JBL Speaker EON15 User Manual

22376 JBL EON15-GA Guide 9/17/02 12:30 PM Page 1  
EON15 G2 User’s Guide  
Part Number: 981-00059-00 Rev. A  
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22376 JBL EON15-GA Guide 9/17/02 12:30 PM Page 4  
Welcome  
Welcome to the family of discerning sound equipment users who have selected JBL Professional  
loudspeakers. EON is a creation of JBL, the world leader in sound reinforcement. JBL sound  
systems are used in some of the world’s most famous arenas, concert halls and clubs. In fact, JBL  
speakers are the premier choice for today’s hottest touring acts and artists. You just can’t make a  
more professional choice. This User Guide contains important information that will help you get the  
most from your JBL EON loudspeakers so please take a moment to read it and be sure to keep it  
in a safe place for future reference.  
Congratulations and thanks from all of us at JBL Professional. You have invested in the best  
portable performance system available.  
PACKAGE CONTENTS  
Your EON15 G2 system should include the following:  
• 1 User Guide  
• 1 EON15 G2 speaker  
• 1 10’ (3 m) IEC Power Cable  
• Customer Registration  
AGENCY APPROVALS AND CERTIFICATIONS  
This EON G2 System complies with all International Safety Requirements for Mains Operated  
Professional audio equipment under IEC65, and Electromagnetic compatibility, Radio interference,  
Emissions and Immunity requirements.  
BEFORE YOU BEGIN - IMPORTANT INFORMATION  
Before using your EON15 G2 speaker system please review the following for important information  
on safety and protection of your investment in quality loudspeakers.  
Mounting / Suspending EON Speakers  
EON speakers are designed for portable applications in which the speakers will be stacked directly  
on the floor, stage, speaker stands, or a solid, stable platform. Optional accessory items are  
available from JBL Professional and after-market suppliers to facilitate suspension and wall /ceiling  
mounting of EON speakers. Only those items recommended by JBL Professional should be used.  
When using these items, review all enclosed documentation and carefully follow all instructions and  
safety precautions.  
CAUTION: Suspension of speakers should be done by qualified persons following safe rigging  
standards and practices. Unsafe mounting or overhead suspension of any heavy load can result  
in serious injury and equipment damage.  
Care and Maintenance  
While your EON speakers are rugged and will provide years of service, some common sense care  
in handling will prevent damage and preserve appearance.  
• If your speakers will be frequently moved, consider a padded carrying bag (see AVAILABLE  
ACCESSORIES).  
• If your EON speakers have been subjected to prolonged exposure to extreme low temperatures,  
avoid subjecting them to heavy mechanical shock and warm the speakers up by playing at a low  
volume for one hour before playing at loud levels.  
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22376 JBL EON15-GA Guide 9/17/02 12:30 PM Page 5  
• Keep the exterior of the speaker enclosure clean. Use a damp rag with a general-purpose  
household detergent. For grease and marking tape residue, use a damp cloth with isopropyl  
alcohol or mineral spirits and wipe dry. Do not use powerful solvents like acetone, MEK, lacquer  
thinner or 1,1,1-Trichloro-ethane (household cleaning fluid). These solvents will damage painted and  
co-polymer surfaces of your speakers.  
• EON speakers are not intended for fixed installation in outdoor environments. Moisture can  
damage the speaker cone and surround, cause corrosion of electrical contacts, and create an  
electrical shock hazard. Protect your speakers from moisture. Avoid exposing the speakers to  
direct moisture. Any electrically powered device can produce dangerous shock hazards when wet  
or exposed to moisture. Keep speakers out of extended or intense direct sunlight. The driver  
suspension will prematurely dry out and finished surfaces will be degraded by long-term exposure  
to intense ultra-violet (UV) light.  
Stand Mounting  
Your EON speakers include a 35mm receptacle cup to facilitate mounting on tripod stands. When  
using stands, be sure to observe the following precautions:  
• EON speakers include a thumb-screw that can be tightened to lock the speaker to the tripod  
stand. Before mounting the speaker on the stand, be sure to loosen the screw so that it doesn’t  
prevent the pole from fully penetrating the socket.  
• Check the stand specification to be certain it is designed to support the weight of the speaker  
(see specifications). Observe all safety precautions specified by the stand manufacturer.  
• Always verify that the stand is placed on a flat, level, and stable surface.  
• Route cables so that performers, production crew, and audience will not trip over them and pull  
the speaker over.  
• Be sure to fully extend the legs of tripod type stands.  
• Position the stand so that the legs do not present a trip hazard.  
• Do not attempt to place more than one speaker on a stand designed for a single speaker.  
