Ashly MX-406 Kullanım Kılavuzu - Sayfa 9
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Operator Manual – MX-406 Mixer
Situation
No Sound
Distorted Sound
Excessive Noise
Excessive Hum or Noise
Note: Unshielded cables, improperly wired connections, and cable with broken strands are
the most common problems. Make sure you use good quality cable with connectors
soldered firmly on the correct pin. When in doubt, get in touch with your Ashly dealer.
Inches (Millimeters)
Action
Check the AC power. Is the power switch on and illuminated? Check the level meters. If they
are operating, either the problem is between the mixer and the later components in the
system. If there is no meter activity, check to see you really have an input signal and that it is
on the desired channel. Check that you have the master gain controls at the desired
operating level.
Something is being overdriven in the signal path. If the clip indicators are active, reduce the
channel gain controls and/or press in the pad switch on the rear panel. If the level meters are
constantly in the red, reduce the Master gain and increase the gain of components following
the mixer. There are many gain adjustments in the mixer itself and probably several others in
other system components which makes it possible to overdrive an input section and then
incorrectly try to reduce the gain of the output section. The best way to approach setting
gains is to establish the operating level of input stages first by setting their gain as high as
possible but leaving about 20dB of headroom for loud peaks, then move on to set the master
gain to produce a good meter reading. Proceed to set the gain of equalizers, limiters,
crossovers, and amplifiers following the mixer in the same manner, always working toward
the later stages of the system.
If the noise is in the form of hiss, the problem is usually due to an input stage set up for low
gain and then compensating by increasing the master gain. Check that the Pad switch is not
enabled unnecessarily. Turn up the channel gain controls and reduce the master gain.
This is usually caused by "ground loops" in the system wiring. A complex sound system with
many sources separated by significant distance and using several power outlets has many
opportunities for this problem to occur. If possible, feed everything in the system from one
power source with a common ground. Use balanced input and output connections between
widely separated components.
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Page - 9
Safety Instructions – 3
Introduction - 4
MX-406 Mixer – 5
Connectors & Cables – 5
Physical Description - 6
Installation – 7
Typical Applications - 8
Factory Configs - 8
Troubleshooting - 9
Dimensions - 9
Specifications - 10
Warranty - 11