is it me or the waterfall plots are not looking so hot? i have idea how to tell. i didn't really mod, mod them really. i have them recabled with 18awg silver/copper wiring and terminated to 4-pin XLR. the enclosure inside is empty cause i didn't have replacement foam to go inside when i cleaned them and just used speaker cloth over the driver to protect it. my mind is blown though like the sextett results. did you try hooking them up to speaker outputs to test correct polarity cause when i wired them i accidentally made the silver wire the positive and copper negative. i think i remember getting more warm sound from them and less clarity when i ran them out of phase. can't conform it since i haven't used them for months.

i appreciate it though you going out your way to measure these. much appreciated!

yea, they woven stitched baffles. my DF's though has no dampening inside really cause i realized when i went to rewire them the foam inside rotted away. i know the driver is different and lighter than the sextetts. also smaller than the sextetts from my observation when i took my older sextetts LP apart and looked at the the size and weight compared to the DF's. thing is it's weird. i liked my DF's and sextetts way more than my K601's and kinda used my DF's to help tune my fostex. also curious,where's the FR graph?

The foam isn't really damping (though it probably has some very subtle effect) it is simply mechanical to give them nice feel in the adjustment so the cups don't just hit plastic when they swivel, they have a springy feel.  Not going to change measurements much I don't think.

yea. your right. i was just mention there is nothing in there since i had to clean them out. i was gonna wait to rewire them before but when i checked inside to see how they were wired cause i was curious to see if they used the same 4-core wiring as the sextetts since emailing  AKG was no help the wires became loose so i was like 'what the heck'' and rewired them then. they were bare wired till i bought a 4-pin XLR jack for them recently before sending them out. i did notice once though when i tried cotton as a replacement for the foam it made them more congested sounding for some reason.

EDIT: also wonder if tried with 240 foam disc that was in my fostex? i didn't have spares at the time so i used speaker cloths instead to protect the drivers in the df and i know at least the foam discs in front of the driver made most of the difference and prevented it sounding too bright. i don't know though, maybe it's just me.

awesome! lucky you didn't hear my sextetts lp then if you thought the df's had some brightness the them . my LP's no matter what always sounded much brighter compared to any other akg i ever heard and can be annoying on lot of modern recordings.

I'm still looking for an AKG K240 DF, they seem really great headphones, hard to find though!