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Post by puffin on Jan 17, 2010 14:05:17 GMT
Carried out Frans's mods. I was hoping that these would not change the sonic signature of the original. Pleased to say that it does not. It retains the clarity and sweetens the highs and alos seems to tighten the bass. Well worth it for a few quid. I made mine so that I can use it with more than one pair.   |
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Post by Deleted on Jan 17, 2010 15:30:31 GMT
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Post by Deleted on Jan 17, 2010 16:37:39 GMT
These cans look really nice Mick,
If you want them to have an even nicer look (and feel) wait till you have slapped on some AKG velours pads.
Gives it a high-class appearance (see pic with the Irish coin on it earlier in this tread)
Frans (Solderdude)
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Post by andy on Jan 17, 2010 16:38:39 GMT
ooooh they look great, add that bit of mass as well.
well done Mick
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Post by Deleted on Jan 17, 2010 19:33:40 GMT
Yes Andy, they were done to add mass, as Mikes 2p coin, seemed to give beneficial increase in SQ, these are the equivalent to 3x2p a side in mass, and im happy with the result.
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Post by puffin on Jan 17, 2010 20:31:48 GMT
I have been listening for some hours today with the filter attached, and I must say that these are exceptional performers for the money. They sound like a very much more expensive 'phone. Everything just seems right, and in the right proportions. Bass is extremely good.
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Post by andy on Jan 17, 2010 20:35:41 GMT
and 6 grams more than the 2 euro mod as well.
would it be easier to make the cap as a finished peice rather than add the plastic cap on as well?
would be quite nice with a brushed stainless cap.
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Post by Deleted on Jan 17, 2010 21:06:18 GMT
Not possible Andy, as with the original cap the hub fixing point is underneath but i think they look quiet nice without a cap at all, personal choice, and the extra work of making a brushed s/steel cap would give no SQ improvement, which defeats the object somewhat.
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Post by andy on Jan 17, 2010 21:45:17 GMT
Mick,
i think we are agreeing on cross ideas!
i was thinking of just your cap without the plastic superlux cap.
so just your turned part with a finished surface.
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Post by PinkFloyd on Jan 17, 2010 22:01:15 GMT
Mick, those MK2 rings look absolutely fantastic! As usual, your workmanship is second to none  Just out of interest, how do you make them? (ie: what's involved in the process?) With your skills you could start making "bespoke" modifications for "high end" 'phones.... the most obvious being Grado  What you have done with the HD-681 is first class..... I'm sure there are plenty of other 'phones you could work your magic on and I'm also sure there would be sufficient demand for your work to make it a viable proposition. Mike. |
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Post by andy on Jan 17, 2010 22:07:19 GMT
I agree Mick's work is top notch!!
Just fitting the rings he sent me at the moment, they fit perfectly!
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Post by PinkFloyd on Jan 17, 2010 22:33:37 GMT
Mick, i think we are agreeing on cross ideas! i was thinking of just your cap without the plastic superlux cap. so just your turned part with a finished surface. I agree..... Mick's work is such high class it seems a shame to finish it off with a snap on piece of plastic with "Superlux.tw" stamped on it ;D The Superlux name is CERTAINLY not a name to be ashamed of and the "stock" end cap serves a very good purpose as "stock" BUT........ with Mick's alu magic in place.... I'd like to see and end cap to match with, maybe, his signature on it..... a nice domed end cap with "HH" inscribed onto it (maybe?)....... "HH" being "HeliHarris" or maybe even "Headphone Heaven"  Whatever..... Mick has helped us take these 'phones from bargain basement to "desirable / must have / totally different from the norm territory / unique"..... I think it only right that the HD-681 HH "signature" should be born. The interest in the HD-681 here is incredible and the feedback from members who have listened to them is 98% positive.... I have never experienced such a following / appreciation for ANY pair of 'phones on ANY forum (worldwide)..... NO posts here are tampered with or deleted and NOBODY here has any financial interests in "Superlux".... what you see here is "as it is".... genuine feedback ..., the HD-681 has made itself known purely on merit...... superb! I don't want to keep repeating myself but...... £14.99 GBP? Bargain! |
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Post by Deleted on Jan 18, 2010 1:41:40 GMT
Hi Mike, dont agree at all, i think if there to be re-badged HD-681 RG would be more APPROPRIATE. You took a chance on these low cost Phones( they might well have been rubbish at that cost) and got the ball rolling, Frans filters, have moved them up another level, the Mk1 rings ok my idea,the extra mass on the end caps( trust me on this, they work great) your idea, and input from a lot of other RG members, has taken the 681`s to a level, that very favourably compares to the very best out there. A combined effort which, i think we have all enjoyed doing for the RG members benefit, so no more of this HH crap please.  In answer to your question regarding my work, I have a small Engineering Unit, with usual Machine shop facilities, Lathes. milling machines, grinding machines, drills etc, all manual (no CNC), employing just 3 of us, we do mostly Ministry of Defence prototype small batch work, which is mostly classified, and parts for a British company specialising in gas analytic equipment. I am semi- retired, but choose to remain hands on(at least in the Winter), so its no real problem for me to spend a day or so, making the parts for the 681`s which i have passed round to the members, in a manner which i try to make as fair as possible, this i will continue to do, as and when business and other commitments allow( Summer is now for relaxing, and a lot of that is spent flying, my other passion.) You have to realise, that i think you guy`s that put all those little electrical components together, Alex, Rick, yourself, and many others that are worth a mention, are just as skilled as me (probably more so) horses for courses, so they say! I enjoy what i do on here, so we will leave it at that. Good night or should i say good morning im off to bed now.  |
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Post by andy on Jan 18, 2010 11:24:15 GMT
A quick update on my HD681's
I have stripped them down, added the Solderdude filter mod as i was getting a ringing in my ears after listening to these cans.
