Dynacord DDL 204 - Important Notes

1. I N TRODUCTION
First of all we should like to thank and congratulate you for choosing the Professional Signal Delay Line DDL 204
from DYNACORD.
The DDL 204 is a delay unit which can be configured as stereo unit with 2 x IN and 2+2 x OUT or as mono unit
with 1 x IN and 4 x OUT at will, enabling you an easy set-up of "distributed systems" of different loudspeaker
groups, distributed over the room. The different delay times of sound from the loudspeaker groups to the audience
can be compensated with the DDL 204, in order to avoid echo effects and increase speech intelligibility.
The 4 outputs of the DDL 204 allow different delays for 4 loudspeaker groups. The maximum delay time of more
than 2750 msec, allows a delay compensation of distances up to 950 m. Optionally the delay can be set as distance
im m, cm, inch, feet or as time in msec. According to requirements in the "normal" operating modes the phase can
be inverted for each output and additionally a High Shelving Filter can be used to reduce the trebles by 15 dB. The
various delays can either be edited relatively to one another or separately. 30 different configurations can be stored
in 30 user memory places.
All the DDL 204‘s inputs and outputs are electronically balanced XLR sockets. It is perfectly straightforward to
retrofit transformers as an optional feature.
In this Owner’s Manual you will find a lot more features of the DDL 204. Please read it through carefully and we
guarantee that your new Professional Signal Delay Line DDL 204 from DYNACORD will give you great pleasure.
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IMPORTANT NOTES
ATTENTION: This unit must be protected from damp because of fire risk and the possibility
of electric shocks.
1. Make sure that nothing, especially no metal objects, are inserted into the device. This
could result in a severe electric shock or malfunction.
2. If the unit is subjected to extreme fluctuations of temperature, e.g. on being transported
from outside to a heated room, condensation can form. The unit should not be used until it
has reached room temperature.
3. If water or any other liquid is spilt on to the unit accidentally, the unit should be switched off
immediately and taken to a servicing facility to be checked.
4. Make sure that the unit is always well ventilated and never exposed to direct sunlight.
5. Do not use sprays to clean the unit as they have a detrimental effect on the unit and could
ignite suddenly.
6. Inside the unit there is a battery to supply the RAM when the unit is switched off. This will
ensure that your stored USER programs do not get lost. The service life of the battery is
approx. 5 years. If the voltage drops below a minimum value, the following display appears
after switching the unit on: "Service Required, Change Internal Battery". In this case contact
the DYNACORD service center for changing the battery.
ON NO ACCOUNT SHOULD THE USER ATTEMPT TO DO THIS HIMSELF!
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