Pyle PLMRC500X1 Instruction Manual - Page 7

OPERATION After the ampli er has been installed and all connections have been made carefully and securely, turn the radio ON so that the ampli er is switched on automatically. After a short power-on period, the ampli er reaches its full performance. Now turn up the volume slowly using the volume control of the radio. If there is no sound or only a distorted replay, switch o the radio immediately - the ampli er will also switch o automatically - and check if all connections have been made correctly. GAIN = INPUT LEVEL CONTROL The input level control allows the system to work well within a wide range of output level. Choose the adjustment in the way that you achieve a sound most possibly without any distortion. As a guideline the following procedure is recommended: • If you use several ampli ers, the adjustment has to be made for each set separately. Tune in the volume of your car radio to2/3 of the maximum volume. Now turn the gain control of the ampli er from "Min" to "Max" direction until you can hear distortions. Then turn the level control a little back to "Min". The gain control adjustment is nished now. PHASE SHIFT Allows you to change the phase of your subwoofer from 0 to 180 degrees to help compensate for timing di erences between drivers. LOW PASS FILTER The lower frequency under setting point can be pass. SUBSONIC FILTER The higher frequency above setting point can be pass. www.PyleUSA.com 7