Electro-Voice ZxA1-Sub - No Sound with Microphone; Distorted Sound; Limit LED; Microphone Acoustic Feedback

22 en | Troubleshooting ZXA1 Series Loudspeaker
2022-06 | 06 | F.01U.218.487
User manual
Electro-Voice
Problem Possible Cause(s) Action
6. No sound
produced with
microphone
connected to
MIC IN
Microphone
requires phantom
power.
Use a dynamic microphone that does not require
phantom power. If using a microphone requiring
phantom power, an external phantom power
source is needed.
7. Sound is
distorted. LIMIT
LED is
constantly on or
flashing
regularly
Excessive input
level
Reduce the MASTER level or loudspeaker level
knobs to prevent limit.
Line level source
plugged into MIC
IN
Plug line level source into LINE IN.
8. Sound is
distorted. LIMIT
LED is not
blinking
Source input
(mixing console/
preamp) is
overdriven
Verify level controls of the source are properly
structured.
9. Microphone
produces
acoustic
feedback when
input level is
amplified
Incorrect gain
structure
Reduce the microphone levels at the mixing
console or input source. If the microphone is
connected directly to the speaker, reduce the
MIC LEVEL on the speaker. Positioning the
microphone close to the sound source will
increase gain-before-feedback.
Microphone
position is too
close to the front
of the speaker
Whenever possible setup the speakers so the
microphone is behind them. If using the speakers
in a monitor position, aim the speaker to the back
of the microphone.
If these suggestions do not solve your problem, contact your nearest Electro-Voice dealer or
Electro-Voice distributor.