• Always be cautious in windy, outdoor conditions. It may be necessary to place additional weight  
(i.e. sandbags) on the base of the stand to improve stability.  
Electrical Safety  
All EON products are fitted with a detachable power cord (supplied) which connects to the AC  
mains and the back panel of the loudspeaker. The power cord has an IEC female connector on  
one end and a male mains connector on the other end. This cord is supplied specifically to  
accommodate the different worldwide safety and electrical code requirements. The power cord  
supplied with your EON product has a 3-pin type plug. Do not cut off or damage the grounding  
plug. Like any electrical appliance, your EON powered speakers should not be used in water or  
when wet.  
ABOUT THE EON15 G2  
Applications  
• Live sound reinforcement, speech and vocals, music playback in entertainment, A/V, and  
institutional venues - especially when ease of use and portability are important factors.  
• Amplification, mixing, and monitoring for electronic musical instruments.  
Features  
• The second generation of one of the most successful and influential professional speaker  
systems ever.  
• 15” Differential Drive® low-frequency driver with dual neodymium magnet for low-distortion  
and light weight.  
• 1” throat diameter JBL compression driver with titanium diaphragm and ferro-fluid cooling.  
• Bi-amplified 300 watts low-frequency and 90 watts high-frequency - actual power delivered  
to the drivers.  
• Built in 3-input mixer. One balanced mic / line input, two 1/4” phone line-level inputs.  
Two-band equalization.  
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22376 JBL EON15-GA Guide 9/17/02 12:30 PM Page 6  
• Balanced loop-through / mix output. “Daisy-chain” additional EON speakers or send the mixed  
output to a mixing console.  
• 90˚ x 60˚ (nominal) constant directivity horn.  
• Thermomaster® Total Thermal Management System®. A single piece, cast-aluminum baffle  
integrates the woofer frame, horn, and amplifier heat-sink. Air movement in the finned ports  
dissipates heat - no internal or external cooling fans are required.  
• Rugged, light-weight, black co-polymer enclosure with cast aluminum baffle.  
• Integral 35mm pole mount receptacle with securing thumb screw.  
• Multi-angle enclosure for front of house or stage monitor application.  
Tailored dynamic processing protects amplifiers and speakers from being over-driven without  
producing extreme changes in frequency response as level varies.  
• Extended low-frequency performance. Delivers powerful bass down to 39 Hz.  
Specifications  
Freq. Range (-10 dB):  
Horz. Coverage (-6 dB):  
Rated Maximum SPL:  
Dimensions (H x W x D):  
39 Hz - 18 kHz  
90˚ nominal  
Freq. Response (+3 dB): 42 Hz - 17 kHz  
Vert. Coverage (-6 dB): 60˚ nominal  
129 dB, @ 1 m (3.3 ft)  
686 mm x 430 mm x 444 mm (27 in x 17 in x 17.5 in.)  
Net Weight:  
LF Driver:  
21 kg (46 lbs.)  
Integral frame with one 15” (380 mm) driver, dual neodymium  
magnet, 2” Differential-Drive® voice-coil.  
HF Driver:  
JBL2418H-1 1” (throat diameter) compression driver with 1.75”  
diameter titanium diaphragm. Ferro-fluid cooled.  
Amplifier Power LF:  
Amplifier Power HF:  
Input 1 Sensitivity:  
300 watts @ low-frequency driver impedance.  
100 watts @ high-frequency driver impedance.  
-44 dBu to -22 dBu for rated output  
(Mic/Line switch in MIC position)  
-12 dBu to +20 dBu for rated output  
(Mic/Line switch in LINE position)  
Input 2 & 3 Sensitivity:  
Output Level:  
-18 dBu to +20 dBu for rated output  
+20 dBu (peak), Loop/Mix switch in MIX position  
Audio Connectors  
Input 1  
XLR/F, balanced  
Input 2 & 3  
Crossover Freq.  
Limiting  
1/4” Phone, balanced (TRS)  
1.5 kHz  
Low frequency amplifier controlled by dynamic filiter  
XLR/M, balanced.  
Loop/Mix Out  
EQ:  
High Frequency Shelving, +15  
Low Frequency Shelving, +15 dB  
@ 120 Hz.  
AC Input  
110 - 230 VAC, 50 - 60 Hz., 175 watts rating per UL, dectachable IEC power cable  
Frequency Response  
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22376 JBL EON15-GA Guide 9/17/02 12:30 PM Page 7  
Available Accessories  
SS2-BK  
Tripod Stand  
ESK15  
Suspension Kit for EON 15” models  
BRK15  
Bracket, adapts EON 15” models to OmniMount® brackets  
Zippered, plush-lined Cordura® bag with wheels  
Zippered, plush-lined Cordura® carrying bag.  
