User manual JBL REF510BLK-H

[. . . ] 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 necessary, do not attempt the installation yourself; instead ask your Authorized JBL Car-Audio Dealer about professional installation options. 2 P-4020 MADE IN THE U. S. A. P-4040 MADE IN THE U. S. A. SPEAKER OUTPUTS BRIDGE ­ L ­ + R + FUSE 20A POWER +BATT REM GND SPEAKER OUTPUTS FRONT ­ L + BRIDGE ­ R + FUSE 30A POWER +BATT REM GND 0 REAR BRIDGE 4 · Always wear protective eyewear when using tools. · When routing cables, keep input signal cables away from power cables and speaker wires. [. . . ] Do not substitute another kind. 5 6 4 30 2 5 6 LINE LEVEL INPUT L SPEAKER LEVEL IN + + R L ­ ­ AUX OUT FRONT LINE LEVEL INPUT REAR +R­ SPKR LEVEL IN REAR ­L+ AUX OUT R L +R­ ­L+ L R L R FRONT R 1 8 2 11 2V INPUT MODE MO ST 4V LEVEL . 250V XOVER LP HP FLAT 3 1 9 2V INPUT MODE MO ST 4V LEVEL . 250V 2 10 PRE OUT F+R REAR FRT FLAT LP LP INPUT FRT REAR 2V 3 FRONT XOVER LP HP FLAT REAR XOVER FLAT HP LP INPUT MODE ST MO 4V LEVEL . 250V 7 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). 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-channel on P-4020, 4-channel on P-4040). Power Connector ­ Connection for 12V +, Gnd and Rem. 7 8 11 11 8 7 7. 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. 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. Initially, turn the input sensitivity GAIN control to its minimum (counterclockwise) position. 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. (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 above. ) 1. Apply power to the audio system and play a favorite music track from CD or tape. [. . . ] If not, check the wiring, especially the remote connection from the source unit. 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. This is the maximum undistorted output level of your system, and it should not be exceeded during use. 3. [. . . ]