Power Series Amplifiers P-7520, P-7540, P-2510 Owner's Manual G E N U IN E J BL Amplifier Features · 4-, 3- or 2-channel operation (P-7540), 2- or 1-channel operation (P-7520), mono Class-D subwoofer channel (P-2510) · Simultaneous stereo and mono operation (P-7520, P-7540) · Built-in 12dB/oct variable electronic crossover · Balanced differential input · Front and rear summing inputs (P-2510) for non-fading bass · Pre-amp outputs with crossover (P-7520, P-7540) · Oversized Floating Rail Mosfet Power Supply · Universal Interface · Common Sense turn-on · Variable Input Sensitivity (250mV­4V) · Fully complementary, direct coupled discrete power amplifier circuitry · Ultraefficient Class-D subwoofer amplifier (P-2510) · Gold-plated power, input and output connectors · 2-Ohm stable (stereo) · JBL badge lights when amp is operating and flashes when protection circuit is activated · Made in USA Installation Precautions and Notes The JBL Power Series amplifiers have five levels of circuit protection that monitor the amplifiers and will shut them down if the electrical-system voltage drops below 5Vdc or exceeds 18Vdc, temperatures are above 194° F (90° C), short circuits occur or current draw exceeds product specifications. For best performance, check the intended mounting site to make sure the operating environment does not create conditions that will trigger circuit protection. · Prior to installation, turn off all audio systems and other electrical devices. Also disconnect the (­) negative lead from the vehicle's battery. · 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. · 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 mounting surface. Thank you for purchasing your new JBL Power SeriesTM 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 InterfaceTM, designed to facilitate integration with factory-installed audio systems for distortion-free performance that rivals conventional pre-amp connections. Included in the Universal Interface circuit is Common SenseTM 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 preamp outputs for easy system expansion without requiring outboard processors. About This Manual To attain maximum amplifier performance, 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 designing and expanding your system. Also, save these instructions for future reference. Important: Installation of automotive stereo components can require extensive experience in performing a variety of electrical and mechanical procedures. 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, do not attempt the installation yourself; instead ask your Authorized JBL Car-Audio Dealer about professional installation options. 2 P-7520 P-7540 4 SPEAKER OUTPUTS BRIDGE 5 MADE IN THE U.S.A. 6 4 6 MADE IN THE U.S.A. 5 SPEAKER OUTPUTS + FUSE 30A POWER +BATT REM GND FRONT ­ L +­ R ­ L + BRIDGE ­ R + POWER +BATT REM GND FUSE 30A FUSE 30A 30 30 REAR BRIDGE 1 · 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 configurations. · If the amplifier's fuse must be replaced, use only the same rating and type as a replacement. Do not substitute another kind. LINE LEVEL INPUT L 2 3 AUX OUT 1 LINE LEVEL INPUT 2 30 3 AUX OUT SPEAKER LEVEL IN + + R L ­ ­ SPKR LEVEL IN REAR +R­ FRONT REAR ­L+ L L +R­ ­L+ L R R R FRONT R 8 2V INPUT MODE MO ST 4V LEVEL .250V 11 80Hz XOVER LP HP FLAT 32Hz FREQ 320Hz 9 PRE OUT LP HP FLAT 8 2V INPUT MODE MO ST 6V LEVEL .250V 12 FRONT XOVER 80Hz XOVER AMP FLAT HP LP 32Hz 10 PRE OUT F+R REAR FRT FLAT LP LP 320Hz INPUT FRT REAR 12 80Hz XOVER XOVER AMP FLAT HP LP 32Hz 320Hz 8 REAR 2V 7 INPUT MODE ST MO 4V LEVEL .250V 7540 7 12 7 11 9 11 Controls and Connectors 1. Pre-amp Level Input Connector ­ Connects to line-level output from the source unit. 2. 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-7520, 4-channel on P-7540). 3. Pre-amp Level Output Connector ­ Connects to other amps or processors in the signal chain. 4. Speaker-Output Connector ­ (2-channel on P-7520, 4-channel on P-7540). 5. Fuses ­ P-7520: 30A ATC type, P-7540: 30A ATC type x 2, P-2510: 40A ATC type. 6. Power Connector ­ Connection for 12V+, Gnd and Rem. 7. Input-Mode Switch ­ Sums left and right inputs. 