User manual DEI 1100D

[. . . ] They may also impair a driver's ability to hear traffic sounds or emergency vehicles. Use common sense and practice safe listening habits when listening to or adjusting your audio system. © 1999 Directed Electronics, Inc 1 INSTALLATION GUIDELINES 1. Please read the owner's manual carefully before you install the amplifier. Disconnect the battery ground terminal prior to making any electrical connections. [. . . ] RCA INPUT JACKS - accepts linelevel outputs from head units or signal sources at voltages from 200 mV to 8 volts. RCA INVERT IN JACK - use this jack to accept signal from another 600d/1100d when operating in synced slave mode. This jack also supplies an in-phase output when the unit is set to "Master". RCA INVERT OUT JACK - use this jack to send an inverted phase signal to another 600d/1100d operating in synced slave mode. MASTER/SLAVE INVERT SWITCH selects operating mode for synced operation. GAIN ADJUSTMENT - controls the gain (input sensitivity) of the amplifier. SUBSONIC FILTER - Switchable variable subsonic filter prevents damage to subwoofers in vented and free-air applications. BASS EQ - This switch activates an 8 dB bass boost circuit. Use as necessary for low frequency enhancement. CROSSOVER FREQUENCY - controls the cutoff frequency of the built-in low-pass crossover. OUTPUT PHASE INVERT SWITCH controls the output phase of the amplifier. The output signal inverts with the switch set to 180. REMOTE SUB LEVEL - controls gains of the amplifier. FIGURE 2--AMPLIFIER CONTROLS © 1999 Directed Electronics, Inc 5 SPEAKER WIRING DIAGRAMS Single subwoofer connection Speaker nominal impedance must be at least 1 ohm. Two subwoofer connection Parallel speaker nominal impedance must be at least 1 ohm. Amplifier parallels the speaker terminals internally. 6 © 1999 Directed Electronics, Inc CROSSOVER SETTINGS AND GAIN ADJUSTMENT Your Directed Audio power amplifier needs to be adjusted carefully to achieve maximum performance. These are some guidelines to follow when fine-tuning the amplifier. Refer to the additional instructions on pages - for gain and crossover settings in external synced mode. · Because the 600d/1100d are only suited for subwoofer applications, the low-pass crossover is active at all times. The crossover point is adjustable to allow more precise system operation. · Try and keep the setting low enough to prevent image smearing (you should not be able to hear male voices from the subwoofer) but not so low as to create a gap between the subwoofer and the mid-bass/midrange speakers. It will be to your advantage to spend some extra time with this adjustment, listening to familiar music or system set-up discs to achieve the kind of musical reproduction that you prefer. · The gain adjustment allows you to set proper signal match for clean, quiet amplifier operation. Start by playing some music you are familiar with. [. . . ] This warranty is non-transferable and does not apply to any unit that has been modified or used in a manner contrary to its intended purpose, and does not cover damage to the unit caused by installation or removal of the unit. This warranty is void if the product has been damaged by accident or unreasonable use, neglect, improper service or other causes not arising out of defects in materials or construction. ALL WARRANTIES INCLUDING BUT NOT LIMITED TO EXPRESS WARRANTY, IMPLIED WARRANTY, WARRANTY OF MERCHANTABILITY, FITNESS FOR PARTIC® ULAR PURPOSE, AND WARRANTY OF NON-INFRINGEMENT OF INTELLECTUAL PROPERTY ARE EXPRESSLY EXCLUDED TO THE MAXIMUM EXTENT ALLOWED BY LAW, AND DEI NEITHER ASSUMES NOR AUTHORIZES ANY PERSON TO ASSUME FOR IT ANY LIABILITY IN CONNECTION WITH THE SALE OF THE PRODUCT. DEI HAS ABSOLUTELY NO LIABILITY FOR ANY AND ALL ACTS OF THIRD PARTIES INCLUDING ITS AUTHORIZED DEALERS OR INSTALLERS. [. . . ]