User manual XTANT A1544A TECHNICAL DATA REPORT

[. . . ] IN T H E F U T U R E, A N Y SYSTEM E X P A N S I O N A N D / O R PROBLEMS M A Y B E REFERENCED T O T H I S LOG. A1544A ADJUSTMENTS ( DRAW POSITION O F CONTROL & front "a" front "b" front "c" INSTALLATION CIRCLE FREQ. RANGE SELECTED) SEQUENCE rear "a" rear "b" REMOVE A1544A COVER: Loosen allen head screws and lift-off cover. Do not remove p r o t e c t i v e c o v e r i n g o n s t a i n l e s s s t e e l l i d u n t i l i n s t a l l at ion i s com pl et e. TEMPORARILY MOUNT A1544A: FREQ. FREQ. FREQ. FREQ. FREQ. The A1544A is designed to be anchored through the four (4) holes located on the circuit board/base assembly. MARK WIRES FOR TERMINATION AND REMOVE A1544A: A1544A TUNING SEQUENCE The A1544A i s desi gned t o be "set - up" or "t uned" w i t h t he ai d of a R e a l T i m e S p e c t r u m A n a l y z e r m e a s u r i n g a p i n k n o i s e s i gnal generated by the mobile audio system. The analyzer provides visual feedback when following the steps listed below. [. . . ] RTA the system and determine points of adjustment. Turn the system off and place each of the frequency range jumpers into their corresponding "frequency range" positions. P e r f o r m t h e f o l l o w i n g s t e p s p e r b a n d: With the system playing pink noise, turn on the RTA and adjust pink noise SPL to 85 ­ 90 dB. Turn the boost/cut control to +18 dB (full clockwise rotation). This will show the present center frequency and "Q" settings on the analyzer. Rotate frequency control to the frequency you wish to adjust. Adjust "Q" setting to match the width of the dip or peak you are addressing. Finally, adjust the gain control to achieve the desired response curve. xtant technologies · · · · · · · · · · · · · · · · · · Q ADJUST Q ADJUST Q ADJUST Q ADJUST Q ADJUST Determine wire lengths for Power, Ground & Remote and mark for cutting/termination. TO ADJUST INPUT GAIN, PLACE THE JUMPER IN THE POSITION WHICH ALLOWS MAXIMUM GAIN BEFORE CLIPPING (DISTORTING). IN THE 2 CHANNEL MODE, ONLY THE FRONT INPUTS (MAY) REQUIRE ADJUSTMENT. PLEASE REFER TO THE CHART BELOW WHEN SETTING INPUT SENSITIVITY. THESE SETTINGS ARE DESIGNED TO BE A STARTING POINT OR REFERENCE. IF MORE INPUT GAIN IS DESIRED, MOVE THE JUMPER TO A HIGHER "+" SETTING. TO ACHIEVE LOWER GAIN, MOVE THE JUMPER TO ONE OF THE "­" POSITIONS. THE A1544A IS SHIPPED WITH THE F/R INPUT SENSITIVITY SET AT +10 dB. 2CH / 4CH INPUT MODE JUMPER: THE POSI- Front "A" FREQ FREQ Front "B" FREQ Front "C" FREQ Rear "A" FREQ Rear "B" SETTING THE E TION OF THE POTENTIO ROTATION DECREASES THE USE OF AN RTA, P ENCE ­ KEEP IN MIND ATED VALUES PICTU STRONGLY SUGGESTS Center FREQUENC "Q" "Q" "Q" "Q" "Q" 2 3 FREQUENCY VALUE IS A 1000 DEPENDING UPON = X 10, FREQ JUMPER 2 "Q" 1 FULL BOOST/CUT BOOST/CUT BOOST/CUT BOOST/CUT BOOST/CUT 1. 1 1. 6 COUNTER CLOCKWIS ROTATION PRODUCES A "Q +20 dB +10 dB 0 dB ­10 dB ­20 dB = = = = = 100 ­ 300 mV 300mV ­ 1V 1V ­ 3V 3V ­ 8V 10V ­ 17V BALANCED LINE: XTANT'S BALANCED LINE TECHNOLOGY MAY BE USED TO ELIMINATE INDUCED AND/OR GROUND-LOOP RELATED NOISE, RECEIVE SIGNAL FROM A BALANCED SOURCE, INTERFACE WITH A HIGH LEVEL SIGNAL (SPEAKER OUTPUTS) AND/OR BE USED AS AN OEM SOURCE UNIT INTERFACE. EACH SET OF INPUTS (FRONT/REAR) OF THE A1544A FEATURE BALANCED LINE CIRCUITRY. TO ACTIVATE THIS CIRCUITRY, SIMPLY MOVE THE BALANCED LINE JUMPER TO THE "ENGAGE" POSITION. [. . . ] TO ACTIVATE THIS CIRCUITRY, SIMPLY MOVE THE BALANCED LINE JUMPER TO THE "ENGAGE" POSITION. TO USE BALANCED LINE IN THE 2 CHANNEL MODE, ONLY "ENGAGE" THE FRONT INPUTS. THE OUTPUTS OF THE A1544A ARE NOT BALANCED. GENERALLY, THE BENEFITS DERIVED FROM BALANCED INPUTS ARE AVAILABLE AT THE OUTPUTS. [. . . ]