Page 2 - Table of Contents
Table of Contents Welcome to Club GTi .........................................................................3About this Manual ..............................................................................3Autosound at its Best ........................................................................
Page 3 - Welcome to Club GTi; Thank you for purchasing the finest; About This Manual; Because of the performance capability; Autosound at its Best; The small size of the GTi Drivers is
Welcome to Club GTi Thank you for purchasing the finest Automotive Component Systems JBL hasever produced. As a GTi CompetitionSeries owner, you are a member of aselect group of people who enjoy the mostadvanced mobile audio products available.We call this group “Club GTi.” By sendingin the customer...
Page 4 - Designing Your System; The overall quality of any system
minimizing stray magnetic fields, thisclosed circuit magnetic assembly designconcentrates the magnetic field on thevoice coil where it provides superiorperformance. In the woofer/midrangedrivers, this high concentration of magneticpower is coupled to a 2" Edge-woundAluminum Wire Voice Coil on a ...
Page 5 - Component Placement; The location of each of the; Installation Warnings and Tips
and high frequency transducers in a highquality system, we recommend you useeither a high quality active crossover such as JBL’s GTX47, GTX4 or GTX2 to provide optimum matching to yoursubwoofer or woofer/midbass loudspeaker.If you prefer passive crossovers, werecommend that you use only high quality...
Page 6 - Mounting Instructions
Mounting Instructions Pick a mounting location after reading the recommendations in the ComponentPlacement section of this manual. Installing the GTi SystemCrossover The GTi system crossover should be mounted securely to prevent damage tothe crossover or possible loosening ofwiring connections. Choo...
Page 8 - Logo Orientation on Grille; TWEETER SURFACE MOUNT INSTALLATION
Note: The metal grille is designed so that it can be covered with grille cloth ifdesired. Simply, remove the metal grillefrom the grille frame as shown in Figure E.Then use spray adhesive to glue and wrapthe grille cloth to the metal grille. Push themetal grille with cloth back in the grilleframe. F...
Page 9 - TWEETER SURFACE ANGLE INSTALLATION
Tweeter Surface Angle MountingInstructions a) Using the Surface Angle MountTemplate at the back of the manual, drilltwo screw holes at the desired mountinglocation, making sure to choose thecorrect tweeter orientation. Secure theSurface Angle Mount Adapter with two 3 ⁄ 4 " sheet metal screws as ...
Page 10 - Flush Mount Cup; Figure H; TWEETER FLUSH MOUNT
Tweeter Flush MountingInstructions a) Use a hole saw or other tool and theFlush Mount Template at the back of thismanual to make a hole for the flush mountcup in the desired location. Secure themetal spring to the Flush Mount Cupusing one metal spring screw as shownin Figure H. Tighten the screw onl...
Page 11 - TWEETER FLUSH ANGLE
Tweeter Flush Angle MountingInstructions a) Follow steps a through c in the TweeterFlush Mounting Instructions. b) Secure the Flush Angle Mount Adapterto the Flush Mount Cup using two 5 ⁄ 16 " screws as shown in Figure J. c) Connect the 408 and 508GTi speakerwires (from the crossover) to the twe...
Page 12 - Wiring; A minimum wire gauge of 18AWG is
Wiring Use 2-conductor stranded type, insulated wire to connect the 408 and508GTi Woofer/Midrange and tweeter tothe included crossover, and the crossoverto the amplifier as shown in Figure K. A minimum wire gauge of 18AWG is recommended, with larger size suggestedfor wire runs longer than 10 feet. T...
Page 13 - System Connections; There are a variety of system options; Figure M
System Connections There are a variety of system options available with the 408 and 508GTi. Thesimplest configuration is to use the 408and 508GTi full range. Although this willyield good sound, the best performancewill be achieved in a high-end systemwhich includes subwoofers and, optionally,midbass...
Page 14 - A Note on Power Handling; As a result of their high efficiency, all; In Case of Difficulty; The most common difficulties are
used and at or above 3.5kHz if you areusing an 18 or 24dB per octave crossover.In this configuration, the crossoverssupplied with the 408 and 508GTi arenot used. For tweeter protection, a 1.5Afast acting fuse should be installed inseries with the tweeter. The maximumrecommended RMS amplifier powerro...
Page 20 - hole saw
23 Cut Hole Using2 1 / 8 -2 1 / 4 " (54mm) hole saw TWEETER FLUSHMOUNT TEMPLATE 408/508 MANUAL.QXP 7/17/98 11:21 AM Page 20
Page 21 - A Harman International Company
408GTi 508GTiAUTOMOTIVE NEOCOMPONENT SYSTINSTALLATION GU JBL Consumer Products, Inc.80 Crossways Park WestWoodbury, NY 117978500 Balboa Blvd.Northridge, CA 913291-800-336-4JBL A Harman International Company NMGP/N:306385-001 5/94 408/508 MANUAL.QXP 7/17/98 11:21 AM Page B