User manual JBL 408GTI

[. . . ] 408GTi 508GTi AUTOMOTIVE NEO/KEVLAR MATCHED COMPONENT SYSTEM WITH CAST FRAME INSTALLATION GUIDE Table of Contents Welcome to Club GTi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 About this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Autosound at its Best . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Designing Your System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Component Placement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Installation Warnings and Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Mounting Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Installing the GTi System Crossover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Woofer/Midrange Driver Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Mounting the 408 and 508GTi Tweeter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Tweeter Surface Mounting Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Tweeter Surface Angle Mounting Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Tweeter Flush Mounting Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Tweeter Flush Angle Mounting Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Crossover Tweeter Level Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 System Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Speaker Break-In . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 A Note on Power Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 In Case of Difficulty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Thiele-Small Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Mounting Templates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 2 Welcome to Club GTi Thank you for purchasing the finest Automotive Component Systems JBL has ever produced. As a GTi Competition Series owner, you are a member of a select group of people who enjoy the most advanced mobile audio products available. We call this group "Club GTi. " By sending in the customer information card, which you will find attached to your warranty, we will automatically register you as a Club GTi member which will give you access to exclusive Club GTi apparel and other special offers we will make available from time to time. It will be necessary to use this document as proof of purchase in the event that you ever need warranty service. [. . . ] b) Run wire from the 408 and 508GTi Crossover to the wire feed-through hole and connect the wire to the tweeter making sure to connect + to + and ­ to ­ by either soldering (preferred) or using crimp-on connectors. c) Push the tweeter down onto the mounting plate making sure to line up the bayonet tabs with the slots in the tweeter housing. d) Twist the tweeter clockwise about 1/4" to lock it into position. Mounting the 408 and 508GTi Tweeter METAL GRILLE Figure E The 408 and 508GTi Tweeter includes accessories for four different mounting configurations. Take a look at all the possibilities described in the following paragraphs, pick one, follow the steps and you'll soon be done! Note: The metal grille is designed so that it can be covered with grille cloth if desired. Simply, remove the metal grille from the grille frame as shown in Figure E. Then use spray adhesive to glue and wrap the grille cloth to the metal grille. For even better interior matching it is also possible to use plastic compatible paint to match the grille frame to the vehicle's interior. 8 Tweeter Surface Mounting Instructions a) Using the Mounting Plate Template at the back of this manual. Pick a mounting location for the tweeter making sure that speaker wire can be run to this location. Drill the holes as shown on the template in the desired mounting location. Use three 3/4" C B A Figure F TWEETER SURFACE MOUNT INSTALLATION Tweeter Surface Angle Mounting Instructions A a) Using the Surface Angle Mount Template at the back of the manual, drill two screw holes at the desired mounting location, making sure to choose the correct tweeter orientation. Secure the Surface Angle Mount Adapter with two 3/4" sheet metal screws as shown in Figure G. b) Secure the mounting plate to surface angle mount adapter using two 5/16" screws. c) Run the speaker wire from the 408 and 508GTi Crossover to the wire through hole and connect the wire to the tweeter making sure to connect + to + and ­ to ­ by either soldering (preferred) or using crimp-on connectors. d) Push the tweeter down onto the mounting plate making sure to line up the bayonet tabs with the slots in the tweeter housing. e) Twist the tweeter clockwise about 1/4" to lock it into position. D C B Figure G TWEETER SURFACE ANGLE INSTALLATION 9 Tweeter Flush Mounting Instructions a) Use a hole saw or other tool and the Flush Mount Template at the back of this manual to make a hole for the flush mount cup in the desired location. Secure the metal spring to the Flush Mount Cup using one metal spring screw as shown in Figure H. Tighten the screw only enough to keep the metal spring from falling off. b) Push the Flush Mount Cup with the metal spring into the hole that was cut in step a. c) Tighten the larger 3/4" spring mounting screw to lock the Flush Mounting Cup into the mounting hole. d) Secure the mounting plate to the Flush Mount Cup using three 5/16" screws. Connect the speaker wire from the crossover to the tweeter (see Figures I and K), making sure to observe correct polarity. e) Push the tweeter down onto the mounting plate making sure to line up the bayonet tabs with the slots in the tweeter housing. [. . . ] This will generate high distortion levels which can easily damage loudspeakers, even if the rated power of the amplifier is below the rated maximum power handling of the loudspeaker!As a general rule, do not turn up the volume control past the point where you hear distortion in the form of either signal distortion from an overdriven amplifier or mechanical noise from an overstressed speaker. For the best performance and system reliability, you should select an amplifier with an output rating greater than the maximum power likely to be used to generate the desired volume levels. If you want your system "Loud + Clear, " we suggest that you step up to a JBL power amplifier which has an RMS power rating equal to, but not exceeding, the Maximum Recommended Amplifier Power listed in the specifications of your specific JBL speaker. [. . . ]