User manual XTANT X104 TECHNICAL DATA REPORT

[. . . ] For added safety, an outboard 60 Amp service fuse may also be added close to the amplifier. Xtant recommends that all wires be terminated with "spade" or "ring " style connectors. 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 modules are easily interchanged and a little experimentation will help you determine the best value. This jumper breaks the connection of the Remote Turn-On lead. 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. These pots independently adjust the output level of each channel. Xtant suggests setting this level in conjunction with any equalization or signal processing equipment in the system. Output gain is adjusted independently from the Input Gain Select. 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. Repeat this process if distortion (input clip) continues. 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: INPUT VOLTAGE MULTIPLYING FACTOR INPUT JUMPER POSITION MULTIPLYING FACTOR CONNECTING THE WIRES TROUBLE SHOOTING Symptom/Condition Red LED not on. 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. Check integrity of speaker connection at amp and speakers. 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. No Input Signal 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. [. . . ] 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 increase the gain, move the jumper to the +20dB position. 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. [. . . ]