I did a quick search on the internet & found an ad on Canuckaudio for a YBA Passion 600 for sale. It seems that this amp uses a 1KVA power transformer & is a 150W/ch into 8 ohms.
From my calculations, assuming a dual secondary i.e. it's a stereo power amp, max current from the power transformer is 14A per channel.
From Ralph's calculations it seems that the amp's output stage is configured to deliver such less than the max available (which is a good thing in that there seems to be some engineering margin in the power transformer).
Of course, impedance of the speaker is not constant i.e. varies with frequency. Plus, the impedance is capacitive & inductive over freq meaning that the amp will have to supply more current (into a reactive load) than what Ralph calculated (hence his comment of "if that is the impedance of the speaker").
These 2 calculations should give you a pretty good pix of what the amp is capable of & what its current delivery limitations are.
From my calculations, assuming a dual secondary i.e. it's a stereo power amp, max current from the power transformer is 14A per channel.
From Ralph's calculations it seems that the amp's output stage is configured to deliver such less than the max available (which is a good thing in that there seems to be some engineering margin in the power transformer).
Of course, impedance of the speaker is not constant i.e. varies with frequency. Plus, the impedance is capacitive & inductive over freq meaning that the amp will have to supply more current (into a reactive load) than what Ralph calculated (hence his comment of "if that is the impedance of the speaker").
These 2 calculations should give you a pretty good pix of what the amp is capable of & what its current delivery limitations are.