EON15WB  
EON15 BAG  
QUICKSTART  
QUICKSTART  
1. Refer to the “Basic Sound Reinforcement System with Stage Monitors” diagram on page 10.  
2. Turn the INPUT 1, 2, and 3 controls fully counter-clockwise.  
3. Set the MIC/LINE switch.  
• If a microphone will be connected directly to INPUT 1, set the MIC/LINE switch to the MIC  
position (depressed). The MIC LED will illuminate when power is turned on.  
• If a mixer, CD player, cassette tape, or electronic musical instrument (the “source”) will be  
connected directly to INPUT 1, set the MIC/LINE switch to the LINE position (disengaged).  
The MIC LED will not illuminate when power is turned on.  
4. Set the EQ HF and LF controls to their center detented position.  
5. Plug the power cable into a properly grounded 3-wire AC power.  
6. Plug the XLR cable from the mixer or microphone into the INPUT 1 connector.  
7. Connect unbalanced sources (if used) to the LINE 2 and LINE 3 input connectors.  
8. POWER UP PROCEDURE  
• First, switch on the power to the mixer, audio sources, or musical instruments that are  
feeding your EON15 G2.  
• Next, turn on the power switch (the front panel power indicator will illuminate).  
• Reverse this process when shutting down your system.  
9. SET VOLUME  
• If you are using an audio mixing console, refer to the manufacturer’s instructions to properly  
set gain structure.  
Turn up your sources to the level that will be used in performance and talk, sing or play into  
the system.  
• Bring the INPUT 1 control up (clockwise) until the desired volume has been reached. If you  
are using a microphone, turn the INPUT 1 control up slowly to avoid feedback.  
• If you are using the INPUT 2 and INPUT 3 inputs, bring the INPUT 2 and INPUT 3 controls  
up until the desired volume has been reached.  
10. CHECK THE PEAK LED - The PEAK indicator flashes when the loudspeaker’s on-board  
amplifiers are approaching maximum output. Occasional flashes are normal for very loud  
operation. However, if the PEAK LED stays illuminated, the sound may be distorted and it  
is an indication that more speakers or a lower performance volume may be required for  
your specific application.  
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22376 JBL EON15-GA Guide 9/17/02 12:30 PM Page 8  
CONTROLS AND CONNECTIONS  
The audio section of the EON15 G2 includes powerful features that  
enhance the flexibility of your EON15 G2 speakers.  
MIX  
LOOP  
Connectors  
O
U
T
INPUT 1  
P
U
T
This balanced input accepts a standard XLR (female) connector.  
A broad range of signals (-44 dBu to +20 dBu nominal) from  
microphones, audio mixing consoles, and electronic musical  
instruments may be connected here. When using a single audio input  
to the speaker, this is the input to use. The sensitivity of this input is  
controlled by the MIC/LINE SWITCH and the INPUT 1 rotary control.  
I
N
P
U
T
INPUT 2 & INPUT 3  
These 1/4” phone jacks are intended for use with audio devices  
including cassette tape, CD, MP3 players, computer sound-card  
outputs, electronic keyboards, and electric/acoustic musical  
instruments. INPUTS 2 and 3 are balanced (TRS) but will accept  
unbalanced inputs with no special adapters needed. The level of  
these inputs is controlled by the INPUT 2 and INPUT 3 rotary controls.  
1
MIC  
LINE  
SIGNAL  
OUT  
This XLR (male) output connector works with the MIX/LOOP SWITCH  
to provide a method of sending audio from your EON15 G2.  
2
3
Switches  
MIC/LINE  
The MIC/ LINE switch effects only INPUT 1. It selects between two  
sensitivity ranges. This switch is used to match the input sensitivity  
of the EON15 G2 with the output level of the device connected to  
INPUT 1. Depressing the MIC/LINE switch selects MIC (most sensitive).  
HF  
EQ  
CAUTION: Before adjusting this switch, be certain to rotate the INPUT  
1 control fully counter-clockwise. After the MIC/LINE switch has been  
adjusted, slowly rotate the INPUT 1 control clock-wise until the desired  
volume has been reached.  
LF  
PEAK  
• Use the MIC position (depressed) when a microphone is connected to INPUT 1.  
• Use the LINE position (disengaged) when a line level source such as an audio mixing console,  
audio playback device, or electronic musical instrument is connected to INPUT 1.  
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22376 JBL EON15-GA Guide 9/17/02 12:30 PM Page 9  
MIX/LOOP  
This switch selects the source of the signal for the OUT connector.  
