustic responsefor as many locations as the user wishesto check. SPL distribution for frequenciesfrom 20 Hz to 152 Hz can be graphicallydisplayed; the example shows SPLdistribution at 100 Hz.For example, in the setup at left, a sub-woofer has been been placed near anemergency exit and has to be moved.The user moves the sub to a new locationin the RACE Placement window, andRACE immediately displays the potentialacoustic catastrophe…The “listener’s head” experiences a big sonicdip at about 100 Hz. As well, the usuallyinaudible 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 system’s parametersto fix positioning and lobing issues. Once thesub in question is properly delayed, systemresponse is again be optimized for the listenerand the undesirable reflective lobing is eliminated.D x38T HE 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 ViewSpecificationsAC voltage90-250 V AC (50-60 Hz)Power consumption30 W maximumSafety class VDE/IEC Class IInputs 2 x XLR in, electronically balanced, transformers optional2 x XLR OUT (Direct Out)Nominal input voltage 1.55 V (+6 dBu)Maximum input voltage24.5 V (+30 dBu)Input impedance20 kΩCommon-mode rejection>40 dB (1 kHz)A/D conversion24-bit; 128x oversampled; linear phaseOutputs 4 x XLR out; electronically balancedNominal output voltage 1.55 V (+6 dBu)Maximum output voltage8.7 V (+21 dBu)Output impedance<100 ΩMinimum load impedance600 ΩD/A conversion24-bit; 128x oversampled; linear phaseFrequency response20 Hz–20 kHz (-0.5 dB)S/N ratio>115 dB (typical)THD without transformer<0.01% (1 kHz)THD with transformer<0.05% (1 kHz)Crossover Independently adjustable high- and low-pass filterswith Butterworth and Linkwitz-Riley 12- and 24-dB/octave slopesand Bessel 6-, 12-, 18- and 24-dB/octave slopesEQ filters Five filters per input; four filters per output:– Parametric EQ (20 Hz–20 kHz; Q 0.4–20.0; +/-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 0.4–2.0)– All pass (outputs only)Compressors One per output, with adjustable threshold, compression ratio,and attack/release timesLimiters One per output, with adjustable threshold and release timeMIDI in/out/thru Data dump/master-slave operation/remote controlDelay 3 master delays (2–900 ms)4 channel delays (0–900 ms)Delay increment: 21 µsecData format24-bit linear AD/DA conversion; 48-bit processingSample rate48 kHzDisplay122 x 32 dots, graphic LCD display with LED backlightDimensions 1.72" (43.6 mm) x 19.0" (483 mm) x 14.8" (375 mm) hwdWeight11 lbs (5 kg)Protection function Password lockAccessories (supplied)RACE software (also free download from )NRS 90243 RS-232 interface (installed)Accessories (optional)NRS 90247 RS-485 interface, DCN485 RS-232 to RS-485 converterNRS 90246 contact-closure interfaceNRS 90244 input transformerSubject to change without prior notice.PA20563AmericaUSA:Telex Communications Inc. 12000 Portland Ave South, Burnsville, MN 55337, USA, Phone: 952-884-4051, Fax: 952-884-0043Canada (East):Acoustik GE Inc. 5715 Kincourt, Montréal, PQ H4W 1Y7, Canada, Phone: 866-369-2864, 514-369-2864, Fax: 514-487-9525Canada (Ontario):HEK Marketing Inc. 27 Fearn Crescent, Ajax, ON L1S 5L7, Canada. Phone: 800-494 6770, Fax 905-619-0366Canada (West):KMT Pro Audio. 04-301 Nassau Street North, Winnipeg, MB R3L-2J5, Canada, Phone: 888-850-8811, Fax: 204-489-7614Mexico: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) 5358-5588Latin America:Telex Communications Inc. 12000 Portland Ave South, Burnsville, MN 55337, USA, Phone: 952-887-5532, Fax: 952-736-4212Europe and Africa & Middle-EastGermany:Telex EVI Audio GmbH. Hirschberger Ring 45, D 94315, Straubing, Germany, Phone: +49 9421-706 0, Fax: +49 9421-706 265France:EVI Audio France S.A. Parc de Courcerin, Allée Lech Walesa, F 77185 Lognes, France, Phone: +33 1-6480-0090, Fax: +33 1-6006-5103UK:Telex Communications Ltd. 4, The Willows Centre, Willow Lane, Mitcham, Surrey CR4 4NX, UK, Phone: +44 208 646 7114, Fax: +44 208 640 7583Africa & Middle-East:Telex EVI Audio GmbH. Hirschberger Ring 45, D 94315, Straubing, Germany, Phone: +49 9421-706 0, Fax: +49 9421-706 265Asia & Pacific RimJapan:EVI Audio Japan Ltd. 5-3-8 Funabashi, Setagaya-Ku, Tokyo, Japan 156-0055, Phone: +81 3-5316-5020, Fax: +81 3-5316-5031Australia:EVI Audio (Aust) Pty Ltd. Slough Business Estate, Unit 23, Silverwater, N.S.W. 2128, Australia, Phone: +61 2-9648-3455, Fax: +61 2-9648-5585China: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 2351-3329Singapore:Telex Pte. Ltd. 3015A Ubi Road 1, 05-10 Kampong Ubi Industrial Estate, Singapore 408705, Phone: +65 6746-8760, Fax: +65 6746-1206。