Hello everyone,
I have been reading this thread and getting a lot of useful info. I am currently trying to build a speaker/headphones switch from quad 405 speaker output. Speakers are Celestion 66, 4 to 8 ohm.
I would like to power my Hifiman HE400i (2016 edition, planar) which have the following specs:
Impedance : 45 ohm
Max power rating : 2W
Max voltage: 9V
Efficiency : 93dB/mW , 106dB/V
The only thing I'm not sure is the value of the resistors needed for my circuit. How to calculate for this particular pair of headphones?
Thanks !!
W