I have also turned one of the speaker housings round so the little pannel that says 'do not remove' are in the same place on both ears.
I have replaced the cable with Mogami quad cable, split to each ear and using a Neutrik silver plated jack.
And last but not least i have glued Heliharris's alloy rings on as well.
First listen, well they are great, just like before but sound more presice, need to run them in for a while.
The midrange has been reduced slightly so that my ears dont ring any more after listening, but i now find that i am able to hear more information in that frequency range, it is as though the driver was being over run in the midrange before and was shouting instead of talking.
All in all, these now sound brilliant, good before but so much better after.
I have two pairs, one standard and one modified, the difference between the two is amazing, well worth spending twice the price i paid for the tweeks!!
Andy
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Post by puffin on Jan 18, 2010 13:44:03 GMT
The original end caps have a hole in them. Is this meant to control the sound? I wondered if the interface between the end cap and cover disc was a kind of loading?
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Post by Deleted on Jan 18, 2010 14:23:31 GMT
Done some tests with that puffin, before i settled on my final design, thought it might be a porting similar in theory to the Bass porting on some conventional speakers, soapy water test confirmed that there is no perceptible air movement through hole even when driven hard on the most bass heavy recordings i have. and a finger over the hole during listening test confirm this, certainly to my ears anyway.
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mrarroyo
Been here a while! 
Our man in Miami!
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Post by mrarroyo on Jan 18, 2010 14:25:08 GMT
... and a lot of that is spent flying, my other passion. ... I heard you have a new co-pilot!   |
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Post by Deleted on Jan 18, 2010 14:57:28 GMT
I WISH  Be straight up to 5280ft  and i would need Oxygen, even though under the 10000ft minimum pressurisation limit.  Nice to have you back, hope things are looking brighter for you. |
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toad
Been here a while!
I am the Super Toad, the Original Toad, the Whole Toad and nothing BUT the toad.... don't forget it!
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Post by toad on Jan 18, 2010 15:16:59 GMT
That looks seriously impressive. And Micks end caps look pretty good too |
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Post by puffin on Jan 18, 2010 16:13:49 GMT
Done some tests with that puffin, before i settled on my final design, thought it might be a porting similar in theory to the Bass porting on some conventional speakers, soapy water test confirmed that there is no perceptible air movement through hole even when driven hard on the most bass heavy recordings i have. and a finger over the hole during listening test confirm this, certainly to my ears anyway. OK, thanks. |
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Post by Deleted on Jan 18, 2010 19:47:56 GMT
Hi HD681 fans.
AKG velours earpads and filter parts have been ordered.
Takes a week for the parts to arrive at my place.
Everybody who has ordered pads or parts or boxed filters will be contacted in due time.
Frans (Solderdude)
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Will
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Ribena abuser!
Member since 2008
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Post by Will on Jan 19, 2010 9:49:11 GMT
....The midrange has been reduced slightly so that my ears dont ring any more after listening, but i now find that i am able to hear more information in that frequency range, it is as though the driver was being over run in the midrange before and was shouting instead of talking...Andy Interesting observation about your ears ringing, Andy. I was having another listen to the HD681 last night, and although It wasn't high volume, my ears were ringing afterwards. Good to know that the filter help sort that out. Does anybody else's ears ring after using un-modded 681's? |
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Post by covenant on Jan 19, 2010 10:35:41 GMT
....The midrange has been reduced slightly so that my ears dont ring any more after listening, but i now find that i am able to hear more information in that frequency range, it is as though the driver was being over run in the midrange before and was shouting instead of talking...Andy Interesting observation about your ears ringing, Andy. I was having another listen to the HD681 last night, and although It wasn't high volume, my ears were ringing afterwards. Good to know that the filter help sort that out. Does anybody else's ears ring after using un-modded 681's? I dont know about ring-more like bleed. Mine are very harsh in the high frequencies. I really hope the filter cures it. |
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Post by PinkFloyd on Jan 19, 2010 10:42:27 GMT
Does anybody else's ears ring after using un-modded 681's? Can't say they do Will but maybe I'm not listening as loud as you? What kind of volume level do you listen at? I listen between 10am and 11am |
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Post by derekrumble on Jan 19, 2010 10:52:16 GMT
....The midrange has been reduced slightly so that my ears dont ring any more after listening, but i now find that i am able to hear more information in that frequency range, it is as though the driver was being over run in the midrange before and was shouting instead of talking...Andy Interesting observation about your ears ringing, Andy. I was having another listen to the HD681 last night, and although It wasn't high volume, my ears were ringing afterwards. Good to know that the filter help sort that out. Does anybody else's ears ring after using un-modded 681's? No - not at all. Mine are a touch bright or crisp (call it what you will) but not 'ear-ringingly' hard. It's obvious that the 681s have a built-in loudness curve which means they sound best at modest levels. Maybe that's why they sound so good with lo-fi sources; the inevitably limited output of poorer quality sources in not therefore driven so hard perhaps. I sampled the two other pairs of 681s that I bought for my sons; they were the same - a bit bit crisp but not hard. How loudly are you playing your music guys? However, I will try Frans de Gruijter's filter (in external mode); I am interested in how effective this is after reading the praise for his circuit. Now that the HD 681 excitement and novelty has has worn off a bit I can enjoy my Grado SR60s again. Derek |
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Just out of interest, how do you make them? (ie: what's involved in the process?)
Whatever..... Mick has helped us take these 'phones from bargain basement to "desirable / must have / totally different from the norm territory / unique"..... I think it only right that the HD-681 HH "signature" should be born.
