JBL P52c, P42c, P62c owner manual Installation Warnings and Tips, A Note on Power Handling

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 midwoofer will physically fit in the mounting location. If door mounting, check for adequate clearance with the window in both rolled-up and rolled-down positions as well as for interference with window crank and power window mechanism. If mounting elsewhere, check for clearance around rear deck torsion bars, glove box or other structural elements.

•Do not mount speakers where water may splash on the cones.

•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 clearance before considering this location!

A Note on Power Handling

As a result of their high efficiency, all JBL loudspeakers will produce reasonable vol- ume levels in the automotive environ- ment using very little amplifier power. However, the use of a small amplifier to attain very high volume levels could lead to over-driving the amplifier. 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 vol- ume 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 reli- ability, you should select an amplifier with an output rating greater than the maximum power likely to be used to gen- erate 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. This margin of reserve power will ensure that the ampli- fier will not attempt to deliver more power than its design allows. Your dealer will be happy to point out which high power JBL amplifiers are optimum for your application and listening habits. Following these guidelines will provide virtually distortion-free sound reproduc- tion and long loudspeaker life.

WARNING: Playing loud music over 120dB can permanently damage your hearing. The maximum volume levels achievable with JBL components and high power amplification may exceed safe levels for extended listening. When listening at high volume levels, always use hearing protection or turn the volume down!

06