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Post by psych0 on Jan 11, 2018 14:27:57 GMT
I think it's best to wait for measurements. Frans will surely compare stock pleather and velour pads since they have quite a significant impact on the sound. You could try to get 681EVO replacements pads, they seem more firm compared to the ones that came with the headphones. Not sure, might just be wear and tear. I have no issue with the fit of the HD688...small ears for the win And yes, velour is much better for me also, mostly because of the glasses. I guess you can solve the depth issue with new pads and maybe a spacer disk under the pads...maybe 5mm thick. Not sure if it would work, just an idea.
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Post by superluc on Jan 11, 2018 14:51:56 GMT
I think it's best to wait for measurements. Frans will surely compare stock pleather and velour pads since they have quite a significant impact on the sound. You could try to get 681EVO replacements pads, they seem more firm compared to the ones that came with the headphones. Not sure, might just be wear and tear. I have no issue with the fit of the HD688...small ears for the win And yes, velour is much better for me also, mostly because of the glasses. I guess you can solve the depth issue with new pads and maybe a spacer disk under the pads...maybe 5mm thick. Not sure if it would work, just an idea. Thanks but, as i have said i have already try them with my 681 Evo's velour. The spacer could be an idea, i did not think about it, and also i don't know how to make it This problem was very unexpected to me, who knew it that the 681 Evo have more inner depth. Anyway, the difference in depth between Evo's pads and HM5 is one cm, a lot if the temporary ones i have ordered are not too soft.
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voa
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Post by voa on Jan 11, 2018 15:12:12 GMT
I doesn't mean soundstage but the sound itself. Sounds in nature maybe except low frequencies are more coherent, they have shape to it while monitoring style headphones sounds often over detailed, because the shape of the sound is much wider. It's fat. They are good for monitoring tracks, as you can catch small nuances and flaws like sibilance more easily. They are also pretty good to listening music, but I found myself quite often analyzing music, rather than just listening. When sound has more refined shape it's more easy to catch melody and that's why I perceive Superlux toys as less musical. For soundstage image less messy presentation will result in cleaner picture and instruments will be better separated. Better for music and games but I also enjoy Superlux exaggeration or presentation of the sound. "This type of paper tape can do the same kind of seal of that paper-veil over the holes ?" That medical tape look similar and you should be perfectly fine with it. It has glue on it so it will block sound a little more but I doubt that you will hear any audible differences as sound will go trough other holes. It is more about pressure. With completely opened hole bass will be significantly weaker and will look like spilled milk, and with completely closed it will be more compact, solid, tight. Most likely you will hear bigger difference by uncovering lets say 5-10% of that hole.
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Post by superluc on Jan 11, 2018 15:28:09 GMT
I have take some measurements with a caliper, for clear any doubts. The difference is less then i was thinking, nearly 1mm in the center vs the 681 Evo without the felt, and on par with the border, but the clamping force of the 688 is much much higher, so it may have take away some other mm, from the pads. I have already try to bend them a lot, but it's always not enough. EDIT: better leave them be, or i'll destroy those rods I don't know if the pair of yours doing this as well, but mine touching themselves, on the pads.
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Post by miiksu on Jan 11, 2018 16:16:59 GMT
Thanks for the info guys, will try to get the XL version when it's available on amazon. Who knows when... As i can't used them longer with Evo's pads without hurt, for lack of depth, for starting i have decide to wait and order some cheap, not original nor XL, HM5 pads, that need to be stretched, and see in the wait solderdude's test and solutions. If then i upgrade to XL, it's either velour or hybrid, as i'm not a leather guy. I would personally not to use velours because they lower bass too much to compared pleather or genuinen leather. I don't have problem using glasses with Brainwavz XL sheepskin ear pads. But if u really want velour u should go for hybrid, not that agressively for the bass. I have take some measurements with a caliper, for clear any doubts. The difference is less then i was thinking, nearly 1mm in the center vs the 681 Evo without the felt, and on par with the border, but the clamping force of the 688 is much much higher, so it may have take away some other mm, from the pads. I have already try to bend them a lot, but it's always not enough. I bended on my stomach Cups go side of ur ribs. Om quite thin guy...
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solderdude
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Post by solderdude on Jan 11, 2018 16:35:06 GMT
Wow..... these sound VERY different from the prototype. These production models sound poor ! Got Tinnitus from 1 minute already. Bass quality is poor. Not at all integrated into the mids.
I hope they did not change the driver that much. Certainly not worth the E60.- as they are now.
Let's see if I can free up some time to mod them and write a mail of disappointment to Superlux.
WT... ?
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Post by miiksu on Jan 11, 2018 16:40:07 GMT
Wow..... these sound VERY different from the prototype. These production models sound poor ! Got Tinnitus from 1 minute already. Bass quality is poor. Not at all integrated into the mids. I hope they did not change the driver that much. Certainly not worth the E60.- as they are now. Let's see if I can free up some time to mod them and write a mail of disappointment to Superlux. WT... ? One of the holes on the driver panel was fully open. It seemed different than of ur photos.
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Post by superluc on Jan 11, 2018 16:50:07 GMT
I bended on my stomach Cups go side of ur ribs. Om quite thin guy... Don't bitching. It's my problem, not yours. It's not my fault if a difference of some mm hurt my ears. I have complain only for let that know that it may be a problem for some others, but we also already talked about the solutions. solderdude: there is an hole leave open on the right side of the driver
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Post by miiksu on Jan 11, 2018 17:01:21 GMT
I bended on my stomach Cups go side of ur ribs. Om quite thin guy... Don't bitching. It's my problem, not yours. It's not my fault if a difference of some mm hurt my ears. I have complain only for let that know that it may be a problem for some others, but we also already talked about the solutions. Hmm. Yeah people have different sized heads and that damping force is bad. But I was just trying to help. Maybe I should have said it differenlly.
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Post by superluc on Jan 11, 2018 17:11:53 GMT
That's ok. I know that the rods can be bent more, i'm just a bit afraid of broke something, thinking also to the bad soldering the Evo's have on them.
I sincerely hope that solderdude's disappointment depends entirely from that hole.
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solderdude
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Post by solderdude on Jan 11, 2018 17:20:43 GMT
The driver also has different damping, closer to that of the prototype HD687.
Will do some measurements and exploratory experiments over the coming days.
Quite certain it is a combination of pads, the hole and changes to the driver itself. All not resulting in improved response.
None of the original modifications are valid any more !
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Post by superluc on Jan 11, 2018 17:25:06 GMT
The driver also has different damping, closer to that of the prototype HD687. Will do some measurements and exploratory experiments over the coming days. Quite certain it is a combination of pads, the hole and changes to the driver itself. All not resulting in improved response. Damn... they sure have listen to you
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Post by psych0 on Jan 11, 2018 17:58:51 GMT
Disappointing initial impression Frans, i hope you can work your magic and fix it. Hopefully the driver itself is not that different from the proto.
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solderdude
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Post by solderdude on Jan 11, 2018 18:15:59 GMT
Quite different.... quick measurements. HD688 proto with HD681 velours padsstock HD688 productionstock HD688 with port (hole) closedLook at terrible response around 3kHz. The prototype was lovely there, this one has a severe dip there which with various mods/pads I tried I could not make smaller. Seems like a driver issue alas. Maybe when I mod the driver itself closer to that of the prototype but think it may be a different membrane that is used. I hope not. Very disappointing. Superlux was soooo close yet manage to bodge it up. Yes, bass response is a bit more linear and rolled off in subbass but the upper mids have suffered immensly.
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Post by superluc on Jan 11, 2018 18:24:20 GMT
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