DAPAudio DLM-26, Product Manual

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Before connecting or disconnecting the power cord, make certain the ON / OFF switch is in the OFF
position.
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Before switching on or off make certain the sound system’s amplifiers are off or turned down: this will
avoid signal peaks, which are annoying and sometimes dangerous (particularly for speaker
enclosures).
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Avoid installing your equipment very near radio or TV sets, mobile phones, etc., as these can cause
RF (radio frequency) interference.
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When connecting the other parts of your sound system, watch out for the so-called “ground loops”.
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The best way (even if not always feasible) to avoid ground loops is to connect the electric ground of
all the equipment to a single central point (“star” system). In this case, the central point can be the
mixer.
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To avoid or solve hum and buzzing troubles, try different combinations of lifting grounds on units that
are supplied with ground lift switches or make sure all chassis are connected to earth ground, either
through the A.C. power cord ground or by the front panel rack mount screws.
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Before changing your grounds around, always turn your amplifiers down.
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Keep this user’s manual for future consultation. Also remember that the crossover will get a better
price on the secondhand market if (as well as being in good condition) it has its original
documentation and packaging.
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Always operate the unit with the AC ground wire connected to the electrical system ground.
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Do not drive the inputs with a signal level bigger, than required to drive the equipment to full output.
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In system setup, the amplifier's output power must be 50%-100% more than the loaded
loudspeakers rated power.
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Please turn off the power switch, when changing the power cord or signal cable, or select the input
mode switch.
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Sometimes, when you want to send one signal to more than one amplifier, you should use a signal
distributor.
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Extreme frequency boosts in connection with a high input signal level may lead to overdriving your
equipment. Should this occur, it is necessary to reduce the input signal level by using the INPUT
control.
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To emphasize a frequency range, you don’t necessarily have to move its respective sliding control
upward; try lowering surrounding frequency ranges instead. This way, you avoid causing the next
piece of equipment in your sound path to overdrive. You also preserve valuable dynamic reserve
(“headroom”)
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For replacement use fuses of same type and rating only.
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Prevent distortion! Make sure that all components connected to the DLM-26 have sufficient power
ratings. Otherwise distortion will be generated because the components are operated at their limits.
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Avoid ground loops! Always be sure to connect the power amps and the mixing console to the same
electrical circuit to ensure the same phase!
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If system is dropped or struck, disconnect mains power supply immediately. Have a qualified
engineer inspect for safety before operating.
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If the system has been exposed to drastic temperature fluctuation (e.g. after transportation), do not
switch it on immediately. The arising condensation water might damage your system. Leave the
system switched off until it has reached room temperature.
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Repairs, servicing and electric connection must be carried out by a qualified technician.
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WARRANTY: Till one year after date of purchase.
OPERATING DETERMINATIONS
If this system is operated in any other way, than the one described in this manual, the product may suffer
damages and the
warranty becomes void.
Any other operation may lead to dangers like short-circuit, burns, electric shock, etc.
You endanger your own safety and the safety of others!
Improper installation can cause serious damage to people and property !