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  • 支持较新的IT标准
    集成了较新IT标准，新款Speechline多通道接收机能够满足全球范围IT管理者和集成商的所有需求。它不仅提供了IEEE 802.1X标准协议，而且在设备上提供了PoE和Dante协议接口，使其能够实现方便快捷且稳定安全的网络布局和扩展。
    
    兼容现有的IT&AV架构
    多通道接收机和机架接收机提供模拟音频输出端口，因此Speechline数字无线系统可方便地集成到现有的AV框架中。多通道接收机同时集成了一个内置的自动调音台和数字音频输出，通过两个Dante协议接口能够实现与你现有的IT架构之间特别高效的集成。我们提供第三方控制协议和插件，能够实现与其他系统之间的集成。
    
    安全操控
    Speechline数字无线系统具有很高的安全性，语音信号经过AES 256加密处理，具有高度保密性。Speechline多通道接收机支持IEEE 802.1X协议，能够方便快捷且稳定安全地集成到你的网络之中。两个RJ45接口能够独立配置使用：既可以控制信号和音频信号各走一个网口，也可以两个端口都作为Dante网络使用，实现冗余备份，优化稳定和安全性。可以使用Dante Domain Manager™软件来对你的Dante设置进行安全性管理。

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  • 远程控制&排除故障
    Sennheiser Control Cockpit控制中心软件可为你提供整个校园音频系统的完整预览和远程控制。例如使用Monitoring View就能够实时监控任意房间中任意一台设备的全部相关信息。远程维护功能方便找到并解决问题，比如忘记解除静音开关等等。提示功能能够在问题出现前，例如电池电量不足时，发电子邮件或手机短信给你，从而让你有时间快速应对。
    
    先进的系统自动化处理
    数字无线系统具有先进的系统自动化处理功能。自动频率管理能够在设备开机时自动实时进行频率扫描，以实现方便的设置。在工作过程中，自动化干涉管理会在频率干扰出现时自动将载波转换到空闲通道上。先进的自动电平管理功能，不再需要手动音量调整。
    
    多房间模式
    Speechline数字无线系统具有两种工作模式。自动化模式使用简单便捷，支持20个通道同时使用（各国法律法规所允许的频段范围内）。在多房间模式下，系统的传输功率可以根据房间尺寸调整，以适应从小会议室到更大的校园音频系统的不同应用场景。

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  • 出色的电池管理
    使用Speechline数字无线系统将不会再出现电池耗尽的工作失误。15个小时的电池使用时长保证了Speechline数字无线话筒能够满足日常工作中长时间使用的需求。网络充电器除了可以为话筒电池充电，还是话筒的收纳设备。Sennhesier Control Cockpit软件能够提供整个校园音频系统中所有话筒电池状态的整体信息。
    
    专注于语音品质
    Speechline数字无线系统对语音清晰度做了优化处理，优质的Sennheiser话筒头，可针对男声和女声做独立的均衡器预设，在多数应用环境下都保证非常好的语音清晰度和识别度。Speechline多通道接收机内置自动电平管理功能，能够同时对多名演讲者进行自动化混音，并且保证每一位演讲者的声音都具有良好的的清晰度和识别度。
    
    无需操作硬件
    Speechline数字无线话筒非常便于使用。演讲者只需从充电站中取出话筒，就可以开始自己的演讲，不需要对接收机进行设置。这避免了用户误操作引起的故障。机架接收机可以安装在IT或AV机架上，多通道接收机可以安装在墙面或天花板之上，低调又美观。

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  • 1.9GHz频段
    这是很多国家都可以免费使用的频段，也是无线通讯系统所使用的RF射频标准，并且这也是未来无线话筒使用的主要频带。
    
    无需额外硬件
    使用Speechline数字无线系统可在硬件投入上节省资金。其内置的DSP处理器具有独立的男声和女声均衡器预设。多通道接收机具有自动混音功能，并采用了内置天线的设计。
    
    节约成本
    Speechline数字无线系统可减少对设备后期维护和服务资金的投入。免费的Sennheiser Control Cockpit管理软件不仅降低了时间投入，也实现了数字化的工作流程。原先大量的人工现场操控，现在可以从网络中的任何节点进行按键触控操作。系统越大，就越能节约成本。

FAQ

• What kind of transmitters are available?

