Discussion in 'Headphone Measurements' started by purr1n, Sep 27, 2015.
Needs more pilcrow.
Can someone provide a link for Jupiter audio research ? I'd like to bookmark it for later use !
He doesn't have a link as of yet. There is an unofficial loaner going on (here & at head-fi) or he's ext1 on head fi
( https://www.head-fi.org/members/ext1.460358/ )
I finally went through the trouble of modding my 6xx (KISS mod but rear foam removed, love me that midbass bump). It's been awhile since I heard the JAR mod, but I feel like I did a decent job of replicating the benefits I noticed in the JAR mod, but with a slightly more relaxed presentation (since I kept the front foam stock, not sure if I want to coin mod) and more presence in the midbass. Even though @Hands measured an increase in the midbass for the JAR mod, I really didn't find it as noticeable as I do in my DIY mod (probably because there was so much treble to counterbalance it or the JAR mod runs its dampening closer to the rear vent).
I hope that the KISS mod instructions could be updated to have a note about the spacing of the magnet dampening strips and how crucial their spacing to each other as well as to the vent affects midbass response as well as channel balance; I definitely winged it at first and one driver's strips were mm closer together than the other and it noticeably affected the channel balance in the midbass.
Purchased HD650 from @EagleWings. Sounds different to me. I've owned the original (circa 2003) HD650 and the update. Kept the update as a reference, though I've never been able to figure out the serial number. It is taped up on the outside of the box (seems to be 317529xxxx). And neither my eyes nor my iPhone can seem to focus on the number inside the cup:
Here's the thing. I tried to also take pictures of the just-purchased HD650:
I could change the camera angle, but there's no serial on either cup. Serial is only on the box (346680xxxx). Versus all my other HD650, it's bright!
I've heard this pair back to back against my then stock 6xx and @EagleWings and I both noticed the same thing. Not sure how or why they would change it versus the 6xx; my only thought was that it wasn't broken in long enough and the pads are much newer which also affects the sound.
Frankenheiser lives! It is back with more mpingo then before . While I'm waiting for an upgrade to my Mad Scientist Carbon Fiber Auteur cables...decided to juice up Frankie's one more time. You know that means there must be another improvement somewhere. Sure enuff! Mpingo ebony puck madness. Looks kind a like a drone...lol! Yup even bigger improvement hanging them off the bottom. Yeah it's kind of tribal! Etc. But oh my. Increased detail more ambiance and harmonic and tonal gradations are more pronounced. Speaking of voices...they are more intelligible. Just plain more alive and involving! Dynamics small and Large also a bit better!
Even Happier Listening!
Revamped the upper ones location and mounting. More improvement!
I'm about 93% sure that says: 3175 292219
EDIT: After rotating and sharpening a bit with an image editor I got the code to scan with my phone. It confirms 3175292219.
Is that a very normal looking fabric or paper around the driver instead of the usual silvery threads? Or is that just something about the camera angle or lighting? It seems to me if they've really changed that it would definitely have a pretty significant impact on the sound... I have no clue what the silvery stuff is, but I would assume they did a lot of research to come up with it versus a plain ordinary tissue type material.
Maybe it's just the lighting, but somehow I'd swear the plastic seems cheaper too (it seems cut better, but it looks softer and less dense.) Does it affect the bass?
Bass is similar, though I'm not particular about bass. I don't listen to a lot of music with hard-hitting bass. So as long as it doesn't "rumble", distort, or bloat too terribly badly, I'm not going to notice. Did not hear a bass difference. I will take a closer look at the material.
Silver material did look significantly different to my eyes. Does it age?
I could be completely wrong about the plastic even. It just seems that way from the picture. But that could be the lighting. It may be they're still using the exact same plastic really. Unless you want to cut each fairly deeply to see if it really is softer or not it's hard to say how to really tell other than a general feel that I don't even know how to explain. It would affect sound and perhaps more than just the bass, but the bass would be the most notable (much more distortion on a less dense plastic I imagine.)
If it does it doesn't age like that. Unless it's the camera it's even making it look like the alignment of the material is different (it seems to vary by section there as if the material was applied separately to each section instead of being one contiguous material glued down.) It really looks to me like that's a very normal paper or cloth compared to whatever Sennheiser has been using (something nylon based? I have no clue...) Probably weaker and softer (careful not to poke holes in it,) but, more importantly, this might be the key reason it seems brighter.
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