Lights dimming with subs!

[blueflamed03]

And yeah its the SWR-1243D model, so it's two 4ohm voice coils wired parallel to get a 2 ohm overall load

two DVC 4's will end up with a final 1 ohm load...two DVC 2's is a 2 ohm load...

 

[nytahoe]

two DVC 4's will end up with a final 1 ohm load...two DVC 2's is a 2 ohm load...

think he said 1 12 so it 2 ohm

i took a fast vid with my bb not great but i dont really dim. i have to take a better one.

 

[blueflamed03]

cool, read one sub,then saw this

Also with the engien off and the subs, HU and fan still on it take like 5 minutes of play before the battery get to a discomfort level (roughly 11.5V).

but your right then, one DVC 4 = 2 ohm

sorry for the confusion

 

[shundal]

when i changed from one 10 inch to 2 12's recently, i wired my subs to run my amp at 2 ohm, as opposed to 4ohm from my old setup. I noticed that i was getting a slight dim on my lights, and i have full leds all around like you. After messing with the gain on my amp i was able to eliminate the slight dimming that i did have. Overall, my system is running about 900 watts rms, and 420 rms to my sub.

 

[Modded]

when i changed from one 10 inch to 2 12's recently, i wired my subs to run my amp at 2 ohm, as opposed to 4ohm from my old setup. I noticed that i was getting a slight dim on my lights, and i have full leds all around like you. After messing with the gain on my amp i was able to eliminate the slight dimming that i did have. Overall, my system is running about 900 watts rms, and 420 rms to my sub.

Thanks NY for the video, mine dims a bit more than that.
Andyeah Blue you have it right now.
Shundal my gains are all the way down as called for by an Alpine and a 4V source for the sub input. So basically if oe has a 4V source their gains should be all the way down like mine.

 

[stevek]

Yeah it's under the back seat but Alpine recommended an 8 gauge so I went with it, maybe I should have went with a 4. Also the 8 gauge wire barely fit in the 12V terminal, so I know a 4 gauge def. won't. If I find out that's the issue I will just scoop a 4 gauge wiring kit.

And yeah its the SWR-1243D model, so it's two 4ohm voice coils wired parallel to get a 2 ohm overall load.

---------- Post added at 03:16 PM ---------- Previous post was at 03:14 PM ----------



I don't have a volt meter but according to the dash meter with the subs and all accessoires on the voltage is 15V, and it does not dip at all when the bass hits.
Also with the engien off and the subs, HU and fan still on it take like 5 minutes of play before the battery get to a discomfort level (roughly 11.5V).

They recommend an 8 gauge if it's less than 1m from the battery. You may be better off setting up a distribution block next to the battery and then running the 4 gauge from there.

 

[Modded]

They recommend an 8 gauge if it's less than 1m from the battery. You may be better off setting up a distribution block next to the battery and then running the 4 gauge from there.

Are you serious??
That is stupid if Alpine really thinks that an amp can possibly be 1 meter from the power source. That would mean its somewhere under the hood or on the firewall.
Problem is I don't think I can properly use a 4 gauge wire because the terminal for the battery source on the amp barely accomadated the 8 gauge I used.
Maybe I ill get some 0 gauge wire and run it to a d-block near the firewall bushing, then run the 8 gauge from there?
Or myabe I need to scoop some 4 or 0 gauge wire and do the big 3 mod, think that will help?

 

[nytahoe]

I have 0 in my truck and I split it down to 4 right b4 the amp but I'm also drawing a 100 amps

 

[stevek]

Are you serious??
That is stupid if Alpine really thinks that an amp can possibly be 1 meter from the power source. That would mean its somewhere under the hood or on the firewall.
Problem is I don't think I can properly use a 4 gauge wire because the terminal for the battery source on the amp barely accomadated the 8 gauge I used.
Maybe I ill get some 0 gauge wire and run it to a d-block near the firewall bushing, then run the 8 gauge from there?
Or myabe I need to scoop some 4 or 0 gauge wire and do the big 3 mod, think that will help?

Where did you connect the HID relays?

 

[Modded]

The HID relay is connected directly to the +ve terminal on the battery?