JBL HLS 615 (serv.man4) Service Manual / Technical Bulletin ▷ View online
Service Bulletin
Service Bulletin JBL2001-01 - March 2001
Warranty labor rate: MINOR repair
To:
All JBL Service Centers
Models: HLS Center, HLS610, HLS810, HLS615, HLS620, HLS820
Subject: Tweeter Failure, Protection Device
If it becomes necessary to replace a tweeter in an HLS series loudspeaker, we recommend inserting a
Tweeter Protection Device in-line between the new tweeter and the crossover network:
JBL HLS speaker systems have uniquely designed drivers which require special care when removing them for
service. Please follow these guidelines when removing or replacing the components.
Tweeter Protection Device in-line between the new tweeter and the crossover network:
JBL HLS speaker systems have uniquely designed drivers which require special care when removing them for
service. Please follow these guidelines when removing or replacing the components.
Tweeter Removal, Insertion of Protection Device, and Replacement
The tweeter is mounted to the back of the horn with a unique bayonet mounting system that snaps into place.
Because the horn is permanently attached to the enclosure, it is necessary to remove the woofer to gain
access to the tweeter.
The tweeter is mounted to the back of the horn with a unique bayonet mounting system that snaps into place.
Because the horn is permanently attached to the enclosure, it is necessary to remove the woofer to gain
access to the tweeter.
Remove the woofer; reach into the woofer hole and twist the tweeter element slightly to the left. Remove the
tweeter from the back of the horn and disconnect the polarized wires. With new tweeter in hand, insert a
Tweeter Protection Device JBL part# 337341-001 in series with the positive terminal. This has a Faston
connector at both ends to make insertion easy. It is recommended the device be screw mounted as shown to
the inside of the cabinet for additional stability. (Screw not supplied – CAUTION – do not use a screw longer
than ½” in length)
Reinstalling the replacement tweeter: Center the tweeter onto the back of the horn and twist it slightly to the
right until it snaps into place. Replace the woofer.
tweeter from the back of the horn and disconnect the polarized wires. With new tweeter in hand, insert a
Tweeter Protection Device JBL part# 337341-001 in series with the positive terminal. This has a Faston
connector at both ends to make insertion easy. It is recommended the device be screw mounted as shown to
the inside of the cabinet for additional stability. (Screw not supplied – CAUTION – do not use a screw longer
than ½” in length)
Reinstalling the replacement tweeter: Center the tweeter onto the back of the horn and twist it slightly to the
right until it snaps into place. Replace the woofer.
Model
Serial number
Status
Action
HLS Center,
HLS610, HLS810,
HLS615, HLS620,
HLS615, HLS620,
HLS820
All serial numbers
affected
Tweeter protection needed
Insert tweeter protection
device when installing new
tweeter
JBL Incorporated 250 Crossways Park Dr. Woodbury, New York 11797 (516) 496-3400
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