Nutter166 |
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Joined: 22 Feb 2008 Wales Licks: 2 Karma: 14
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Just looking for some help here,
I'm trying to figure out the 8ohm power rating for power amplifier that only gives spec's for 4 and 2ohm power ratings.
What I'm looking at gives 1250w@4ohms and 1500w@2ohms, however I'm running an 8ohm PA system.
How do you convert the 4ohm power rating into 8ohms? And what would it be in this situation?
Also since a rating for 8ohms isn't given does this mean the amplifier isn't capable of holding an 8ohm load (even though it is less demanding load compared to 4 and 2ohms)?
Note: The PA system won't be running in series, this is direct one output to one input. |
gshredder2112 |
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Joined: 03 Sep 2010 United States Licks: 3 Karma: 22
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well personally i havent a clue how to do it,but if you can figure this out your set.
http://www.onlineconversion.com/ohms_law.htm
\M/(*-+)
gs2112 |
DanielM |
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Joined: 11 Apr 2011 United Kingdom Lessons: 1 Karma: 12
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Well watts are power and ohms are resistance
V=I/R and P=IV
Therefore the watts it will give would be equivilant to P=RV^2 or power=resistance multipled by voltage squared.
Although personally I'd treat anything you work out this with caution. Not because the equation is wrong but because I'm not 100% sure if this is the right context (AC vsDC power etc) |
Nutter166 |
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Joined: 22 Feb 2008 Wales Licks: 2 Karma: 14
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Cheers for the response guys, I managed to see my uni lecturer about it and from my understanding i goes like this:
all ratios referenced the power rating @4ohms.
8ohms = 100w = .5
4ohms = 200w = 1
2ohms = 400w = 2 |
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