Reading a multimeter

[Haden 10+ year member]

Hey, im just trying to figure out which setting to use on the multimeter when im setting my gains. I cant figure out which one, heres a pic of a multimeter like mine

Click to read more...

 

[miker 5,000+ posts]

Put it on the 200, in the "A" sections... I believe..

 

[Atimm693 10+ year member]

Set to AC, calculate you voltage below.

http://www.subwoofertools.com/forum/setgain.asp

 

[Haden 10+ year member]

i already have the voltage calculated but is there one setting that just says AC? or do i put it on 200 in the A section?

 

[explorer2 10+ year member]

set it to the 200 in the v~ area, for AC Voltage

 

[ultimate157 5,000+ posts]

Put it two clicks clockwise (200 Vac) Basically each section is what you're measuring, and the number is the limit of each setting (Used to get the best accuracy)

 

[Haden 10+ year member]

K thanks ill do that

 

[vehementSPL 10+ year member]

I say that voltage calculator is crap. First off with no speaker load the amplifier sees MASSIVE ohm rise so the amplifiers ohm wouldn't matter in that equation . Actually I took it at 2 ohm and and 2000 watts. told me 63.2 volts. when you divide that in two for the amperage at 2 ohms then multiply amp and volts together gives you right about 2000 watts. Sounds good right? Well that is at 2 ohm. With no load amplifiers see WAY over its rated ohm to my knowledge. Maybe there is something I am not taking into consideration here so any electronics experts please chime inI know my amps when they maxed out without a load was like 110volts (I know cause I had set gains with a load and I had the speakers unhooked for something so I threw the meter on just to see what would happen) so I have a feeling you won't get near your max output doing it like this but there again I am no expert. But please don't contradict me if you are going to just guess LOL. I know we will get a lot of hearsay on this. But I would like to hear some proof

 

[vehementSPL 10+ year member]

Actually after writing that I decided to see by "their rules" how many watts of an amplifier would I need to have it set at 110volts for a 1 ohm amp (which is what I had) My amp was 1600 watts. for their scale you would need over a 12,000 watt amplifier.... Again due to imp rise. If you could take imp rise into factor and figure it in there then you probably would get it pretty close. But then also different boxes have different imp on subs as well so even wired 1 ohm some boxes will see 1.2 ohms sometimes and some will NEVER see below 2 ohm.