CAUTION: Before adjusting this switch, be certain to set the input level control of any  
equipment connected to this output to its minimum gain (least sensitive) setting.  
• In the disengaged position, only the signal from the INPUT 1 connector is routed directly  
to the OUT connector. Changing the other settings on the audio panel will not effect the  
OUT signal. The INPUT 2 and INPUT 3 inputs will not be present at the OUT connector.  
Use this setting when you want to feed multiple EON powered speakers the same signal.  
MIX/LOOP  
(Shown in “MIX” Position)  
LOOP / MIX OUT  
TO INTERNAL  
AMPLIFIERS  
INPUT 1  
EQ  
1
2
LF HF  
2
3
3
• In the MIX position (depressed), a post-EQ blend of all inputs to the speaker (INPUT 1,  
2, and 3) will be sent to the OUT connector. Any changes to input level settings or EQ will  
affect the OUT signal. See the SYSTEM EXAMPLES section for details on how this mode may  
be used.  
Controls  
INPUT 1  
Adjusts the level of INPUT 1. Use this control to match the input sensitivity of the EON15 G2  
to the output level of the mixer, microphone, or instrument connected to INPUT 1. It is a  
common misconception that this control changes the power of a system. Your EON15 G2  
will produce its rated output power no matter where this control is set. The INPUT 1 control  
determines how much signal is required at the input in order to drive the system to full output.  
INPUT 2 & INPUT 3  
These controls adjust the level of the inputs connected to INPUTS 2 and 3.  
LF EQ  
This control allows up to 15 dB of cut or boost at 120 Hz. If the system seems too “boomy”  
or bass heavy, rotate this control counter clock-wise. If the system sounds too “thin” or lacks  
low-end power, rotate this control clock-wise. To set the low-frequency EQ to “flat” (no EQ  
cut or boost), set this control to the center detented position.  
HF EQ  
This control allows up to 15 dB of cut or boost at 5k Hz. If the system seems too “strident”  
or “tinny”, rotate this control counter clock-wise. If the system sounds too “dark” or lacks  
“brilliance”, rotate this control clock-wise. To set the high-frequency EQ to “flat” (no EQ cut  
or boost), set this control to the center detented position.  
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22376 JBL EON15-GA Guide 9/17/02 12:30 PM Page 10  
Indicators  
PEAK  
The PEAK LED (Light Emitting Diode) illuminates to indicate that the system is approaching  
clipping. The threshold for this light is actually about 2 dB below clipping. An occasional  
flickering of this light on the loudest peaks is acceptable. If this LED is on for more than the  
duration of brief dynamic peaks, the system is being overdriven. Continuously over-driving  
the system will result in unpleasant and fatiguing distortion and may lead to premature failure  
of your speaker system.  
If the PEAK LED illuminates excessively:  
• Reduce INPUT 1, 2, and 3.  
• Reduce the output level of the mixer, musical instrument, or other source connected to  
the speaker.  
• If there is a great deal of LF EQ or HF EQ boost, return the controls to the “flat” (centered)  
position.  
SIGNAL  
Illuminates to indicate a usable signal from INPUT 1.  
MIC  
This LED lights to indicate that the MIC/LINE switch is in the MIC (depressed) position.  
VOLTAGE SELECTION AND FUSES  
Changing Voltage  
Your EON15-G2 will typically be set at the factory to accommodate the power mains voltage  
in your area. Before you set up your EON15-G2 for the first time it is a good idea to verify that  
the setting of the selector is appropriate for the power in your area. In the event that you do  
need to change the voltage:  
• Make sure that the speaker is powered off and the AC is disconnected from the speaker..  
• Directly below the male IEC connector on the speaker is a voltage selector. Break the  
factory-applied seal and slide the switch to the appropriate setting.  
• Set the voltage selector switch to the 115V or 230V setting as required for your area.  
• After having reconfirmed that the correct voltage is selected, reconnect the AC (IEC connector)  
and power the unit up.  
DO NOT UNDER ANY CIRCUMSTANCES OPERATE THE UNIT WITH THE WRONG VOLTAGE  
SELECTED. DOING SO MAY RESULT IN SERIOUS DAMAGE TO YOUR SPEAKER SYSTEM  
WHICH WILL NOT BE COVERED BY WARRANTY.  
Fuse Replacement  
The EON15 G2 has no user-serviceable fuses. Failure of fuses is most frequently a symptom  
of problems requiring service by a competent technician.  
