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what i need to change for 5500w

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=122931
Printed Date: January 24, 2022 at 11:57 AM


Topic: what i need to change for 5500w

Posted By: bestrider14
Subject: what i need to change for 5500w
Date Posted: August 01, 2010 at 3:04 PM

hi I new here and in the wolrd of car audio and I hope that you can help me

first I have 2 sub (Q12D2 SPL 12" 3,000 watt dual 2 ohm voice coil sub) = 6000w. I drive it whit a power acoustik amp of 5500w and i would buy a cap but i am not sure if a realy need :S.

so I will upgrate my big3 whit 0g wire but what a need to change more. battrie,alternator???? help me I am lost :P

tank you



Replies:

Posted By: i am an idiot
Date Posted: August 01, 2010 at 4:45 PM

Do not waste money on a capacitor. 

The only way to connect your speakers to that amp is depicted in the following picture.

Option 2 (series/parallel) = 2 ohm load
Voice coils wired in series, speakers wired in parallel
Recommended Amplifier: Stable at 2 or 1 ohm mono
posted_image
 





Posted By: bestrider14
Date Posted: August 01, 2010 at 11:05 PM
yes i know how to connect my speaker on my amp but a would like to know what i need to run it. a better battrie, alternator or 2 battrie??? is this i would like to know. so tank you to try to help me :)




Posted By: oldspark
Date Posted: August 02, 2010 at 12:41 AM
Yes.


It is up to you.

You need an alternator big enough to supply the current/power required (and charge battery & run the vehicle).

For that size, I'd suggest a 2nd battery as close as possible to the amp (hence AGM aka VRLA (sealed) battery if "internal") and retaining your normal battery for cranking etc with an isolator between the batteries (eg - only interconnected when engine charging; it's cheap if you have a dash charge lamp).

There are other options but I won't recommend them (yet).




Posted By: bestrider14
Date Posted: August 02, 2010 at 11:07 AM
ok tank you i tcheck for a 220amp alternator but if a would like just 1 battrie if a take a kenetik i will be enought ?




Posted By: oldspark
Date Posted: August 02, 2010 at 11:57 AM
If the alternator is enough to replace the charge you won't be discharging the battery.

If you discharge the battery (engine off or undersized alternator) as long as the battery handles that load (current) it should be fine provided you don't discharge it below is rated capacity.

If the battery isn't lasting long enough, get a bigger battery.

If the Kinetik is suited to cranking a car and the amp's load, it should be fine, but I'd suggest whatever battery has the best capacity (with required current supply) rather than wasting money on an AGM battery that sits in the engine bay (ie, far from the amp). (In which case you may have voltage dips at the amp - then I'd recommend almost any (small) AGM battery next to the amp. A small AGM usually out-performs (expensive) caps in that regard.)




Posted By: pngelykn
Date Posted: October 14, 2010 at 5:51 PM
What you need is two batteries, a HO alternator, and some good 1/0 wiring. Don't waste money on a useless cap.

-------------
1 Panasonic HU
1 Power Acoustic Amp (sorry)
1 Amazing Box
3 Kicker CVR15s
1 Termlab
36 Hertz
139.5 Decibels
1 Big grin.




Posted By: oldspark
Date Posted: October 14, 2010 at 6:23 PM
Only silly people would use a cap thinking it somehow increases (alternator) power output.

Mind you, there are lots of silly people - or are they simply gullible or trusting?




Posted By: Alpine Guy
Date Posted: October 14, 2010 at 8:47 PM
You NEED a HO alternator that can put out at LEAST 100 amps more at idle than your stock alternator.

-------------
2003 Chevy Avalanche,Eclipse CD7000,Morel Elate 5,Adire Extremis,Alpine PDX-4.150, 15" TC-3000, 2 Alpine PDX-1.1000, 470Amp HO Alt.




Posted By: oldspark
Date Posted: October 14, 2010 at 11:45 PM
Again, based on what?

What about the shortfall with only a 100A increase? (In this case.)




Posted By: Alpine Guy
Date Posted: October 15, 2010 at 5:26 AM
https://www.dcpowerinc.com/articles/supply-and-demand-electrical

DC Engineering recommends at least half the fuse rating of a class D amplifier to be the minimum increase in alternator size. His amp has 200A worth of fusing, so he needs a minimum of a 100 Amps at idle more than before, unless there is also other accessories added as well.

100 Amps more at idle is a ton of extra current, considering most alternators stock are only about 40A at idle.

-------------
2003 Chevy Avalanche,Eclipse CD7000,Morel Elate 5,Adire Extremis,Alpine PDX-4.150, 15" TC-3000, 2 Alpine PDX-1.1000, 470Amp HO Alt.





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