Very nice ;) so you also own this other Grado flagship!
Is your pair the one with the blemish near it's edge?
as i said, i can't account for the differences in weight between the two headphones. maybe it is due to variations in the weight of the constituent components. 30 grams really isn't a lot of weight per se. wood does vary in density and weight regardless of the dimensions. maybe the heavier pair contained denser mahogany wood inner chambers. how do you know that there aren't variations in the density and weight of the foam pads? maybe there was more cable sitting on the scales for one of the measurements than the other. i really don't know and neither do you, but to claim that the differences in the finish of the metal cups and the weight of the two headphones is due to a change in the "recipe" for the alloy is just baseless speculation. why don't you approach grado for an explanation?
It's a 47.7 grams difference. I think it's a huge inconsistency and a lot of divergence between two pairs of the exact same headphone (model). The cables had to be rolled up and between the headband and the cups on the balance. The post contained a lot pictures and the whole thread was discussing about it, and the owner was being systematic in his descriptions. Yes it was in China, but they were taking the issue even more seriously than we do here... and just like us, they are also find Grado's QC for their flagship lacking, as in "wang quality fu control ming troubled, yei Grado, xhaoblabla" poorly translated by Google. The pairs didn't sounded the same either according to the owner, one seemed bass-heavier.
I'm juggling with my RS-1 right now, it weights next to nothing. What is the weight of just two standard mahogany inserts versus a denser one? 10 grams versus 12 grams, 20-25 grams? Not a 47.7 grams difference. Do you really expect two wooden inserts sets of different density to differ by more than 15x2 = 30 grams?
I'm 99% certain Grado foam never changed, or at least from 2009 to 2012. If their shape stood the same, their density also. Only around 2000 when the bowls were introduced did a paradox change might have occurred. They've been making foam pads (well, outsourced in China, so they're not manufacturing them) since 1989 and with consistency. If you own two Grados and that their pads feel different it's because a previous owner washed his with shampoo because he had comfort issue or for hygienic motives. Grado also knows how much the slightest discrepancy would affect their sound, as Grado sound and airiness-ness is strongly influenced by the pads (and probably foam quality).
The headband leather also changed a few times. But again, it's not a 10-15 grams difference, and I don't think the wood either, personally.
Edited by devouringone3 - 8/17/12 at 1:15am