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22376 JBL EON15-GA Guide 9/17/02 12:30 PM Page 11  
APPLICATION EXAMPLES  
Basic Sound Reinforcement System with Stage Monitors  
This is the basic live sound system. The optional tripod stands will get the speakers up above the  
audience so the sound can project. The second pair of EON15P G2 speakers are used as stage  
monitors. For maximum gain before feedback, position the monitors so that they do not point  
into microphones.  
INPUT 1  
INPUT 1  
Monitor or  
Aux. Out  
Line Out  
Left & Right  
Mixer  
Loop / Mix switch in  
“Loop” Position  
OUT  
INPUT 1  
INPUT 1  
The output connectors on your mixer may differ from the illustration.  
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22376 JBL EON15-GA Guide 9/17/02 12:30 PM Page 12  
Vocal / Acoustic-Electric Guitar  
Here’s a simple set-up for a musician using an acoustic-electric guitar with a stereo pick-up and  
backing tracks to accompany live vocal performance. If stereo is not a requirement, simply omit  
the 2nd speaker  
Loop/Mix Switch  
in “Loop” Position  
OUT  
INPUT 1  
INPUT 2  
INPUT 3  
INPUT 1  
INPUT 2  
INPUT 3  
Microphone  
Acoustic-Electric  
Guitar with  
Stereo Output  
RCA (shown)  
or  
1/8” (mini-phone) jack  
Tape or CD  
Health Club Instruction  
For a simple to use system just add a headset style microphone for the instructor and a portable  
CD player. Refer to the previous “Vocal/Acoustic-Electric Guitar” diagram and omit the guitar.  
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22376 JBL EON15-GA Guide 9/17/02 12:30 PM Page 13  
DJ or Sound Reinforcement System with EON PowerSubs  
Here’s a system with EON PowerSubs added to provide additional low-frequency power. If your mixer  
has a SUM or MONO output, you can also drive the EON Powersubs from this output and use the  
volume control for the mono for bass mix effects.  
LOOP/MIX  
SWITCH IN  
LOOP  
POSITION  
LOOP/MIX  
SWITCH IN  
LOOP  
POSITION  
INPUT 1  
INPUT 1  
LOOP / MIX  
OUT  
LOOP / MIX  
OUT  
Output  
Right  
Output  
Left  
Mixer  
INPUT  
INPUT  
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22376 JBL EON15-GA Guide 9/17/02 12:30 PM Page 14  
DJ System with Passive Subwoofers  
This system combines a pair of EON15 G2 powered speakers with externally powered  
subwoofers for extra power at very low frequencies. Note that many, but not all DJ mixers use  
RCA (phono) outputs as illustrated. Your DJ mixer may use another type of connector.  
INPUT 1  
INPUT 1  
DJ Mixer  
Output - Right  
Output - Left  
High Pass Output  
Right  
High Pass Output  
Left  
Electronic  
Crossover  
*
Low Pass Output - Left  
Low Pass Output - Right  
Amplifier  
* Recomended crossover frequency = 80-150 Hz. (season to taste)  
Keyboard Amplification and Mixing  
In this set-up, the 3-channel mixer of the EON15 G2 combines the outputs from a digital piano,  
a synthesizer and a sampler. The “LOOP / MIX” switch is set to the “MIX” position and the “OUT”  
connector sends the combined signal to the main mixing console.  
Digital Piano  
Loop/Mix Switch  
in “MIX” position  
Synthesizer  
Sampler  
OUT  
To Mixing Console  
INPUT 1  
INPUT 2  
INPUT 3  
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22376 JBL EON15-GA Guide 9/17/02 12:30 PM Page 15  
TROUBLESHOOTING  
Symptom  
No sound  
Likely Cause  
What to do  
Speaker not connected to active Verify that speaker is connected  
AC power  
and that the circuit is on  
Power not switched on  
Switch on power and verify that  
power LED is on  
No sound, speaker is connected Speaker power cable is faulty or  
• Re-seat the power cable at  
both ends.  
• Substitute a known-good  
power cable  
to working AC power but won’t  
come on.  
improperly connected.  
Blown fuse  
• There are no user-serviceable  
fuses in the EON15 G2.  
Take your speaker to a  
competent servicer.  
No sound. Speaker comes on.  
Signal source (mixer, instrument, • Check VU meters on the  
etc.) is not sending.  
source mixer  
• Verify that the tape or CD is  
playing.  
• 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  
connected directly to the MIC/  
LINE 1 input.  
Microphone requires phantom  
power  
The EON15 G2 does not supply  
phantom power. Switch to a  
dynamic microphone, use a  
battery in the microphone (if  
possible), use an external  
phantom power supply.  
Signal sounds distorted and very Excessive input signal, trying to  
• Reduce the output level of  
the source.  
