Finding (calculating?) speaker and amp impedance

I'm starting to understand why speakers with high efficiency and perhaps more importantly a flat impedance curve work well with tube amps.

If not published by the vendor/manufacturer, is there a way to determine the impedance curve from the specs that are provided?

Also, I have a pair of Magnepans that need high current amplification.

Is there a way to determine the current of an amplifier from vendor/manufacturer provided specs?

Thanks everyone!

hleeid01-06-2023 4:35am

barts Details Discussions Posts This discussion Message User 685 posts 01-07-2023 at 02:55pm Copy Comment URL Report Comment Edit Delete @chocaholic I have a Sansui AU-20000 that will not come out of protection mode. I've been told it is essentially a boat anchor. Used it for many years and really liked it, put it in a closet when the ARC amps appeared out of nowhere (wink). Would you please share the repair shop who did your 717. Thanks. Regards, barts
barts Details Discussions Posts This discussion Message User 685 posts 01-07-2023 at 03:40pm Copy Comment URL Report Comment Edit Delete @chocaholic Thanks. I married a good one also. Music lover and doesn't give a hoot about $$ spent on audio. In fact, she hears things and complains to me "that is not right!". Regards, barts
barts Details Discussions Posts This discussion Message User 685 posts 01-07-2023 at 03:26pm Copy Comment URL Report Comment Edit Delete @chocaholic Thanks...Mississippi is quite a drive for me, so that is out, but I am slightly confused due to you saying the 717 "it's in transit as I type this". Does this gentleman sometimes ship and sometimes not? Regards, barts