I have a Soundstream RUB 1600 watt amp wire at 1 ohm. When I set my gains I used the typical 50hz, sub wires disconnected, etc... I set the voltage to 40 volts on the nuts. Hooked everything back up and let er rip. Sounds fine. Well I finally got around to mounting the amp and cleaning up the wires. Before I did that though I double checked my gains. Voltage was at 47 volts? What would cause it to rise like that? I used the same tone as before. So I have been checking it off and on for the last couple days and sure enough, volts keep rising up even the the gain knob hasn't been touched.

Any idea on why it would do this?

I've checked everything from the battery back and everything is secure and tight. Could the amp be fubar for some reason? Its brand new and only been running for around week now? It has also made what sounds like thunder today. It did it when I was leaving the golf course. I had it on volume 10 and the bass sound like low rumbling? Song was Black Eye Pea's Boom Boom Pow, at the very start of the song when the actual bass line and vocals start. ( as opposed to the intro that has a few rumbling spots ) The song sounded super clean when I got to the course.

And off but on topic: My amp has a switch for .2v-2v and 2v-8v. When in the .2-2v setting the gain knob barely gets turned to hit 40 volts, but in the 2-8 setting I have to turn it up a little passed 3/4's to hit 40 volts. Is one setting better then the other? Or does it not matter as long as its hitting 40 volts. I couldn't hear a difference between the 2. I have 2 volt preouts.

Pic of the switch:

Edited July 10, 201015 yr by Teampapi79

It sounds like you might have a head unit issue if it's doing that for the first time and all setting on it are the same.

It sounds like you might have a head unit issue if it's doing that for the first time and all setting on it are the same.

That's kinda what I was leaning towards after thinking about it after I posted. My current unit is just a POS Jensen Screen. I only bought it because scrolling through my iPod is cumbersome an album or artist at a time. 5700+ songs, 586 Artist, etc..... It does act buggy once in a while by freezing up or I hit the back button to restart a song and it pauses the song or does nothing at all. Worst 300 I ever spent in my life! I'll swap heads out with another pioneer I have here and see if that clears it up.

I didn't notice on my old temp setup as the amp didn't have a gain knob. You would just select 0db, -6db. -12db, etc and that's how you set the power. Hope this fixes the problem.

Thanks for the reply!