Sorry Erlend - you will have to wait until february 🙁
I have some other stuff I'll need to pay first and then there were Xmas/New Year and travel... Me and my purse have to recover from the chock before I order anything new. I will sonically try to hear the difference against other elcaps I have.
Regards
Hi Stajo, if you want to PM on what is confusing, please do so.
It's all pretty strait in my head, but that doesn't help anyone else it's discussed poorly.
I forgot to mention.
I bought a nice stash of Fairchild Stealth 2 diodes the ones that are pictured that I can provide with board for 6.00 for set of 8.
I bought a nice stash of Fairchild Stealth 2 diodes the ones that are pictured that I can provide with board for 6.00 for set of 8.
It was I that didnt read properly
"Minikits will be made available as well and will contain limited parts - resistors and transistors for the Shunt supply portion and the RIAA caps VISHAY MKP 1837."
I was trying to figure out what components was included and which was not. Its starting to be clearer now thanks.
Stajo - I plan on transitioning my BIB minikit blog into an elaborate Minikit / kit discussion for the various boards I have.
That will make it easier to spell it out without blowing the first post into the weeds.
That will make it easier to spell it out without blowing the first post into the weeds.
Turbon,
PM what your looking for and when, and I can invoice it for you.
These parts will all be available during second round GB too. 🙂
Would it be possible to move the holes near the heathsinks more to the center of the boards? Just so they are in line with the screews of the to220's. This would broaden the choice of heathsinks.
Regards
Regards
No, it would change some well done things about sense and force lines loop area, will start radiating the Vref more, it will end up bit bigger also.
Test
Well a few words from Jan Nielsen comparison with Accuphase C 27.
My English is not good enough to a total refer off his test. There is no hugh diffference in tonal quality between them. The diy Riaa is very very good. Hum is almost not existing and noise is very low but C 27 a bit better. Diy is laid back and a little less dynamic than the 12000 dollar exspensive Accuphase. No details or informations is missing compared with the C 27 .
Well a few words from Jan Nielsen comparison with Accuphase C 27.
My English is not good enough to a total refer off his test. There is no hugh diffference in tonal quality between them. The diy Riaa is very very good. Hum is almost not existing and noise is very low but C 27 a bit better. Diy is laid back and a little less dynamic than the 12000 dollar exspensive Accuphase. No details or informations is missing compared with the C 27 .
Thanks for the feedback. 🙂
Excellent general comments. Your diy build's value shot through the roof. If you gave him one to his taste with purpose livelier resistors and capacitors, smaller R2,3 for not 60dB but 63dB gain to play the cart bit more dynamically, who knows, he maybe would have declared them closer in impact and talked only smaller details. But they are so different circuits that they should never be much the same anyway. What was the cart he used BTW? Here is your build again copied from the main thread for the people's reference.
Attachments
I think the Folded must be built around at least the cartridge one is using if not the whole system. So who knows how this will play in your system long term.
Folded may need a little tweaking for someone's taste.
In my system, there is no hum, no noise at any human listening levels, and not laid back at all. Dynamics - well the medium comes into play a bit here too. But more dynamic IMO than something with iron in front of it for gain.
Folded may need a little tweaking for someone's taste.
In my system, there is no hum, no noise at any human listening levels, and not laid back at all. Dynamics - well the medium comes into play a bit here too. But more dynamic IMO than something with iron in front of it for gain.
"No details or informations is missing compared with the C 27". Certainly a great subjective result for that most crucial aspect. Remember when no information is missing, that is the key, we are there to tailor that sonic info to taste and at leisure. That comparison was surely deprived of the cornerstone DIY benefit for custom tuning to a specific system so it still has more to offer to the individual builder. Its an 8 pairs per channel low noise BJT symmetrical input stage full NFB and DC servo throughout circuit the C-27 he listened to in comparison. Ours is low parts count JFET SE no NFB.
JFETs ultimately have to be bit more flow than contrast anyway. Its their highlight to use correctly, more tubey. Despite those things, "A little less dynamic" is down to some simple parts tweak to enhance. The gain setting, for a certain cart to match, can also change that. The C-27 has many instant gain and load settings benefit...And then a guy comes and says no, its the tubes and JFETs know better that vinyl is naturally a bit laid back and smooth, give me more of that. Taste.
That was a 60dB build by using randomly higher R2,3 (more noise less gain) that Erlend did not even listen to before he handed it to the professional reviewer, not even run in. His many PSU caps are 40yrs old, has RC cells, common primary single Tx, the output caps are Soviet MKTs. Has its traits as any other mix. I think pitching it rough and ready against the Accuphase C-27 world class reference resident in some veteran reviewer's system (TT tuned around the C-27 of course) and the reviewer saying what he said, fairly guarantees two things: 1. Works straight away very well in any parts combination. 2. Its worth making.
Certainly we must recognize that Erlend built it well enough as it proved it could stand such a test very decently by using good intuition only, which is no mean feat, and we must also recognize him having the almost gambling level confidence to hand it out for an independent comparison without any C2,2Y measurement or other prior test than biasing it up, no confirmed hint of its sonic character to his ears, forget about not knowing if fully working correctly at all in the first place.
Well I know Jan likes treble 🙂 and it could been a good idea to add those extra 51 pf polystyren. The Kiwame series resistors in the supply to blame for the little noise comparing with C 27 . The little laid back because off the Black Gate ? Jan vil not use it in the future so I think much others will appreciate the laid back stile .
Jan used Rondo Bronze, Sumiko Palo Santos and at last two Ortofon Mc 2000 Mk I on two arms direct comparing into two inputs off his Pre and using headphones.
Friday we will try in our Hifi Club in Copenhagen. If I should modify i would take thoose Black Gate and Kiwame out but I was thinking the Clubs setup when I added them and therefore it will maybee show up as Nirvana.
Salas what kind off electrolytics do you prefer ?
We really have a fantastic setup in the club.