Speaker Placement
Because of the GT Series speakers’ ver- satile mounting options, there are many placement options which will achieve excellent sound quality in your vehicle. Please consider the following to help you get the most from your speakers.
1.The most spacious stereo image is achieved when the left and right speakers are placed as wide apart as possible.
2.The best center image will be achieved when the distance from the left speaker and the right speaker are as equal as pos- sible from your listening position. This is most easily achieved by placing the speakers as far forward as possible.
3.Treble is directional in nature. This means that high frequencies are reduced as you move off the tweeter’s axis. If possible, angle the speakers to be point- ed across the car to the listener on the opposite side. This will make each listener slightly
Figure 4
System Design
A more advanced system design can be achieved by adding a GT, GTX, GTi, or equivalent subwoofer to your GT series speakers. In this case the GT series multi- element speakers will be used as high and midbass frequency drivers and should have their extremely low frequen- cies blocked by electrical means. Active or passive crossovers can be used in order to achieve the best system fidelity and widest dynamic range. A crossover frequency of between 80Hz and 120Hz is recommended for the best imaging and widest dynamic range.
Installation Warnings and Tips
•Be careful not to cut or drill into fuel tanks, fuel lines, brake or hydraulic lines, vacuum lines or electrical wiring when working on your vehicle. Inspect behind panels before you cut or drill.
•Make sure that the speaker will physically fit in the mounting location. If door mounting, check for adequate clearance with the window in both closed and open positions as well as for interfer- ence with the window crank and power window mechanism. If mounting else- where, check for clearance around rear deck torsion bars, glove box or other structural elements.
•Do not mount speakers where they will get wet.
•Make sure that it will be easy to run connecting wires to the speakers. Trace speaker wire paths before you undertake mounting.
•Always disconnect the ground wire from the battery before doing any work on the vehicle.
CAUTION: Fuel tanks are located directly beneath the rear deck in some cars. Check for adequate speaker basket clear- ance before considering this location!
A Note on Power Handling
As a result of their high efficiency, all JBL loudspeakers will produce reason- able volume levels in the automotive environment using very little amplifier power. However, the use of a small amplifier to attain very high volume lev- els could lead to overdriving the amplifi- er. This will generate high distortion lev- els which can easily damage loudspeak- ers, even if the rated power of the ampli- fier is below the rated maximum power handling of the loudspeaker!
WARNING: Playing loud music over 120dB can permanently damage your hearing. The maximum volume levels achievable with JBL speakers combined with high power amplification may exceed safe levels for extended listening. When listening at high volume levels, always use hearing protection or
turn it down!
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