When bass hits. Voltage drops.

["350Vortec"]

Well first of all i will say i made a ported box the other day and i think it sounds way worse than my sealed. I made it to all the specs it needed to be to. Im going back to sealed.

Anyways. Everytime in drive, when i come to a stop. My sub woofers will make my voltage drop hard. Do i need a cap? Or....What.

Its fine when moving and in park.

 

[Rollin Thunder]

idle is higher when moving or in park. So alt is generating more electricity, I have a cap, but also an upgraded alt cause all adding an extra batter does (basically a cap) is stress the alt even more when it has to charge both the stock bat, and the cap. plus run your extra equipment. You might try getting a smaller pully on the alt. That way it will spin faster when at idle. (actually it will spin faster all over the board, but it will at idle which is where it seems you need it).

 

[drowndindreams]

it happens to everybody. just add a capacitor, or another battery. i sure would like one.

---------- Post added at 03:12 AM ---------- Previous post was at 03:10 AM ----------

it happens to everybody. just add a capacitor, or another battery. i sure would like one

also, when youre moving, the alternator automatically charges the battery, that's why the meter stays at a certain number until you slow down to 10MPH or stop.

i wouldn't worry about it, although its extremely annoying

 

[DJTricky]

BIG NO NO, dont just add another battery, it will burn out your stock alt 2 times faster, you NEED a ** alt. i would go with this one

http://www.mean-green.com/products/200amp.html

 

[cmcarr85]

Have you done the big 3 or whatever it is called?
Also how old is the battery? How many watts are you running with your system? How old is the alternator?

---------- Post added at 12:03 PM ---------- Previous post was at 12:02 PM ----------

Also I dont know where you are but in South Florida there is an alternator shop that will rebuild your stock alternator to a higher output one for cheaper than buying a new one.

 

[blueflamed03]

get a better alt.

 

[cmcarr85]

Just found this.. Never seen it before but figured I would post it up...

http://store.alternatorparts.com/ad244_truck_alternators.aspx

 

[Brandon X]

Just found this.. Never seen it before but figured I would post it up...

http://store.alternatorparts.com/ad244_truck_alternators.aspx

I'll probably buy the 170 amp alt for my tahoe when I go to install my system. Should be perfect if I buy a new Optima, and maybe do the big 3.

 

[drowndindreams]

hey DJ, i also have huge voltage drops after i upgraded the big 3. without buying an alternator or another battery, can i cut some corners to keep the voltage higher?

 

[DJTricky]

you could send out your alt to get modded, there are some shops that re-wind them for more output.