How do i set the gain on my amplifier to match my headunit. i have a pioneer headunit and under the subwoofer it shows it goes up to +12db. on my hifonics amp what knob should i turn to do this. would it be a bass EQ knob that goes 0db- 18db or level that goes 9Vto 0.2V
don't boost the sub output. boosts just create distortion.
figure out the pre out voltage for the HU and turn the amp gain to that voltage, if its marked. if not you can use a DMM and this formula: Sqrt (watts RMS X Load) match the AC voltage at the amp output to the result. measure with the speakers unhooked though.
honestly, i say play some music you usually listen to, start with the gains turned all the way down, then turn them up till you either hear distortion or have enough bass presence for your tastes. whichever comes first.
does this give me the answer on how to connect it with the amp correctly? or shold i give my amp info to?
Key Features: detachable face silver and blue cosmetics plays CDs, CD-Rs, and CD-RWs plays MP3 and Windows Media (WMA) files displays CD Text, MP3 and WMA titles MaxTune tuner 12 FM/6 AM presets Bass Engine (bass center frequency, width, and level, plus treble center frequency and level adjustments) MediaXpander optional auxiliary input MOSFET internal amp 4-volt front, rear, and subwoofer preamp outputs 18 watts RMS/50 peak x 4 channels (CEA compliant) CD frequency response 5-20,000 Hz CD signal-to-noise ratio 105 dB FM sensitivity 9.3 dBf
Set the gain on your amp a little higher (actually the number will be lower - but turn it clockwise) than 4 volts, that way it'll be at max volume, before your HU reaches output distortion.