Update: Just wanted to put this up near the top that these measurements are for the 3.0 revision.

Wow! Where did the bass go!

That's a good question. They weren't too far off from the Paradox when I had those. Paradox had more in the 100Hz-300Hz range but very close other than that. That was before I got the alpha pads, though. I hope something is not wrong with them or got damaged during shipping. I could be very wrong but I thought they would measure better in the bass based on what I've heard and every other measurement for them.

I forgot to mention, purrin, that the V-moda cable I sent with that is messed up and sometimes needs to be wiggled and bent to work right. Not sure if you used that one or not. Might also be the T50RP jack itself.

And yes, these are with the alpha pads.

The Paradox & the Mad-Dogs that I heard at the LA meet both had bass presence. The Mad-Dogs @ that LA meet IMO had even more bass than the Paradox... Now seems it's gone! Maybe it's broken.

Dan did say mids would be more audible tho http://www.head-fi.org/t/613576/mad-dog-by-mrspeakers-modified-fostex-t50rp-review/4995#post_9334580

Obviously it seems kind a hard to predict what one is going to get here.

The Paradox & the Mad-Dogs that I heard at the LA meet both had bass presence. The Mad-Dogs @ that LA meet IMO had even more bass than the Paradox... Now seems it's gone! Maybe it's broken.

Dan did say mids would be more audible tho http://www.head-fi.org/t/613576/mad-dog-by-mrspeakers-modified-fostex-t50rp-review/4995#post_9334580

Obviously it seems kind a hard to predict what one is going to get here.

In theory, you would think they wouldn't be quite this light in the bass. But this very well could be accurate! I will have to double check when I get them back.

Thanks for the measurements, purrin! Very interesting regardless. The HD is about what I expected. Wonder how they compare to the Paradox and stock T50RP, because I don't think there are HD measurements of those on here.

That's interesting. This version would be more in line with subjective impressions at the Austin meet where folks said the MD's were all mids (Maxvla, twiosp or MorbidToaster, correct me if I'm wrong here).

I agree with ultrabike though. At the LA meet the Mad Dogs were boomier (more mid-bass) than the Paradox. I don't think these were the Alpha pads though, but rather the Dog Pads (??). It's really hard to keep track of all of the changes. I'm sure MrSpeakers is doing right by his customers by offering upgrades as he makes them, but it must be kinda frustrating to have to keep an eye out for any revisions as they come. It was part of the problem when I was modding the T50RP's -- they were never "finished" and I'd always feel the need to tinker with them to get them better. You'd think if someone offered a product commercially, that it'd be "finished".

I have noticed though that when someone has one that measures badly, or doesn't like them, Dan's explanation is that the headphones were from a bad batch that somehow made it into the wild, or from a previous revision that has since been changed. That explanation is convenient the first time, but after a while starts elicit skepticism.