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just checkin
Posted: Fri Feb 13, 2009 8:17 pm
by jgs07
set my gain on my amp using a multimeter,
http://www.harborfreight.com/cpi/ctaf/d ... mber=90899 this one right here i did everything i should have. rms of my amp 1600x4ohm(speak ohm load)=6400 square root=80 on the multimeter it read 00.8. is this correct? aslo quick question where i put the speaker ohm load is it the ohm load of the speaker or do i put what kind of load is being presented? i have them wired 1 ohm.
Posted: Fri Feb 13, 2009 10:36 pm
by k0rnyfr33k
i havent done this in a long time.... but i think it needs to 80.. like if it said 8.8 i needs to read that.... not sure im tired as hell so if im wrong sombody please correct....wait for the others b/c i dont want to be responsible for blowing your whole system up...lol.... just trying to help though
Posted: Sat Feb 14, 2009 10:01 pm
by k0rnyfr33k
anybody else gunna comment on this besides me?
Posted: Sat Feb 14, 2009 10:28 pm
by Ryan from Ohio
Well if you run your numbers correctly you should show 80 on your DMM. But you have to be playing a track and you need to have the volume up.
Also note this is AC Voltage, so it VARIES! So you gotta watch the meter until it hits the number.
Posted: Sun Feb 15, 2009 7:40 am
by Bwcad1
use a test tone not music.
Posted: Sun Feb 15, 2009 7:15 pm
by jgs07
i did use a 50 hz tone. are my calculations correct tho?
Posted: Tue Feb 17, 2009 8:39 pm
by jgs07
anyone????????? is there something i did wrong????????????
Posted: Tue Feb 17, 2009 9:24 pm
by k0rnyfr33k
jgs07 wrote:anyone????????? is there something i did wrong????????????
I believe your calculations are correct i did it before and i got 80. But do not quote me on this, i dont want to be the result of your subs blowing
Posted: Wed Feb 18, 2009 3:19 pm
by k0rnyfr33k
Just for jgs's reassurance, and to make sure im right. The calculations are correct,right?
Posted: Wed Feb 18, 2009 3:45 pm
by Ryan from Ohio
He probably has the DMM set wrong.
Those cheap DMMs are weird at time. If you needed 80 and it was showing .8 I bet your good.
80 and .8 is a HUGE difference...