Beyerdynamic Opus 100 Mk II Notice D'utilisation page 27

1.7 How to install the Receiver into a 19"-Rack
One Receiver
• To mount the receiver into a 19"-rack push the optional FB-11 mounting bracket
upwards until it is firmly attached to the receiver.
Two Receivers
• Mount the connecting plates between the top and bottom of the two receivers.
• After joining the two receivers together, push the optional FB-12 mounting bracket
upwards, until it is firmly attached to the receiver.
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