Audio connections
Remember to always connect and disconnect other units with the amplifier switched off.
Always use good quality cables of the appropriate type.
Take care of your connector cables, a very frequent cause of small/big problems. Check their condition
frequently. Always grip them by the connector, avoid pulling them forcefully and wind them without
forming knots or sharp bends: they will last longer this way and be more reliable.
Preventing or identifying interference
First of all, check that the amplifier is installed in a place free from industrial of RF (radio frequency)
interference.
Avoid installing your equipment very near radio or TV sets, mobile phones, etc., as these can cause
noisy interference.
When connecting the other components of your sound system, watch out for the so-called ground
loops, which could cause hum and jeopardize the amplifier’s excellent signal-to-noise and low
distortion characteristics.
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 (the so-called star system). In this case, the central point in
sound systems is the mixer.
To help identify the cause of any interference, connect the various sections of the mixer to the rest of
the equipment in the following order, listening to the resultant sound as you proceed with connection:
1. Outputs: ampl loudspeaker enclosures (master outputs);
2. Ampl monitors (AUX outputs);
3. Effects (AUX outputs or EFF send/return);
4. Inputs: instruments with line signals (keyboards, samples, recorders, etc.);
5. Microphones (lastly and one by one).
SPECIFICATIONS
DIGI-AMP300
DIGI-AMP600
Power @ 4
Ω stereo
2 x 150W
2 x 300W
Power @ 8Ω bridged
300W
600W
THD
0.50%
Frequency response
20-20,000Hz
Signal/Noise ratio
90dB
Channel isolation
75dB
Input level
0dB
Input impedance
10kΩ
Power supply
230V
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