Headlight dimming with only a 600RMS watt amp?

[J31Rob 5,000+ posts]

i dont understand mine. i dont know what my stock size is and i dont have the big 3 done. i did upgrade the wire from alt to batt tho. i used a stinger 4 ga. i have 3 batts. i get very limited dimming on 2400rms. i had a saz2000d and it never dimmed with no extras batts. i dont understand how mine dims now(its not clipping, i oscoped the amp) but didnt on the sundown. i was thinking it had to be the difference in the efficency?

Dead cells in batteries (even if it's one battery out of many) will cause this. It's like a bottleneck.. if one is damaged it will effect the entire setup.

Yep I posted in this thread that I got my battery checked at Advnaced Auto and it is good, however is stock from 10+ years ago.
I do listen to a lot of mixtape/underground type music but even on professionally recorded music I get dimming while listening to my music normal-high listening volume.

I didn't read the whole thread.. sorry. Advanced only checks to see if the battery is at full charge and is capable of taking a charge. Not if the battery is in good health or how well it holds a charge. Ask a buddy to borrow a battery & just swap them out real quick.. see if that fixes your issue. A 10 year old battery is never going to perform up to par with a heavier load than stock. Especially if you live somewhere where winter is involved.

 

[xmakeafistx 10+ year member]

What exactly he said ^ Its probably your battery. Also what the guy said about the efficiency of amplifiers, i was thinking that could be an issue also.

 

[akheathen Premium Member]

you mean they don't load test the battery, too? a bad cell is easy to pick up with a volt meter- put one probe on a terminal, and hold the other probe over each cell, the voltage should jusmp evenly as you get further away from the side with the probe. if it doesn't, you found a bad cell.

 

[xmakeafistx 10+ year member]

I didn't see the part where he said they don't load test it, thats something pretty crucial. Voltage could turn out completely fine but you can still have a dead cell.

 

[akheathen Premium Member]

blah blah......Advanced only checks to see if the battery is at full charge and is capable of taking a charge. Not if the battery is in good health or how well it holds a charge. Ask a buddy.........blah blah....

richair^^

 

[J31Rob 5,000+ posts]

richair^^

I don't have any idea wtf this means.

 

[Fi_ 10+ year member]

I have this same problem but mines worse I did BIG III with 0 gauge and I'm running a DC 1.2k and a Kicker KX600.4 decent grounds from what I can see and I'm tuned for practically no clipping. I run a brand new stock 90a alternator and just bought a Odyssey PC1500DT and I get massive light dimming and drop inot low 12's.

Also when I did bIG III i replaced the wires that were there with new ones I didnt add to them like most people do I used all new 0 gauge wires. Also I grounded my chassis to my batteries negative, should I have done that to my cars frame? I'm starting to wonder if I did my big III wrong and if its a bad ground somewhere.