OK, just tried to volume-match my Senn 579s and 1990s using pink noise. But in doing so realized thereās a complicating factor ā tuning. I have to EQ them both to the same tuning before using ear-based volume-matching to try to judge what volume knob settings are equivalent. That said, the Elex and 58X look to have a very similar FR.
Interesting. Do you know the output impedance of your tube amp?
I believe it is 4.5 Ohm.
IMO I feel the same, really most tube amps I have tried with focals have been misses for me, I just generally prefer what they do on a solid state
Cool, I thought it was just me. 
I know some like focals on a tube, but from my experience I really tend to prefer a similar tier solid state, I think it just better represents what focal was going for and the prominent aspects of their headphones
Try putting the same three numbers, such as 104, 80 and 100, into the top three green boxes in both the milliwatt and volt calculators at the bottom of the page here: http://www.apexhifi.com/specs.html. Hereās what I get:
I edited my above post, go check it out above
4.5 x 8 is certainly less than the Elexās 80 Ī©, so that shouldnāt be relevant.
Thanks! You may have been wrong, but apparently I was wronger. Your numbers jive with the Elex needing more juice than the 58X, and mine go the opposite way. Hope I can wrap my head around this formula. Iāve been using the on-line calculator I linked to. And apparently using it incorrectly.
I am going to fact check that formula just to be 100 percent sure, but at first glance it seems correct.
OK. Iām trying to do the formula. If only Algebra class wasnāt 60 years ago, lol.
It says divide the 80 ohms by 1000. That = 0.08. Then take the log10. That = -1.09691. Multiply by 10 = -10.9691. Finally, subtract that from the 104 dB/mW. My calculator says that = 115. Apparently, Iām supposed to actually add the -11 to the 104 because itās a negative number?
Yep it seems I missed the double negative, so youāre correct. And the mystery remains.
Darn! I was really hoping that 93 dB number was correct. It makes so much sense. IAC, thanks for indulging me on this wild goose chase!
Iāll be investigating that formula further. I want to know where that log function comes from. Again Wikipedia isnāt always the most reliable source.
I decided to finally mess around with EQ to try and tailor the sound more to my liking and running off of my topping D10 and Atom as reference, this is my result so far. (Iāve already put a lot of time into this, so it likely wonāt change much in the near future.)
I donāt exactly want to try and describe the sound difference but it does make them more enjoyable for me and my setup, but I have only done this EQ based off a handful of songs, so maybe Iāll run into a brick wall, but for now itās a welcome changed.
Did you do this by ear? If so, very impressive. Youāve nicely cancelled out the elevation followed by recession in the Elexās frequency response between 1K and 2.5K.
Iām guessing I did it all by ear, the only other thing I did was look at the graph provided on drop.
anyone that has these try out oratory1990 eq with peace apo. they bring out the senn 6xx/650 kind of sound these are capable of but while also being way better
I have not. Iāll try it out tomorrow and see if I like it. I already love the stock sound but Iām curious to see how itāll change it.
they dont change it too much but just refines it a bit. the low shelf filter helps with bass and the mid range tuning brings it a little more forward and adds some clarity
