Ashly MX-508 Operating Manual - Page 9

Browse online or download pdf Operating Manual for Music Mixer Ashly MX-508. Ashly MX-508 12 pages. 8-channel, mic/line mixer
Also for Ashly MX-508: Technical Notes & Specifications (2 pages), Operating Manual (12 pages), Operating Manual (16 pages), Specification Sheet (2 pages)

Ashly MX-508 Operating Manual
8. TROUBLESHOOTING TIPS

8 .1 No Sound

Check the AC power . Is the power switch LED 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, or else the Output Mute switches are pressed . If there
is no meter activity, check to see you really have an input signal and that it is on the desired channel, or check to see that the
meter select switch is set to Left/Right . Check that you have the master gain controls at the desired operating level and that the
output mute switches are out .

8 .2 Distorted Sound

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 .

8 .3 Excessive Noise

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 .

8 .4 Excessive hum

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 .
If you need help, get in touch with your Ashly dealer or call an Ashly technical service representative at 1-800-828-6308 .
Operating Manual - MX-508 Stereo Microphone/Line Mixer
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