Are 18's worth the space?

[dbjunior 10+ year member]

Second sa15 and a new amp that will handle .5ohm and feed them more power like a twisted sound 1.8k or look for a solid used amp.

 

[adulbrich 5,000+ posts]

What's electrical like? Do you have a volt meter to monitor drop?

 

[Shorty Jenkans]

i got xs d3400 up front, 0 gauge big 3, stock alt (probably 100 or so amps), 1 run of 0 to the back to my xs xp750. 2 volt meters to measure both batteries, idling around 13.6 and running 14.2. with the new d3400 and my old amp nvxjad1200.1, full tilt (gains set to 1200watts not max before clipping) i didn't drop below 13.6. I will definitely get a bigger amp once i upgrade the alt, but i just don't have $600 to spare right now

 

[adulbrich 5,000+ posts]

13.6v is about where I drop to also. That's not dangerous by any means.

Might want to save up for an alt if you increase amp power though. With a 270 amp alt, you could up power quite a bit since you already have dual batteries.