Running the Folded pasive tonight
23pos Seiden w. Takman Carbon + 10k Z-foil
Damn this Riaa sounds good
Doors at 13 O´Clock volume, perfect for a sunday night
23pos Seiden w. Takman Carbon + 10k Z-foil
Damn this Riaa sounds good
Doors at 13 O´Clock volume, perfect for a sunday night
Attachments
Last edited:
Excellent choice of record pellesmil 
Today for sake of experimentation i thought of adding 2 1000uf Rifa PEH169 to the PSU right after the rectifier, forming a CRC filter. 1000uf-1ohm-4700uf
I may be doing more harm than good because these caps connect to the board with wires. Havent done any serious listening session yet, and the PSU looks a bit silly 🙂
Today for sake of experimentation i thought of adding 2 1000uf Rifa PEH169 to the PSU right after the rectifier, forming a CRC filter. 1000uf-1ohm-4700uf
I may be doing more harm than good because these caps connect to the board with wires. Havent done any serious listening session yet, and the PSU looks a bit silly 🙂
Attachments
Sweet
have you settled for 1 ohm?
roughly you would have about 100mv ripple in that setup
Going to about 15 ohms decreases the ripple to aprox. 16mv
Per
have you settled for 1 ohm?
roughly you would have about 100mv ripple in that setup
Going to about 15 ohms decreases the ripple to aprox. 16mv
Per
-Some Norwegian rarities (Doxa)
-DV P-75mkII
-AAPP 2006 edition (Torstein Lorch) for a brief while
-Present RIAA
-DV P-75mkII
-AAPP 2006 edition (Torstein Lorch) for a brief while
-Present RIAA
No i havent really settled to specific values, just using what i already had in hand. Salas if i increase the value of R to 15ohm , how would that affect the reg down the line?
Last edited:
The more Ohm the more of a time cycle the more of a filter. Slower to charge the last capacitor but cleaner. Given the draw is constant there is no dynamic current demand so it should be a positive move.
They look like those https://www.elfa.se/elfa3~eu_en/elfa/init.do?item=60-519-56&toc=20066 but the text doesnt apply. Mayby something bought up by IRC?
I remember I had a few looking like the straight edge cut plastic cylinder in the pictures back in the 90s but can't be sure if they were Vishay or Welwyn. Still, they were low ppm precision for sure.
I think you're right.
Vishay makes PTF65 now. They looks similar to these, but I was not sure.
Opps, looks very similar on that site picture.
I do not want to occupy time and space on our forum....
So, thank you all and I'll use these for sure.
Probably as "PTF" is a strong clue. Take care, and let us know about the custom K-Mult and PSU revisions report of your finalized build soon.
But it does not look the same in their pdf there. Anyway, some premium part nonetheless.
Received my boards and kits a few days, so I'm now starting to gather the remaining items.
Regarding layout, is it better to have the psu board near the transfomer and run a DC umbilical to the phono board box, or have the psu and phono boards closer to each other and run an AC umbilical?
Also, what kind of transformer would be considered the best for this application? I've seen some posts regarding r core transformers, but since it will be at least 2-3 feet away from the phono box, and we have a very nice regulator for the circuit, does it make sense to invest in a "boutique" transformer?
Regarding layout, is it better to have the psu board near the transfomer and run a DC umbilical to the phono board box, or have the psu and phono boards closer to each other and run an AC umbilical?
Also, what kind of transformer would be considered the best for this application? I've seen some posts regarding r core transformers, but since it will be at least 2-3 feet away from the phono box, and we have a very nice regulator for the circuit, does it make sense to invest in a "boutique" transformer?
Second channel ready. Everything Inside an old heavy Denon enclosure.
What I find special is I got all voltages in the ballpark just after power on. I am getting good at this 🙂
Tomorrow will have the pleasure of listening and fine-tuning C2.
After all, the Ft-3 went neatly in the board and do not look awkward at all.
I set the ccs current to 150mA just to be sure I listen to it as per the pdf.
Wonderful stuff.
What I find special is I got all voltages in the ballpark just after power on. I am getting good at this 🙂
Tomorrow will have the pleasure of listening and fine-tuning C2.
After all, the Ft-3 went neatly in the board and do not look awkward at all.
I set the ccs current to 150mA just to be sure I listen to it as per the pdf.
Wonderful stuff.
Salas, I did not hear yet anything better then your Phono.
I'm listening LPs right now after I'm done with the necessary re-biasing due to KM integration. For the rest of our forum, I integrated Keantoken K-Muli (about 2V drop) into Phono box last week.
Amazing!!!
No any and I meant any previously present in high volume hum/noise/buzz or soever. Absolutely quite. Details are came upfront. Very reach sound. Phoele Snow is a life again and singing just in-front of me. I'll show your guys my final report with pictures and "emotions" soon.
I'm listening LPs right now after I'm done with the necessary re-biasing due to KM integration. For the rest of our forum, I integrated Keantoken K-Muli (about 2V drop) into Phono box last week.
Amazing!!!
No any and I meant any previously present in high volume hum/noise/buzz or soever. Absolutely quite. Details are came upfront. Very reach sound. Phoele Snow is a life again and singing just in-front of me. I'll show your guys my final report with pictures and "emotions" soon.