How many amps will a 250 watt amp draw

gratalica bom Bronze Member Username: Subwoofaz_rock Brisbane, Queensland Australia Post Number: 37 Registered: Jul-06	Posted on Friday, July 21, 2006 - 07:49 GMT im just wonderin how many amps does a 200 to 250 watt amplifer draw ??
Chauncey Brown Gold Member Username: Chaunb3400 Huntsville, Alabama U.S. Post Number: 8177 Registered: Jul-05	Posted on Friday, July 21, 2006 - 07:57 GMT http://wickedcases.com/caraudio/charging.html
marc Silver Member Username: Van_man Boston South, MA Post Number: 773 Registered: Mar-06	Posted on Friday, July 21, 2006 - 11:36 GMT 250/14.4=17.36 So around 20 amps
Muddy Waters Gold Member Username: Basshead86 Google is your Friend, FL Post Number: 4035 Registered: Aug-05	Posted on Friday, July 21, 2006 - 13:38 GMT you haev to take into account marc, amplifier efficiency..... your formula shows that the amp is 100% efficient...which none are. a very good generic way to go by is in Chauncey's link. multiply your 20 amps by 1.4 if it is a Class a/b amp or multiply your 20 amps by 1.2 if it is a Class d amp.