best battery for under the hood?

**Hippo Machine** · 10-11-2011

I'm sure you both have great set ups (you probably have better subs

)

**Fatboy501** · 10-11-2011

Ah, different worlds man... "better" is subjective... he's SQ oriented, as I'm a groundpounder who likes to shake vision and bother the backs of people's throats and their eardrums.... I understand where the disagreement was.

**Hippo Machine** · 10-11-2011

I was gonna say that but didnt want to offend you if you were focused on sq haha

**banks8604** · 10-11-2011

yeah there's always disagreements between SQ guys and SPL guys lol

**Fatboy501** · 10-11-2011

Lol nah bro, I realize my knowledge wasn't sufficient to provide info equal to all of 1800's links... hell, I had to go above my head to get valid points lol. In any case, I welcomed the debate, and it was all good... until I was belittled... that was bull****. Plain and simple.

**Hippo Machine** · 10-11-2011

Originally Posted by banks8604

yeah there's always disagreements between SQ guys and SPL guys lol

You get in some cars and its like, ooh nice. and others are like, i think my brain just melted!

**AllenH427** · 10-11-2011

Originally Posted by Hippo Machine

I800COLLECT is the Mod that knows a sh*t ton about car audio. This argument should never even have started! The OP got his info in the first few posts! Come on guys

Him being a mod doesn't mean anything, and clearly he doesn't know anything about car audio when it comes to dealing with SPL and high powered systems. The OP got the wrong info in the first few posts, especially when someone recommended him a Red Top... That being a good starting battery but terrible for car audio.

**matt5112** · 10-11-2011

Wanna get off topic?

Hows your hearing doing?

Still able to hear 18 kHz?

**AllenH427** · 10-11-2011

Originally Posted by matt5112

Wanna get off topic?

Hows your hearing doing?

Still able to hear 18 kHz?

Me? Around 19kHz, I checked a few weeks ago.

**rynoman03** · 10-11-2011

Originally Posted by bluegtp91

If your going to buy an Optima, get a Yellow Top.

Redtops suck...and have been proven to fail...time and time again. Everyone around here has since replaced theirs with a factory ACD battery or a Yellow top...

Been runnin my Red Top for 5 years schmee!

**AllenH427** · 10-11-2011

Ahh, to everyone wondering if batteries matter or not, the owner of Maxxsonics, who makes Crunch, Hifonics, MBQuart, and Autotek, made a video to answer the debate!

Car Audio 101 - Battery Tutorial - YouTube

Now 1800, you have a solid track record of owning audio companies, building and designing amplifiers, and >600w experience, can you please tell everyone why this guy is wrong?

**Pure2sin** · 10-11-2011

Only reason I want a new battery is because I want dual terminals. lol

**matt5112** · 10-11-2011

Originally Posted by AllenH427

Me? Around 19kHz, I checked a few weeks ago.

So you rock ear plugs while listening to this system?

Which also means you cannot hear police/amublance or firetruck sirens?

Originally Posted by AllenH427

Ahh, to everyone wondering if batteries matter or not, the owner of Maxxsonics, who makes Crunch, Hifonics, MBQuart, and Autotek, made a video to answer the debate!

Car Audio 101 - Battery Tutorial - YouTube

Now 1800, you have a solid track record of owning audio companies, building and designing amplifiers, and >600w experience, can you please tell everyone why this guy is wrong?

"i like to use 13 V because this is where a deep cycle generally rests"

They generally rest at 12.5 V.

Originally Posted by AllenH427

Fatboy came to a car audio forum full of the worlds top competitors. I would like to post my real world application between numerous batteries and alternator.

I compete for DbDrag and due to my 3 batteries, I have the option to jump between 3 classes. Keep in mind, every tenth of a voltage counts when doing my runs. Street runs are car off, and Super Street runs are car on.
Street B- 1 battery, drop to 12.4V, ~142.7db
Street C- 2 batteries, drop to 12.6V ~143.3db
SuperStreet NW- 3 batteries, 220A alt since car is on now, drop to 13.0V ~144.0db.
So there you have it, with the car being on, my 220A alt didn't make that much of a difference, you need a battery bank to back up the voltage.

The alt was off for the first two tests so your comparison is invalid.

You also didn't reduce the number of batters in super street.

What speed did you run the motor at?

Most alts don't produce full output anywhere near idle.

Do you have an output chart for the alternator you were using?

**AllenH427** · 10-11-2011

Originally Posted by matt5112

So you rock ear plugs while listening to this system?

Which also means you cannot hear police/amublance or firetruck sirens?

"i like to use 13 V because this is where a deep cycle generally rests"

They generally rest at 12.5 V.

Mine under the hood rests at 12.94V, my two in the rear rest at 12.82V. Shoot, XS Power's D3100 rests around 13.1-13.2V.

And why are you hating on me for having a loud system?

**matt5112** · 10-11-2011

Originally Posted by AllenH427

Mine under the hood rests at 12.94V, my two in the rear rest at 12.82V. Shoot, XS Power's D3100 rests around 13.1-13.2V.

And why are you hating on me for having a loud system?

These voltages are after the battery has been sitting with no load or charge for a number of hours?

There are downsides to having an excessively loud system. Safety appears to be one.

**AllenH427** · 10-11-2011

Originally Posted by matt5112

The alt was off for the first two tests so your comparison is invalid.

You also didn't reduce the number of batters in super street.

What speed did you run the motor at?

Most alts don't produce full output anywhere near idle.

Do you have an output chart for the alternator you were using?

My comparison is valid, with alt on and an extra battery, I only gained .4V. From just 1 battery no alt to 2 batteries no alt, I gained .2V. So say I added the 3rd battery and only gained .2V, that means the alt gained me .2V... just as much as the batteries did.
2000 RPMs on the dot in SuperStreet NW. The alternator produces max amperage around the 1700 RPM range.

**AllenH427** · 10-11-2011

Originally Posted by matt5112

These voltages are after the battery has been sitting with no load or charge for a number of hours?

There are downsides to having an excessively loud system. Safety appears to be one.

Yes, no load or charge for numerous hours. The 2 in the rear sat on the floor in my room for 6 months and were at 12.82V.

Okay, so you're one of those guys I give a demo to and don't like my system cause it's "too loud."

**matt5112** · 10-11-2011

Originally Posted by AllenH427

So say I added the 3rd battery and only gained .2V, that means the alt gained me .2V... just as much as the batteries did.

Thats an assumption.

Originally Posted by AllenH427

Okay, so you're one of those guys I give a demo to and don't like my system cause it's "too loud."

Really?

Well thanks for stepping in for your CAC buddies.

**AllenH427** · 10-11-2011

Originally Posted by matt5112

Thats an assumption.

Thats an assumption? Okay, so 1 batt gained me .2V, then 1 more batt and a 220A alt gained me .4V.
Argue with Maxxsonics more too, you are keeping me entertained. Do you have any world experience like I do with this subject? I'm trying to educate the OP, not make guesses and hope I'm right.

**matt5112** · 10-11-2011

Originally Posted by AllenH427

Thats an assumption? Okay, so 1 batt gained me .2V, then 1 more batt and a 220A alt gained me .4V.

What did just the alternator net you?

What did just the battery net you?

Without testing separately, you cannot be 100% which resulted in the gain you saw.

Originally Posted by AllenH427

Do you have any world experience like I do with this subject?

Nope. I've never dabbled in audio before.