JBL P-4020 User's Manual
Contents
1. PVs Ue ev INPUT MODE XOVER mo st LP HP FLAT WS 0 AN LeveL 250V Pre amp Level Output Connector Connects to other amps or processors in the signal chain flat on P 4020 flat or filtered on P 4040 Speaker Output Connector 2 chan nel on P 4020 4 channel on P 4040 Fuses P 4020 20A ATC type P 4040 30A ATC type Power Connector Connection for 12V Gnd and Rem r FRONT RE OUT FARQQEAR FRT FLATNQP LP a REAR 1 INPUT MODE ST Mi INPUT MODE XOVER MO ST Dp Lp HP FLAT N 250v l rat ean O PATAP LP NSZ 4V gi 250v 11 a A Input Mode Switch Sums left and right inputs Input Sensitivity Control Adjusts input sensitivity for pre amp level and speaker level inputs Pre amp Output Selector Switch Selects input path for pre amp output Output can be summed from front and rear inputs with no filter or filtered by the front or rear crossover 10 Rear Channel Input Selector Selects rear channel input between front input and rear input 11 Crossover Selector Determines whether the crossover is a High Pass filter HP a Low Pass filter LP or unfiltered Flat Mounting the Amplifier The2. Power Series Amplifiers P 4020 P 4040 Owner s Manual GENUINE JBL Thank you for purchasing your new 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 In addition to RCA type pre amp inputs Power Series amplifiers feature Universal Interface designed to facilitate integra tion with factory installed audio systems for distortion free performance that rivals conventional pre amp connections Included in the Universal Interface circuit is Common Sense turn on Common Sense turn on senses the common mode voltage present on the speaker outputs of factory and aftermarket radios turning on the amplifier without a separate remote wire All Power Series amplifiers feature built in electronic crossovers and pre amp outputs for easy system expansion with out requiring outboard processors Amplifier Features e 4 3 or 2 channel operation P 4040 2 or 1 channel operation P 4020 e Simultaneous stereo and mono operation e Built in 12dB oct electronic crossover e Balanced differential input e Pre amp outputs filtered on P 4040 e Oversized Floating Rail Mosfet Power Supply e Universal Interface e Common Sense turn on e Variable input sensitivity 250mV 4V e Fully complementary direct coupled discrete power amplifier circuitry e Gold plated power input and output connectors
3. codes Front Left White Front Left White with black stripe Front Right Gray Front Right Gray with black stripe Rear Left Green Rear Left Green with black stripe Rear Right Purple Rear Right Purple with black stripe Note When using the Universal Interface speaker level inputs and line level outputs the Rem terminal on the amplifier may be used as a remote out put connection and will provide power to turn on other amplifiers and proces sors in the system 3 If you are connecting your Power Series amplifier to a source unit with output voltage higher than 4V connect the output signal wires of the source unit to the Universal Interface speaker inputs Because the inputs have an impedance of 10K ohms this connec tion will provide the best noise free performance possible From IN4001 Diode Source To w In some systems it may be desirable to have two sources play simultane ously 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 Note Front and rear channels of the CD and radio must be driven into the front and rear inputs of the amplifier Use Y adapters if necessary The Universal Interface circuitry will isolate the two signals from each other while allowing them to drive the amp sim
4. e 2 Ohm stable stereo e JBL badge lights when amp is operat ing and flashes when protection circuit is activated e Made in USA About This Manual To attain maximum amplifier perfor mance we encourage you to read the remaining pages before installing and operating your new JBL Power Series amplifier Especially review the Applications section for ideas on design ing and expanding your system Also save these instructions for future refer ence Important Installation of automo tive stereo components can require extensive experience in performing a variety of electrical and mechanical pro cedures Although these instructions explain how to install a JBL Power Series amplifier in a general sense they do not show the exact installation methods for your particular vehicle If you do not have the experience necessary do not attempt the installation yourself instead ask your Authorized JBL Car Audio Dealer about professional installation options Installation Precautions and Notes e 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 F 90 C short circuits occur or current draw exceeds product specifications For best perfor mance check the intended mounting site to make sure the operating envi ronment does not create conditions that will trigger the protec
