Amperage On AB amplifiers

LiL Jon Silver Member Username: Lil_jon Post Number: 170 Registered: Jul-05	Posted on Tuesday, October 11, 2005 - 17:56 GMT whats the amperage pulled per wattage? I know its ''Watts''/12 for Class D whats the format for AB amps?
MuddyWaters Gold Member Username: Basshead86 Ocala, FL USA Post Number: 2278 Registered: Aug-05	Posted on Tuesday, October 11, 2005 - 18:07 GMT multiply whatever the amp does at its maximum RMS output by 1.4 to get what the amp will pull in "amps" to produce it's power. http://www.wickedcases.com/caraudio/charging.html
MuddyWaters Gold Member Username: Basshead86 Ocala, FL USA Post Number: 2279 Registered: Aug-05	Posted on Tuesday, October 11, 2005 - 18:09 GMT i'm sorry you divide, not multiply 1200wRMS/1.4 equals 140A (that's what my amp pulls) edit i am having a hard time huh? LOL you take the wattage, divide by 12, THEN!!!!! multiply by 1.4. maybe i should read GW's article again huh? lol
MuddyWaters Gold Member Username: Basshead86 Ocala, FL USA Post Number: 2280 Registered: Aug-05	Posted on Tuesday, October 11, 2005 - 18:14 GMT for class D amps you take the wattage, divide by 12, then multiply by 1.2
James Longo Gold Member Username: James1115 Wilton, Ct Post Number: 4016 Registered: Dec-04	Posted on Tuesday, October 11, 2005 - 18:27 GMT its watts(rms) * efficiency / by 10
LiL Jon Silver Member Username: Lil_jon Post Number: 171 Registered: Jul-05	Posted on Tuesday, October 11, 2005 - 18:32 GMT now im confused
James Longo Gold Member Username: James1115 Wilton, Ct Post Number: 4017 Registered: Dec-04	Posted on Tuesday, October 11, 2005 - 18:36 GMT a class d amp is 80% efficient so to get current draw say you have a 1000 watt class d amp you take 1000 * .8 / 10 = 80 amps another quick way to get a average is do watts divided by 12 in this case it would be 1000 / 12= 83.3 amps
LiL Jon Silver Member Username: Lil_jon Post Number: 173 Registered: Jul-05	Posted on Tuesday, October 11, 2005 - 18:39 GMT OK i READ YOU GO HERE https://www.ecoustics.com/electronics/forum/car-audio/167391.html
James Longo Gold Member Username: James1115 Wilton, Ct Post Number: 4020 Registered: Dec-04	Posted on Tuesday, October 11, 2005 - 18:43 GMT I responded on that page.
GlassWolf Platinum Member Username: Glasswolf Wisteria, Lane USA Post Number: 10731 Registered: Dec-03	Posted on Wednesday, October 12, 2005 - 13:49 GMT with a class D amp, divide the wattage by 12. that's the amperage draw at 100% efficiency. Then multiply that resulting amperage by 1.2 to add 20% inefficiency. class AB, you multiply by about 1.5 for 50%

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