User manual JBL 940T

[. . . ] Disconnect the (­) negative lead from your vehicle's battery. When moving a speaker, always rest it with the cone or dome facing up. [. . . ] · Check clearances on both sides of a planned mounting surface before drilling any holes or installing any screws. · 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. Caution: In some cars, fuel tanks may be located directly beneath the rear deck. Check for adequate speaker basket clearance before considering this location!· Before drilling or cutting holes, use a utility knife to remove unwanted fabric or vinyl in order to keep material from snagging in a drill bit or saw. Remember to keep your sales receipt with this manual in a safe place so both are available for future reference. Note: The DS75 speakers are designed for direct replacement of factory speakers. Therefore, they do not contain the grilles and trim ring shown in Fig 1. Installation of these models simply entails reversing the steps taken to remove the original speakers. 2 Specifications JBL Decade Series 940T Type: Speaker Impedance: Recommended Amplifier Power Range: Frequency Response: Sensitivity (@ 2. 83V, 1 meter): Mounting Depth, Drop-in: Cut-Out Diameter: 4" 2-Way 4 ohms 5 ­ 50 watts 100Hz ~ 20kHz 91dB 1-11/16" (43mm) 3-13/16" (97mm) DS50 5-1/4" 2-Way 4 ohms 5 ­ 60 watts 75Hz ~ 20kHz 92dB 1-3/4" (45mm) 4-5/8" (118mm) DS60 6-1/2" 2-Way 4 ohms 5 ­ 75 watts 65Hz ~ 20kHz 92dB 1-13/16" (47mm) 5-1/16" (129mm) DS75 5" x 7"/6" x 8" 2-Way 4 ohms 5 ­ 100 watts 50Hz ~ 20kHz 93dB 2-3/16" (56mm) 5" x 7-3/16" (127mm x 183mm) DS96 6" x 9" 3-Way 4 ohms 5 ­ 100 watts 45Hz ~ 20kHz 93dB 2-15/16" (75mm) 6-1/16" x 8-3/4" (154mm x 223mm) A Note on Power Handling JBL Decade Series speakers are designed to produce reasonable volume levels with little amplifier power. However, the addition of an amplifier to drive your speakers and a subwoofer will enhance the dynamic range of your system, and help overcome the ambient noise in a moving vehicle. These speakers are designed to handle the power of a dedicated amplifier driven at or below its rated power. If an amplifier is driven far above its rated power, the output signal will "clip, and the additional " power present in a clipped signal can damage any speaker. [. . . ] If an amplifier is driven far above its rated power, the output signal will "clip, and the additional " power present in a clipped signal can damage any speaker. Distorted or "fuzzy" sound from your speakers is an indication that the amplifier has exceeded its rated power, and you should reduce the volume level. General Care The loudspeaker grilles may be cleaned with a slightly damp cloth. [. . . ]