2 amps on stock atl?

[sqcomp]

The gain adjustment on the amplifier raise the sensitivity of the amplifier to the incoming signal Voltage. If one has the amp's gains cranked like that, I'd be more than willing to wager that on the top end of your volume that it can get pretty noisy.

"In my opinion (and MANY will disagree), the gains should be set so that the amplifier reaches full power just as the head unit reaches maximum output. This would allow you to use the entire range of the volume control (assuming that the head unit doesn't clip at full volume) and still get full power out of the amplifier. If you're an audiophile who likes listening to a flat response AND you have a speaker system that produces a flat response AND are listening to music that's properly recorded AND you've purchased the right amplifier, setting the gains like this will prevent clipping (again, assuming that the head unit doesn't clip at full volume). If you're into quality over quantity, this is (IMO) the best setup." -BCAE1.com


Aside from that side issue, the amplifiers load on your alternator is minimal DEPENDING on how hard you're railing on the volume. Our OEM alternators aren't particularly beefy. They are decent quality though. If loading your alternator down makes you nervous, consider my situation. I'm running three Audison LRx amplifiers off my alternator. I still have a good 14.3 Volts on startup and hover at 13.8 to 14 Volts driving to and from work. There are times when I have dipped the running Voltage down to 12.9. That was at idle and pulling a 2 Ohm mono load on my LRx 2.9 sub amplifier...something I normally don't do. In that situation I was testing out a pre loaded digital designs enclosure.



Here's something to read:

"If you have an alternator that can produce 120 amps of current (max) and the the total current demand from the electrical accessories (including the battery) is only 20 amps, the alternator will only produce the necessary current (20 amps) to maintain the target voltage (which is determined by the alternator's internal voltage regulator). Remember that the alternator monitors the electrical system's voltage. If the voltage starts to fall below the target voltage (approximately 13.8 volts depending on the alternator's design), the alternator produces more current to keep the voltage up. When the demand for current is low, the full current capacity of the alternator is not used/produced (a 120 amp alternator does not continuously produce 120 amps unless there is a sufficient current draw)." - BCAE1.com


The short answer to your question is...you'll be fine for the most part I'm sure.