Approved Document No. DAU0000050 Rev 1 • Page 6
Approved Document No. DAU0000050 Rev 1 • Page 7
Safety precautions
Connecting the phono inputs
Connection to most televisions, DVD
players, etc, can be made using the
SCART-to-Phono lead supplied:-
Connecting the microphone input(s)
One microphone is supplied with the DL50.
This should be connected to the rear of the
amplifier as shown below:-
Ensure that the amplifier IS NOT located in areas with poor ventilation, high ambient
temperatures or high humidity. It SHOULD NOT be exposed to direct sunlight, high dust
levels or be placed next to vibrating or heat-generating equipment.
The 230Vd.c. to 12V a.c. plug-top power supply (supplied) is designed for use with the
DL50 amplifier ONLY. DO NOT use any other plug-top power supply with the DL50 and
DO NOT plug the lead into any other electrical appliances as this may cause irreparable
damage. Replacement PSUs, if required, can be ordered using the ancillary order form
attached.
DO NOT dismantle or attempt to modify the amplifier or its plug-top power supply. No
user-serviceable fuses or parts are included. For repair, consult your vendor.
Ensure the plug-top power supply’s lead, the loop cable and all relevant audio/microphone
lead(s) are fixed securely into position before operation. Do not leave any trailing leads.
For added protection, during thunderstorms or when the amplifier is to be left
unattended for prolonged periods of time, unplug the plug-top power supply from the
wall outlet.
Connecting the unit
Please refer to the safety precautions below before attempting to
make any connections or operating your DL50 loop amplifier.
An optional Phono-to-Phono
lead is available for use with
certain types of satellite and
cable TV boxes - refer to the
ancillary order form attached.
Connecting the plug-top power supply
The plug-top power supply should be
connected to a 230V d.c. wall socket and
the 12V a.c input on the rear of the amplifier:-
Connecting the loop cable
Both ends of the loop cable should be
connected to the amplifier’s loop cable
push-and-hold terminals as shown below.
Attaching the cabinet feet
The four self-adhesive rubber feet provided
in the DL50’s accessory pack should be stuck
to the underside of the amplifier as shown.
Connecting the alert input
The alert input is designed for use by specialist installers, i.e. qualified electricians, only.
When triggered (by a normally open volt-free switch across its connectors) it causes a pulsed
alert tone in the loop. This can be used to warn the user that a doorbell has rung or a fire
alarm has sounded. DO NOT attempt to use this input unless you are qualified to do so.
In domestic applications, alerting the user to a ringing doorbell, etc, can be achieved much
more easily by placing a microphone in a strategic position in the room.
Connect the loop cable by pushing one of
its prepared ends into the left terminal
and the other into the right terminal.
The push-and-hold connectors will
automatically grip the ends. Any excess
cable should be neatly tied up and placed
where it cannot be tripped over. If you
need to remove the cable at any time, you
must first insert a terminal screwdriver
into the rectangular hole
directly below the
cable insertion hole
(see right). This will
open the insertion hole
and allow the cable to
be removed.
If required, an
additional microphone
can be connected to
the amplifier’s second
microphone socket -
refer to the ancillary
order form attached.
12V
Note: it does not
matter which phono
plug goes into which
socket
Only use the plug-top power supply supplied
with your DL50 kit. Note that there are no
user-servicable parts on this power supply
and in the event of failure you must
purchase a replacement lead. Refer to the
ancillary order form attached for details.
✕
33m length of loop cable
(Note that the adhesive can
take some time to set and
therefore the amplifier should
be handled with care until it is
located in its final position).
12V
Only use the
loop cable
supplied with
your DL50/K
kit
