Sennheiser SL MCR DW Multi-Channel Receiver

The SL MCR is what a meeting room wants instead of a rack: a 180 x 180 x 45 mm box that mounts on a wall or above a ceiling, takes two or four SpeechLine Digital Wireless channels, and gets its power and its audio out over one Cat cable. PoE in, Dante out on primary and secondary ports, and an automixer already running inside so a four-mic room does not need an outboard one.

The 1.9 GHz link handles its own frequency and interference management with TDMA and space diversity, which is the reason SpeechLine gets specified in buildings where nobody will ever coordinate a band plan. Audio is 20 to 20,000 Hz with more than 120 dB(A) of dynamic range at 23 ms latency, and the link is AES 256 encrypted. The two- and four-channel versions are otherwise identical.

Channels	2 (SL MCR 2 DW) or 4 (SL MCR 4 DW)
Frequency Range	1,880 - 1,930 MHz, country-specific
Audio Frequency Response	20 - 20,000 Hz
THD	Typ. 0.1%
Dynamic Range	> 120 dB(A)
Latency	23 ms
Encryption	AES 256
Network Audio	Dante primary and secondary, 2 x RJ-45
Power	PoE IEEE 802.3af Class 3, < 15 W
Dimensions	180 x 180 x 45 mm including wall mount
Weight	560 g