TTea and I have discussed a GB, but i was uncertain of the demand. If there is interest, we can pull one together. I can start a sheet if there is interest.
Yes! They do...very heavy solvent/varnish smell. Nice little units though.
As far as R13/14 my voltage is a little higher than suggested so I plan to cascade the jfets and use source resistors on them. According to the 6moons article Nelson indicates no audible difference in sound for the sake of stability.
buzz if you do a spreadsheet add in the Primrose colum for 2x18V @ 300-400.
I am sure some will take the opportunity.
These will be nice transformers. A little shielding around the outside would not hurt with the exposed signal transformers here.
Getting the small transformers seems to be more difficult, and the most request I get to do. I am not interested in full package exposure. I dont think that helps our diyaudio micro-economics or whatever.
Other parts I am no expert on.
Dale CMF55, PRP and TX2575 I have all tried and liked. The sound of the transformer and FETs dominates the tone. So for a kit, my vote would be for CMF55 I guess. Dont take that too far. Still got that varnish smell in my head.
I am sure some will take the opportunity.
These will be nice transformers. A little shielding around the outside would not hurt with the exposed signal transformers here.
Getting the small transformers seems to be more difficult, and the most request I get to do. I am not interested in full package exposure. I dont think that helps our diyaudio micro-economics or whatever.
Other parts I am no expert on.
Dale CMF55, PRP and TX2575 I have all tried and liked. The sound of the transformer and FETs dominates the tone. So for a kit, my vote would be for CMF55 I guess. Dont take that too far. Still got that varnish smell in my head.
Buzz,
I would be interested in transformers too.
To those in the US experiencing bad weather - stay safe!
I would be interested in transformers too.
To those in the US experiencing bad weather - stay safe!
Fudge...
R2 and R11 on one channel let out the smoke. I tried another set of jfets to no avail...not sure where to look next...
R2 and R11 on one channel let out the smoke. I tried another set of jfets to no avail...not sure where to look next...
Nope oddly enough its r2 18 ohm and r11 10 ohm.
Using irfp240 as well...not semi south.
Bias pots were set to min
Using irfp240 as well...not semi south.
Bias pots were set to min
Couple other thoughts. Make sure the LEDs are mounted correctly.
The positive anode is the small circle, the cathode side is larger square pad.
This may be backwards of some designs.
Also, I would not mount any outputs at first.
Only time I had a short was when I did not have all appropriate pins soldered on the daugter card male pins, or the female pins on the main board. I bring up slow with a variac, so did not smoke anything.
The positive anode is the small circle, the cathode side is larger square pad.
This may be backwards of some designs.
Also, I would not mount any outputs at first.
Only time I had a short was when I did not have all appropriate pins soldered on the daugter card male pins, or the female pins on the main board. I bring up slow with a variac, so did not smoke anything.
I switched xformers and now only have the bad channel powered. Same thing smoke from r2 and r11 so I suspect the xformers are hooked up correctly.
I still suspect the front end jfets... I have genuine 170s but the j74s are suspect.
I still suspect the front end jfets... I have genuine 170s but the j74s are suspect.
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