Fitz if it's all right with you I will now quote your K240 info, because it is very good info! If you don't want it quoted let me know and I can remove it but I don't see why you would want that
I asked fitz this:
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Originally Posted by 003
My third and possibly most important question regarding the sextetts. In this post, you said that you discovered even more variations of the sextett other than the radiator color. And in your profile, you have three different sextett versions listed; early, middle and late production.
The question is this: How many versions of the sextett are you aware of that differ sonically, and what are the sonic differences? Also, how would you rate each version in order from best to worst? Oh-- and how do you tell each version apart?
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And he responded with this:
Quote:
Originally Posted by Fitz
There are three that I have found to differ sonically. The early one using the early driver and early (orange) radiators, which I have found the least to my liking. Then the middle ones using the early driver and later (white) radiators. And finally the late ones using the later driver and later radiators. I have only listened to the later model one for a short time, and haven't put back together either pair I got, but my initial impressions were such that I think it may be the best (I was originally going to repair and give them to friends, until I noticed how good they sounded and took them apart to find the different driver). Because of how much the parts are mixed, it is difficult for me to come up with a way to tell the middle and late production versions apart. Some are obvious by using all early or all later parts, but most are mixed up. The earliest one is easy to tell, because it always has the headband with holes (and a better quality one too), the non-flat grille, orange radiators, more glossy plastic, "AKG" is written in silver inside a black box on the badge, and has a different kind of cord. Some of the middle production have these features, but I have not seen one with all of them together. It is a shame, because it has the best looking and best quality parts, but sounds the worst of the original K240 series (unless you like the sound of bass boost on max, sometimes it is fun, but not all the time). My friend who has no problems with bass heavy phones described it as "overwhelming", but still "very controlled".
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As of now, you can be fairly positive you have the early version if you have orange radiators. If they are white, the only way to differentiate 100% between the middle and late production version is by looking at the back of the driver, and to do that you must remove the back of the earcup. I do not yet know what the differences on the back of the driver are. Fitz needs to fill in that gap with information and hopefully pictures!
HOWEVER, I have a hunch on an easier way to tell the mid and late production sextetts apart. But I have no firm data to back it up... Fitz would have to confirm this. If you'll notice in
this post, in the picture comparison of the early production vs. either mid or late production, the white radiators have an orange circle around them. Now if you look at
a picture of the radiators on my sextetts, you will notice there are no orange circles. I have a sneaking suspicion that one of these is the middle production sextett and one the late production. Now, I could be wrong, and I do not know which is which, but at least it's something. If I had to guess which was which, I would say it is probably more likely the one with the orange circles is the mid production because the early production uses all orange. Anyway hope this post help you all out and I hope Fitz can come give definite answers!