Experience simplicity. SpeechLine Digital Wireless is Sennheiser's wireless microphone system standard that guarantees highest speech intelligibility and concise sound quality.
The SpeechLine Digital Wireless series provides reliable and highly flexible solutions tailored to education and corporate applications. It is widely scalable and answers best all needs of your everyday working and lecturing environment - from small room setups to huge campus-wide installations.
As professional solution for speech and lecture, SpeechLine Digital Wireless performs with greatest reliability thanks to advanced system automatics and preconfigured sound profiles. The system offers also a range of custom settings for dedicated venues or special purposes.
Control Cockpit Software
The Sennheiser Control Cockpit software is the revolutionary new tool for easy handling, control and maintenance of the entire SpeechLine Digital Wireless system. It provides a global overview of all network enabled SpeechLine Digital Wireless devices at any time. It shows all relevant status information at a glance and makes setting adjustments for one or multiple devices at the same time very easy.
Automatic Frequency Management
For easiest set-up, Automatic Frequency Management performs an on-site real-time scan on startup to find free frequencies.
Automatic Interference Management
During operation, Automatic Interference Management changes seamlessly to a free channel in case of frequency disturbances.
Best scalability for every application size
From a presentation room with two microphone links to a meeting room with multiple microphones up to a campus wide installation with more than 2000 links – no matter what size your installation is, SpeechLine Digital Wireless always guarantees the highest speech intelligibility with its Multi-Room Mode.
SpeechLine Digital Wireless uses the future-proof, license-free 1.9 GHz frequency range. In order to make the most of this frequency range, SpeechLine Digital Wireless features two operating modes. The Automatic Mode ensures the simplest startup and a reliable, maximum range for up to 20* simultaneously used links. In Multi-Room Mode, the transmission power is adjusted to the room size to allow a significantly larger number of links. These setting options make SpeechLine Digital Wireless ideal for a wide variety of different project sizes.
*Depends on the locally approved version
Maximized flexibility and remote control
With its wide portfolio of different microphone types that all can be monitored remotely with the Sennheiser Control Cockpit software or third party solutions, SpeechLine Digital Wireless offers the perfect microphone solution for every kind of application and speaker’s preference.
Presentation and Lecture
For hands-free presentations, you can choose between wireless table stand, handheld or bodypack transmitter for use with lavalier or headmic – depending on the speaker’s preferences.
For podium discussions, SpeechLine Digital Wireless provides the easiest to handle wireless SL Tablestand 133-S / 153-S DW for panelists and the SL Handheld DW for questions and reactions from the audience.
For conference rooms, the highly flexible wireless SL Boundary 114-S DW ensures best speech intelligibility and ease-of-use for all meeting participants.
In campus-wide installations, the SpeechLine Digital Wireless system covers all speech applications associated with education – presentation and lecture, podium and meeting. The system is fully scalable and all SpeechLine Digital Wireless devices in all buildings on the entire campus can be centrally monitored remotely with the Sennheiser Control Cockpit software.
The SpeechLine Digital Wireless series ensures full integrability due to the compatibility of its components with the industry standard for multi-channel audio over IP Dante™, third party control options with Crestron, and multiple SpeechLine Digital Wireless antenna solutions.
The SpeechLine Digital Wireless antenna solutions allow for easy and unobtrusively installation of antennas just where they are needed. In combination with recommended passive combiners, the number of antenna wall mounts and cables can be minimized and the reception quality can be maximized.
Third Party Control
For maximum remote controllability, all SpeechLine Digital Wireless devices are fully compatible and remote programmable with standard programming interfaces from Crestron.
With its sophisticated portfolio of different microphone types, thoroughly compiled microphone sets and accessories like chargers, lavalier or headmics and antenna solutions, SpeechLine Digital Wireless offers a complete system of perfectly combinable advanced audio technology items.
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.
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 conncet a transmitter to a receiver you have to press and hold the pair button on each device until the LED starts to blink red and green.
Which audio outputs do I have?
To make the audio connection as easy and flexible as possible we provide XLR, TRS and phone jack as audio outputs.
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). In addition it is possible to use non- rechargeable AA batteries in the handheld and bodypack. For this the B10 or B30 tray is needed.
How can I use more than two receivers?
For the case that more than two receivers are needed please use the AWM 2 or 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 eachother. Therefore a master is needed, which controls all other microphones (follower).
Please follow these 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. These 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 the receiver is always AES 256 encrypted.
What kind of antenna cables do I use?
SpeechLine Digital Wireless is using Reverse-SMA connectors due to regulatory reasons. 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.
All benefits at a glance
Firmware Version 2.6.10 for SpeechLine Digital Wireless (SL Rack Receiver DW)
Firmware Version 2.6.2 for SpeechLine Digital Wireless (SL Rack Receiver DW)
Firmware Version 2.3.1 for SpeechLine Digital Wireless (SL Rack Receiver DW)
Firmware Version 2.4.0 for SpeechLine Digital Wireless (SL Rack Receiver DW)
Firmware Version 1.1.0 for the CHG 4N charger of the SpeechLine Digital Wireless series
Audinate Firmware Update Manager is required. Available at: www.audinate.com/products/firmware-update-manager
Printable PDF version of the interactive system documentation of the SpeechLine Digital Wireless series.
Printable PDF version of the interactive instruction manual of the Sennheiser Control Cockpit software
Information on the SpeechLine Digital Wireless system and instructions on how to install and operate the components of SpeechLine Digital Wireless
Information on how to install, open and use the Sennheiser Control Cockpit software. Includes information on how to control and monitor the following Sennheiser products in the Control Cockpit: SpeechLine Digital Wireless, TeamConnect Ceiling 2, evolution wireless G3 & G4.
Information on setting up SpeechLine Digital Wireless in a single room or location.
Information on setting up SpeechLine Digital Wireless in multiple rooms or locations using the Multi-Room Mode.
Important information and recommendations on antennas for SpeechLine Digital Wireless
Online version of the printed quick guide for first steps using SpeechLine Digital Wireless. For SL Rack Receiver DW, SL Handheld DW, SL Bodypack DW
Onlive version of printed quick guide for the SpeechLine Digital Wireless products: SL Tablestand 133-S DW, SL Tablestand 153-S DW, SL Boundary 114-S DW, CHG 2W