SDX SERIES AMPLIFIER OWNER’S MANUAL version 07/21 v2
LEVEL/GAIN: NOT A VOLUME KNOB, THE INTERNET IS LYING TO YOU
😊, used to set the input signal levels, start from Min and slowly turn clockwise
until you hear angels singing or the sirens from the cops looking for you. Scan this
QR Code for a video on setting your gains
FILTER: Turns the internal crossover on or off, you typically would not turn it off
unless you have an external processor or crossover. Turning these off without
external protection could damage your speakers
RANGE: Multiplier for the crossover point for the LPF and HPF knobs, x1 will indicate the top frequency
range, x20 will indicate the bottom range.
LPF: Low pass filter – Filters out high frequencies
HPF: High pass filter - Filters out low frequencies
SUBSONIC: Filters out low frequencies on the lower spectrum, this is used to protect subwoofers from
playing frequencies lower than they were designed to handle.
PHASE- Turn to adjust the phase. Can be used on 180 when inverting woofers.