5
INSTALLATION
Each subwoofer is supplied with a mains cable, one 5 m GLM network cable and an operating manual. Once
unpacked, place the subwoofer in a suitable location (for more details see the "Positioning" section).
Before connecting the audio signal cables, ensure that both the subwoofer and the main loudspeakers
are switched off. Connections are easier to make if you roll the subwoofer on its side with the connector
panel facing up. Use this position only for making the connections and roll the subwoofer back to its
normal upright position before use.
Connections
Audio connections
Audio connections to the subwoofer are made by XLR connectors. All audio cabling from the source must
always go first to the input connectors of the subwoofer and then on to the main loudspeakers from the
subwoofer’s output connectors. Some typical setups are shown in “Cabling examples” below.
Connect the digital audio signal cables from your signal source to the four female XLR “AES/EBU INPUT”
connectors. The inputs accept AES/EBU signal or S/P-DIF or AESid signals with suitable impedance
converters. Both Single-Wire and Dual-Wire AES/EBU formats are automatically detected and supported.
The 760A, 770A and 771A cannot be used with analog audio input signal. If the chosen audio format
includes an LFE (.1) channel, it must be connected to INPUT 4 and the “LFE IN USE” switch must be
turned to “YES” position in order to utilize the versatile LFE channel controls integrated in the subwoofer.
If there is no LFE channel to reproduce, INPUT 4 can be used for a normal full-bandwidth signal. In this
case the “LFE IN USE” switch must be turned to “NO”
Connect the signal cables for the main loudspeakers to the male “AES/EBU OUTPUT” connectors on
the subwoofer. Each of these connectors carries a high-pass filtered version of the signal(s) received by
the input connector marked with the same number. The default filtering frequency is 85 Hz. The filtering
frequency cannot be changed with the controls available in the stand-alone mode. This feature is only
available when the subwoofer is controlled by the GLM™ software.
Network, mains, bypass and remote connectors
Two “CONTROL NETWORK” RJ-45 sockets are provided to connect the subwoofer to the proprietary
Genelec loudspeaker control network. See the System Operating Manual for more information. The
mains cable may only be connected to an earthed mains power supply. The “BYPASS” 1/4” Jack provides
connection to the optional Genelec 109-400 switch to operate the Bypass function. See “DSP Subwoofer
Features” for description of this function.
