Sennheiser HD 660S2 thread
Mar 22, 2023 at 2:51 PM Post #2,656 of 6,736
On the Sennheiser Hearing homepage, they talk about a polymer blend membrane in the HD560S driver. No more two layers of different material. On layer formed out of a new created blend.
Maybe we could get a NDH-30 for cheap with the HD560S....
I guess it depends on exactly what the word ‘blend’ means in this case. It’s going to be a transition of course, but I wonder what the original actually meant? It could mean two layers blended together, or it could mean one layer, but then why use the word blend?
One thing I’m pretty certain of though is that the HD560S will not sound like the NDH 30, any more than the HD660S sounded like the HD700.

In the end though nothing matters except the final result of course, interesting though the details are.
 
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Mar 22, 2023 at 2:54 PM Post #2,657 of 6,736
Yes...but not for another headphone...lol.

The Bryston BHA-1 did such a nice job on the S2 figured I would see how Sennheiser's own would do on the 2nd station over the little SMSL HO100.

Heard the HDVD800 amp section is quite similar to the current HDV820.we will see hear.

But 1st the HD800S. :)

Oh yes, I’d forgotten you were going to get that! Let us know how it fares compared to the Bryston!
 
Mar 22, 2023 at 3:17 PM Post #2,658 of 6,736
Oh, if you select your thermoplastic material carefully it can surpass metal or wood in regards of acustical performance. Remember the membrane is also only made from thermoplastic.
Do you know if I can wash a driver from outside? I mean what appears in the picture below? Is this called membrane? Is this what you call thermoplastic? Thank you.

20230218_111350.jpg
 
Mar 22, 2023 at 3:24 PM Post #2,659 of 6,736
When I asked @ericpalonen for my HD-580 Precision (on a long-term loan to a cousin), he suggested the HD-600 drivers as the closest/best thing to be found.
There 3 capsules available in UK

1) system 300R for HD600 and all version of HD580 before.
2) system 300R for HD650

Both of them what I call KDH580 according to the info posted above. He suggested that to you because this is what official sennheiser uses as a replacement for HD600 and models before.

3) 150R for 660s.

What I call sys40 according to the same info.

The 58X do not have spare drivers as it is a Drop product so out of guarantee driver bust means you need to put other models drivers. Someone posted that sennheiser (or drop) recommended him 150R replacement capsules but I am not sure why since clearly this is not the exact driver used in 58x.

If it goes bust now I will put a HD600 driver since I have both 6XX and 660s but if I buy also the HD600 and the driver fails later I do not know what to choose since clearly the s2 driver will be much more expensive.
 
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Mar 22, 2023 at 3:29 PM Post #2,660 of 6,736
There 3 capsules available in UK

1) system 300R for HD600 and all version of HD580 before.
2) system 300R for HD650

Both of them what I call KDH580 according to the info posted above. He suggested that to you because this is what official sennheiser uses as a replacement for HD600 and models before.

3) 150R for 660s.

What I call sys40 according to the same info.

The 58X do not have spare drivers as it is a Drop product so out of guarantee driver bust means you need to put other models drivers. Someone posted that sennheiser (or drop) recommended him 150R replacement capsules but I am not sure why since clearly this is not the exact driver used in 58x.

If it goes bust now I will put HD600 driver since I have both 6XX and 660s but if I buy also the HD600 and the driver fails later I do not know what to choose.
I’ve never actually had a failed driver in any headphone.
 
Mar 22, 2023 at 3:38 PM Post #2,663 of 6,736
Yes I know but did you see the picture of my driver. Is something like a rust or kind of burned in the membrane I do not know. Does not give me a lot of Confidence. The other one is in pristine order. Looks completely like new. Super shiny.
Could be just a bit of dust. You could try wiping it very gently with a cotton bud and plain water. But be careful not to press!
 
Mar 22, 2023 at 4:02 PM Post #2,666 of 6,736
I hope so because i do not want to loose that headphone. I paid 164£ few years ago now I need around 250£ to replace it
You ought to feel lucky. Feel sad for the folks who bought Utopia used and now need to fork out $2k to replace the drivers. :face_palm:
 
Mar 22, 2023 at 4:21 PM Post #2,669 of 6,736
God dam* it, guys. Been away for one day and I come back to see that you've fallen off the wagon HARD. :)
And with all this driver talk I'm now curious as to what went into the HD630???

"With the HD 630VB, launched in 2015, Sennheiser introduces its first closed audiophile headphone model. .......... Specifically developed for the HD 630VB, Sennheiser’s proprietary high-performance transducer is the “heart” of this model. It delivers the power for an intense bass experience which can be customized"

Obviously was influential on those "other" headphones and possible the S2?
 

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