  • For the SpeechLine Digital Wireless Series there are 5 transmitters available:
    - SL Handheld DW
    - SL Bodypack DW
    - SL Tablestand 133-S DW (with 3 pin XLR for gooseneck mics)
    - SL Tablestand 153-S DW (with 5 pin XLR gooseneck mics)
    - SL Boundary 114-S DW

• How many microphones can be used in one room?

  • Depending on the regional regulations it is possible to get up to 20 microphones in one room. With the Multi-room option the channel number can be increased.

• I want to use SpeechLine in several rooms, how can I increase the number of microphones?

  • For this case SpeechLine Digital Wireless offers the possibility to adjust the transmitting power. By selecting the corresponding room size it is possible to get as many mircophones in your building as needed. To get the right and secure value the "Walk Test" can support you.

    More information can be found here

• Which RF frequency range is used in SpeechLine Digital Wireless?

  • SpeechLine Digital Wireless is using DECT range, which is well known from telephone market. Due to this fact the use of SpeechLine Digital Wireless is future proved and license free.

• Do I need a license to use SpeechLine Digital Wireless?

  • No, the 1G9 DECT range is license free.

• How big is the latency?

  • The latency of SpeechLine is 19 ms, which is an applicable value for speech.

• How do I connect my transmitter and receiver?

  • To connect a transmitter to a rack receiver you have to press and hold the pair button on each device until the LED starts to blink red and green. For connecting a transmitter with a SL MCR DW press the pair button of the dedicated channel in Sennheiser Control Cockpit and press and hold the pair button at the transmitter until the LED starts to blind red and green.

• Which audio outputs do I have?

  • To make the audio connection as easy and flexible as possible we provide several options. On the SL Rack Receiver DW we are offering XLR, TRS and phone jack as audio outputs. On the SL MCR DW all channels are available digital via DANTE and thanks to the integrated auto mixer also analog by using a 3- pin Phoenix 3.81.mm connector.

• Which batteries can I use?

  • The transmitter have an lithium ion battery in the delivery with which a transmitter can work up to 18h (depending on the device).

• How can I use more than two receivers?

  • For the case that more than two SL Rack Receivers DW are needed please use the AWM 2 or AWM 4 together with our combiner SL PASC 2 or SL PASC 4.

• What kind of antennas are avaiable?

  • As remote antenna the AWM 2 and AMW 4 is recommended. You can use one receiver with the AWM 2 and two receivers with the AWM 4. Together with a combiner the number of receivers can be increased. In any case additional cables are needed.

• How do I charge the transmitters?

  • We are offering 3 different chargers:
    - CHG 2 a two bay charger for handheld and bodypack
    - CHG 4N a four bay network charger for handheld and bodypack
    - CHG 2W a two bay inductive charger for tablestand and boundary.
    In addition the battery BA 10 (handheld) and BA 30 (body pack) can be charged via USB.

• Is there a possibility to monitor SpeechLine Digital Wireless?

  • With the Sennheiser Control Cockpit the receiver and the CHG 4N can be monitored and controlled remotely.

• Does the receiver support DHCP?

  • Yes, the receiver supports DHCP, Automatic IP and fixed IP. The Network mode can be adjusted in the receivers menu.

• Which headsets and lavaliers can be used with SL Bodypack DW?

  • You can use any headset or lavalier from Sennheiser. We recommend to use the SL Headmic 1 or MKE 1.

• How do I make a firmware update?

  • The firmware update is done via the Sennheiser Control Cockpit Software. As soon as a receiver has been upgraded to a new firmware the update of the portable transmitter will be done automatically when paired. In addition a transmitter can be upgraded via the Sennheiser Control Cockpit Software and the the CHG 4N.

• What is the difference between Master and Follower receiver?

