Sennheiser SL Rack Receiver DW-3-EU

Name: Sennheiser SL Rack Receiver DW-3-EU Half-Rack Wireless Microphone Receiver
Brand: Sennheiser
SKU: sennheiser-sl-rack-receiver-dw-3-eu-505882
Availability: InStock

Overview

The Sennheiser SL Rack Receiver DW-3-EU is a half-width 19-inch receiver for the SpeechLine Digital Wireless System. It has an OLED display, bi-directional control of linked mobile transmitters and 256-bit AES encryption. It offers a 20 to 20,000 Hz audio response, 19 ms latency and a 2-year warranty. It suits meeting rooms, lecture halls and conference venues across Qatar where reliable wireless speech matters. Request a quote from SmartRooms Qatar.

The Sennheiser SL Rack Receiver DW-3-EU is the receiving unit of the SpeechLine Digital Wireless System, designed for a 19-inch equipment rack. Its half-width chassis suits comms rooms, AV cabinets and control rooms where space is limited. The unit receives the signal from the system's mobile transmitters and passes audio on through XLR and RCA outputs, so it can feed a mixer, amplifier or recording device.

Audio performance and connections that matter

The receiver lists a signal-to-noise ratio above 90 dB(A) and a dynamic range above 120 dB(A), with an audio frequency response of 20 to 20,000 Hz and 24 bit/48 kHz sampling. Latency is rated at 19 ms, and typical total harmonic distortion is 0.1 %. Audio leaves the unit through one XLR 3M output and two RCA outputs, while the RJ 45 network port carries control and status data.

XLR 3M audio output for a professional mixer or amplifier
Two RCA outputs for a second, simpler audio feed
RJ 45 network port with Ethernet IPv4 and IPv6 support

Setup, control and network integration

A clear OLED display shows the receiver's status and settings. Bi-directional communication lets operators adjust the settings of linked mobile transmitters from the receiver itself, and a quick pairing process ties each transmitter securely to its receiver. Automatic frequency and interference management helps keep the link stable. Through the network port, settings and status can be reached by AMX and Crestron media control systems and Sennheiser's dedicated iOS apps. The system uses 256-bit AES encryption, and the unit is remote controllable.

Where it fits in Qatar and what to plan for

In a university lecture theatre in Education City, the receiver can sit in a locked AV cabinet while lecturers use wireless transmitters across the stage. A ministry boardroom in West Bay can follow the same pattern, with the receiver in an air-conditioned comms room and its audio feeding the room's sound system. A hotel ballroom in The Pearl hosting conferences can keep the rack in back-of-house and connect it to the house mixer.

Plan the rack position first. The two antennas can be mounted at the back or the front, and extension cables for wall mounting are available from the manufacturer, which helps when the rack sits far from the stage or podium. The rated operating range is -10 °C to +55 °C with relative humidity up to 95 %, so keep the receiver in a ventilated, cooled space rather than an unventilated cabinet in summer. Before ordering, confirm that the supplied power supply suits Qatar's 240 V, 50 Hz mains and that the 1880.000 - 1900.000 frequency range suits your site and transmitters.

The receiver ships with one power supply and two antennas, and no battery. The manufacturer's warranty for this model is 2 years. Request a quote from SmartRooms Qatar and our team will confirm the configuration, the mounting accessories and delivery to any of Qatar's 8 municipalities.

Highlights

Half-width 19-inch rack receiver for SpeechLine Digital Wireless
Frequency range 1880.000 - 1900.000
Clear OLED display with bi-directional transmitter control
Automatic frequency and interference management
19 ms latency and above 90 dB(A) signal-to-noise ratio
AMX and Crestron media control with Ethernet IPv4 and IPv6
256-bit AES encryption and a 2-year manufacturer warranty

Room fit

Tell us the room size and platform (Teams, Zoom or BYOD) and we confirm the right combination with your quotation.

Estimated timeline

Quotation within 1 working day · delivery timing depends on stock availability, and we confirm it with your quotation.

Specifications

39 specifications · Source: manufacturer · checked Oct 2026

Logistics1

Warranty (years): 5

Product3

Latency (ms): 19 ms
Total harmonic distortion (THD): typ. 0.1 %
RF sensitivity: < -90 dBm

Frequency Specifications2

Frequency range: 1880.000 - 1900.000
Audio frequency response: 20 to 20,000 Hz

Acoustic Properties3

Dynamic range (>): > 120 dB(A)
Sampling rates: 24 bit/48 kHz
Signal-to-noise ratio: > 90 dB(A)

Connectivity2

Connection ports: Audio Out: XLR 3M Audio Out: 2 x RCA Network: RJ 45
Connection: Wireless

Ambient Conditions2

Operating relative humidity (≤ %): max. 95 %
Operating temperature (C): –10 °C to +55 °C (14 °F to 131 °F)

Battery & Power2

Battery included: N
Power consumption (Amp): 350 mA

Dimensions4

Product weight (g): 828
Product height: 73
Product length: 405
Product width: 274

SL Rack Receiver DW-3-EU20

article_number: 505882
specs · Logistics · Warranty (years): 2
specs · Product · Latency (ms): 19 ms
specs · Product · Total harmonic distortion (THD): typ. 0.1 %
specs · Product · RF sensitivity: < -90 dBm
specs · Frequency Specifications · Frequency range: 1880.000 - 1900.000
specs · Frequency Specifications · Audio frequency response: 20 to 20,000 Hz
specs · Acoustic Properties · Dynamic range (>): > 120 dB(A)
specs · Acoustic Properties · Sampling rates: 24 bit/48 kHz
specs · Acoustic Properties · Signal-to-noise ratio: > 90 dB(A)
specs · Connectivity · Connection ports: Audio Out: XLR 3M Audio Out: 2 x RCA Network: RJ 45
specs · Ambient Conditions · Operating relative humidity (≤ %): max. 95 %
specs · Ambient Conditions · Operating temperature (C): –10 °C to +55 °C (14 °F to 131 °F)
specs · Battery & Power · Battery included: N
specs · Battery & Power · Power consumption (Amp): 350 mA
specs · Dimensions · Product weight (g): 828
specs · Dimensions · Product height: 73
specs · Dimensions · Product length: 405
specs · Dimensions · Product width: 274
in_the_box: (1) SL Receiver DW Rack receiver · (1) Power supply · (2) Antennas

Downloads

0 files from the manufacturer

No downloadable files are listed for this model yet. Ask us and we will send the datasheet.

