i got my EA 300 amp alt. for a little less then 500

 

ya, on a 20hz tone my gauge can get to 1/4

 

mine does the same thing but not sure at what hz, i need to upgrade my alt too. its getting weak. everytime my bass hits it drops my gaugequiet a bit even when im driving at 55 mph w/ rpm's up, and when im just idling it seriouslydrops it, almost to the 9. but i am holding off for just a lil while till i can get a batt too and the big 3 and run my 0 ga power wire. hopefully after the 1st of the year

 

well, I just said 20hz as an example.....and that would be at idle.

 

Just to let you all know the voltage meter on the cluster is a good way to get an inaccurate reading of your battery voltage...Try using a DMM at the battery for an accurate reading..Or for a more permanent meter stinger makes some nice Digital VM's you can mount into the dash with a little customization...

 

My alpine was digital and would drop under 12 volts on big hits. and that was only 550watts, power hungry lil bugger.

 

Oh, I know it's by no means an accurate measurement...

But it DOES tell you when somethings drawing a lot of juice

 

yea thats true, i know its not accurate but when it drops so does your juice

 

accurate enough for me. saves me $10 on a dmm too