Installation Instruction VARIODYN
®
D1 System
FB 798663.GB0 / 05.19 23
Features
• Approved in accordance with EN 54-17 (included in the EN 54-16 approval of the VARIODYN
®
D1 System)
• Up to 4 rings per DOM4-8 or DOM4-24
• Up to 500 W power per loop
• Up to 5 spurs with more than one loudspeaker per loop (including EOL)
• Easy migration of existing spurs into the loop
• Fully fail-safe if each loudspeaker is fitted with an LIM
• Replaces A/B cabling
• Partially eliminates the need for E 30 cabling (DIN VDE 0833-4, chapter 7.10)
• Various standard cable types can be used for loudspeakers
• Cable leads can be wired in parallel to increase the cable cross-section - Do not route outbound and inbound
loop conductors in the same cable or the same conduit
Amplifier Maximum number of LIMs Max loop length including spur lines
2XD250 40 1000
2XD400 64 1000
4XD250B 25 500
4XD300 40 1000
4XD500 50 1000
• No other amplifiers are approved for combination with LIMs
• Observe the maximum number of LIMs and the loop length for the amplifier used
• 20 % power reserve per amplifier should be planned in
• The maximum load is different for each amplifier and should be determined in consultation with
the Technical Support.
Three operating modes can be implemented with a DOM4-8 or DOM4-24:
Fig. 14: Operation with
Fig. 15: Operation with
Fig. 16: Mixed operation, e.g. with 2 loops
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