Questions about SL Rack Receiver DW-3-EU

What is the Sennheiser SL Rack Receiver DW-3-EU used for?

It is the rack-mounted receiver of the SpeechLine Digital Wireless System. It takes the signal from its mobile transmitters and sends audio out through one XLR 3M output and two RCA outputs. It suits organisations running wireless microphones in lecture halls, meeting rooms or conference venues that want the receiver housed in an AV rack rather than on a desk. Its half-width 19-inch chassis fits a shared equipment cabinet.

Which frequency range does this model operate in?

The manufacturer data lists this EU variant with a frequency range of 1880.000 - 1900.000. Other variants of the same receiver are listed with different ranges, so the band must match your transmitters and your site. Before ordering, ask the SmartRooms Qatar team to confirm the band against the transmitters you plan to use, so the system is specified correctly from the start.

How do the receiver and the transmitters pair?

Each mobile transmitter is linked to the receiver through a quick pairing process that ties the two units securely. Once paired, bi-directional communication lets operators adjust transmitter settings from the receiver's OLED display, so a technician does not need to walk to the presenter's microphone to change them. The manufacturer's instruction manual for the SpeechLine Digital Wireless System describes the pairing steps, and SmartRooms Qatar can confirm the sequence for your transmitters.

Can the receiver be controlled from a room control system or a tablet?

Yes. The network port exposes settings and status through AMX and Crestron media control protocols, and Sennheiser's dedicated iOS apps can also access them. Ethernet connectivity supports IPv4 and IPv6, and the unit is remote controllable. This suits a university AV team that wants lecture-theatre microphone status on a central control panel, or a ministry technician who needs to check receiver status from a tablet. Confirm your control system supports AMX or Crestron before purchase.

What audio outputs and connections are on the rear panel?

The rear panel offers one XLR 3M audio output, two RCA audio outputs and one RJ 45 network port. The XLR output suits a professional mixer or amplifier input, while the RCA outputs give a second, simpler feed for a recorder or secondary amplifier. The RJ 45 port handles network control and status. Confirm the cable length and routing from the rack to your mixer when you plan the installation.

How good is the audio performance?

The receiver lists a signal-to-noise ratio above 90 dB(A), a dynamic range above 120 dB(A) and an audio frequency response of 20 to 20,000 Hz. It samples at 24 bit/48 kHz, with a latency of 19 ms and typical total harmonic distortion of 0.1 %. These figures suit speech in lecture halls, boardrooms and conference rooms, where the aim is clear voice reproduction with little delay. Results also depend on the transmitter, the microphone and the room acoustics.

How are the antennas mounted, and what if the rack is far from the stage?

The receiver comes with two antennas, which can be mounted on the back or the front of the unit. Extension cables for wall mounting are available from the manufacturer, which helps when the rack sits in a comms room away from the stage or podium. Plan the antenna position before cabling so the receiver has a clear path to the transmitters in the room. Ask SmartRooms Qatar to confirm which accessories your layout needs as part of the quotation.

Is the receiver suitable for Qatar's summer heat?

The source data gives an operating temperature range of -10 °C to +55 °C and an operating relative humidity of up to 95 %. Summer temperatures in Qatar can exceed 45 °C, so the receiver should sit in a ventilated, cooled space such as an air-conditioned comms room, not an unventilated cabinet that traps heat from other equipment. Keep the rack out of direct sunlight from windows and check cabinet airflow during planning.

Would this receiver suit a lecture theatre in Education City?

Yes. A lecture theatre in Education City with several wireless presenter microphones can keep this receiver in a locked AV cabinet at the back of the room, with its XLR output feeding the room's mixer. Transmitters are paired with the receiver before term starts, and staff can adjust settings from the OLED display without interrupting lectures. Request a quote so the number of transmitters and the cable run match the room layout.

Is it practical for a boardroom in West Bay?

For a ministry or corporate boardroom in West Bay, the receiver usually sits in the comms room while its audio output feeds the room's sound system, which keeps the boardroom table uncluttered. The half-width 19-inch chassis fits a shared rack, and the network port lets the facilities team check status from a control panel. The unit weighs 828 g and measures 73 mm high, so it fits neatly into a shared equipment rack.

Does it suit a hotel ballroom in The Pearl that hosts frequent conferences?

It can, provided the rack stays in back-of-house and the transmitters are repatched between events. Each new transmitter is paired with the receiver through the quick pairing process, and bi-directional control lets the sound team adjust transmitter settings from the receiver. Automatic frequency and interference management supports reliable operation when events change. Confirm the frequency band and the number of transmitters with SmartRooms Qatar before the venue is fitted out.

Can we buy this receiver through an LPO or a government tender?

Yes. SmartRooms Qatar supplies this receiver against purchase orders (LPOs) and government tenders, including Monaqasat, with payment by bank transfer, cheque or purchase order. A school or ministry ordering several receivers can request a single quotation covering the units, power supplies and any extension cables. Each unit ships with one power supply and two antennas, and the manufacturer's warranty for this model is 2 years.