johnwmclean

Here’s a place to start:

Goldpoint V47 is same Elma switch and a lot less money.

I see Ok gotcha, DACT or RK50 only then. The Goldpoint V47 is 47 steps vs DACT 24 steps. I also prefer the wafers with PCBs vs DACTs pinouts (not an issue with your T2 pcb though). Then channel matching on either DACT or Goldpoint would be better than the RK50 as well as a lot less money. The Goldpoint feels incredibly good quality not RK50 quality, but a lot better than the DACT from my experience. I’ve also had Kozmo’s as well and was not a fan, maybe quality has improved but not willing to gamble.

Since KSC5026M is 0 stock worldwide, could I drop in the original part 2SC3840 without issue into the latest HV designs?

It’s really dried up out there, I’ve looked everywhere for KSC5026M for a HV supply, if any one has stock kicking around I need 4 pcs? Happy to trade on something you may need, have quite a few bits and pieces.

50k not 50ohm The Goldpoint V47 is an incredible attenuator, I prefer way more than DACT or RK50.

That is fucking BEAUTIFUL! Congrats Kerry!

https://www.ebay.com.au/itm/255043710488?hash=item3b61ca2e18:g:4mQAAOSwGNtg5G7e

Very nice build, any reason you couldn’t have used one custom transformer?

^ I have protector boards, pm me if interested

Anybody tried the HE6 with a CFA?

C3M0350120D could be a good alternative.

I am master of this.

Something in the water 58 years ago... ?

Happy Birthday Kerry 🎂

jfets in the dynalo are 2sk170/2sj74. I did make this comment...

element14 have MJW21196

The transformer and covers both from from Antek: https://www.antekinc.com/ca-100-steel-cover/ The rear panel has a diyaudio soft start circuit (blue pcb) and also amb audios ε24 power switch driver circuit/small transformer for the momentary switch on the front. Next to the output on the front is Kevins balanced headphone protector.

I do need a planar... but HD800S are amazing with the CFA2. Comparative to the mini dynalo it’s more refined, open, bass has better detail and impact. I’ve not heard the HD800S sound this good, not quite as good as the SR-007 with a Carbon, but could be very content with the small compromises.

A CFA2 balanced. Finished this a whiles back.

breakdown voltage is ~1510v (data sheet spec is 1700v min) but limited by the dy294 1500v between c and e I'm fairly confident they are genuine funnily enough the eBay source I bought from is the same listing starcat referenced with the fake images

Teehee... I was kind of thinking this was completely out of character for James. Meanwhile I bought some C2M1000170Ds from eBay and kind of resigned them to be fakes... They’re looking a bit beat up from being jumbled around, but I think the gamble paid off.

I haven’t. However I did pass this by Kevin and he said the G3R450MT17D part should work, but he has not used it. DigiKey still have good stock, I secured a few pcs for myself just in case.

I had a another look from the datasheets they are both G D S viewed from front left to right.

I think I’m the minority here, maybe I should have some time in the corner. Just don’t get me started on the dot illuminated variety... 🤮 ... to add fuel to the fire and to further rant aimlessly, I’ve rarely seen any commercial audio companies using these switches, I just can’t see the likes of Accuphase or Audio Note banging one of these bad boys on the front of their products. But hey this tots my personal pref, just throwing it out there