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jose

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Posts posted by jose

  1. krell ksa5 klone

    in Do It Yourself

    Posted

    Hi Remolon.

     

    Thanks for your offer. In this moment I´m waiting for a good box for my Krell. When I finish it, I will send you a MP.  ::)  ::)

     

    It's different EMO. You're speaking about of a highly evolved Dynalo (your current development) and the Krell is disadvantaged. Under the same conditions, SE input/output, single PSU, etc.. Does dynalo is superior?

     

    My advice is If you can get one, don´t hesitate. ;)

  5. KG Balanced Dynahi build discussion thread

    in Do It Yourself

    Posted

    Thanks Dr. Gilmore. It´s only on a channel and I can hear it if I use a headphone sensitive.

     

    I get lucky because I bought some THAT340 (around 20 units). I've been changing one by one until I found one that does not make noise but I discarded 10 for this reason   ???  ???

     

    I believed that the THAT340 had a better quality ???

  9. KG Balanced Dynahi build discussion thread

    in Do It Yourself

    Posted

    Hello guys.

     

    Thanks for your replies.

      

    Dr. Gilmore, I never use IEM´s so I haven´t got any problem, but I´m thinking about a new match.

     

    Nopants yes. I have a KSA 5 Klone and the original use a XLR male conector for the output. I used a 4 male pin conector for the output (more or less similar to original).I want to use only a connector for my HD6X0 headphones. I know it´s not correct but I have a cap for this conection in case I don´t use it.

     

    Well, I´m not good describing the sound of my amps (and my natural language is Spanish) but I really like the dynahi sound. In this moment I prefer the Dynahi sound to Beta22. It´s very clear and powerful, on this point is similar to my Beta but the great difference is that the Dynahi have a detail, a note... what really, it make it very different.

     

    A PSU picture. I use two Sigma22 and two 160VA toroid

     

    20140210_190802.jpg

     

     

  11. KG Balanced Dynahi build discussion thread

    in Do It Yourself

    Posted

    Two week burning the amp.

     

    I took new dates.

     

    L channel

     

    BIAS ~ 0,750 mVolt.  

    Offset ~ 2 mVolt (Without servo)

     

    R channel

     

    Bias ~ 0,750 mVolt.

    Offset ~70 mVolt (Without servo)

     

    I've tried down the offset of the Right channel but I can´t. This channel always has a hard drifting. If I regulate the + channel to 0 volt, the - channel drifting to 150/-150 mVolt. If I tried the other cannel down to 0 volt, I have the same result.

     

    What can be causing this problem? ??? ???  

  18. KG Balanced Dynahi build discussion thread

    in Do It Yourself

    Posted

    Dr. Gilmore  

     

    You are right. For an error I mistook the cap. value for 0,2uF :mikey2:  :mikey2:

     

    Now my Dynahj is flying     :indra:

     

     

    are you sure those are 2pf caps, not 2uf caps. because that would definitely kill all the gain.

     

    edit: yep 2uf would take the gain down to about -50db at 1khz.

     

     

     

     

     

     

     

     

    I wish you a happy new year.

  20. KG Balanced Dynahi build discussion thread

    in Do It Yourself

    Posted

    with a THAT340 input i wouldnt be surprised to see dc offset

     

    next time bent the resistors with the value facing up!

     

    ::)  ::)  ok, Thanks Justin, the next time.

     

     I checked the boards but the resistors values are correct wiht this:

     

    d.jpg

     

    I only changed the cap. for 1000 uF/35 volt

     

     

    Yes, I had problem with the offset but I could solve with patience... and a matl whisky.

     

    Thanks

  22. KG Balanced Dynahi build discussion thread

    in Do It Yourself

    Posted

    Thanks Dr. Gilmore. Sorry, I forgot give you the settup of my amp.

     

    My Dynahi used two Sigma 22 with two toroids (160VA each one). The output volt. is 29,5 Volt DC.

     

    I followed the Ti Kan´s guide for settup. The Bias is 0,75 Volt, the working temp is arround 70º centigrades. I had problems with the offset setting but now it´s controled.

     

    I´ve used my DAC with balanced output and I checked some Input configuration:

     

    Balanced input with SE output (I used the O+ and PSU ground)
    SE input with I- to ground with SE output

     

    With those options the sound is very poor and the volume is "minimal" but with balanced input I believe that the test is a bit best. I use for dummy test an old AKG.
     

    If you need more info, photos or other check/test, I can post in this thread
     

     

    Thanks  

     

    Edit for error, sorry

  23. KG Balanced Dynahi build discussion thread

    in Do It Yourself

    Posted

    Hello everyone.

     

    It´s my first post here and I need a bit help, if it´s possible of course.

     

    I have got a Balanced Dynahi (Tran´s boards, using the THAT340). I just finish the amp and set-up but I have a problem with the output:

     

    I´m using a SE input with Input- to ground and output-  floating. The sound is very poor and the volumen is little. With balanced input and the output- floating, the result it´s the same, poor sound and little volume. In this time, I haven´t volume pot.

     

    Have the same problem?

     

    Thanks

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