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Originally Posted by fjrabon /img/forum/go_quote.gif
This kind of annoys me, not you in particular, but I see "Creative Aurvana = d1001" all the time and its just not true. I've tried both. They have the same drivers and that's it. The cups and earpads and the amaount of clamp are actually fairly different. These make up for a noticeably different sound. So if you're saying that the cups on the aurvana need to be stuffed to "fix" them and then extrapolating that the cups on the D1001, which are different, need to be stuffed, that's totally invalid. I could almost see saying something about the drivers, like saying that your CAL's drivers are slow and then equivocating that with the D1001, but you're equivocating something about the cups, which aren't the same.
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Firstly, you've got it backwards. People say that the AH-D1001 benefits from "markl-type mods" and extrapolate that the CAL! should (and does) too. See this thread:
http://www.head-fi.org/forums/f4/mar...-d1000-350167/
Aside from that, just how different are they?
From the pictures, the cup shape and volume look very similar. The pads look identical.
Has anyone done a detailed, side-by-side comparison? With photos?
I've got a CAL! here and i've got pictures of a disassembled D1001, and it looks like, at the very most, the D1001 may have slightly less curvature to the cup.
The CAL! looks bigger on the outside because it has that silver ring portion and is all shiny where the D1001 is dull and has a single-piece cup, but i'd wager that if you sealed both cups and filled them with water, they'd be within a teaspoon of each other.
Looking at pictures of the inside of the cup is particularly revealing - these really are 99.999% the same thing on the inside, from everything i can see.
Even if the D1001 cups were 10% smaller, which they're not, the driver isn't just slightly underdamped - it's profoundly underdamped, and this difference would mean that while the CAL! bass is embarrassingly bad, the D1001 bas by comparison would be merely pretty bad.
I'm almost willing to mail my CAL! to another supremus with good feedback and a D1001 for detailed cup volume analysis. As for cup materials, I think you will find that they are the same.