Jeff, this would be a very convenient option! I will send you my diptrace files.
Thanks. I've noticed a bit of offset happening in the Slewmasters with the dual rows of outputs when running at higher rail voltage for a few hours. The top row runs hotter. Ostripper noticed it too. Feedback was able to correct it, but it's not ideal. This one would likely do the same.
Yes, this is a good point - on a vertical heatsink, the higher - the hotter. So, for these 2-rows designs, the ideal heatsink orientation is the ribs-up, on the "roof" of the compartment.
I'm building a pair of monoblock Slewmasters with the boards standing vertically with the outputs mounted close to the bottom of the heatsink. This seems to work well too. I'm using a Wolverine input on it. I've noticed quite a difference in high frequency detail difference from the Vertical.
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It must be an optical illusion. I used the heatsinks you linked. They just looked taller to me in your pictures. I haven't done anything with mine since I found I had fake transistors. I'm still trying to get myself to invest in more Sankens. I already drilled and tapped the heatsinks for those so I don't really want to change to TO3P devices if I don't have too.
Blessings, Terry
Newark has the Sankens in stock and on sale. There's a problem with their search engine though. 03C3670 and 03C3692. They still come with thermal pads from Newark. Digikey is shipping them without pads now.
The Wolverine is on an integrated Slewmaster output board I put together for a subwoofer plate amp. I was really surprised how much different it sounded. I'm curious how it compares to the Kypton-ND now.
Hi folks, this circuit sounds certainly very well.
But, I see nothing in DC2-Sch-01.pdf that could make OPS non switching.
Maybe I have missed nothing ?
Stéphane
But, I see nothing in DC2-Sch-01.pdf that could make OPS non switching.
Maybe I have missed nothing ?
Stéphane
I like the Vertical with NS-OPS much better. I need to make some more comparisons with more of the Slewmaster and Valery's input and output combinations. I have a feeling the Vertical and the Kypton-ND are going to be very similar sounding.
Hi Stephane,
The one we discuss now is showed in the post #408:
http://www.diyaudio.com/forums/soli...e-old-ideas-1970s-ips-ops-41.html#post4578177
The one in the 1-st post is an early prototype - I did not update it as yet 😉
Cheers,
Valery
Thimios, same thing - please see the post #408:
http://www.diyaudio.com/forums/soli...e-old-ideas-1970s-ips-ops-41.html#post4578177
VERTICAL is my symmetric CFA front-end, utilizing the idea of the complimentary differential circuit, mentioned in the very beginning.
Cheers,
Valery
This is a different topology, comparing to the one in the first post, and its two complimentary (vertical) differential circuits form a really Vertical structure.
So VERTICAL is the name of particular front-end section, shown in the post #408.
Isn't that normal in the audio world? Everything gets a confusing name.
Attachments
I think, in the minds of many people, involved in audio engineering, the word "vertical" is very much related to the word "MOSFET" 😀
Not in this case 😉 Nothing to do with MOSFETs 😛
For those, who'd like more structured presentation - see my website, following the link below (in my signature).
Not in this case 😉 Nothing to do with MOSFETs 😛
For those, who'd like more structured presentation - see my website, following the link below (in my signature).
Then it was "in the very beginning" and now it's become "in the post #408"