User manual XTANT X104 TECHNICAL DATA REPORT

[. . . ] Care should be taken not to strip the Power, Ground, Remote Turn-On lead and Speaker Wires over or near the exposed circuit board. If a stray wire falls on the board and power is applied to the amplifier, failure may occur!The outputs labeled Chan 1 and 2 are a direct connection to the amplifier. The terminals labeled Passive Chan 1 and 2 only become active when one of Xtant's RM Modules is installed. on the module port towers. [. . . ] The RM Modules offer four levels of attenuation: -4, -8, -12, or -16 dB. The appropriate RM Module is dependent upon speaker efficiency and the distance of the listener to the speakers. In a pick-up truck, where the rear speakers are in relatively close proximity, the higher value RM 12 or RM 16 may be appropriate. The modules are easily interchanged and a little experimentation will help you determine the best value. It has been provided to allow easy "turn-off" and "turn-on" of the amplifier during the fine-tuning process. With the amp playing, simply move the Remote Turn-On jumper to Amp-Off position, make your adjustments and move the jumper to the Enable position to turn the amp back on ADDING ACCESSORY MODULES OUTPUT GAIN The output gain for each channel is controlled by board-mounted potentiometers. Xtant suggests setting this level in conjunction with any equalization or signal processing equipment in the system. If your customer desires max output, don't be afraid to adjust the Input Gain Select to +20 and turn the output gain pot wide open (full clockwise rotation). If you should encounter distortion (input clip), turn the amp off via the Remote TurnOn jumper and reset your Input Gain Select to +10. Place the Remote Turn-On jumper to the "enable" position and audition the system. The object is to pass as much input signal as possible without over-loading the input stage. Finally, adjust the output pot for desired "max" volume setting on the head unit's volume control. xtant technologies installer's reference DOCUMENT HAS BEEN CRAFTED TO MAKE INSTALLATION, SYSTEM EXPANSION AND TROUBLE-SHOOTING, A QUICK AND EASY PROCESS. No Sound. Cause Loss of 12V Power at Amplifier Solution Check out-board fusing Check +/­ 12 Volt connections Measure for + 12 Volts or higher @ amp. Check Turn-On lead Check integrity of RCA cables Check connection at amp and head Unit. Voltage @ Turn-On lead needs to be 8 Volt minimum Check Port Jumpers, two jumpers per port are required. Check jumper alignment, jumper must be seated properly. Red LED on. No Sound. Loose Speaker Wires Lack of Turn-On Voltage Missing Accessory Port Jumper RESISTOR MODULES +20 +10 0 ­10 ­20 dB dB dB dB 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. Failure to "enable" the Balanced Line may result in damage to the head unit. [. . . ] CAUTION: 8 Stripping wires over the circuit board may cause product failure. amplifier gain controls: TURN CLOCKWISE TO INCREASE GAIN 5 1 balanced inputs Make all initial adjustments at your work bench. To select "Balanced Input" for OEM integration or inductive noise cancellation, move the two jumpers, located above and to the left of the RCA input connectors to the "enable" position. 3 Amplifier Accessory Ports The input gain is factory preset at +10dB and will work with an input signal of 300mV to 1 Volt. To decrease input gain, place jumper in the 0, -10, or -20dB position. 2 input gain 7 fan speed 3 install accessory modules At your bench, adjust crossover mode jumpers and change crossover frequency SIP's . Remove port jumpers and install module(s) ­ observe "key" on connector for proper fit. [. . . ]