Turn down the level controls  
on the speaker.  
loud, PEAK light is lit most of  
the time.  
exceed the capabilities of the  
speakers  
• Use additional EON speakers.  
Signal sounds distorted even at  
moderate volumes, PEAK light  
is not lit.  
Mixer or other source is  
overdriven  
Review the Owner’s Manual for  
your mixer and adjust controls  
as needed.  
• Input sensitivity (gain)  
• Channel faders  
• Master faders  
Once this is done, review the  
instructions in the Quick Start  
section of this guide.  
Lots of hiss in the sound, the  
mixer controls are at very low  
settings.  
Improper grain structure  
• Make sure that the  
MIC/LINE switch is in the  
LINE (disengaged) position.  
• Reduce the level settings  
at speaker.  
Review the Owner’s Manual for  
your mixer and adjust controls  
as needed.  
• Input sensitivity (gain)  
• Channel faders  
• Master faders  
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22376 JBL EON15-GA Guide 9/17/02 12:30 PM Page 16  
Noise or hiss heard at output  
Noisy source device  
Disconnect the devices that are  
connected to your speaker one  
at a time. If the noise goes away,  
the problem is with the source or  
the connecting cable.  
Hum or Buzz that increases or  
decreases when the mixer level  
controls are moved.  
Improper A/C ground or faulty  
equipment connected to mixer  
input  
Disconnect or mute channels one  
at a time to isolate the problem.  
Refer to the owner’s manual of  
the faulty equipment for  
troubleshooting help.  
Faulty cable between source  
equipment and mixer  
Substitute a known-good cable  
for the suspected faulty cable.  
Hum or Buzz  
Improper A/C grounding, ground • “Telescope” the audio  
loops  
ground by using an XLR/F to  
XLR/M adapter on one end.  
• Re-route audio cables away  
from AC power and lighting  
cables.  
Excessively long unbalanced  
cable run  
• Use the balanced outputs (if  
available) of your mixer or  
source equipment to drive  
your EON speakers.  
• Use a “DI” (direct injection)  
box to convert your  
unbalanced equipment output  
to a balanced output.  
Improper system gain structure  
Reduce the INPUT 1, 2 and 3  
controls and increase the output  
level of your source devices.  
The inputs from INPUT 2 and  
INPUT 3 aren’t coming out of  
the OUT connector  
MIX/LOOP SWITCH set  
improperly  
Set the MIX/LOOP SWITCH to  
the MIX OUT position  
(depressed). See the CAUTION  
in the “Switches” section of this  
manual.  
The speaker connected to the  
OUT connector goes up in  
volume when I adjust the INPUT  
1 control on the first speaker.  
MIXED/LOOP SWITCH set  
improperly  
Disengage the MIX OUT switch.  
See the CAUTION in thedown in  
“Switches” section of this  
manual.  
Speakers feed back and howl  
when the microphone volume is  
turned up  
Microphones are pointed into the Move the speakers so they do  
speakers  
not point the microphone’s  
pickup pattern.  
Equalizer settings are incorrect  
Locate the feedback frequency  
and reduce it using the mixer EQ  
or an external equalizer.  
Excessive gain  
Reduce the gain at the mixer and  
move the microphone closer to  
the sound source.  
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22376 JBL EON15-GA Guide 9/17/02 12:30 PM Page 17  
REFERENCE  
Connections - Balanced and Unbalanced  
There are two basic types of audio system interconnections for audio signals: Balanced and  
Unbalanced. Your EON15 G2 can accept either type of input.  
Balanced Lines  
In audio, a balanced line is a three-conductor system in which the two signal wires carry an equal,  
but opposite voltage with respect to the ground wire. The ground wire acts only as a shield and  
does not carry any audio signal current. Outside interference (such as RFI - Radio Frequency  
Interference) is either shielded from the internal signal conductor, or if it gets into the cable is  
cancelled out by the opposite signals at the receiving end. Balanced connections are preferred for  
any longer cable runs.  
Unbalanced Lines  
Unbalanced cable is a two-wire system where the shield (ground wire) acts as one of the current  
carrying signal conductors. The center conductor enclosed by the shield is commonly known as  
the “hot” conductor. Unbalanced audio cables do not reject noise as well as balanced lines.  
Unbalanced lines are typical in home hi-fi type systems and on the outputs of electronic musical  
instruments. These work well if the distance between the components is short, the signal level is  
relatively high and all of the electronics used in the system are plugged into the same AC service.  
