User manual JBL JBL82T

[. . . ] We have designed the JBL82T to minimize the disassembly required and to make electrical connections to any existing system as simple as possible. Please read this manual carefully before attempting installation. If you do not have the necessary tools or experience, do not attempt the installation yourself. Instead, please ask your authorized JBL car audio dealer about professional installation or visit www. JBL. com to find the nearest professional. [. . . ] Use the Left and Right navigation buttons to display a frequency between 20Hz and 100Hz, and press the Select button to select it. If you're not sure which frequency to choose, we recommend using 20Hz. Alternately, you may want to use this setting to prevent your front speakers from receiving too much bass, which can cause distortion at higher listening levels. If your front speakers are 6" or larger, we suggest a setting between 20Hz and 40Hz. If your front speakers are 5" or smaller, we suggest a setting between 40Hz and 60Hz. The JBL82T will then display Front Hi Pass Slope. This screen enables you to choose the subsonic filter's rate of attenuation. Use the Up and Down navigation buttons to highlight a filter slope, and press the Select button to select it. If you're not sure which rate to choose, we recommend using 12dB/octave. If in Step 2 you selected 1 way: Skip to , on page 29. www. jbl. com 28 CALiBrATiON/seTUP 6. If in Step 2 you selected 2 way a) The JBL82T will display Front Lo/Hi Xover. Use the Up and Down navigation buttons to highlight an attenuation rate, and press the Select button to select it. The design and performance of your front speakers determines which rate you should choose. If you're using separate tweeters (as discussed in Step 7c, above), we recommend using 24dB/octave. The JBL82T will then display Xover Setup > Sub , Front , Center. The JBL82T will then display Center, with the options None, 1 way, 2 way. Use the Up and Down navigation buttons to highlight one of these options, and press the Select button to select it. The configuration of your system's center speaker determines your choice. For example: If your center speaker system consists of a coaxial speaker or component with its own passive crossover connected to one of the JBL82T's outputs (either its speaker outputs or its line outputs connected to an outboard power amplifier), choose 1 way. If your center speaker consists of a component system where the tweeter and the midrange will each be connected to separate JBL82T output channels, choose 2 way. 29 www. jbl. com CALiBrATiON/seTUP NOTE: The available center-speaker, side-speaker and rear-speaker options will depend on the number of JBL82T channels that are available after you have set up the subwoofer and front speakers. For example, if you are using two subwoofer channels and three-way front speakers, then all eight of JBL82T's channels will have been allocated, and the only option that will be displayed for the center speaker (as well as the side and rear speakers) will be None. If you have selected a single subwoofer channel and three-way front speakers, seven of JBL82T's eight channels will have been allocated, and the options displayed for the center speaker will be None and 1. [. . . ] Reduce the Bass Control and/or Graphic EQ boost levels. We recommend never combining high levels of Graphic EQ bass-band boost with high Bass Control boost. The source player's volume control is set too low. The JBL82T's System Volume control and the head unit's volume control are not properly adjusted. www. jbl. com 44 TrOUBLeshOOTiNG sOUNd Symptom The center speaker seems too loud when you're listening to news, sports or talk radio stations. Possible Cause The JBL82T's Logic 7 processing is (by design) sending all mono information to the center speaker. [. . . ]