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judo

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Posts posted by judo

  1. On 2015. 12. 11. at 2:46 AM, judo said:

    Then EMS has won. My costs will be higher then we are the VAT recorder in EU.:( How did you pay?  To EMS or to the custom office and when did you get the invoice about it ? One serious question remained how can I buy from somebody who does not contact with me. We will see. Thanks for the info.

     

    PJ was on a buseness trip why I did not get an answer. Ordered the phones.

     

    Got the phones in the minutes from PJ, I am not too happy because I wanted to buy the newest variation. Them got an SZ2 serial how can I decide it is a real SZ2 or not ?

     

  2. Then EMS has won. My costs will be higher then we are the VAT recorder in EU.:( How did you pay?  To EMS or to the custom office and when did you get the invoice about it ? One serious question remained how can I buy from somebody who does not contact with me. We will see. Thanks for the info.

     

    PJ was on a buseness trip why I did not get an answer. Ordered the phones.

     

     

  3. I hope so :) Thanks.

    5 minutes ago, purk said:

    Another vote for using EMS service from Japan.  They are cheaper and just as fast compared to UPS & FedEX international.  I never have to pay import tax on items shipping from Japan.  

    Are you from EU - here EMS cheaper ?

  4. Thanks! I do not get many answers lately maybe I question badly. I do not get answers from PriceJapan too after a day as they say on their site they do not speak english perhaps they can not write either. I was interested in the process for example how and when these postal services collect (or not collect, PriceJapan tells EMS does not ,I have to contact with customs) the VAT and duty in Europe, ... etc. That is good they are quick and you had got your headphones In Australia :)  I got a few hundred dollars worth something from Vietnam by FedEx they brought to my door and I did not have to pay anything plus.
     

  5.  

    I have been using a dynamite for about a decade. It is the first version with the 4 identical channels from the djgardner boards. It was built for the Akg k1000 and now I am using for the He6. The volume controller was a 24 steps stepped attenuator similar as Dact but cheaper. For a time it caused noise problems maybe the switch too that switched the single ended  and balanced inputs. Now I removed them because most source has volume control, the quality much improved :)I am thinking about I only need 4 steps to reduce the volume with for example 10,20, 30 dB depending on the headphone k1000,he6,he500 etc. So the question is some 4 pole 4 pos shorting (not crucial to be shorting,or mbp ) switch sealed as good relays is this exists ? Because they say an only software volume control maybe dangerous as for example the direct coupled amps :)  . (The same question about the 4pdt or 4 pole 2 pos input switch)

     

  6.  

    This i am much more inclined to do. I repair CRT's often, high voltage does not scare me.

    i did not realize changing bias means changing drivers. in that case these SR-X will continue to remain stock. i did not want to mod them at all but thinking about it more i can't see any other way a bias conversion would work.

    Is there a circuit people like to use for giving a pro-bias only amp like the 323 a normal bias output? this i would really love to have. i could hack something together if not but if it's been done then guidance can't hurt

    There is a schematic about a 323 on the diy thread from spritzer 9 May 2014. I do not know what is the secondary voltage but I think it is about the same as of the Blue Hawaii amp (from Kevin Gilmore) so I think that bias supply should work, the psu is similar. You can find this on the unfortunately not living but archived first best headphone site, Headwize http://web.archive.org/web/20150314232458/http://headwize.com/?page_id=751.

    I have a kgss with this psu and I want to make a  second bias supply too for I can change the bias independently in the two sockets. I have seen an srd7 and an srd7 mk2 (pro version) schematic here or on head-fi. I would see the sockets between the srd7 and the 323 are exchangable or not and I would make a pro bias for the srd7 perhaps.

  7. Is there any point in modding a SR-X MK3 to accept pro bias?

    I have a feeling maybe i should just get rid of my SRM-323S and get something that can drive normal bias'd Staxen too. I enjoy my whole current setup but a lot of times I think I need to get an EQ in my setup because all the treble is so piercing

    I am curious if it might just be my 323S. Man, I want some 007 or 009's, but I don't want to pay over $1k to offset all that harshness.

    What are you driving with your srd7 the sound may depend on the quality and the power of the amp? The cause of the sr-x modding is the original sr-x pro is very rare. To get pro driver is hard because the source for example the sr-gamma pro is rare too. And the diy game factor you can ruin everithing easily. The pro sr-x is better first in the bass but not only, but I never thought it will be my main rig. This is the Omega beleivers' thread and some of sr-009 converts' :) I only getting the itches now to try an sr-007 mk1 I have (cheaper) stax phones for two decades, then the sr-007 was cheaper too unfortunately.

    An other possibilites , If you are good in electronics you may build a normal bias circuit to your 323 but this must not be your first project because of the high voltage.

  8. The less dangerous is  cutting the stiches on the headband I think. Or remove one of the side plates (with the L or R on it) it is glued to the black block and then loosen the screws under it and you can pull out the pole I think but I never tried.

     

     

  9. I had a normal bias sr-x mk3 too for years not much used and I always thought I would buy a gamma pro and convert it to a pro. A few months ago I bought the gamma it was almost as new except the headband dyeing (as spritzer usually tells), but with a serious imbalance. I let the bias on for a night but it did not get better even worse so I set it aside I thought I would inspect the holes on the diaphragm later. After a few days I tried again and the imbalance was smaller than I remembered then it got worse again. I thought it is not the holes or the coating but some contact problem. So I took apart the left driver the diaphragm was intact and I think the cause was the bias contact on the metal ring of the diaphragm I bent it a bit and the gamma lived again. This is the first thing why I wanted to tell this sometimes it is so easy.  
    Then I had not the heart butchering this beautiful little gamma so set it aside again. Finally a few days ago I made the transplantation and the patient lives and sings so the ending is happy. Of course I have read all the posts about the transplantation on head-case and head-fi, googled a lot. I found the post from spritzer how "seal the baffle" with blue tack and it works the sr-x got better yet not only in the bass but at all.
    BUT !!! do not do this mod if you want to take apart your sr-x again because you can not. The blue tack is bloody strong maybe I used a bit more than needed. I almost ruined the headphones because I wanted to check something on the driver. This was the second thing I think it is worth telling.

     

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