8. Input Sensitivity Control ­ Adjusts input sensitivity for pre-amp level and speaker-level inputs. 9. 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), Low-Pass filter (LP) or unfiltered (flat). 12. Crossover Frequency Control ­ Determines the crossover frequency for the amplifier channels (front or rear) and the pre-amp outputs. 3 P-2510 4 5 MADE IN THE U.S.A. 6 1 2 FREQUENCY Crossover FRONT INDUCTOR 6dB/oct. LP (4 ohm) 8.0mH 6.4mH 5.0mH 4.2mH 3.6mH 3.2mH CAPACITOR 6dB/oct. HP (4 ohm) 530µF 400µF 318µF 265µF 227µF 198µF SPEAKER OUTPUTS + + ­ ­ FUSE 40A POWER +BATT REM GND LINE LEVEL INPUT UNIVERSAL INTERFACE REAR +R­ REAR ­L+ L +R­ ­L+ R FRONT 8 2V 80Hz 12 75Hz 100Hz 125Hz 150Hz 175Hz 200Hz 40 4V LEVEL .250V 32Hz FREQ 320Hz Wiring the Power Connections Refer to diagrams on pages 3 and 4 for connector 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 10G) to the Gnd terminal and connect the other end to the nearest bare-metal chassis component. Then, connect a red wire (at least 10G) from the vehicle's +12-volt battery terminal to the +Batt terminal on the barrier strip. Finally, connect a blue wire (16G) to the Rem terminal on the barrier 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 total impedance of the speakers connected to the outputs when the amp is driven in stereo must be at least 2 ohms. Because the P-2510 is a single-channel amplifier, the speaker connections on the barrier strip are wired in parallel inside the amp. The total impedance of the speakers connected to the P-2510 must be at least 2 ohms.) 2. If you are bridging the amplifier, connect the speaker wires to the terminals marked "bridge, observing prop" er polarity. (Note: The total impedance of the speaker system to be connected to the amplifier must be at least 4 ohms in bridge mode.) Mounting the Amplifier The JBL P-7520, P-7540 or P-2510 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. 3. If you are running either the P-7520 or the P-7540 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 system doesn't drop below 2 ohms. The P-2510 should be used to drive woofers only as its bandwidth is limited to 20Hz ­ 320Hz. Wiring the Input Connections 1. If you are using conventional RCA input connections and a source unit with output voltage less than 4V, simply plug the RCA plugs into the RCA jacks on the amplifier. 4 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-code: 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 speaker-level outputs, the Rem terminal on the amplifier may be used as a remote output connection and will provide power to turn on other amplifiers and processors in the system.) (Note: The front and rear inputs on the P-2510 are summed to mono inside the amp, and will provide constant bass regardless of the position of source unit balance and fader controls.) 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 connection will provide the best noise-free performance possible. 4. In some systems it may be desirable to have two sources play simultaneously through the audio system. For instance, if you have a factoryinstalled 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 simultaneously. Therefore, switching from one source to the other is as simple as turning the unused source off and the other on. (Note: You must connect 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 on this page.) quency is variable from 32Hz ­ 320Hz. Pre-amp Outputs Connect these to the input connectors of other amplifiers or processors in your system. The crossover-selector switch determines which filter will be assigned to the preamp outputs. The pre-amp outputs may be High Pass (switch set to HP), Low Pass (switch set to LP) or unfiltered (switch set to Flat). The crossover-frequency is determined by the crossover frequency control and will be the same frequency as the amplifier channels affected by that control. Refer to the "Applications" section 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 sensitivity 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. From Source Unit IN4001 Diode To Amp System Setup and Adjustment Electronic Crossover The electronic crossover in the P-7520, P-7540 a ...