basically that's why people mod them (T50RP's), to still have a mid-centric headphone without resonance.

Nope... not why I mod them, mine are not bass, mid or highs centric either, they need to be modded to become that way.
IMO this can only be done properly with a measurement rig, not by ear alone.

NP. I didn't think the first measurements made much sense. I redid them a few times. The only thing I would suspect is the pads needed a day to un-squish from while they were in the box. This would seriously affect bass - and this bass is much stronger today (at least subjectively).

OK. New measurements are up now. I think giving the pads time to fluff up provided a better seal. I actually don't hear the MD's as bass lite anymore. It definitely sounded off yesterday when I got them out of the box.

Those look better! Thanks! The 200Hz-1KHz hump is interesting. I'll have to listen more closely for that when I get them back, though feel free to take your time with them, Marv. Dan reported that the alpha pads raised the 200Hz-5KHz spectrum by 2-5dB (greater increase the higher up you go, mostly). Now I'm really curious how the older pads would have measured on your setup! The response might actually measure smoother up to 5KHz or so on your setup with the old pads but with a darker tilt, if I had to guess. But, eh, that's OK. Not worth the hassle. For anyone curious, here's the comparison measurements Dan posted: https://www.mrspeakers.com/image/data/mrspeakers/LCD2_DP_AP.png (Blue = alpha pads, Red = old dog pads, Green = LCD2)

It does sound like there's a bit of variability across Mad Dogs of the same revision, so mine might measure better, worse, or the same as a "perfect" unit. That's always something to consider. I'm sure Luis has his headphones more closely matched due to the time he spends on each one.

I actually like a slightly darker than pure neutral sound (they're both good to my ears), and it appears as though these have a dark/neutral-ish tilt. The lowered treble works well for my ears, though I have noticed that peak around 10KHz. It's interesting, but not unexpected, to see it primarily in just one channel though. Seems common for the T50RP.

The one thing I really like about the alpha pads is their comfort and fit, though I eventually plan on making my own suspension headband for it. Dan's comfort band just doesn't cut it for me. I've been lazy and just stick old earpads between it and the top of my head when listening, haha. I do get a better seal with the alpha pads than the older pads, and whether or not they measure better than the old pads, I do prefer how they sound.

Ultimately, I did prefer the Paradox when I had it. I still found the Mad Dogs with the older dog pads to be brighter or thinner sounding than the Paradox, though. I'm still trying to figure out exactly what it is about their frequency responses that make that difference for me. Either way, I was able to get the Mad Dogs refurbished for around $260, and I got the alpha pads for free because Dan wanted me to beta test them for some reason. Not really sure what his reasoning was behind that, but I can't complain! Overall I'm very satisfied with them for the price.

I'm also curious if distortion changed at all, but it's fine if you didn't redo those measurements. Thanks again! 

OK. New measurements are up now. I think giving the pads time to fluff up provided a better seal. I actually don't hear the MD's as bass lite anymore. It definitely sounded off yesterday when I got them out of the box.

You know, I have always said on HF that I always take a bit of time to "get used" to the sound of the Mad Dogs because quite frankly they can sound underwhelming at first. Usually I hear them as all mids and a bit of bass but then after a while I "warm" up to it. Maybe it has to do with the pads, not sure, but it has always been this way for me.

Anyway, pleasant headphones to listen to all day. Thanks for the measurements!