JBL EON15 Configuration guide

Introduction and General Information
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This manual has been prepared to assist technicians with the repair and maintenance of
the JBL EON line of portable performance systems.The procedures described in this man-
ual require advanced technical experience and equipment to perform.
WARNING
There are no user-serviceable parts inside these products.Opening these
products or attempting to service may expose the user to electrical shock.
Refer servicing to qualified personnel.
Substitutions
Although many of the electronic components used in these products may be available from
electronic suppliers, some components are JBL replacements only. A product repaired with-
out JBL specified components may not meet the factory specifications.The product war-
ranty may be voided by a repair using unapproved JBL components.
Test Equipment
1) Audio Precision System One, or
Distortion Analyzer
Function Generator
2) 20MHz Oscilloscope
3) Desoldering Equipment
4) Digital Multimeter
5) High Power Load Bank
6) Variac
The complexity of the product under repair requires professional audio service equipment.
Do not attempt to repair this product without this equipment.
Factory Repair
In the U.S. and Canada: In the event that an EON product must be returned to the factory
for service, contact JBL Professional Service at [phone] for return instructions. Do
not return any merchandise without prior authorization.
Outside the U.S.: Contact the JBL Professional Distributor in your area for service
information.

Transducer Repair
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Repair Kits
Part Number Description
C8REON15 LF Cone Replacement Kit, EON15
C2REON15P LF Cone Replacement Kit, EON15P, EON15P-1/230
31385-03 Dust Dome, EON15, EON15P, EON15P-1/230 EON15PAK
D8R2418 HF Diaphragm Replacement Kit, EON15,
EON Power15, EON15P-1/230 (2418H) (315436-001X)
C2REONSUB LF Cone Replacement Kit, EON PowerSub
C8REON10-G2 LF Cone Replacement Kit, EON10
C4REON10P LF Cone Replacement Kit, Power10
No repair kit is available for the 2412H Compression Driver. Entire driver should
be replaced (P/N 125-10000-00X).
No Repair Kit is available for the M115-8 woofer. Entire driver should be replaced (124-
67001-00X)
NOTE: To recone the EON woofers, it is not necessary to disassemble
the enclosure.The woofer can be reconed from the front.
Tools and Supplies
The following items will be required to properly recone the speaker:
Screwdriver
Long-Nose Pliers
Masking Tape
MEK
Utility Knife
Teflon or Orange Stick
Gap Gauges – 0.089" (15" models only - JBL P/N 90075-.089)
0.080" (10" models only - JBL P/N 90075-.080)
An audio function generator is also required for testing purposes.
The entire recone process uses 3M 1300L adhesive. A tube is included with the recone kit.
Additional adhesive may be ordered from JBL, either by the tube (P/N 71715), or by the
quart (P/N 63376).
Cone Replacement Procedure

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Recone Procedure
1) Remove grille and inspect speaker carefully before disassembly. Look for and record
the following:
A) Model Number, Serial Number, Date Code, Customer, and Complaint
B) Obvious damage or defects
C) Rubbing / Buzzing
D) Damaged dust dome
E) Damaged cone
F) Glue bond, compliance to frame
2) Remove dust dome. Look for and record the following:
A) Voice coil rubbing in the gap
B) Evidence of cone collapse near the voice coil joint
C) Chips in the gap
3) Remove the cone assembly. Look for and record the following:
A) Coil condition: Overheated, rubbing, chip gouges, voice coil date code
B) Coil to cone and spider bond.
C) Bent or broken frame
D) Loose magnet assembly
E) Foreign material in the gap
F) Check gap concentricity with appropriate gap gauge. Be sure to check
both upper and lower gaps
4) Remove and discard the grille standoffs.
5) Cover magnet gap with tape. Scrape and sand compliance land and spider land until
clean and flat.
6) Clean all dust and dirt from speaker. Clean compliance land and spider land with MEK
or acetone.
7) Remove tape from gap and clean magnet gap with masking tape and with MEK and
a rag.
8) Unpack recone kit and inspect for damage.
9) Verify that the voice coil impedance is correct for the model under repair. 8 ohm voice
coils have a blue mark near the leads, and are used in the passive models ONLY.
10) Place Mylar tube inside the voice coil.
11) Test-fit the cone assembly to the speaker frame. Make sure the tinsel leads are
aligned with the proper terminals, and the scallops in the compliance are aligned with the
bosses on the compliance land. It may be helpful to mark the uppermost scallop. Remove
the cone assembly.
12) Apply a 3/16" (4.75mm) bead of glue to the frame at the spider land. Apply another
bead of glue to the inner edge of the compliance land.
13) Install the cone assembly, maintaining proper alignment of the leads and scallops.
14) Press the surround into the glue with Teflon or orange stick.
15) Allow at least 30 minutes for adhesive to set.
16) Press the surround into the glue again.
17) For best results, allow 24 hours to dry.
18) Remove Mylar tube from voice coil.
19) Using pliers, connect 2 tinsel leads to the terminals.