  • To get the maximum number of microphones it is necessary to synchronize them with each other. Therefore, a master is needed, which controls all other microphones (follower).
    If you are using SL MCR DW the Master/Follower set up is done automatically.
    Please note: Any change on the Master/ Follower set up can only be done while the transmitters are switched off.
    
    If you are using only SL Rack Receiver DW please follow the steps below to ensure a valid Master / Follower configuration for your system:
    
    - Prepare and connect the antennas (if needed with AMW 4 and combiner)
    - Switch on one receiver and pair a transmitter. Wait until the LED at the receiver turns to green. This microphone will become the Master.
    - Switch on all other receivers, while the Master receiver is still on. All other microphones will become a follower automatically.
    
    IMPORTANT: As soon as the Master / Follower configuration has been done all receivers have to be switched on at the same time e.g. via a power strip.

• Do I have any kind of security feature?

  • Yes, the connection of a transmitter to a receiver is always AES 256 encrypted. The SL MCR DW offers the possibility to use IEEE 802.1x authentication for secured network deployment.

• What kind of antenna cables do I use?

  • SpeechLine Digital Wireless is using Reverse-SMA connectors due to regulatory reasons at the SL Rack Receiver DW. Sennheiser is offering RG-58 antenna cables in 1m, 5m 10m and 20m. A length higher than 20m is not recommended because the cable attenuation will be too high.

• Does SpeechLine Digital Wireless supports Media Control systems?

  • Yes, SpeechLine Digital Wireless is using the Sennheiser Sound Protocol, which can be used for programming a media control system. Furthermore, Plug-Ins for Crestron and QSC are available.

• What does "automatic Gain" mean?

  • SpeechLine Digital Wireless adjusts the sensitivity at the microphone automatically to the most convenient level. That means you don't have to take care about gain anymore.

• How do I set up the IP address of a receiver?

  • The IP address can be set manually or automatically via DHCP. Furthermore, IPv6 and mDNS is supported.

• How do I change the network mode at the SL MCR DW?

  • Changing the network modes can be done via Sennheiser Control Cockpit or the Dante Controller from Audinate. In Sennheiser Control Cockpit select the SL MCR DW and browse to the Network settings tab. There any network setting incl. the network mode can be changed. In Dante Controller as soon as the SL MCR DW is selected go to the “network config” tab and select the required mode in the drop-down menu. Please note: A restart of the SL MCR DW is required after changing the mode.

• Is PoE daisy chained in the single cable mode?

  • No, PoE is not daisy chainable. For the case a second SL MCR DW an additional PoE injector is required. The audio and network data are daisy chained.

• Which PoE class is used with SL MCR DW?

  • IEEE 802.3af Class 3.

• Is it possible to use SL MCR DW and SL Rack Receiver DW in the same room?

  • Yes, that’s possible. We recommend switching on one SL MCR DW first to ensure, that this device become a Master. Afterwards any other Receiver can be switched on and will automatically be a Follower. Depending on the regional regulations up to 20 channels in one room can be used.

• Why do I have the down mix digital and analog?

  • The automatic mixing of all audio channels offers the possibility to use up to 4 channels of Speechline Digital Wireless even if only one input channel is left in the DSP or audio mixer. To be as flexible as possible the down mix signal is available digital via Dante as well as analog. Due to this the integration of Speechline in existing infrastructures is very easy. The audio signal is equal on both outputs, but the level can be adjusted separately in Sennheiser Control Cockpit.

• What is the maximum cable length for network cables?

  • The SL MCR DW is a network device and therefore the same recommendation as for any other network equipment is valid. Depending on the quality of the network cable up to 100m can be used.

• Does SpeechLine support AES 67?

  • Yes the SL MCR DW supports AES 67. You can activate this function by using the Dante Controller. Use the AES 67 config Tab and enable AES 67. Make sure, that the RTP Multicast address prefix is the same on any device (default: 69).

• Can I integrate SpeechLine Digital Wireless in my Dante Domain Manger?

  • Yes, the SL MCR DW is ready to use with the Dante Domain Manager.