[MIKELAP]

 

Check all the screws in the amp make sure they are tight nothing is  loosed,Clean the tube pins,Try swapping the RCA input cable(left to right/right to left) 

Done all. It was the tubes. The old ones 6n6p. Are dead quite. The ir had the issue. Maybe matching problem. Byt even after swapping the tubes the noise was from the right channel. That was strange

It was like ground issues due to some tube shorting or EMI maybe but i am not sure

Alot of the times its either a tube or just cleaning the pins 

 

[bharat2580]

I would like to know what all power tubes are direct fit and swap. for the ld mk iii
 
Thanks

 

[i luvmusic 2]

 

Check all the screws in the amp make sure they are tight nothing is  loosed,Clean the tube pins,Try swapping the RCA input cable(left to right/right to left) 

Done all. It was the tubes. The old ones 6n6p. Are dead quite. The ir had the issue. Maybe matching problem. Byt even after swapping the tubes the noise was from the right channel. That was strange

It was like ground issues due to some tube shorting or EMI maybe but i am not sure

So get a new one..............

 

[i luvmusic 2]

Even a bad solder and wire routing can contribute to humming. 

 

[i luvmusic 2]

I mentioned RCA input it could be from the source too.

 

[i luvmusic 2]

hey Mikelap,
  how did you removed the tube rings?
 
Thanks!

 

[MIKELAP]

  hey Mikelap,
  how did you removed the tube rings?
 
Thanks!

i ground them until i got to the screws without going right thru the ring not to damage case then bent them came right out screw on the left ring fell in amp so unscrewed the face and shook them out but be careful make shure you dont move around the wires soldered to the pot i had 3 of them come apart luckily 1 at a time so i could solder them back on what i did is unplug the little wire harness for the pot .Did same for right ring but screws did not fall in amp looks like  there resting on wires .Looks alot nicer with one less adapter to add.
   i might add that rings are available on ebay with the inside diameter big enough to clear 6SN7 o.d.                                http://www.ebay.com/itm/321137969163?_trksid=p2055119.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT                                       

 

[i luvmusic 2]

 

  hey Mikelap,
  how did you removed the tube rings?
 
Thanks!

i ground them until i got to the screws without going right thru the ring not to damage case then bent them came right out screw on the left ring fell in amp so unscrewed the face and shook them out but be careful make shure you dont move around the wires soldered to the pot i had 3 of them come apart luckily 1 at a time so i could solder them back on what i did is unplug the little wire harness for the pot .Did same for right ring but screws did not fall in amp looks like  there resting on wires .Looks alot nicer with one less adapter to add.
   i might add that rings are available on ebay with the inside diameter big enough to clear 6SN7 o.d.                                http://www.ebay.com/itm/321137969163?_trksid=p2055119.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT                                       

WOW! those rings are not so cheap maybe i should saved mine.

Anyway THANKS a lot!So grinding it is.

 

[bobbyblack]

Hi guys,

i buy it LD MK3 1 month ago with upgraded tubes Mullard M8100/CV4010 and i use this with SENNHEISER HD650 .The sound is v.nice but i feel i miss some of the high frecvency range so you can tell me some of the tubes with clear highs?Thx.in advance!

 

[i luvmusic 2]

First of all you will not get a lot of highs from the HD650 The highs on this Headphone is just enough not like the DT880 or Q701,You can try 6HM5 Yogu.
 
 
I must add that the HD650 sound thin with the MK III.

 

[Acapella11]

The presence on the MKIII is tuneable dependent on the choice of tube(s). The HD650 is a relatively dark but accurate hp, scaling with system upgrades very well. Besides driver tube rolling, I would suggest to upgrade your power tubes to either a pair of 6N6P-IR or 5687 with the respective adapters from ebay.

 

[ToTje]

  I would like to know what all power tubes are direct fit and swap. for the ld mk iii
 
Thanks

I was just reading the manual for other reasons, and saw this: 6N6, 6N6P, 6N6P-I, and 6H6n-N.  p6H30 is possible with circuit revision 2.0 and higher.
 
 
To open the Little Dot (to check the revision version, but also to access the jumpers easier), do you need to unscrew the 4 screws at the front panel?

 

[CJG888]

Hi guys,

i buy it LD MK3 1 month ago with upgraded tubes Mullard M8100/CV4010 and i use this with SENNHEISER HD650 .The sound is v.nice but i feel i miss some of the high frecvency range so you can tell me some of the tubes with clear highs?Thx.in advance!

Try the Voskhod driver tubes. They are not expensive, either...

 

[MIKELAP]

 

  I would like to know what all power tubes are direct fit and swap. for the ld mk iii
 
Thanks

I was just reading the manual for other reasons, and saw this: 6N6, 6N6P, 6N6P-I, and 6H6n-N.  p6H30 is possible with circuit revision 2.0 and higher.
 
 
To open the Little Dot (to check the revision version, but also to access the jumpers easier), do you need to unscrew the 4 screws at the front panel?

Just flip it over and look on the volume knob side of the amp in one of the peep holes with a flashlight towards the side of the amp like picture .Mine is a 2012 model and it has a revision 2.0 board   if its more recent i think its a revision 4.0                                                                                                                              

 

[ToTje]

  Just flip it over and look on the volume knob side of the amp in one of the peep holes with a flashlight towards the side of the amp like picture .Mine is a 2012 model and it has a revision 2.0 board   if its more recent i think its a revision 4.0                                                                                                                              

The searching took a while, but I found it: 4.0!

 Thx!
 
Still, for accessing the switches if I want to try different sorts of tubes in a possible future, I think it's easier to open it up, right?