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20) Carefully position dust dome on cone.
21) Apply a heavy bead of glue around the dome.
22) Allow 30 minutes for adhesive to set, then apply another bead of glue around
the dome.
23) Install the new grille standoffs into the frame.The long standoffs are for the top holes.
24) Install the grille, using the 4 original screws.
25) Test speaker (See Test Specifications).
26 Inspect and clean the speaker. Return to service.
For EON15, EON Power15 and EON15P-1/230
NOTE:YOU MUST REMOVETHE BAFFLE FROMTHE CABINET. USE CAUTION TO
AVOID DAMAGETO THE BAFFLE GASKET AS IT CAN BE REUSED.
Tools Required
1) .040" Pin Gauge
2) #10 Torx Driver
3) Phillips Screwdriver
4) Prying Tool
5) Gap Cleaning Tape
6) High Frequency Test Station
7) Air Gun and Safety Glasses
Procedure
1) Record Model number, Serial number, Date code and compliant for
warranty information.
2) Lay the enclosure face down on a soft clean surface to avoid damage to the grille.The
woofer, or bottom of the product should be towards the front of the service table.
3) Using a Phillips head screwdriver remove the 2 screws holding the handle and remove
the handle. Remove the 16 screws holding the baffle to the rear enclosure.
4) Remove the rear enclosure from the front baffle using a pry tool. Begin by prying at the
bottom of the enclosure directly beneath the center mounting screw holes.
5) Tilt the enclosure away from the baffle so it rests on it's top. Disconnect the transformer
wires from the A.C. input board as you are tilting if these wires are long enough.
6) Pull the lead wires off the compression driver terminals.
Rediaphragm Instructions 2418H

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7) Remove the rear cover on the compression driver by removing the three(3) TORX head
screws using a #10 TORX driver. Do not discard the cover/screws.
8) Remove the diaphragm assembly from the magnet structure or cover.
9) Identify defect and record Q.A. code per JBL Professional Service Program manual.
10) Check the gap with a .040" gap gauge. Using compressed air and masking or “tuck”
tape, clean the gap thoroughly per JBL Professional rediaphragming procedures.
11) Lay the new diaphragm assembly into the magnetic gap and align the three screw
holes in the top plate with the three openings in the diaphragm assembly. ANY ORIENTA-
TION OF THE THREE HOLES IS ACCEPTABLE.
12) Be sure the diaphragm seats completely against the top plate within the guide pins.
13) Reinstall the rear cover over the diaphragm.Torgue these screws to 14 inch pounds.
14) Test the compression driver for rubs or buzzes using a 2 volt sine wave from 300Hz to
800Hz. If no buzzes are detected, then test at 2V from 1,500 Hz to 20 kHz for full range
operation and audio clarity. It will be necessary to lift the baffle to expose the horn so
listening tests can be performed accurately.
15) Reconnect the high frequency lead wires to the appropriate terminal on the compres-
sion driver.The terminals are polarized so they will fit only one way. Reconnect the trans-
former wires if they were disconnected in step 5 above.
16) Reinstall the rear enclosure on the front baffle (torque to 21 inch pounds) taking care to
ensure that the baffle gasket is not damaged. If the gasket is damaged, replace with PN#
3321167-001 (382-00036-00 for EON 10 and 10P). Reinstall the handle.
17) Perform a complete system test before returning the product to the customer.
A) Initial Setup
Connect board under test to a +/– 15V power supply at the designated connector pins.
Connect Port-one generator (or a function generator) output A to XLR input connector.
Turn generator A off. Place S201 in “Mic” position.
1) Power up board and verify that “Mic” LED, D202, lights.
Signal Input Assembly Trouble-shooting
EON Power15 and EON15P-1/230