Somthing is not working right in my setup
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=65238
Printed Date: May 26, 2024 at 6:56 PM
Topic: Somthing is not working right in my setup
Posted By: bginamercedes1
Subject: Somthing is not working right in my setup
Date Posted: October 29, 2005 at 10:11 AM
for some reson when my subs hit (2x 12W3's) the voltage in the back would drop and then amp (JL 500/1) would turn off and then back on.???? i also have a 300Watt amp hooked up to all this for my speakers and a Cap???? im not sure but i think it could my Cap that went bad??? any other ideas????
(the dash lights in my car deim just a little when the subs hit hard, but it did not be for/..) cap is 1.5uF
Replies:
Posted By: DYohn
Date Posted: October 29, 2005 at 10:16 AM
Many amps will shut down when the vehicle's voltage drops too low. Sounds to me like your system is too large for your vehicle and you need a high output alternator. ------------- Support the12volt.com
Posted By: bginamercedes1
Date Posted: October 29, 2005 at 10:41 AM
hummm i see what your saying and it make sence but i have been run this same sytem from some time now with no problems.?? can caps go bad???
Posted By: KarTuneMan
Date Posted: October 29, 2005 at 11:07 AM
caps DO go bad....just like a battery
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Posted By: bginamercedes1
Date Posted: October 29, 2005 at 12:08 PM
but the light on the cap when i got it it use to go off but now it just stays on all the time.. donsnt it go off when the cap is fully charded
and i had porblems with the remote on the cap it would not turn off and so i killed my battery...
Posted By: DYohn
Date Posted: October 29, 2005 at 12:25 PM
Remove the cap from the system. See what happens. ------------- Support the12volt.com
Posted By: bginamercedes1
Date Posted: October 29, 2005 at 2:09 PM
lol it is the same with the cap and with out the cap......so it comes down to me buying a new cap and one have any ideas on a good cap...not to expencive and some were around 1.5F??
Posted By: dwarren
Date Posted: October 29, 2005 at 2:16 PM
The cap is NOT the issue, you car's electrical system is. As mentioned above by DYohn, a highout put alternator is in your future.
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Posted By: bginamercedes1
Date Posted: October 29, 2005 at 4:06 PM
how is mu electrical system the proble when i had it set up befor with i got every thing brand new and it worked just fine for like 6 mouths and all of a suden my cap starts to do weird things and when i have it on or off it makes no differents a problem with my electrical system>>>????? the voltage just jumps between 13-11.4 volts and i know my alternator is just fine because it has supported the system for some time,i even had some one else take a look at it.
any way when i hooked it up the first time my system with out a cap my lights would dim and when i put one on it did not dum and all of a sudden the light on the cap wont turn off that signifies that the cap is full and my lights start to dim...
Posted By: bginamercedes1
Date Posted: October 29, 2005 at 4:10 PM
the voltage really drops only when the subs really hit but right after it jumps up to 13+ volts...so a cap fixes this right?>???
Posted By: dwarren
Date Posted: October 29, 2005 at 4:21 PM
bginamercedes1 wrote:
lol it is the same with the cap and with out the cap
If it is the same either way, you just elminated the cap as your problem. This is deductive reasoning. So if I understand what you are saying, the voltage drops with the cap NOT in use, this would leave one to believe the electrical system is at fault. -------------
Posted By: bginamercedes1
Date Posted: October 29, 2005 at 4:24 PM
https://cgi.ebay.com/PHEONIX-DIGITAL-1-5-FARAD-CAPACITOR-BRAND-NEW-2005_W0QQitemZ5822606816QQcategoryZ75387QQrdZ1QQcmdZViewItem
that is the cap that i got...
Posted By: bginamercedes1
Date Posted: October 29, 2005 at 4:26 PM
the right now the voltage drops with and without the cap sorry i did not word it right. but with out a cap my voltage droppos and my 500/1 amp turns off and then it done not sound right because the amp has to power on again and it take a little bit of time
Posted By: bginamercedes1
Date Posted: October 29, 2005 at 4:33 PM
the voltage only drops when the system really thumps but otherwise it stays at a stady 13+ volts
Posted By: geepherder
Date Posted: October 29, 2005 at 5:19 PM
Your sound system is demanding too much from your electrical system, and over time has worn down the alternator. A cap will not fix this problem, only help to partially mask it. A cap does not ensure that your amp will see a constant 13 volts if the alternator cannot supply it. The purpose of a cap is to smooth out the ripples on the supply voltage.
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My ex once told me I have a perfect face for radio.
Posted By: arrow12
Date Posted: October 29, 2005 at 10:12 PM
geepherder is right. Everything will start to wear out over time. Your alternator has started to wear out because of your constant use. The current draw of your system seems to be borderline too much for stock alternator. What kind of car do you have again?
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That's my opinion. Take it, leave it, or correct me.
Posted By: DYohn
Date Posted: October 29, 2005 at 10:50 PM
dwarren is correct. You eliminated the cap as a possible source of your current draw, which is exactly what I thought would happen. The problem is your alternator or a bad battery, or both. And by the way, leave the cap out of your system after you upgrade your alternator. It is not needed. ------------- Support the12volt.com
Posted By: bginamercedes1
Date Posted: October 30, 2005 at 7:20 PM
i think all of you are right,.. i have a Mercedes 300CE 88 and it has a stok alternator that use to support all my stuff but not dose not...aw looks like i need to get a new one.. any one know a good alternator to get???
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