Operation - MEDC DB4B Technische Bedienungsanleitung

DB4B Ex d WIRING WITH OPTIONAL CAP AND/OR
Ex d units:
Connect 100V line connections to terminals marked 'line' on PCB, looping-out as required. Use supplied flying lead
along with common loop-in, loop-out connections to select required power level (see section 4 for tapping table)
Ex de units:
Connect 100V line connections to terminals 1 and 2 (loop-in, loop-out). If loop-in, loop-out functionality is required,
the two common leads must be joined together using a single crimped bootlace ferrule. Use the supplied flying lead
along with the common lead to select required power level (see section 4 for tapping table)

4.0 OPERATION

The line voltage and power rating of the unit is stated on the unit label. The speaker is available in 3 standard
power ratings from 8 watts to 25 watts and in Ex d or Ex de versions. Different sound levels can be obtained by
selecting the transformer tappings in the unit. See table below for details.
Alternatively if requested when ordered, the unit can be supplied with a direct 8Ohm connection to the driver for
connecting to a suitable audio source.
© MEDC 2014
PPTC
Transformer
Tappings
1:2
2:3
3:4
1:3
2:4
1:4
DB4B Ex de WIRING WITH OPTIONAL CAP AND/OR
Power (W)
25W 15W 8W
25.0 15.0 8.0
12.5 7.5 4.0
6.0 5.0 2.0
4.0 4.0 1.5
2.0 2.0 0.7
1.0 0.8 0.4
PPTC
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04/14