my gauges move when my stereo is turned up
#1
Contributing Member
Thread Starter
my gauges move when my stereo is turned up
Right now im running...
Alpine 9805 headunit
Rockford Fostgate 4" up front
Alpine Type R 6x9's in the back
powered by a kenwood KAC-8402 amp
the speakers are getting 60watts RMS probably around 75-80 max
anyways when i turn up the volume my speedo starts jumping around my tach will stay at 0 and everything else will wiggle..
now my question is is this just because of vibrations or is my little 4 channel amp pulling enough power that i need a cap?
Im scared because i was planning on adding 2 subs both running 825 watts rms...i know im gonna need atleast a 1farad cap for each of those
after its all said and done at any given time i could have about 5600 watts pulling at one time...am i gonna need a bigger battery or alt?
Alpine 9805 headunit
Rockford Fostgate 4" up front
Alpine Type R 6x9's in the back
powered by a kenwood KAC-8402 amp
the speakers are getting 60watts RMS probably around 75-80 max
anyways when i turn up the volume my speedo starts jumping around my tach will stay at 0 and everything else will wiggle..
now my question is is this just because of vibrations or is my little 4 channel amp pulling enough power that i need a cap?
Im scared because i was planning on adding 2 subs both running 825 watts rms...i know im gonna need atleast a 1farad cap for each of those
after its all said and done at any given time i could have about 5600 watts pulling at one time...am i gonna need a bigger battery or alt?
#2
Registered User
Join Date: Feb 2005
Location: thunder bay, ontario
Posts: 895
Likes: 0
Received 0 Likes
on
0 Posts
voltage drain wouldn't effect your speedo (mechanical on yours i believe?), and as for vibrations... you don't seem to be running a sub right now? so, i'd count that out too.. you sure it only jumps around when the stereo is on? i'd say 'stare at it to make sure that it moves with the beat' but that would be dangerous
if you end up having 2 subs running 825w rms, i would definetely get a cap.. my friend had a 250w rms sub in his 95 runner and when it hit, the needle on the voltage gauge dropped (long with the brightness of all lights)
if you end up having 2 subs running 825w rms, i would definetely get a cap.. my friend had a 250w rms sub in his 95 runner and when it hit, the needle on the voltage gauge dropped (long with the brightness of all lights)
Last edited by green91runner; 06-09-2005 at 01:39 PM.
#3
Contributing Member
Thread Starter
if your friend is having that issue his battery is bad...i run a 200watt rms sub (not now) and have no issues at all...a cap is really needed over 500watts..
ive ruled out its vibration...guess when i pull the dash to put in tnew bulbs il have to stick some dynamat somehwere in there
ive ruled out its vibration...guess when i pull the dash to put in tnew bulbs il have to stick some dynamat somehwere in there
#4
Registered User
Join Date: Feb 2005
Location: thunder bay, ontario
Posts: 895
Likes: 0
Received 0 Likes
on
0 Posts
um.. you mean alternator right? cause when your truck is on, its all running off the alternator.. but yea, he threw in a cap and it fixed his problem.
#5
Contributing Member
Thread Starter
haha sorry i was thinking in terms of the car being off....but yes his alternator probably needs a bit of an upgrade if he cant run 250watts of stuff...im running 635 right now with no problems
500watt for my 4channel amp
135 for my PIAA's
500watt for my 4channel amp
135 for my PIAA's
#6
Registered User
Caps dont do squat for light dimming. BandAid fix at best. Alternator or batteries first, then caps...
When I had 4" in my 2nd gens dash amped, my tach would jump around too. I think it had to do with the magnetic field generated by the coil....
Now with over 8800 watts rms just on bass EVERYTHING moves....lol
When I had 4" in my 2nd gens dash amped, my tach would jump around too. I think it had to do with the magnetic field generated by the coil....
Now with over 8800 watts rms just on bass EVERYTHING moves....lol
#7
Registered User
Join Date: Nov 2003
Location: Blowing Rock, NC
Posts: 536
Likes: 0
Received 0 Likes
on
0 Posts
I had some funny problems with gauges and stereo in the past. I discovered all it was, was the ground from just above the passenger side exhaust manifold to the firewall. It was completely disconnected.
You might want to check and make sure there is a good connection, and it wouldn't hurt to move to a larger gauge ground wire.
You might want to check and make sure there is a good connection, and it wouldn't hurt to move to a larger gauge ground wire.
Trending Topics
#8
In keeping with "ASU4runner's" train of thought, I'd suggest the "Big 4" grounding cable upgrade that I've seen mentioned on the site ("search" feature...hint-hint), although I think that the founding credit for this "mod" goes to a Mr. Roger Brown.
That will help the battery & altenator with charge recovery by helping to increase the charges flow rate (kinda liken to the intake mod to increase airflow) & thereby eliminate the "draw" factor from associated componetry when your system places it's demands on it.
It is also way cheaper than a cap (although you will need one or two judging from what you've mentioned your intentions to be), a new battery or an altenator upgrade, & is a base/starting point upgrade for all additional upgrades mentioned here.
Simply put: "You can't go wrong if you cover all of the bases."
That will help the battery & altenator with charge recovery by helping to increase the charges flow rate (kinda liken to the intake mod to increase airflow) & thereby eliminate the "draw" factor from associated componetry when your system places it's demands on it.
It is also way cheaper than a cap (although you will need one or two judging from what you've mentioned your intentions to be), a new battery or an altenator upgrade, & is a base/starting point upgrade for all additional upgrades mentioned here.
Simply put: "You can't go wrong if you cover all of the bases."
Last edited by 94x4; 06-15-2005 at 07:23 PM.
#10
Originally Posted by 89macrunner
omg 8800 watts RMS just for bass...and i thought my 2300 watts RMS was a lot for everything
haha oh well i keep dreaming
haha oh well i keep dreaming
Thread
Thread Starter
Forum
Replies
Last Post
jasonty
Pre 84 Trucks (Build-Up Section)
41
12-23-2018 01:00 PM
Poncho0206
95.5-2004 Tacomas & 96-2002 4Runners
3
07-10-2015 06:21 PM