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Post by hirsch2k on Jan 10, 2018 8:18:55 GMT
I'll know in a week or so. Will wait for those measurements, since the production version changed quite a lot imho. They at least got rid of the bass peak. I might be able to take photos of the cups inside and outside this afternoon. I think those cans have a lot of potential and if they already got rid of a few downsides that solderdude adressed in his excellent mod it is less work for us
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Post by miiksu on Jan 10, 2018 9:31:28 GMT
Also these need better ear pads like Brainwavz XL sheepskins, fits like a glove And I was so damn suprised of sound stage / details. I did not expect to be this good. Angled or normal ? Those HM5 pads don't press too much each other on the lower part, if mounted on the 688 and leave them somewhere ? Are you using a stand for them ? If possible, i may be interested to see a pair of HM5 pads tested, because, after more use, i feel the ear space here much more problematic than in the 681 Evo. In the 688 the driver's shield is too close and protrusive, while in the stock 681 Evo it was in the rear, covered by the felt and obviously the pad's disk. Even taking away the felt and adding toilet paper, like i have do on mine pair of Evo, only the circle that previously hold the felt may tickle sometimes, at least on my ears, and the overall pressure is a lot less. But it's a mod, so it's mine fault if there is some contraindication in doing that. But here, and thinking about the awful fit on stock condition... Normal ones and no stand yet. Probably going to buy cheap Chinese. Im on phone so sorry quoted everything.
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Post by superluc on Jan 10, 2018 13:10:08 GMT
Thanks. Oh well... it's a shame that the construction's engineering it's even worst thought than previous models, but with modding we can do it. The audio qualities of the driver deserve it. It's just that i wasn't expecting to have even this problem on them, and thinking about the fact that different pads affect the balance, well... the project goes a bit in a more personal way to find the balance wanted, and the budget is affected as well. Anyway, Superlux need to seriously rethink about what they want to do in the future, on the headphone's segment. We have choose to gave them a possibility with this headphone, but it's obviously that they can't go higher in price with something so cheaply constructed. Unless they want to produce and sell 681 and 668b until the end of time. A lot of audio enthusiast may say the same things of voa, build-wise, and see Superlux's headphone not as an audio bargain but more like plastic crap putted around a good driver. How deny that ? On the Evo's the headband may broke mostly because of the short height adjustment possibility, the internal soldering between the external male jack and headphone is bad, with so tiny wires, and it's the reason of those microphonics, the ear space on the 688 is ridiculous ( at least to me ) and solderdude find the one in the 671's prototype even worst. Seriously... why not have at least one top of the range model, with good build quality ?
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Post by miiksu on Jan 10, 2018 16:23:04 GMT
Thanks. Oh well... it's a shame that the construction's engineering it's even worst thought than previous models, but with modding we can do it. The audio qualities of the driver deserve it. It's just that i wasn't expecting to have even this problem on them, and thinking about the fact that different pads affect the balance, well... the project goes a bit in a more personal way to find the balance wanted, and the budget is affected as well. Anyway, Superlux need to seriously rethink about what they want to do in the future, on the headphone's segment. We have choose to gave them a possibility with this headphone, but it's obviously that they can't go higher in price with something so cheaply constructed. Unless they want to produce and sell 681 and 668b until the end of time. A lot of audio enthusiast may say the same things of voa , build-wise, and see Superlux's headphone not as an audio bargain but more like plastic crap putted around a good driver. How deny that ? On the Evo's the headband may broke mostly because of the short height adjustment possibility, the internal soldering between the external male jack and headphone is bad, with so tiny wires, and it's the reason of those microphonics, the ear space on the 688 is ridiculous ( at least to me ) and solderdude find the one in the 671's prototype even worst. Seriously... why not have at least one top of the range model, with good build quality ? I want to see some measurements of that microphonic noise first before I start to solder better wiring. Previous models had bad, messy and tiny space to solder better wires.
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Post by superluc on Jan 10, 2018 16:54:45 GMT
The 681 Evo is like this, near the short cable: 3 very tiny wires, left channel on the red wire coming from the internal, right channel on the free rod, ground on the rod where is the white wire.
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Post by miiksu on Jan 10, 2018 18:40:46 GMT
The 681 Evo is like this, near the short cable: 3 very tiny wires, left channel on the red wire coming from the internal, right channel on the free rod, ground on the rod where is the white wire. Yeh, it's bad. I own HD681EVO. My worst Superlux purchase. I'm gonna open this baby right now. Gonna use soft clay to damper the cups. Mm, I have 8 different colors I think I'm gonna use that cute rose pink Edit. Mod done. Bass is more balanced, low bass so good Slightly less bass but it's now on right place. Approx 8.33 grams to each cup of soft clay. Cups still resonating but not that bad. I would not add more without testing / measuring first. I don't have testing equipment so I'm quite blind modder Edit2. Added some pictures with the Brainwavz XL sheepskin ear pads
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Post by runtcrab on Jan 10, 2018 23:35:04 GMT
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Post by superluc on Jan 10, 2018 23:53:04 GMT
Added some pictures with the Brainwavz XL sheepskin ear pads Look good, even if the silver circle is disappeared How much you have pay those pads ?
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Post by superluc on Jan 11, 2018 0:02:01 GMT
Yes, they fit. Pads for Superlux Evo, AKG K240, Shure SRH-940 and Brainwavz HM5 fit also the 688. If you feel that there is not enough space between the ears and the driver, go with the Brainwavz.
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Post by psych0 on Jan 11, 2018 7:14:28 GMT
I want to get the Brainwavz velour pads - but which one? the regular or the XL version. Would both fit and the XL version would have more space?
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Post by miiksu on Jan 11, 2018 9:45:26 GMT
Added some pictures with the Brainwavz XL sheepskin ear pads Look good, even if the silver circle is disappeared How much you have pay those pads ? If I recall correctly it was something like 45€. I had to pay taxes so price was bit high. I want to get the Brainwavz velour pads - but which one? the regular or the XL version. Would both fit and the XL version would have more space? Get XL. Regular does not fit well.
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Post by superluc on Jan 11, 2018 12:03:51 GMT
Look good, even if the silver circle is disappeared How much you have pay those pads ? If I recall correctly it was something like 45€. I had to pay taxes so price was bit high. Wow, only the best for your babies
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Post by superluc on Jan 11, 2018 12:15:35 GMT
I want to get the Brainwavz velour pads - but which one? the regular or the XL version. Would both fit and the XL version would have more space? The Evo's pads are 105x105, 60 the inner, in between those two. 2 cm vs 3, in deepness. The regular may just be too small, even if you can stretch and fit them.
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Post by psych0 on Jan 11, 2018 13:05:38 GMT
Thanks for the info guys, will try to get the XL version when it's available on amazon.
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Post by superluc on Jan 11, 2018 13:40:41 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.
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