gain setting/power question?

[snarl2004 10+ year member]

If you have an amp rated 3000rms at 2ohms and you set the gain to what it should be (~77 volts) and your car voltage stays strong at 14.4 when the sub is playing does that mean you ARE getting the 3000rms out of the amp?

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[helotaxi 5,000+ posts]

Depends on the signal you're playing and volume setting. The power from the amp is dependant on the signal sent to it. If you turn the volume down or send a signal that is a lower level that the signal the gain was set with, the power from the amp will be lower. Amp output is only constant with a constant signal.

 

[snarl2004 10+ year member]

lets say i set the gain on the amp at volume 36 playing a 50hz tone. that would mean if i play the sub at volume 36 playing that 50hz tone and my voltage stayed at 14.4 volts then i would be getting 3000rms from the amp?

 

[helotaxi 5,000+ posts]

Assuming that the same recording level was used on both tones, and the sub was giving you a 2 ohm load, yes. I can pretty much promise you that the sub won't give you exactly a 2 ohm load though.