I'm kinda new. My Eclipse EA3422 amp has 3 modes, 4ch, 3ch and 2ch. What do I use? I will be using a stock head unit in my 03' silverado and alpine speakers.
Also on the amp it has a switch for both channels. HP, LP and THROUGH What does that mean?
It also has a 'HIGH LEVEL INPUT' what is that for? Do I need to use it?
Too simple of questions for most folks around here I guess. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif
Your amp is a 4 channel, which means it is meant to power four speakers (front/rear left and right). That is 4 channel mode.
It can also be used to power three speakers (usually front speakers and a small subwoofer) or two speakers (just the fronts, and will produce over twice the power since the amplifier is bridging channels.)
If powering four speakers (4 channel mode), it will produce around 50 watts per speaker.
If powering two speakers and a sub (3 channel mode) it will produce 50 watts for the front speakers and around 140 watts for a subwoofer.
If powering two speakers (2 channel mode) it will produce 140 watts for each speaker.
HP = high pass = use this setting when using smaller speakers, it keeps the lower bass out of your speakers.
LP = low pass = used if you are running a subwoofer, and keeps the higher frequencies out of your subwoofer.
Through means it will pass a full range signal without cutting out any high or low frequencies. (Used if you have crossovers on your head unit, or external crossover, or if you just want to pass a full range signal.)
The high level input is for when you are using it with a factory stereo, or a head unit without RCA outputs. The speaker wires from your stereo connect to the amplifier to give it a signal. This keeps you from having to use a line output converter (LOC) to convert your factory radio speaker wires to RCAs to plug into the amplifier.
