SoundDomain.com: voltage reducing

You are not logged in. [Log In] SoundDomain » Forums » Car Audio General » Electrical Explanations » voltage reducing

Page 1 of 2

Topic Options

#1709131 - 09/22/09 06:17 PM

voltage reducing

highend64
Member

Registered: 11/04/00
Posts: 1867
Loc: CA

Offline

For a long time I have been monitoring my voltage on my vehicle. Within 4 month time my voltage has drop about half a volt. It was reading at about 14.48 volts 5 month ago and now it been reading 14 maximum with high RPM. Fortunately the regulator still works but I am starting to think if the problem presumes, the voltage regulator will eventually go out.

I have check the belt and it is fine. My battery seem to be fine also because it still rest at 12.8 volts.

_________________________
88 Honda Accord

Alpine
CDM-9803
JBL P80.2 main amp
Alpine SPS-500 front speakers
Atomic AT-1500.1D sub amp
Diamond Audio 10" D3v1 in a 1.25 cu.ft. ported box
tuned to 33hz.

Top

#1709142 - 09/22/09 08:35 PM

Re: voltage reducing [Re: highend64]

kamikazePSI
Super Trooper

Registered: 12/02/01
Posts: 5824
Loc: TX

Offline

if your battery is fully charged and you're amperage draw isn't substantial, the voltage doesn't have to be as high as it could be...

_________________________
PM me if anyone wants to buy a 154 count of metra dash kits, and wiring harnesses from me. nearly all of them are unopened. asking $175 + shipping.

Top

#1709225 - 09/23/09 06:47 AM

Re: voltage reducing [Re: kamikazePSI]

imtfox
Ban Stick Swinga

Registered: 08/05/99
Posts: 25777
Loc: Omaha, NE

Offline

Are you taking the readings at the same temps? There can be significant differences if the alt is cold, hot, or somewhere in between. It also depends on the condition of your battery....

_________________________
"Who's house?? RUN'S HOUSE!!"

Stangeriffic2002 "Peace on earth is a cycle. You have to be willing to sacrifice 50-100K douchebags every 75-100 years in order to keep everyone else in check."

Do you have a problem you need addressed?? Use Private Message or Notify

Top

#1709644 - 09/23/09 06:34 PM

Re: voltage reducing [Re: imtfox]

highend64
Member

Registered: 11/04/00
Posts: 1867
Loc: CA

Offline

No different in temperature but I did notice to is that if the car was turned off for a few hours and start again it would read at 14.45. After a few minutes the voltage would start dropping and then it would settle at around 14.1 or .2.

I only had the battery for 11 month.

_________________________
88 Honda Accord

Alpine
CDM-9803
JBL P80.2 main amp
Alpine SPS-500 front speakers
Atomic AT-1500.1D sub amp
Diamond Audio 10" D3v1 in a 1.25 cu.ft. ported box
tuned to 33hz.

Top

#1709705 - 09/23/09 08:25 PM

Re: voltage reducing [Re: highend64]

keep_hope_alive
in another life, i'm a serial killer
SD I Power Bombed the Undertaker

Registered: 04/24/07
Posts: 13370
Loc: Quad Cities, IL

Offline

are you using the cigarette lighter type of volt meter?

_________________________
Electrical basics and Car Audio links:
Wanna know more? Links and References
Ohm's Law --- Ohm's Law calculator --- Wiring Harness Color Codes --- Wire Sizing Chart

My 2001 Accord EX V6 on Car Domain
Check my recent progress in SD Show Off

Top

#1709874 - 09/24/09 07:45 AM

Re: voltage reducing [Re: keep_hope_alive]

highend64
Member

Registered: 11/04/00
Posts: 1867
Loc: CA

Offline

Yes I am.

_________________________
88 Honda Accord

Alpine
CDM-9803
JBL P80.2 main amp
Alpine SPS-500 front speakers
Atomic AT-1500.1D sub amp
Diamond Audio 10" D3v1 in a 1.25 cu.ft. ported box
tuned to 33hz.

Top

#1709906 - 09/24/09 08:44 AM

Re: voltage reducing [Re: highend64]

Comic Book Guy
Worst. Episode. Ever.
SD First guy voted off Survivor

Registered: 08/11/09
Posts: 654

Offline

^with that said, get out your DMM and take readings at both your amps and at the battery. those will be far more accurate readings.

_________________________
Daily Ground Pounder

http://www.powerbassusa.com

- meh, if you close your eyes you can't tell the difference. /quote

Top

#1710109 - 09/24/09 03:30 PM

Re: voltage reducing [Re: Comic Book Guy]

keep_hope_alive
in another life, i'm a serial killer
SD I Power Bombed the Undertaker

Registered: 04/24/07
Posts: 13370
Loc: Quad Cities, IL

Offline

i wouldn't think the tolerance on that volt meter is better than a few tenths of a volt. it's purpose is to let you know if you drop to 12V or something, not to get high accuracy. if you want good accuracy, get a permanantly installed digital gauge from Dakota or Stinger.

Top

#1710150 - 09/24/09 05:33 PM

Re: voltage reducing [Re: keep_hope_alive]

highend64
Member

Registered: 11/04/00
Posts: 1867
Loc: CA

Offline

This what I have:

http://www.equus.com/popup_image.php?product_id=3721

_________________________
88 Honda Accord

Alpine
CDM-9803
JBL P80.2 main amp
Alpine SPS-500 front speakers
Atomic AT-1500.1D sub amp
Diamond Audio 10" D3v1 in a 1.25 cu.ft. ported box
tuned to 33hz.

Top

#1714576 - 10/05/09 07:48 PM

Re: voltage reducing [Re: highend64]

highend64
Member

Registered: 11/04/00
Posts: 1867
Loc: CA

Offline

Just measure both the output on the battery and through the cigarette jack and the jack is one tenth of a volt lower then at the battery.

_________________________
88 Honda Accord

Alpine
CDM-9803
JBL P80.2 main amp
Alpine SPS-500 front speakers
Atomic AT-1500.1D sub amp
Diamond Audio 10" D3v1 in a 1.25 cu.ft. ported box
tuned to 33hz.

Top

Page 1 of 2

Previous Topic View All Topics

Index Next Topic

Moderator: imtfox, keep_hope_alive, xTHANATOPSISx, TtownCLS

Hop to: