Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Flickering headlights with an earthquake phd2
Flickering headlights with an earthquake phd2
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 22nd February 2012, 02:35 AM   #1
Sinister7 is offline Sinister7  Canada
diyAudio Member
 
Join Date: Feb 2012
Default Flickering headlights with an earthquake phd2

Hey all. I'm going to start this off from the beginning. I have a 1999 BMW 328i that has a 120amp Valeo alternator and a brand new battery 1000 cca battery. I have 2 10" mtx 600 watt jackhammer subwoofers run in series and an earthquake phd2 amplifier. Not to sure ohm ratings and whatnot. Also the wiring was all re run 0 gauge for power with a 5 farad cap. The battery on this car is located in the trunk on these cars but there can be a second battery installed if needed. Now the problem is everytime I turn the bass up on my alpine head I get flickering headlights and interior reading lights. Soon as I turn it down with a little bass it's fine. Now doing just a draw test with the bass super loud I was getting an intermittent drop sometimes to .9 volts but for the most part it was staying at 14.1v charge. HELP!!!!
  Reply With Quote
Old 22nd February 2012, 05:16 PM   #2
Perry Babin is offline Perry Babin  United States
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
A drop of 1 volt will make a big difference. The alternator probably doesn't have enough output current to keep the headlights from dimming. Even if it does, there's a bit of lag built into the regulator that will prevent it from keeping the voltage precisely at 14.1v all of the time.
  Reply With Quote
Old 22nd February 2012, 06:59 PM   #3
Sinister7 is offline Sinister7  Canada
diyAudio Member
 
Join Date: Feb 2012
Thanks. Is there another way around upgrading the alternator? Is a second battery going to make any difference?
  Reply With Quote
Old 22nd February 2012, 08:05 PM   #4
Perry Babin is offline Perry Babin  United States
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
A second battery probably won't make a difference. All real solutions are going to be expensive. Upgrading the alternator isn't necessarily going to solve the problem completely.
  Reply With Quote
Old 23rd February 2012, 12:30 AM   #5
Sinister7 is offline Sinister7  Canada
diyAudio Member
 
Join Date: Feb 2012
What's the best solution in your opinion?
  Reply With Quote
Old 23rd February 2012, 11:30 AM   #6
Perry Babin is offline Perry Babin  United States
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
How do you define best?
  Reply With Quote
Old 23rd February 2012, 01:33 PM   #7
TheBaronGroog is offline TheBaronGroog  United Kingdom
diyAudio Member
 
Join Date: Aug 2011
Try whichever is cheapest 1st-check with BMW whether a larger altnerator from a higher model will fit and compare that to the cost of a 2nd battery-ultimately both is better. Try removing the cap-sometimes they can do more harm than good.
  Reply With Quote
Old 24th February 2012, 03:26 PM   #8
lowered98z24 is offline lowered98z24  United States
diyAudio Member
 
Join Date: Feb 2012
Location: michigan
caps only store some power but do more harm than help from what i seen.if it was me i would do the big 3 upgrade and if it still is having the same issue then its safe to add the 2nd battery.if u are unsure of how to do a big 3 it walk u through it on youtube.hope this helps
  Reply With Quote
Old 26th February 2012, 01:52 PM   #9
Sinister7 is offline Sinister7  Canada
diyAudio Member
 
Join Date: Feb 2012
Well I have ripped my alternator out and sent it to the rebuild shop. The brushes and slip rings are worn right out of it. So I am going to attempt a rebuild on that first. Also adding a second battery wont be very expensive at all. I got one lying around my house and there is a special place for one under the hood in the front of the car on these. I guess it was an option to have them up front from the factory in europe. All i need is the cables and battery tray.
  Reply With Quote
Old 26th February 2012, 11:12 PM   #10
Perry Babin is offline Perry Babin  United States
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
Extra batteries won't generally help unless the voltage is dropping to below 12v. Even then, they won't help much. If the alternator charges at 13.8 and the voltage drops to 12v, the lights will dim significantly.
  Reply With Quote

Reply


Flickering headlights with an earthquake phd2Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Earthquake PHD2 amp fongman Car Audio 8 30th November 2016 12:59 PM
Earthquake PHD2 Hectorscaraudio Car Audio 1 14th November 2011 10:10 PM
Earthquake PHD2 seems to lower output??? ppia600 Car Audio 94 14th November 2011 07:46 PM
Earthquake D200hc/phd2 modification? spooney Car Audio 32 19th March 2010 03:51 PM
PPI A600 or Earthquake PHD2? Which for two 12" in your opinion?? ppia600 Car Audio 5 7th September 2008 03:45 PM


New To Site? Need Help?

All times are GMT. The time now is 06:43 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.79%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki