User manual XTANT A4004

[. . . ] to xtantify = to stand up and be heard] 3. a company of people united to apply original thinking to continually advance the spectrum of extraordinarily vivid sound reproduction, to apply innovative thought and action to questions previously considered resolved . | | 7676 South 46th Street Phoenix, Arizona 85040 (602) 431-8686 FAX (602) 431-8600 X t a n t Te c h n o l o g i e s WELCOME We would like to personally thank you for choosing Xtant Technologies equipment. Our mission is to continually provide you with the best mobile audio ­ anywhere. Our goal is to exceed your expectations. [. . . ] A second outboard fuse may be added close to the amplifier if desired. Consult your Authorized Xtant Dealer for an appropriate in-line fuse holder that meets the needs of your installation. We suggest crimping and soldering all wire connections. Insulate the connection with heat shrink to prevent a short to ground. The ground wire should be of the same gauge as the power wire. As a 'rule of thumb', use as short a length of wire as possible. Locate an area near the amplifier that is metal (the floor or an existing unused threaded bolt hole is ideal) and +12V clean the area to bare metal. Drill a pilot hole (if necessary) GROUND in the middle of this area. Inspect the area underneath to be sure you aren't drilling into wires, brake or fuel lines, etc. Terminate the wire with a ring connector and attach it to the bare metal. We suggest crimping and soldering this connection. ADJUSTING INPUT SENSITIVITY INPUT JUMPER SIGNAL LEVEL -20 dB -10 dB 0 dB +10 dB +20 dB = = = = = 10 to 17 Volts 3 to 8 Volts 1 to 3 Volts 300 mV to 1 Volt 100 to 300 mV The amplifier is shipped with the input gain set at the +10 dB position. If you do not know the output signal level of your head unit and you want to change the factory setting, simply move the jumper to the +20 dB position to increase the gain. Move the jumper to the 0, ­10 or ­20 dB position to decrease the gain. The input circuitry operates similar to a line driver by increasing the signal level when placed in the +10 and +20 dB positions. The following chart illustrates this function: 13 I N P U T V O L TA G E M U L T I P LY I N G F A C T O R INPUT JUMPER MULTIPLYING FACTOR +20 dB +10 dB 0 dB ­10 dB ­20 dB = = = = = 10 3 1 . 3 . 1 (ie: A head unit with 300mV output with input jumper @ +20dB = 3 Volts input) The input stage may be over-loaded by a high-level signal if the input gain is set too high. If this should occur, simply reduce the input sensitivity setting. USING THE BALANCED LINE CIRCUITRY The Balanced Line circuitry provides two unique features which add versatility to your head unit selection. First, the Balanced Line circuitry increases the input sensitivity to 17 Volts when receiving a signal from a balanced source and, secondly, isolates signal ground. These two features allow connection with OEM factory head units and high-powered (BTL) head units. The Balanced Line circuitry will also accept a speaker level input signal. If the head unit has a Floating Ground output, you must "enable" the Balanced Line circuitry prior to connecting the head unit. [. . . ] For technical assistance and information regarding products and/or installation, please contact Xtant's Customer Service Department from 8:00 am to 5:00 pm MST­ Monday thru Friday at: Phone: Fax: U. S. A. Toll free: (602) 431 8686 (602) 431 8600 (888) 449 8268 19 LIMITED U. S. A. WARRANTY This warranty gives you specific legal rights, and you may also have other rights which vary from state to state. Xtant Technologies (Xtant) warrants its products to be free from defects in materials and workmanship under normal use and service when the unit is installed by an Authorized Xtant Dealer as folows: electronics (4) four years from original purchase date; speakers/subwoofers (3) three years from original purchase date. [. . . ]