proper power upgrades but voltage drops
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=114878
Printed Date: May 01, 2024 at 3:53 PM
Topic: proper power upgrades but voltage drops
Posted By: seismicburban
Subject: proper power upgrades but voltage drops
Date Posted: July 05, 2009 at 11:31 PM
I have what is listed in my sig and I am getting large voltage drops. Is there something I am missing? ------------- AVIC F90BT
4 15L7s
4 ZX 1000.1s
BIG 3
295 AMP ALT
2/0
2 KINETIK HC 2000
STILL GETTING VOLT DROPS
wth???????
Replies:
Posted By: mustanglife
Date Posted: July 06, 2009 at 3:21 AM
This off topic but I was thinking about getting a Kinetik 1400 to replace my existing car battery. Instead of buying a cap. How do you like the Kinetik? All I have is a 500 watt rms set up maybe going to a max of 1000 watt rms setup. Would you recommend it. My only problem is lights dimming. On your problem, how much is your voltage dropping ?
Posted By: mustanglife
Date Posted: July 06, 2009 at 3:28 AM
Correct that. I went to the website and read all the info about it. I need to factor in 800-1200 watts my system runs with the factory stuff. So probaly a 1800
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2003 Modded Mustang GT
Posted By: glass22
Date Posted: July 06, 2009 at 7:19 AM
You have a good ground?
Posted By: seismicburban
Date Posted: July 06, 2009 at 6:34 PM
The Kinetiks are good I think ...I have 2 of the HC 2000s and they seem ok
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AVIC F90BT
4 15L7s
4 ZX 1000.1s
BIG 3
295 AMP ALT
2/0
2 KINETIK HC 2000
STILL GETTING VOLT DROPS
wth???????
Posted By: seismicburban
Date Posted: July 06, 2009 at 6:35 PM
I am pretty certain that the ground is extremely solid....it drops all the way down from 15 volts to about 10 volts after a couple songs
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AVIC F90BT
4 15L7s
4 ZX 1000.1s
BIG 3
295 AMP ALT
2/0
2 KINETIK HC 2000
STILL GETTING VOLT DROPS
wth???????
Posted By: aznboi3644
Date Posted: July 06, 2009 at 8:14 PM
simple...you don't have enough alternator...adding batteries will just slow the voltage drop.
Also you can sell those amps and buy more efficient amplifiers...like some Ice Power amplifiers.
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Custom Enclosure Design
Posted By: drew454u
Date Posted: July 06, 2009 at 9:16 PM
yah you need more alternator, those amplifiers probally pull close to 100-150 amps a piece. lets say 100, take the 100x4 and your pullin 400 amps. your alternator probably puts out around 300 at high rpm. your in dual alternator territory.
Posted By: thatfloorguy
Date Posted: July 06, 2009 at 11:09 PM
Dual alt, huh? Gonna probably have to give up the ac unit for another HO. What car/yr is it?
Posted By: thatfloorguy
Date Posted: July 06, 2009 at 11:10 PM
You upgrade the big 3 yet?
Posted By: seismicburban
Date Posted: July 07, 2009 at 11:45 PM
Room is not an issue it is a 454 in suburban, and like my sig states I have done the big 3, so one more 295 amp alt and i should be good?
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AVIC F90BT
4 15L7s
4 ZX 1000.1s
BIG 3
295 AMP ALT
2/0
2 KINETIK HC 2000
STILL GETTING VOLT DROPS
wth???????
Posted By: seismicburban
Date Posted: July 07, 2009 at 11:51 PM
Sorry, I guess I did not put the Big 3 in my sig, thought I did. But yes that was one of the first things I did.
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AVIC F90BT
4 15L7s
4 ZX 1000.1s
BIG 3
295 AMP ALT
2/0
2 KINETIK HC 2000
STILL GETTING VOLT DROPS
wth???????
Posted By: daboss593
Date Posted: July 08, 2009 at 1:23 AM
alt may be the issue but how long before your volt drops? may be your alt dsnt have a big enough heat sink on it? which you will lose alt charging power due to it getting hot etc.
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OWWWWWWWWWWW you said you discharged the cap!
Posted By: DYohn
Date Posted: July 08, 2009 at 8:24 AM
Whats your engine speed when this happens? ------------- Support the12volt.com
Posted By: haemphyst
Date Posted: July 08, 2009 at 10:22 AM
I'm confused by the title of the thread...
If the proper power upgrades were done, then the voltage CAN'T drop... can it?
The PROPER upgrades dont just include underhood wiring, but installation technique as well. Did you crimp and solder all of your connections? Did you clean every chassis ground point and weather-protect it after termination? WHERE did you obtain your chassis grounds? Are you certain you are using adequate gauge wiring throughout the system? Who sourced the alternator? Are THEY reputable? Is the alternator built AS AN HO UNIT, or is it just a re-hashed, off-the-shelf, GM large-case unit? 300A from even a large case GM is still a BUNCH of power. If you don't have at LEAST a 1/2 inch connection stud on the alternator, you don't even have output capacity for 300A.
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It all reminds me of something that Molière once said to Guy de Maupassant at a café in Vienna: "That's nice. You should write it down."
Posted By: aznboi3644
Date Posted: July 08, 2009 at 8:38 PM
thread title should be changed to "unproper power upgrades and voltage drops..wth??"
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Custom Enclosure Design
Posted By: seismicburban
Date Posted: July 08, 2009 at 9:52 PM
Wow a lot of ?s. Here we go, all connections are crimped and soldered. I do not know what you mean by weatherproofing at termination. The grounds are the engine block, fender, and the amps are grounded on a ground down to bare metal rear seat mounting hole. The wire is all 2/0 except for the 1/0 that runs into each amp pos and grnd. The alt was from nations out of missouri. The stud is 1/4 inch. the voltage only drops when I am banging on it real hard for a while and if i am just cruising with the ac on and bumping . thanks for all the info possible ------------- AVIC F90BT
4 15L7s
4 ZX 1000.1s
BIG 3
295 AMP ALT
2/0
2 KINETIK HC 2000
STILL GETTING VOLT DROPS
wth???????
Posted By: i am an idiot
Date Posted: July 08, 2009 at 10:05 PM
Posted By: seismicburban
Date Posted: July 09, 2009 at 5:31 PM
SO you are saying that I definately need another alt ------------- AVIC F90BT
4 15L7s
4 ZX 1000.1s
BIG 3
295 AMP ALT
2/0
2 KINETIK HC 2000
STILL GETTING VOLT DROPS
wth???????
Posted By: i am an idiot
Date Posted: July 09, 2009 at 6:12 PM
Earthquakes take a lot of power to duplicate. You may need to UpSeis your alternator. Your bass amps WILL pull around 100 amps each.
Posted By: seismicburban
Date Posted: July 09, 2009 at 7:46 PM
Do you know a company that makes a dual alt kit for a suburban with 454?
-------------
AVIC F90BT
4 15L7s
4 ZX 1000.1s
BIG 3
295 AMP ALT
2/0
2 KINETIK HC 2000
STILL GETTING VOLT DROPS
wth???????
Posted By: richardparker
Date Posted: July 09, 2009 at 9:13 PM
try mechman the make great alts and I'm pretty sure they have a dual alt setup for your ride.
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