how much less current A/B=D?

6three6mafia6 · Post by **6three6mafia6** » Fri Dec 24, 2004 12:35 pm

alright everyone i got a quick question, i got a kicker 800.2 for my xxx 12(2ohm) and recently ive been suffering electrical problems(already got a new HO alternator on the way,put new battery for now) and im gona be getting 150 amps , i was just wondering if i were to sell my kicker 800.2 and get a ED amp(mono 1200 at 1 ohm) how much LESS current would it draw at 1200 watts than my A/B is drawing at 4 ohms bridged? the ED amp says 120 max current draw(i know i probobly wont draw the full ever) im just wondering cause i dont want to pull A LOT more for 400 more rms, so im just wondering it its worth it(not counting my jl 300/4 and cars draw).

diceman1000 · Post by **diceman1000** » Fri Dec 24, 2004 1:08 pm

try it...ifi you don't like it return it,or sell it for what you paid for it....someone on icixsound.com would gladly take it off of your hands...in fact icix would be the place to ask your question on the nine.1 as they have an actual eD forum there...Damon

Ryan from Ohio · Post by **Ryan from Ohio** » Fri Dec 24, 2004 1:34 pm

Whats 150? The upgraded alternator or the maximum current draw from the kicker amp?

You should keep what you got, but get your electrical system in order.

Dont forget to upgrade your wiring under the hood!!!

Post by **GlassWolf** » Fri Dec 24, 2004 2:27 pm

the FAQ section on amplifiers explains the efficiency differences.
a class AB amp is ~60% efficient.
a class D or T amp is ~80% efficient.

so, take the wattage, divide by 12, then take that sum and multiply it by 1.4 for a class AB or 1.2 for a class D or T amp.
that's about how many amperes of current the amp will need at full output, continuous.

6three6mafia6 · Post by **6three6mafia6** » Fri Dec 24, 2004 10:35 pm

thank you, and the 150 is gona be the amps my new HO alternator is gona put out.