Originally Posted by IS300IAdeathRow
Actually running strapped isnt always more efficient. Strapping tends to create more imp rise for some reason. Example i used to run a single Crescendo bc2000d at .5ohm....clamped a solid 1900+rms and some change rising to 1.6ohm at 13v. I decided i was going to try strapping another one and strap at 2ohm (each amp seeing 1ohm) and clamped again to see the power difference thinking i was going to essentially double it....and boy was i wrong. Rising to 3.8ohm still dropping to 13v i clamped a solid 2800rms.....yep a whole 800-900watts difference. So i was actually more efficient with one amp bc i only gained tenths maybe a decibel increase on the meter.
I wonder if it has to do with the fact that each amp is only (pretend) 70% efficient on it's own, and (I assume) the multiplication of amplifiers compounds the efficiency ratings.
So say the amp is 70% efficient, but when the signal meets the second amp, you're effectively taking 70% of the first amp's 70% which then equates to 49% efficiency.
I would imagine that having two amps powering each VC independently would be like having two 70% efficient events happening simultaneously, but independently, which results in an overall efficiency of 70% vs. 49%
Drunk thinking / math. Thoughts?
EDIT: Check the math...
Your 1900 wrms amp strapped with another 1900 wrms amp created 2800 wrms.
1900 x .49 = 931.
931 + 1900 = 2831wrms which is almost exactly what you clamped.
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