5. 020 amplifier set for tri mode operation For a FT Si i ap hP Puar Gamit Da natn Mo desired crossover frequency use fa mA fr a rim AL oo the chart on page 4 to select an inductor for the subwoofer and corresponding capacitors for left z and right speakers ost we hat Figure 5 In this expanded system a JBL P 4040 drives two pairs of 6 1 2 2 way speakers WS tn CD The JBL P 4040 s pre amp outputs feed a JBL P 4020 to drive a single 12 subwoofer in bridge mode 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 No audio Distorted audio Likely Cause Low no remote on voltage Speakers are not connected or are blown Input sensitivity is not set properly Solution Check connections turn test turn on voltage Check wiring use VOM DVM to measure speaker coil resistance See Setting Input Sensitivity on page 5 Audio lacks punch Speakers are wired with wrong polarity Check polarity of connections refer to Applications Audio cycles off and on amber protection LED JBL badge on top panel is flashing Audio cycles off and on amber protection LED on top panel is flashing A protection circuit is turning the amplifier off and on GAIN is set too high Verify the following off electrical system is betwe
6. 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 Wiring the Power Connections Refer to diagrams on page 3 for connec tor locations 1 For power remote and speaker wires strip 1 4 off one end of each jacket to reveal bare wire for insertion into the barrier strip connectors 2 Locate the 3 connection barrier strip labeled Batt Rem and Gnd Connect a black wire at least 12G to the Gnd ter minal and connect the other end to the nearest bare metal chassis component Then connect a red wire at least 12G from the vehicle s 12 volt battery ter minal to the Batt terminal on the bar rier strip Finally connect a blue wire 16G to the Rem terminal on the bar rier strip and connect the other end to the Rem output of the source unit If you are using speaker level inputs and speaker level outputs from the source disregard the previous instruction regarding the Rem terminal Wiring the Speaker Output Connections 1 Connect the speakers observing proper polarity to the speaker output barrier strip on the amplifier using at least 16G high quality speaker wire Note The to
7. ct the negative lead to your vehicle s battery Apply power to the audio system and play a favorite music track from CD or tape Note After the source unit is on the JBL badge on the top panel will illuminate indicating the amplifier is on If not check the wiring especially the remote connection from the source unit Also refer to Trouble shooting on page 7 On the source unit increase the volume control until it is approximately 3 4 of its maximum output level Slowly increase the Input Sensitivity control clockwise toward three o clock and at the same time listen to the quality of the reproduced sound At some point you ll hear distortion on the music peaks Stop the adjustment and turn it back slightly This is the maxi mum undistorted output level of your system and it should not be exceeded during use 3 After adjusting the level of the main speakers in your system you should adjust the remaining channels if you are using a P 4040 or a multi amp system for the desired system bal ance You ll find this easiest to do by adjusting the channels in the following order 1 front speakers 2 rear speak ers 3 subwoofer Elaborate multi channel systems may be complex to adjust Your local JBL installation spe cialist is the best person to help with such an adjustment Applications For your convenience we ve included several application diagrams to help you plan your own system installat
8. en 5 18Vdc temperature is not over 194 F 90 C there are no short circuits speaker loads are not less than 2 ohms 4 ohms in mono Set Input Sensitivity correctly see page 5 Fuse blows Incorrect wiring or short circuit Check connections refer to Applications Declaration of Conformity We JBL Europe A S Kongevejen 194B DK 3460 Birker d DENMARK declare in own responsibility that the products described in this owner s manual are in compliance with technical standards EN 55013 A12 8 1994 EN 55020 12 1994 A Gmc Steen Michaelsen JBL Europe A S Birker d DENMARK 3 98 Specifications P 4020 P 4040 Specifications JBL P 4020 JBL P 4040 Power Output 4 ohms 2 x 40 watts 4x 40 watts Power Output 2 ohms 2 x 50 watts 4x 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 05 Signal to Noise gt 100dB gt 100dB Maximum Current Draw 18A 40A Dimensions W x H x L 7 5 8 x 2 1 4 x 8 3 4 194 x 58 x 223mm 13 5 8 x 2 1 4 x 8 3 4 347 x 58 x 223mm JBL Consumer Products JBL 250 Crossways Park Drive Woodbury NY 11797 H A Harman International Company Part No SH1122 Made in USA
