JBL EON 510 manual Trouble Shooting, Symptom Likely Cause What to do

Page 27

Section 8: Trouble Shooting

Symptom

Likely Cause

What to do

No sound

Speaker not connected

Verify that speaker is connected and that the circuit is on

to active AC power

 

 

 

 

 

 

Power not switched on

Switch on power and verify that power LED is on

 

 

 

No sound, speaker is connected

Speaker power cable is faulty

Re-seat the power cable at both ends.

or improperly connected.

• Substitute a known-good power cable

to working AC power but won’t

 

 

come on.

Blown fuse

• Check fuse and replace with same type “spare fuse in holder”.

 

 

 

 

 

Signal source

• Check VU meters on the source mixer

 

(mixer, instrument, etc.)

• Verify that the tape or CD is playing.

No sound. Speaker comes on.

is not sending.

• Use headphones to verify that the instrument is actually

 

sending an audio signal

 

 

 

 

Faulty cables and connections

• Disconnect and re-seat signal cables.

 

• Replace suspected cable with a known-good cable

 

 

 

 

 

No sound with microphone

Microphone requires

The EON does not supply phantom power. Switch to a dynamic

connected directly to the

microphone, use a battery powered microphone (if possible),

phantom power

MIC/ LINE input.

use an external phantom power supply for condenser type microphones.

 

 

 

 

Signal sounds distorted and very

Excessive input signal, trying

• Reduce the output level of the source.

loud, LIMIT light is lit most of the

to exceed the capabilities of

• Turn down the level controls on the speaker.

time.

the speakers

• Use additional EON speakers.

 

 

 

 

 

Review the Owner’s Manual for your mixer and adjust controls as needed.

Signal sounds distorted even at

Mixer or other source

• Input sensitivity (gain)

moderate volumes, LIMIT light

• Channel faders

is overdriven

is not lit.

• Master faders Once this is done, review the instructions in the Quick Start

 

 

 

section of this guide.

 

 

 

 

 

• Make sure that the MIC/LINE switch is in the LINE (disengaged) position.

Lots of hiss in the sound,

 

• Reduce the level settings at speaker. Review the Owner’s Manual for

 

your mixer and adjust controls as needed.

the mixer controls are at

Improper gain structure

• Input sensitivity (gain)

very low settings.

 

 

• Channel faders

 

 

 

 

• Master faders

 

 

 

 

 

Disconnect the devices that are connected to your speaker one at a time. If

Noise or hiss heard at output.

Noisy source device

the noise goes away, the problem is with the source or the

 

 

connecting cable.

 

Improper A/C ground or

Disconnect or mute channels one at a time to isolate the problem. Refer to

Hum or Buzz that increases or

faulty equipment connected

the owner’s manual of the faulty equipment for troubleshooting help.

to mixer input

decreases when the mixer level

 

Faulty cable between source

 

controls are moved.

Substitute a known-good cable for the suspected faulty cable.

 

equipment and mixer

 

 

 

 

 

 

Improper A/C grounding, ground

• ‘Lift’ the audio ground by using an XLR/F to XLR/M adapter on one end.

 

loops

Re-route audio cables away from AC power and lighting cables.

 

 

 

 

 

• Use the balanced outputs (if available) of your mixer or source equipment

Hum or Buzz

Excessively long unbalanced

to drive your EON speakers.

 

cable run

• Use a “DI” (direct injection) box to convert your unbalanced equipment

 

 

output to a balanced output.

 

 

 

 

Improper system gain structure

Reduce the INPUT level controls and increase the output level of your

 

source devices.

 

 

The inputs from INPUT 1 and

MIX/LOOP SWITCH

 

INPUT 2 aren’t coming out of the

Set the MIX/LOOP SWITCH to the MIX position (depressed).

set improperly

OUT connector

 

 

 

 

 

 

The speaker connected to the OUT

 

 

connector goes up in volume when

MIX/LOOP SWITCH

Disengage the MIX/LOOP OUT switch, Set to LOOP.

I adjust the INPUT 3 control on the

set improperly

 

first speaker.

 

 

 

 

 

 

Microphones are pointed into

Move the speakers so they do not point at the microphone’s pickup pattern.

 

the speakers

 

 

Speakers feed back and howl

Equalizer settings

Locate the feedback frequency and reduce it using the mixer EQ or an

are incorrect

external equalizer.

when the microphone volume is

 

 

turned up

Excessive gain

Reduce the gain at the mixer and move the microphone closer

 

 

to the sound source.

 

 

 

 

 

27

Image 27
Contents Page Page Contents Welcome To The Family Before You Begin Important Information EON Power Amplifiers Operating Temperature PrecautionsWatch For These Symbols AC Power RequirementsStand Mounting Safety Precautions Mounting / Suspending EON SpeakersHearing Damage, Prolonged Exposure to Excessive SPL EON Series Speakers Declaration Of Conformity Safety And EMC Compliance SpecificationsQuick Start Packaging ContentsFeatures About the EON510Applications Block Diagram EON510 SpecificationsBack Panel Back Panel Back Panel Raise the speakers as high as possible Loudspeaker Placement and SuspensionUsing the suspension points Application Examples EON515 Simple PA Using Built-In MixerApplication Examples EON510 Small PA Using External MixerApplication Examples EON510 EON518S Simple PA Using External Mixer and SubwooferApplication Examples EON315 EON510 EON518S Simple PA Using Built-In Mixer And Adding More PowerApplication Examples EON305 EON518S PA Using Powered Mixer And Powered SubwoofersApplication Examples EON305 EON515 PA Using Powered Mixer And Powered MonitorsDaisy-Chaining a PA System Application Examples EON315 EON510 EON515Application Examples EON510 EON515 PA System With Powered Mains and Floor MonitorsUnbalanced Lines Cables and ConnectorsConnection Types Balanced LinesCables and Connectors Symptom Likely Cause What to do Trouble ShootingShipping Address Contact InformationWho Is Protected By This Warranty? Warranty InformationPart Number