Operation - Eaton DB4B UL Manuel Technique

Loudspeaker – DB4B UL
English
Wiring details
DB4B STANDARD 70V LINE WIRING
DB4B DIRECT CONNECTION (8Ω) WIRING
For standard 70V line units (Note: units with other line
voltages are available if specified when ordering), connect
power conections to numbered terminals to obtain the
required power rating (see section 4 for tapping table). For
loop-out connections, use second set of numbered terminals.
For direct connection 8 Ohm units, connect power from
amplifier to terminals as detailed, taking note of maximum
loudspeaker rating. Use second pair of terminals for
loop-out connections as required.
2
Loudspeaker – dB4B uL TM262 April 2020 www.eaton.com
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DB4B 100V/70V/25V LINE WITH OPTIONAL CAP AND/OR
PPTC
Connect 70V 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).

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. 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.
Transformer
tappings
1:2
2:3
3:4
1:3
2:4
1:4
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