9. ion Figures 1 through 3 show how to config ure the JBL P 4020 or P 4040 for stereo bridged mono and tri mode operation For system expansion ideas see Figures 4 and 5 on the next page Note For sim plicity Figures 1 through 5 do not show power remote and input connections Many different system configurations are possible using the crossovers and pre amp outputs featured in Power Series amplifiers If you are considering expand ing your system beyond what is shown here please consult your local JBL instal lation specialist who is experienced in designing complex mobile audio systems Figure 4 In this example system the front channels of a P 4040 drive a pair of 5 1 4 2 way speak ers and the rear channels are bridged to drive a single 12 Figure 1 This wiring diagram shows a JBL P 4020 amplifier set to stereo to drive a pair of full range speakers woofer neur mone xoven MO ST K y LP He FLAT T ho U FRONT PRE OUT m pa Om tu CO teu moot xoven Fon REAR Parf meur mpar mane Lom ae Mo s ap hP Puar frii pac cp a0 CESA wae sg Figure 2 This wiring dia gram shows a JBL P 4020 amplifier set to bridge mode mono to drive a single subwoofer of a 400000 e impur mane xoven MO ST LP HP FLAT D Q N impuT MODE xover MOST P Oa Figure 3 This wiring diagram shows a JBL P 4
10. tal impedance of the speakers connected to the outputs when the amp is driven in stereo must be at least 2 ohms 2 If you are bridging the amplifier con nect the speaker wires to the terminals marked bridge observing proper polarity Note The total impedance of the speaker system to be connected to the amplifier must be at least 4 ohms in bridge mode FREQUENCY INDUCTOR CAPACITOR Crossover GdB oct LP GdB oct HP 4 ohm 4 ohm 75Hz 80mH 530uF 100Hz 6 4mH 400yF 125Hz 5 0mH 318uF 150Hz 4 2mH 265uF 175Hz 3 6mH 227uF 200Hz 3 2mH 198 UF 3 If you are running the amp in tri mode stereo and mono simultaneously to one or two pairs of satellite speakers and a subwoofer refer to the chart above to determine the capacitor and inductor values you ll need to route bass signals to the woofer and midrange and high frequencies to the satellite speakers These passive crossover components will also ensure that the impedance of the speaker sys tem doesn t drop below 2 ohms Wiring the Input Connections 1 If you are using conventional RCA input connections and a source unit with output voltage less than 4V sim ply plug the RCA plugs into the RCA jacks on the amplifier 2 If you are connecting the amplifier to a factory installed source unit or to a source unit that only has speaker level outputs connect the speaker outputs of the source to the speaker inputs on the amp observing the following color
11. tion circuit e Prior to installation turn off all audio systems and other electrical devices Also disconnect the negative lead from the vehicle s battery e At the installation site locate and make a note of all fuel lines hydraulic brake lines and electrical wiring Use extreme caution when cutting or drilling in and around these areas e Check clearances on both sides of a planned mounting surface before drilling any holes or installing any screws Remember that mounting screws can extend behind the mount ing surface Always wear protective eyewear when using tools When routing cables keep input signal cables away from power cables and speaker wires When making connections make sure that each connection is clean insulated and properly secured Observe the polarity markings on the rear panel Refer to the application drawings to set up the amplifier for operation in stereo bridged mono bi amp or tri mode con figurations If the amplifier s fuse must be replaced use only the same rating and type as a replacement Do not substitute another kind Controls and Connectors 1 Pre amp Level Input Connector Connects to line level output from the source unit Universal Interface Speaker Level Connector Connects to speaker level output from the source unit Provides Common Sense amplifier turn on when used with factory radios 2 channel on P 4020 4 channel on P 4040 P 4040
12. ultaneously Therefore switching from one source to the other is as sim ple as turning the unused source off and the other on Note you must con nect the remote turn on wire from the CD player to the Rem terminal on the amp Install a diode in the remote line from the CD player as shown in the diagram above System Setup and Adjustment Electronic Crossover The electronic crossover in the P 4020 and P 4040 should be used to route the appro priate signal to speakers intended to play only bass or only midrange and treble fre quencies The crossover slope is 12dB oct and the frequency is fixed at 80Hz Pre amp Outputs Connect these to the input connectors of other amplifiers or processors in your system Refer to the Applications sec tion for system expansion possibilities Setting Input Sensitivity Proper input sensitivity control settings on Power Series amplifiers are critical to ensure optimum performance low noise levels and maximum system reliability As a general rule controls at the front end of a system source equalizers and other processors should be set as high as possible with the amplifier input sensi tivity set as low as possible while still providing adequate volume levels Using a high signal level and a low sensitivity setting will help keep background noise in the system to a minimum Initially turn the input sensitivity GAIN control to its minimum counterclock wise position Reconne
Download Pdf Manuals
Related Search