enough power for my 3000.1 massive audio

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sweetnessa

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Joined: December 13, 2006

Location: United States

Posted: February 17, 2007 at 8:36 PM / IP Logged

i need to know how much battery power i need for a massive audio dual mono block 3000.1 which is 3000 rms at 2 ohm bridged or 1500 rms at one ohm per channel . massiveaudio.com .i have a 150amp ho and i have 2 1000 cranking amp everstartmaxx batteries one up front one in back with the big 3 upgrade its all in a nissan altima 1997 .im planing to power one critical mass ul 12 sub, are they any good would it be better and louder than two 12 inch kicker l7 ?

DYohn

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Joined: April 22, 2003

Location: Arizona, United States

Posted: February 18, 2007 at 9:47 AM / IP Logged

Are you looking for batteries to power the amp with the engine off? Batteries have ampere-hour ratings specified something like 100 amp-hours @ 5 amps (as an example.) This means it can sustain a 5-amp continuous draw for 20 hours (5 amps times 20 hours = 100 amp-hours.) The cranking amps means nothing in terms of how long it will sustain a charge, it only indicates what the short-term surge capacity is before the plates start melting. Use the ampere-hour ratings to determine how many batteries you'll need to sustain the amp's current draw for the time period you wish to operate on battery power alone. Placing batteries in parallel keeps the voltage the same but their current capacity adds together.

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sweetnessa

Member - Posts: 10

Joined: December 13, 2006

Location: United States

Posted: February 18, 2007 at 11:41 AM / IP Logged

i just want it not to keep the car off i want to sustain the current to have power but i do not know the ah rating on my batteries they are everstartmaxx batteries maxx-1n i have two of them

DYohn

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Joined: April 22, 2003

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Posted: February 18, 2007 at 11:55 AM / IP Logged

everstartmaxx... never heard of them so I looked them up. Apparently some kind of Walmart-only brand? Not a lot of good things being said about them on the web.

In any case, while the engine is running your power comes from your alternator not from the batteries.

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soultinter

Copper - Posts: 170

Joined: January 16, 2004

Location: United States

Posted: February 18, 2007 at 2:19 PM / IP Logged

are those even deep cycle batteries?

sweetnessa

Member - Posts: 10

Joined: December 13, 2006

Location: United States

Posted: February 18, 2007 at 3:45 PM / IP Logged

well no there not deepcycle but im not planing to have music playing with the car off with the car on only.Well alot of people say that they dont help that is the alternator but thats not nessaserally true they help for a couple of minutes until they are drained the its only the alternator left alone

DYohn

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Posted: February 18, 2007 at 4:12 PM / IP Logged

sweetnessa wrote:

This is completely incorrect and indeed it's the other way around. Your vehicle (and your stereo) will pull power from your batteries if and only if the alternator is overloaded or not functioning. The battery's job is to 1) start the car, 2) provide instantaneous surge capacity, 3) support loads for a short period of time if the alternator cannot keep up or if the engine is off.

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sweetnessa

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Joined: December 13, 2006

Location: United States

Posted: February 18, 2007 at 10:58 PM / IP Logged

well i deffinetly belive you on that so can you give me a recomendation i have a 150 ho alternator will this keep up with the demands of this amp or do u have any suggestions i think that thats the biggest they make for my car dyohn

DYohn

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Posted: February 18, 2007 at 11:38 PM / IP Logged

Your amp is rated at 1800 watts @ 1% THD and requires a 200 amp external fuse. I suggest your 150 amp alternator may be sufficient as long as you don't run full-out all the time, but you'd be better off with an alt closer to 240 amps.

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sweetnessa

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Joined: December 13, 2006

Location: United States

Posted: February 19, 2007 at 1:31 AM / IP Logged

well i will be droping it to 2 ohms soon and that will be 3000 rms 1800rms was at 4 ohms so when i start running the 3000rms i need a bigger alternator so can you give me a good site that would make one for a nissan altima 1997 and how many amps should this alternator be thank you dyohn

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enough power for my 3000.1 massive audio

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