Unbalanced Sources to EON Powered Loudspeakers  
If you need to connect your EON speakers to an unbalanced source you have two options:  
• Use the LINE 2 and LINE 3 connectors. These inputs are balanced but will accept unbalanced  
inputs without the need for any special adapters.  
• Use an adapter or special cable (see the section “Cables and Connectors”)  
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22376 JBL EON15-GA Guide 9/17/02 12:30 PM Page 18  
Cables and Connectors  
XLR/F to XLR/M Microphone Cable  
The standard cable for interconnection of microphone and line level signal  
in professional audio systems.  
• Microphone to mixer  
• Microphone to EON15 G2 INPUT 1  
• Professional audio mixer to EON15 G2 INPUT 1  
• “Daisy chaining” EON15 G2 speaker systems  
TRS (Balanced) 1/4” Phone to XLR/M  
For connecting balanced devices with 1/4” connector to EON XLR input.  
TRS (Unbalanced) 1/4” Phone to XLR/M For connection of instruments with unbalanced outputs to balanced XLR input.  
• Sources (signal processors, electronic instruments) with 1/4” unbalanced outputs  
to amps, processors, and powered speakers with balanced XLR/F inputs.  
TS (Unbalanced) 1/4” Phone XLR/M  
XLR/M to RCA (phono) cable  
This cable is electrically identical to “TRS (unbalanced) 1/4” Phone to XLR/M  
above and may be used interchangeably.  
Connects consumer audio products and some DJ mixer outputs to professional  
audio equipment inputs.  
TS (Unbalanced) 1/4” Phone  
(phono) cable  
• Connects outputs of consumer audio equipment to unbalanced line inputs of  
EON15 G2 and many mixers  
• Connects unbalanced line outputs to many mixers to the inputs of consumer  
audio recorder.  
TRS1/4” Phone to dual 1/4” Phone  
Splits a stereo output into separate left/right signals.  
• Connects stereo electric guitar to two unbalanced audio inputs.  
• Connects a headphone output to two unbalanced audio inputs.  
• Change to a TRS mini-phone to connect to the output of portable CD  
players and computer sound cards to a mixer or powered speakers.  
Also used to connect signal processors to the “insert” of many mixing consoles.  
XLR/F to XLR/M Audio Ground Lift  
Used to “telescope” a ground to eliminate hum caused by “ground loops”. For  
use only with balanced inputs and outputs.  
XLR/F to XLR/M Microphone Cable  
1
2
3
1 (shield)  
2
3
TRS (Balanced) 1/4” Phone to XLR/M Cable  
TRS (Unbalanced) 1/4” Phone to XLR/M Cable  
TS (Unbalanced) 1/4” Phone to XLR/M Cable  
XLR/M to RCA (phono) Cable  
Tip  
Ring  
Sleeve  
1 (shield)  
2
3
Tip  
Ring  
Sleeve  
1 (shield)  
2
3
Tip  
1 (shield)  
2
3
Sleeve  
1
2
3
Center  
Shield  
TS (Unbalanced) 1/4” Phone to RCA (phono) Cable  
TRS 1/4” Phone to dual TS 1/4” Phone  
Tip  
Sleeve  
Center  
Sleeve (shield)  
Tip  
Tip  
Ring  
Sleeve (shield)  
Sleeve  
Tip  
Sleeve (shield)  
XLR/F to XLR/M Audio Ground Lift  
1
2
3
1 (no connection)  
2
3
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22376 JBL EON15-GA Guide 9/17/02 12:30 PM Page 19  
Loudspeaker Placement and Mounting  
The following guidelines will help you achieve optimum sound wherever you use your  
EON loudspeakers:  
Raise the speakers as high as possible. For best results try to get the high frequency horn at  
least 2 to 4 feet above the heads of the audience. If the speakers are too low, the people in the  
back of the audience will not receive the best quality of sound.  
Place the speakers between the microphones and the audience. Feedback occurs when the  
microphones pick up sound from the speakers and “feed” the sound back through the sound  
system. If space is limited, point the speakers away from the microphones to reduce feedback.  
Locate the speakers away from turntables. Low-frequency feedback occurs when the output  
of the speaker is picked up by the tone arm of the turntable and is re-amplified. A heavy, solid  
turntable base and shock mounting can also reduce this type of feedback in DJ applications.  
Use more speakers in large or highly reverberant spaces. Spreading speakers throughout  
these spaces will produce much better sound than trying to compensate with loudness  
level or equalization. For very long distances, the use of another set of speakers on a delay  
is recommended.  
Stand speakers upright for PA - Tilt the speakers back for stage monitoring. Upright stance  
provides even coverage over a wide area. EON speakers are also designed with two slanted  
positions for stage monitoring applications.  
