[Group Buy for KG's Boards (2nd)]

Hi

 

I´m looking a set of KGSSHV boads. Please, if someone has boards...

 

Thanks

[KG Balanced Dynahi build discussion thread]

Hello

 

It´s balanced input and unbalanced output.

[KG Balanced Dynahi build discussion thread]

New dates:

 

1Khz, 1 Volt Rms to input

 

Out put: 17,138 Volt Rms

 

 

Thanks

[KG Balanced Dynahi build discussion thread]

Dr. Gilmore  

 

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

 

Now my Dynahj is flying    

 

 

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.

[KG Balanced Dynahi build discussion thread]

Thanks Dr. Gilmore

 

I will check the cap. tomorrow. I suppose that it´s the correct value but...

 

Sincerely, I will prefer a simple error on the caps code.

 

We buy a big lot of Mospec and after "match", they are working fine on the Krell, but I will take note...

 

Thanks

[KG Balanced Dynahi build discussion thread]

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:

 

 

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

[KG Balanced Dynahi build discussion thread]

Hello

 

I made a test with help of Torpedo and Picaudio (Thank you guys).

 

I'm sending a calibrate signal from my PC and DAC (1Khz and 1 volt) to I+.

 

On the O+  I just check 0,0791 volt.

 

If I send the I- to ground, I check 0,0500 volt.

 

I would like post photos of my work.

 

 

 

 

Thanks 

[KG Balanced Dynahi build discussion thread]

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

[KG Balanced Dynahi build discussion thread]

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