As long as you are aware that that does decrease the feedback a bit, so performance might suffer a bit (on paper - pretty sure the difference isn't audible).
Seems to be a fair bit of Scandinavians here. 🙂
If you want lower gain, you have to remove R141, heating both ends with 2 solder ions and roll it away or one ion cover R141 with solder and "roll" it away
I've done it a few times but I always end up with R141 in place, with some preamps (passive and some buffers) it sounds less dynamic without
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According to the last comments a jumper is a bad idea (I have not studied the NC400 layout).
Joe: I actually Icelandic, but live in Norway.
One thing to remember is that R141 is part of the feedback loop, so a large jumper, forming an antenna, might not be the best thing in such a sensitive position.
As to having gain lowered by removing R141, somewhere early on in this thread Bruno actually comments that by lowering the gain you increase the feedback, so it probably results in slightly increased performance (but we are again talking about levels that only matter on paper).
I see. Iceland, as you would know, was part of Denmark until 1945 when it got its independance. But, we are still cousins. 🙂
As usual, the truth is much more complex than that, but I suggest we stick to discussing hypex ncores.
I was backwards. Shorting removes gain, opening is infinite gain.
My apologies, and that is why peer review is a good thing.
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Even at 50 posts per page this thread is 198 pages, with - I'd guess - about 10-15% content and 85-90% arguing/banter (including this post). Shame.
Sometimes a bit of levity can be a good thing. As Einstein's favourite sparing partner once said: "Some things are so serious you can only joke about them."
But how does that feel subjectively? We all know measurements don't tell the whole truth. 🙂
Its not entirely been covered from what I saw. The SMPS1200 indeed has the negative HV bus output, but it is a volt or so lower than required by the NC400 to not use its onboard regulator. If there was a way to mod an SMPS1200 so this voltage could be increased to 16V or higher then the lower idle dissipation benefit would match the SMPS600. I haven't saw an explanation from Hypex as to why this is the case, however its probably to do with the SMPS1200A400 originally intended for use with the UcD modules.
It is. Its a much cheaper design compared to the SMPS1200. If they were using brand name caps like United Chemicon, Rubycon, etc instead of junk like Samwha I'd be more inclined to think the retail price is more acceptable. But it is what it is, the company exists to make money, using huge markups. It's like bashing Apple for doing the same thing with their ridiculous markups.
That said I prefer the SMPS1200 with its superior heatsink design...
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