Cable Selection - E2S BEL25D Serie Manuel D'instructions

The loudspeakers should be securely bolted to a suitable
surface using the 7mm diameter boltholes in the stainless
steel U shaped mounting bracket (see figure 1). The angle
can then be adjusted in the direction that the sound is
primarily required to cover. This can be achieved by
loosening the two large bracket screws in the side of the unit,
which allow adjustment in steps of 18°. On completion of the
installation the two large bracket adjustment screws on the
side of the unit must be fully tightened to ensure that the unit
cannot move in service.
Plastic Acoustic Horn
Please see Safety Warning
in Section 7 of this manual
Figure 1
7)
Safety Warning (Electrostatic Hazard)
The acoustic horn section is made of ABS Plastic, therefore
to avoid a possible ELECTROSTACTIC CHARGE the unit
must only be cleaned with a damp cloth.
8)
Access to the Flameproof Enclosure
In order to connect the audio supply cables to the
loudspeaker it is necessary to remove the flameproof cover to
gain access to the flameproof chamber. To achieve this
remove the four M6 hexagon socket head screws (see figure
2) and withdraw the flameproof cover taking extreme care not
to damage the flameproof joints in the process.
Note the four M6 screws are Class A4-80 stainless steel
and only screws of this category can be used on these
loudspeakers. It is therefore important that these screws and
their spring washers are kept in a safe place during
installation.
On completion of the cable wiring installation the flameproof
joints should be inspected to ensure that they are clean and
that they have not been damaged during installation. Also
check that the earth bonding wire between the two casting
sections is secure and the 'O' ring seal is in place. When
replacing the flameproof cover casting ensure that it is square
with the flameproof chamber casting before inserting.
Carefully push the cover in place allowing time for the air to
be expelled. Only after the cover is fully in place, should the
four M6 Stainless Steel A4-80 cover bolts and their spring
washers be inserted and tightened down. If the cover jams
while it is being inserted, carefully remove it and try again.
Never use the cover bolts to force the cover into position.
_______________________________________________________________________________________________________________________________
European Safety Systems Ltd. Impress House, Mansell Road, Acton, London W3 7QH
Document No. IS 2423-P Issue B
Flameproof Flameproof
Chamber Cover
S/S Mounting
Bracket
17-04-02 Sheet 2 of 4
9)
Power Amplifier Selection
It is important that the loudspeakers are connected to power
amplifiers that have outputs that are compatible to the type of
loudspeaker being used. Loudspeakers with a 100V line
matching transformer fitted must be connected to a power
amplifier with a 100V line output. Low impedance 8 ohm or
16 ohm loudspeakers must be connected to amplifiers with a
suitable low impedance output. When selecting the cable size
consideration must be given to the current that each unit
draws, the number of loudspeakers on the line and the length
of the cable runs.
The following table shows the range of loudspeakers:-
Unit Type Input
Volts
BExL25D 100V Line
BExL25D 8 ohm
BExL25D 16 ohm
BExL15D 100V Line
BExL15D 8 ohm
BExL15D 16 ohm
The above table also shows the maximum AC signal voltages
at which the loudspeakers can be operated.
The current levels taken by the each loudspeaker will depend
on which output tapping has been selected (see section 13 of
this instruction manual). BExL25D 100V Line units have
output levels of 25W, 12.5W, 6W and 2W, BExL15D 100V
Line units have output levels of 15W, 7.5W, 3W and 1W.
10)

Cable Selection

When selecting the cable size consideration must be given to
the current that each unit draws, the number of loudspeakers
on the line and the length of the cable runs.
SAFETY WARNING: If the loudspeakers are used at high
ambient temperatures, i.e. over +40ºC, then the cable entry
temperature may exceed +70ºC and therefore suitable heat
resisting cables must be used, with a rated service
temperature of at least 95ºC.
sales@e2s.com
www.e2s.com
4 off M6 Cover Screws
External Earth
Terminal
Figure 2
Wattage Max.
I/P
25W 100V
25W 14.14V
25W 20V
15W 100V
15W 10.95V
15W 15.49V
Tel: +44 (0)208 743 8880
Fax: +44 (0)208 740 4200
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