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two channel amp to run subs


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i am an idiot 
Platinum - Posts: 13,579
Platinum spaceThis member consistently provides reliable informationspace
Joined: September 21, 2006
Location: Louisiana, United States
Posted: April 17, 2010 at 9:18 PM / IP Logged  

It has been several months since he posted the math.  But this is what I am getting from what he posted.  2 X 50 = 100 means the amp has 2 50 amp fuses for a total of 100 amps current capacity.  100 X 14.4 is the ampunt of wattage input to the amp.  1,440 watts input multiplied by the efficiency rating of a class A/B amplifier, which is around 50 percent efficient.  1,440  X (.)5 = 720

14.4  is the charging voltage of your vehicle if we ived in a perfect world.

ianarian 
Copper - Posts: 516
Copper spacespace
Joined: April 24, 2009
Location: California, United States
Posted: April 18, 2010 at 2:15 AM / IP Logged  
Ohms law-    voltage x amperage = wattage (I x E = P)
That efficiency is a killer!   Class D baby! YAAA! 80% club!
This is what I do for FUN!
harobikes333 
Copper - Posts: 53
Copper spacespace
Joined: May 08, 2009
Location: North Dakota, United States
Posted: April 19, 2010 at 11:45 AM / IP Logged  
I'm planning an overhaul of the alternator to put out 180 amps so I'd max out this amp.
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