GK-1: Right channel dead - Page 2 - diyAudio
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Old 21st September 2011, 09:34 AM   #11
Jens A. is offline Jens A.  Denmark
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Hugh and I are still working on this. I measure things, and Hugh diagnoses ;-)

It may turn out to be a dried out solder joint that causes the problem - we'll see!

Cheers,

Jens
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Old 26th September 2011, 12:30 PM   #12
Jens A. is offline Jens A.  Denmark
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Getting there! After mutual deliberations/measurements, it was decided to replace T1/T2. And lo - suddenly the right channel LED lit up again, indication power is flowing as it should.

Now I just need to replace the R2s with wire links, then I am ready to test with music!

Many thanks to Hugh for immense patience and kind words so far ;-)

Cheers,

Jens
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Old 27th September 2011, 10:25 AM   #13
AKSA is offline AKSA  Australia
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Jens,

A veritable pleasure... we made a good team!

Now, who here would be interested in an even better GK1, perhaps the GK2?

It would, however, be supplied as a fully working analog module, you fit it to a box etc....

I have been working on this on and off for years, and now, after the third strike, I've actually produced something which sounds almost supernatural, it is extraordinary.

Cheers,

Hugh
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Old 27th September 2011, 10:33 AM   #14
unmibh is offline unmibh  Bosnia and Herzegovina
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Hi Hugh,

Is this the same GK-2 we have discuss before?

Regards.
Rom
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Old 27th September 2011, 12:12 PM   #15
Jens A. is offline Jens A.  Denmark
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Quote:
Originally Posted by AKSA View Post
Jens,

A veritable pleasure... we made a good team!

Now, who here would be interested in an even better GK1, perhaps the GK2?

It would, however, be supplied as a fully working analog module, you fit it to a box etc....

I have been working on this on and off for years, and now, after the third strike, I've actually produced something which sounds almost supernatural, it is extraordinary.

Cheers,

Hugh
Count me in!

Cheers,

Jens
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Old 27th September 2011, 12:38 PM   #16
AKSA is offline AKSA  Australia
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Thanks Jens, very encouraging!

Rom,

It's different again!!

Front end is similar to our discussion, but output stage is very close to the original GK1, since it works so incredibly well. I have done the board so it fits right into the GK1 position; mount holes the same etc. Board is 200mm x 80mm, compared to the original GK1 which was 265mm long. Still uses two trafos, and exactly the same input board and remote control.

Ciao,

Hugh
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Old 27th September 2011, 02:01 PM   #17
Jens A. is offline Jens A.  Denmark
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... and the same tubes?

Cheers,

Jens
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Old 28th September 2011, 01:54 AM   #18
AKSA is offline AKSA  Australia
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Yes, Jens,

coupled directly this time - no cap on the grid.

Hugh
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Old 28th September 2011, 08:00 AM   #19
Jens A. is offline Jens A.  Denmark
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Yes, Jens,

coupled directly this time - no cap on the grid.

Hugh
Very good! Then I suppose I can re-use my beloved gold-pin 6922s?

Any idea about pricing for a finished board yet?

Cheers,

Jens
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Old 28th September 2011, 11:28 AM   #20
AKSA is offline AKSA  Australia
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No, nothing on pricing yet, Jens, but yes, the gold pin will be fine and dandy - it's designed for both the 6ES8 and the 6922, just as was the GK1.

But because of the topology, it sounds a whole lot better. This is magic, I can't quite figure it out myself, but it's the result of much trial and error and almost ten years of on and off trials.

Hugh
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