Power Series Amplifiers Owner's Manual P-4020, P-4040

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Power Series Amplifiers

P-4020, P-4040 Owner’s Manual

GENUINE JBL

P-4020/4040 OM. 7/14/98 11:42 AM Page 1

Summary of content (8 pages)

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P-4020/4040 OM.
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P-4020/4040 OM. 7/14/98 11:42 AM Page 2 Installation Precautions and Notes 2 Thank you for purchasing your new Amplifier Features About This Manual JBL Power Series™ amplifier. Power Series amplifiers feature the latest advances in discrete-circuit topology, ensuring low distortion and superbly clean and clear sound quality.
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P-4020/4040 OM. 7/14/98 11:42 AM Page 3 P-4020 P-4040 MADE IN THE U.S.A. MADE IN THE U.S.A. SPEAKER OUTPUTS BRIDGE –+ L R + FUSE 20A SPEAKER OUTPUTS POWER +BATT REM FRONT GND – BRIDGE + L – R + FUSE 30A POWER +BATT REM GND 2 30 0 – REAR 4 • Always wear protective eyewear when using tools. • When routing cables, keep input signal cables away from power cables and speaker wires.
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P-4020/4040 OM. 7/14/98 11:42 AM Mounting the Amplifier The JBL P-4020 (or P-4040) can be mounted in virtually any location inside the vehicle. However, make sure to keep the amplifier away from heater vents or ducts. 1. At the chosen site, use the amplifier as a mounting template and mark the locations of the four mounting holes. 2. Drill a small pilot hole at each marked location. 3. Mount the amplifier and securely tighten the mounting screws.
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P-4020/4040 OM. From Source Unit 7/14/98 11:42 AM IN4001 Diode To Amp 4. In some systems it may be desirable to have two sources play simultaneously through the audio system. For instance, if you have a factory-installed radio in your car and you want to add an aftermarket CD player, you may connect the CD player to the RCA inputs of the amp and the factory radio to the Universal Interface speaker inputs.
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P-4020/4040 OM. 7/14/98 11:42 AM Page 6 MADE IN THE U.S.A. Figure 1. This wiring diagram shows a JBL P-4020 amplifier set to stereo to drive a pair of full-range speakers. SPEAKER OUTPUTS BRIDGE –+ L R FUSE 20A + POWER +BATT REM GND Figure 4. In this example system, the front channels of a P-4040 drive a pair of 5-1/4" 2-way speakers, and the rear channels are bridged to drive a single 12" woofer. MADE IN THE U.S.A.
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P-4020/4040 OM. 7/14/98 11:42 AM Page 7 Troubleshooting Use the following guide to identify symptoms and solve problems. Make sure the vehicle’s electrical system is working properly and power is reaching the JBL P-4020 (or P-4040).
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P-4020/4040 OM. 7/14/98 11:42 AM Page 8 Specifications P-4020, P-4040 Specifications JBL P-4020 JBL P-4040 Power Output, 4 ohms: 2 x 40 watts 4 x 40 watts Power Output, 2 ohms: 2 x 50 watts 4 x 50 watts Power Output, Bridged 4 ohms: 100 watts 100 watts x 2 Frequency Response: 20Hz ~ 20kHz +0dB, –1dB 20Hz ~ 20kHz +0dB, –1dB Input Sensitivity: 250mV ~ 4V 250mV ~ 4V THD + Noise (4 ohms): 0.05 % 0.