User manual XTANT X2.1204 DATASHEET

[. . . ] 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 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 THIS DOCUMENT HAS BEEN CRAFTED TO MAKE INSTALLATION, SYSTEM EXPANSION AND TROUBLE-SHOOTING, A QUICK AND EASY PROCESS. THE INFORMATION PROVIDED, SHOULD BE REVIEWED PRIOR TO INSTALLING AND/OR ADJUSTING THE 302a. CONNECTING THE HEAD UNIT The 302a is a full-range, 300 Watt stereo amplifier. It is equipped with a pair of RCA input jacks to simplify connection to a standard two or four channel head unit. 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. The Balanced Line circuitry also helps eliminate noise (ie alternator whine) induced into the signal cables. If you are experiencing a noise problem, simply "engage" the Balanced Line circuitry. If the problem continues, call Xtant Technologies' Customer Service at 602·970·9900 for assistance. · · · · · · · · · Red LED on. [. . . ] THE AMOUNT OF SERIES RESISTANCE, ADDED BY THE MODULE, WILL DECREASE THE LEVEL OF THE SPEAKERS (CONNECTED TO THE "PASSIVE TERMINALS") BY -4, -8, -12 OR -16 dB. THE "PASSIVE TERMINALS" ARE CONNECTED, IN PARALLEL, VIA THE RM MODULE TO THE MAIN SPEAKER TERMINALS. INPUT GAIN: 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 -20 dB POSITION. 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. [. . . ]