JBL GTO6427, GTO937, GTO627, GTO927, GTO427 User Manual

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JBL GTO6427, GTO937, GTO627, GTO927, GTO427 User Manual

GRAND

TOURING®

SERIES

GTO327

GTO427

GTO527

GTO627

GTO637

GTO6427

GTO6527

GTO6527S

GTO6537

GTO837

GTO8627

GTO927

GTO937

multielements owner’s manual

THANK YOU

for purchasing a JBL® Grand Touring® Series automotive speakers. We’ve organized this manual to make your installation as simple and trouble-free as possible. Please read it thoroughly before proceeding. Remember to keep your sales receipt and this manual in a safe place so both are available for future reference.

INSTALLATION WARNINGS AND TIPS

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 (–) negative lead from your vehicle’s battery.

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.

INSTALLATION

UNIPOINTROTATING 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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