INSTALLATION WARNINGS AND TIPS
INSTALLATION
ABOUT THESE
INSTRUCTIONS
Installation of automotive stereo components can require extensive experience with a variety of mechanical and electrical procedures. Although these instructions explain how to install Grand Touring Series multielement speakers in a general sense, they do not show the exact installation methods for your particular vehicle. If
you do not feel you have the necessary experience, do not attempt the installation yourself – instead, ask your authorized JBL car audio dealer about professional installation options.
LOUD MUSIC AND HEARING Playing loud music in an automobile can hinder your ability to hear traffic as well as permanently damage your hearing. The maximum volume levels achievable with JBL speakers, combined with high power amplification, may exceed safe levels for extended listening. We recommend using low volume levels when driving. JBL accepts no liability for hearing loss, bodily injury or property damage as a result of use or misuse of this product.
REAR DECK PRECAUTION In some cars, the fuel tank may be located directly beneath the rear deck. Before installation, make sure there is adequate speaker basket clearance before considering this location.
INSTALLATION TIPS
•Always wear protective eyewear when using any tools.
•Turn off all audio components and other electrical devices before you start. Disconnect the
•Keep speakers in their package until final installation. When moving a speaker, always rest it with the cone or dome facing up. Never use force to install any speaker.
•Check clearances on both sides of a planned mounting surface before drilling any holes or installing any screws. Remember that the screws can extend behind the surface.
•At the installation sites, locate and make a note of all fuel lines, hydraulic brake lines, vacuum lines and electrical wiring. Use extreme caution when cutting or drilling in and around these areas.
•Before drilling or cutting holes, use a utility knife to remove unwanted fabric or vinyl to keep material from snagging in a drill bit or saw.
•For door installations, check the clearance with the windows throughout the range of the window’s travel, and verify that a mounted speaker will not interfere with the window crank or power window mechanism.
•If mounting speakers elsewhere, check for clearance around rear deck torsion bars, glove box or other structural elements.
•Do not mount speakers where they will get wet.
UNIPOINT™ ROTATING TWEETER
Figure 1. Turn the angled tweeter on the GTO527, GTO627, GTO6527, GTO8627 and GTO927 to aim the sound at the listener.
TWEETER LEVEL CONTROL Figure 2. Move the tweeter level control switch on the GTO527, GTO627, GTO637, GTO6527, GTO6537, GTO837, GTO8627, GTO927 and GTO937 to select 0dB (reference) or +3dB.
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