500 RPM Member
Gain is NOT a volume knob. a gain is simply a matching level of your speaker. E.g If you set your gain for your sub higher than your component than your sub wil be louder than your component means your sound is not balance.oldskolboyz said:Not 100% laa.. it's depend on current flow to amp.. let say your amp 500W at 14.4v.. only at this current the amp will pump 500W (max) to you sub.. if the current flow at 13.8v maybe less than that laa.. around 400-450W.. Hope you can check with manual.. every amp manual will show/state the actual power rating like 100w X 2 4ohm 12.v & 150w X 2 4ohm at 13.8v or 14.4v..
Gain control is the Volume Control knob.. I don't know why so many ppl are taught that gains are NOT volume controls.. but that the fact.. Let me try to clarify this a little..
If we hook up a head unit with a 4volt (or more) output to an amplifier, then the volume will get loud very fast when we start to turn it up...In other words if our digital volume control goes from 1-30, then a HIGH VOLT output to an amplifier might make the amplifier reach full power at 5 on the volume scale... That not good cause it would be nice if you had a little more swing in your 1-30 range!
And by the same token a headunit with a LOW VOLT output might have to be turned up all the way to 30 and might still not quite drive the amplifier to full power... That not good either..
A gain control in this case will allow you to adjust the amplifier so it allows the volume of a headunit to control the amplifier so it will get loud at a desirable point in the 1-30 swing... Usually about 3/4 the way up. We don't want it to get loud too fast as we wont have a good control as music levels differ. And we don't want it to have to be turned up all the way to get loud either, because since different music may be recorded at different levels if we set the gains for max output with one music source it might not get loud with a music source recorded at a lesser level.
So, by setting the gains so 3/4 turn of the headunits volume knob gets it LOUD gives you plenty of control and some extra above the 3/4 mark in case you get some music that's recorded at a lesser level...
Amplifier output it not based on what voltage alone but also current supply. If you run in high voltage but low current draw then your amp will give low output.
E.g let say 2 cars are has an amp that run on 14.4v. Car A use 8 gauge power cables and car B runs with 0/1 gauge. Which car amp's has higher current draw and power output??
I suggest you read more before making your own conclusion as it might mislead those new to ICE and want to learn.