bhjazz Posted February 29, 2012 Report Share Posted February 29, 2012 Quick question and likely an easy one, but it escapes me. If one were to have a power meter on the front of their amp, say, like the D'Agostino Momentum, what would it be connected to? I assume across the power supply...or would it be across the output? Thanks! Gratuitous picture for fun. Quote Link to comment Share on other sites More sharing options...
luvdunhill Posted February 29, 2012 Report Share Posted February 29, 2012 Check out the L'Amp articles on DIYA for the 'sweet spot meter'. Quote Link to comment Share on other sites More sharing options...
wink Posted February 29, 2012 Report Share Posted February 29, 2012 It would go between the positive out and the load. Need 2 for stereo. Quote Link to comment Share on other sites More sharing options...
luvdunhill Posted February 29, 2012 Report Share Posted February 29, 2012 It would go between the positive out and the load. Need 2 for stereo. I'm pretty sure this is incorrect. The meter is a bias meter in the pic, not a VU meter. Quote Link to comment Share on other sites More sharing options...
bhjazz Posted February 29, 2012 Author Report Share Posted February 29, 2012 (edited) The meter is a bias meter in the pic, not a VU meter. Ah. I'm getting it. Depends on what you want to show, then, right? Edit: Found the L'Amp Other Edit: The D'Agostino site makes it actually sound more like a VU: "...Despite its impressive output of 300 watts per channel into 8 ohms, the Momentum draws less than 1 watt of power at idle—or about one fifth of what a typical cell phone charger might require." I dunno! Edited February 29, 2012 by bhjazz Quote Link to comment Share on other sites More sharing options...
kevin gilmore Posted March 1, 2012 Report Share Posted March 1, 2012 (edited) Current d'agostino products are similar to the krell sustaned plateau bias stuff. So the meter is showing the amount of class A bias, as a cpu inside monitors the input signal and calculates the minimum amount of bias to maintain class A operation. At least until the thermal limits kick in. Real Vu meters are logarithmic, not linear. They would be hooked up directly to the output terminals. These days there are fancy ways of doing stuff like this with hall effect detectors on the outputs to measure real current, combine with the voltage, run it all into a cpu and calculate real power. Edited March 1, 2012 by kevin gilmore Quote Link to comment Share on other sites More sharing options...
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