I asked this question on the Crown forums and it was (understandably) removed with no further explanation (it just dissapeared!).
Here's the thing, the XLS1002 amp is rated at 350W/ch-700W total (Harmon doesn't specify RMS, Peak, or whatever).
The back panel, where you plug in the power, says: 50/60 Hz 175 Watts.
Now I know the line voltage is rated in RMS and if i extrapolate the current (I=P/E) I get:
175/120 = 1.45A, all day long.
Further, class D or not, DriveCore or not, it's been my experience over several decades that it is not possible to get more power out than what goes in, regardless of efficiency claims.
In this case, it looks like: 700W/175W = 4 x 100 = 400% advertised efficiency.
Am I just too old-school to understand new output power ratings? Is it now possible for a 9 pound amp to deliver 700 Watts with only 175 Watts of input?
Maybe electronics have indeed just passed me by after all these years.
Thanks for looking,
Tony
Here's the thing, the XLS1002 amp is rated at 350W/ch-700W total (Harmon doesn't specify RMS, Peak, or whatever).
The back panel, where you plug in the power, says: 50/60 Hz 175 Watts.
Now I know the line voltage is rated in RMS and if i extrapolate the current (I=P/E) I get:
175/120 = 1.45A, all day long.
Further, class D or not, DriveCore or not, it's been my experience over several decades that it is not possible to get more power out than what goes in, regardless of efficiency claims.
In this case, it looks like: 700W/175W = 4 x 100 = 400% advertised efficiency.
Am I just too old-school to understand new output power ratings? Is it now possible for a 9 pound amp to deliver 700 Watts with only 175 Watts of input?
Maybe electronics have indeed just passed me by after all these years.
Thanks for looking,
Tony