Is a Milwaukee miltimeter. Had it some good years now.
VexXx Dogg wrote:lemme be the devil's advocate.
For a non-competition vehicle (forgive my assumption) how much "audio quality" are you really losing when volatge dips to 13.6? Can the difference be measured?
healthy charging sytems usually start at 13.8
IMHO it seems to be an expensive placebo, no offense intended to anyone in this thread
Outside of the dynamic range part, I have at minimum a good 2500Wrms on bass and 800Wrms up front. At full tilt (before cap with bass heavy music) the voltage will drop to low 12.xV range and that reading was taken from an in car volt meter, so the voltage at the amplifiers will be a bit less.
Now with the cap installed, I can play multiple songs at full tilt and the lowest voltage I saw was 13.6V.. and that would charge back up quickly in between songs or in between bass notes. All this with the stock 80A alt and small lead-acid batt. So there are benefits to having this, vs an alternator upgrade or additional batt on stock alt upgrade etc.
As for the video and dynamic range part, I just figure the slow refresh rate on the meter isn't showing the full story on the voltage drop at the amp. Should have used my o-scope instead.. Also, I was not playing the system very loud during that video. It wouldn't be hard to do a mathematical calculation to find out the power difference from vid 1 to vid 2 though and that could theoretically show the difference in power that amp makes from 13.6 to 14.05.