Electro-Voice ELX200 Series, Руководство по установке

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18 en | Troubleshooting ELX200 Passive Loudspeakers
2019-04 | 02 | F.01U.326.890
Installation manual
Electro-Voice
6 Troubleshooting
Problem Possible Cause(s) Action
1. No sound Amplifier Connect a known working test loudspeaker to the
amplifier outputs. If there is no sound, verify all the
electronics are on, the signal routing is correct, the
source is active; the volume is turned up, etc.
Correct/repair/replace as necessary. If there is sound,
the problem is in the wiring.
Wiring Verify you have connected the correct cables to the
amplifier. Play something at a low level through the
amplifier. Connect the test loudspeaker in parallel with
the malfunctioning line. If the sound level is gone or is
very weak, the line has a short in it (possibly a severe
scrape, pinch, or a missed connection). Using the test
loudspeaker, move down the line and test each
connection/junction until you find the problem and
correct it. Observe proper polarity.
2. Poor
Low-Frequency
Response Loudspeakers wired
out-of-polarity When two loudspeakers are connected out of polarity,
the low frequencies will cancel each other acoustically.
Carefully observe the wire markings or tracers on your
loudspeaker wires. Verify the amplifier (+) terminal is
connected to pin 1+ of the NL4 connector and the
amplifier (-) terminal is connected to pin 1-of the NL4
connector.
3. Intermittent output
such as cracking or
distortion Faulty connection Check all connections at amplifier and loudspeakers to
ensure they are all clean and tight. If the problem
persists, check the wiring. See problem 1.
4. Constant noise
such as buzzing,
hissing or humming Defective source or
other electronic
device If noise is present, but no program material is playing,
evaluate each component as necessary to isolate the
problem. Most likely there is a break in the signal path.
Poor system
grounding or ground
loop Check and correct the system grounding, as required.
If these suggestions do not solve your problem, contact your nearest Electro-Voice dealer or
Electro-Voice distributor.