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About swing_girl

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    Hong Kong
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  1. Thanks for sharing Brazzy. It is such a heavy amp, it is hard my me to lug it to the service center via public transport on my own. I am going to replace the 12AX7s and see if that helps. I like the amp because of the Class A chime ... I use a HD500X too (with a JTV) and I like the versatility, I hope the tube replacement can fix the problem.
  2. I have the same problem, one day the amp worked, the next there is no sound. The amp has not moved or anything, just switched off properly (standby off then a minute later, main power off). There was no issue before the problem, everything lights up as it should, fuses are fine, tubes are securely attached, not loose. The amp has only been used a few times at home since purchase so the tubes are still quite new.
  3. You are right, I live right next to the sea. I am not a technical person who knows about tubes and schematics; I will find someone more knowledgeable to do it if the hiss returns. Thanks :) :) :)
  4. The hiss was very loud in both modes and also across all 4 amp types before I re-seat the pre amp tubes. Like I said, I may have bent some of the pins but I am happy that hiss is almost all gone and the drop in volume is hard to measure, it is not very significant but it seems to be there only.
  5. I think you are probably right; I could have bent a pin when I re-seat the tubes. The tone is still good and I am happy that loud white noise style hiss is mostly gone.
  6. egkor, I have no idea why removing and inserting the same tubes got rid of the hiss, the tubes were not loose when I removed them. The tone is still there so I am happy that most of the hiss is gone; even if the trade off is a little bit of volume loss. I play with clean tones a lot so the hiss was really annoying. I am in HK and there are two big music shop chains, they both have no stock of any 12AX7, or other tubes for that matter. I am not going to touch the power tubes, they have a metal cage around them and I know nothing about re-biasing tubes. Thanks again for advice :-)
  7. Egkor, Thanks for your reply. I put the tubes back in and they are secure. The volume loss is a feeling I have but since I have not measured the volume level pre and post tampering the tubes, I have no idea how much is really lost. However, I am very happy with the hiss much lowered. :-)
  8. Thanks. I could not find any replacement tubes in music shops here; I removed the 12AX7s and plugged them in again, the hiss is mostly gone. However, I feel that the volume seems to have dropped, could it be that I did not check whether the pins went into the same socket as before?
  9. Hi Bribrew, I found your post while searching for solutions to DT50 combo amp hiss. I would like to know if replacing the tubes just a process of unplug and plug in? Do I need to do anything like biasing the tubes? because I do not know how to do this. Thank you for any advice.
  10. I prefer a short cable as I play with the pod in front of me. How much is a 8 feet cable plus shipping to Hong Kong? Thanks.
  11. This is exactly how I feel. I hope there will be an update that deal with the Semi and the Spank positions 2/4 soon. For the time being, I am going to change the semi pickups to the Lester pickups later to see if I can get closer to that 335 sound.
  12. Ater using the HD upgrades for a couple weeks now, I am generally very happy with the improvements in sound. However, I do find that the Semi models lack the mid-range punch of a semi-hollow guitar like the 335. I do not remember how the earlier firmware sounded like but I do not recall not liking the models before. I feel that now the bridge pickup version of the Semi sounds better than the neck pickup. FYI, I am using same amps before and after the HD upgrade. Anyone has similar observation?
  13. I am primarily a jazz player so the hollowbody models are useful for me. Before the HD upgrade, I could not use the Super 400 model at all as it was too bassy and percussive and totally unlike an archtop jazz guitar. With the new update, I can get a workable sound from it and I am very happy about it. Still, both jazzbox models lack the woody sound from a hollow body.
  14. I have a JTV59, I would like to have an option of using roundwound or flatwound strings for the jazzboxes as well as a L5CES model. Another wish is a nice nylon string guitar with very little ambiance. Another wish would be to have more choices of bodies / pickups in the workbench, like a semi hollow telecaster or soapbar pickups.
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