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Does my amp have enough juice to power my speakers?

Having just read a review in Stereophile of my Audio Physic Step Plus speakers (which I have to my utter dismay ,knocked over and dinged AAAgh!), the author states that his Shindo Haut-Briton Power amp (20wpc) couldn't drive the Step Plusses and states that nothing less than 35Wpc could drive them.  My dilemma is that I have a Line Magnetic 216 IA rated at 22Wpc that sometimes sounds heavenly and on other days sounds eeh.  Do I need an amp with more boost?  

udog

Showing 2 responses by georgehifi

georgehifi's avatar
georgehifi
10,312 posts
 
Sorry in my last post, the link I posted could be the wrong one, and this could be the right one of the impedance/phase angle curve of the Audio Physic Step, much harder to drive.
 https://www.stereophile.com/images/96APS-fig1.jpg

Cheers George
georgehifi's avatar
georgehifi
10,312 posts
 
udog
Having just read a review in Stereophile of my Audio Physic Step Plus speakers. The author states that his Shindo Haut-Briton Power amp (20wpc) couldn’t drive the Step

I believe it, a 20w tube amp, and knowing Japanese probably very low feedback.

Audio Physic Step having been tested at only 84db efficient, and with an impedance/phase curve (linked)
The one in the Stereophile review I believe "y" axis maybe a misprint.

This must be another one they did, and could be the right one.
3ohms from 150hz to 400hz and then 5ohms with -45 negative phase angle.
https://www.stereophile.com/images/119APStepfig1.jpg

Cheers George
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