JBL P-4020 Owner's Manual
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JBL P-4020 Owner's Manual

JBL P-4020 Owner's Manual

Jbl power series amplifiers owner's manual p-4020, p-4040
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Power Series Amplifiers
P-4020, P-4040 Owner's Manual
GE N U IN E JB L

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Summary of Contents for JBL P-4020

  • Page 1 Power Series Amplifiers P-4020, P-4040 Owner’s Manual GE N U IN E JB L...

  • Page 2: Amplifier Features

    Authorized JBL Car-Audio Dealer • Made in USA about professional installation options. Installation Precautions and Notes • The JBL P-4020 (or P-4040) has five levels of circuit protection that monitor the amplifier and will shut it down if the electrical system voltage drops below 5Vdc or exceeds 18Vdc, temper- atures are above 194°...

  • Page 3: Controls And Connectors

    3. Pre-amp Level Output Connector – Connects to line-level output from the Connects to other amps or processors source unit. in the signal chain (flat on P-4020, flat 2. Universal Interface Speaker-Level or filtered on P-4040). Connector – Connects to speaker-level 4.
  • Page 4 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.
  • Page 5 CD or tape. (Note: After the Applications source unit is on, the JBL badge (on the For your convenience, we’ve included top panel) will illuminate, indicating the several application diagrams to help you amplifier is on.
  • Page 6 Figure 5. In this expanded system, a JBL P-4040 drives two pairs of 6-1/2" 2-way speakers. FLAT The JBL P-4040’s pre-amp outputs feed a JBL P-4020 to drive a single 12" subwoofer in bridge mode. Figure 4. In this example system, the front channels of a P-4040 MADE IN THE U.S.A.

  • Page 7: Troubleshooting

    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). Symptom Likely Cause No audio Low/no remote on voltage Speakers are not connected or are blown...

  • Page 8: Specifications

    Specifications P-4020, P-4040 Specifications JBL P-4020 Power Output, 4 ohms: 2 x 40 watts Power Output, 2 ohms: 2 x 50 watts Power Output, Bridged 4 ohms: 100 watts Frequency Response: 20Hz ~ 20kHz +0dB, –1dB Input Sensitivity: 250mV ~ 4V THD + Noise (4 ohms): 0.05 %...

This manual is also suitable for:

P-4040Power series

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