Help voltage issus ASAP!!!!

[Alejandro14]

yesterday i added a capacitor i never checked my system for the voltage ... so the cap charged at 13.4 and i started playing some lil wayne and it went big time to 11.2 or 11.4 i was like hell nahh so i need to know if i need a bew battery ' i bought my f150 2007 used like 6 years ago and never had a problem before installing the system with the battery its a black duralast '... have big 3 done also.

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[garychoffmann 10+ year member]

What are you running, power wire size? Ground?

 

[Alejandro14]

i am running 2 amps ... 1 is a memphis pr1.1000 rms at 1 ohm for subs ... 1 memphis pr750 i think for my door speakers ' in total both amps maybe 1500 rms ... i have 2 American Bass xfl1044s running 1 ohm ... both amps accept 4 gauge wire i installed for both 4 gauge ofc nemesis brand .... speaker wire is 14 gauge and also did a big 3

 

[Papermaker85 5,000+ posts]

Remove the cap. See if that helps

It may not be enough storage to work..

 

[Alejandro14]

the cap is a red stinger 5 farads ' and its new ... i added the cap because i was having dimm lights and also another problem my hu is a soundstream but sometimes it heats up and sends ugly signal to my speakers and subs stop working i have to wait like 20 min for it to gets kinda warm for it to start playing again

 

[Papermaker85 5,000+ posts]

The cap won't help the dimming. It's giving the amp more power and putting more strain on your alternator.

 

[Alejandro14]

so what would you recommend... ?!?! should i get a better battery for the front?

 

[Papermaker85 5,000+ posts]

I'd get a larger alternator.

Do a search for high amperage alternators..

 

[michaellane 5,000+ posts]

so what would you recommend... ?!?! should i get a better battery for the front?

That system shouod be fine on your truck factory. Get a new decent battery.

 

[Alejandro14]

and i think its the battery too ' because i cant even let my system on with the tuck off ' for nomore then 5 minuets because it gets discharge '!!!

 

[Popwarhomie 5,000+ posts]

Throw a good group 34 AGM battery under the hood and call it a day. I would also make sure your grounds are good.

 

[Alejandro14]

what about a yellow top optima ?!? i can get it for 160 with a friend for new at oreillys ' and 1 more thing howcome when i turn on my truck around 2 pm and here were i live its like 110 farenheit and my hu wont send signal to my amps ' meaning ' i turn all the volume all the way to 50 and you can barely hear it like if it was in 5 :/ thats my other problem .

 

[Popwarhomie 5,000+ posts]

Stay away from Optima. They have really gone down hill. I recommend a juicebox battery.

Soundstream is the issue with the headunit. They aren't really known for quality.

 

[audiolife 5,000+ posts]

Your truck takes a group 65 I would stay with a group 65 as they are stronger than a group 34

 

[Papermaker85 5,000+ posts]

Could be the battery is has a bad cell. Find out tge output of your alt. If The current draw exceeds your alts output to keep voltage up you would need a larger alt.