BLOCK DIAGRAM  
LOOP  
MIX  
PEAK  
OUT  
INPUT1  
SIGNAL  
HPF  
90W  
INPUT1  
SUM  
EQ  
LINE  
MIC  
LPF  
&
DYNAMIC  
FILTER  
300W  
LOW HIGH  
MIC  
INPUT2  
INPUT2  
INPUT3  
INPUT3  
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22376 JBL EON15-GA Guide 9/17/02 12:30 PM Page 20  
JBL LIMITED WARRANTY  
The JBL Limited Warranty on professional loudspeaker products (except for enclosures) remains  
in effect for five years from the date of the first consumer purchase. JBL amplifiers are warranted  
for three years from the date of original purchase. Enclosures and all other JBL products are  
warranted for two years from the date of original purchase.  
Who Is Protected by This Warranty?  
Your JBL Warranty protects the original owner and all subsequent owners so long as: A.) Your  
JBL product has been purchased in the Continental United States, Hawaii or Alaska. (This  
Warranty does not apply to JBL products purchased elsewhere except for purchases by military  
outlets. Other purchasers should contact the local JBL distributor for warranty information.);  
and B.) The original dated bill of sale is presented whenever warranty service is required.  
What is Covered by the JBL Warranty?  
Except as specified below, your JBL Warranty covers all defects in material and workmanship.  
The following are not covered: Damage caused by accident, misuse, abuse, product modification  
or neglect; damage occurring during shipment; damage resulting from failure to follow instructions  
contained in your Instruction Manual; damage resulting from the performance of repairs by  
someone not authorized by JBL; claims based upon any misrepresentations by the seller; any  
JBL product on which the serial number has been defaced, modified or removed.  
Who Pays for What?  
JBL will pay all labor and material expenses for all repairs covered by this warranty. Please be  
sure to save the original shipping cartons because a charge will be made if replacement cartons  
are requested. Payment of shipping charges is discussed in the next section of this warranty.  
How to Obtain Warranty Performance  
If your JBL product ever needs service, write or telephone us at JBL Incorporated (Attn:  
Customer Service Department), 8500 Balboa Boulevard, PO. Box 2200, Northridge, California  
91329 (818/893-8411). We may direct you to an authorized JBL Service Agency or ask you  
to send your unit to the factory for repair. Either way, you’ll need to present the original bill of  
sale to establish the date of purchase. Please do not ship your JBL product to the factory without  
prior authorization. If transportation of your JBL product presents any unusual difficulties, please  
advise us and we may make special arrangements with you. Otherwise, you are responsible for  
transporting your product for repair or arranging for its transportation and for payment of any  
initial shipping charges. However, we will pay the return shipping charges if repairs are covered  
by the warranty.  
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22376 JBL EON15-GA Guide 9/17/02 12:30 PM Page 21  
Limitation of Implied Warranties  
ALL IMPLIED WARRANTIES, INCLUDING WARRANTIES OF MERCHANTABILITY AND  
FITNESS FOR PARTICULAR PURPOSE, ARE LIMITED IN DURATION TO THE LENGTH OF  
THIS WARRANTY.  
EXCLUSION OF CERTAIN DAMAGES  
JBL’S LIABILITY IS LIMITED TO THE REPAIR OR REPLACEMENT, AT OUR OPTION, OF ANY  
DEFECTIVE PRODUCT AND SHALL NOT INCLUDE INCIDENTAL OR CONSEQUENTIAL  
DAMAGES OF ANY KIND. SOME STATES DO NOT ALLOW LIMITATIONS ON HOW LONG AN  
IMPLIED WARRANTY LASTS AND/OR DO NOT ALLOW THE EXCLUSION OF INCIDENTAL  
OR CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATIONS AND EXCLUSIONS MAY  
NOT APPLY TO YOU. THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS, AND YOU  
MAY ALSO HAVE OTHER RIGHTS WHICH VARY FROM STATE TO STATE.  
JBL PROFESSIONAL CONTACT INFORMATION  
Mailing Address  
8500 Balboa Blvd.  
Northridge California 91329  
Customer Service  
Monday through Friday 8:00am - 5:00pm Pacific Coast Time  
In the U.S.A. (800) 8JBLPRO (800.852.5776)  
On the World Wide Web  
© Copyright 2000 JBL Professional  
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22376 JBL EON15-GA Guide 9/17/02 12:30 PM Page 22  
Notes  
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22376 JBL EON15-GA Guide 9/17/02 12:30 PM Page 23  
Notes  
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22376 JBL EON15-GA Guide 9/17/02 12:30 PM Page 24  
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