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| Acknowledgement http://dcaudiodiy.com/phpBB3/viewtopic.php?f=5&t=3113 |
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| Author: | Stuart Polansky [ July 6th, 2026, 1:41 pm ] |
| Post subject: | Re: Acknowledgement |
Agreeing with Grover. I've also had leakage issues with some, eight others have never leaked. Just grab a little epoxy and seal the ends. Problem solved and great sounding caps. Grover had another cap recommendation that has worked well for me: Cornell Dubilier Knowles 942C series. Look for the highest voltage available. https://www.digikey.com/en/products/filter/film-capacitors/62?s=N4IgjCBcoEwAwBYCcVQGMoDMCGAbAzgKYA0IA9lANohwB0YABAK0BiIpdYArM2x7TBi92NWggDswgLqkADgBcoIAKoA7AJbyA8pgCyhbPgCuAJ0IgAvqQC0MVCAyR5JoyXJUQXEFKshrEaAcsPCJSCkhqAGZIgA5vX2sEe0ccAjdw6jA4JG54iwsgA The catch is, they don't sell a 0.33uF. Depending on the circuit, you may be just fine with a 0.22 (LF Rolloff?)or 0.47 (stability?) Or, you could parallel a 0.1uF & 0.22uF. Stuart |
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| Author: | Grover Gardner [ July 6th, 2026, 2:30 pm ] |
| Post subject: | Re: Acknowledgement |
Stuart Polansky wrote: Agreeing with Grover. I've also had leakage issues with some, eight others have never leaked. Just grab a little epoxy and seal the ends. Problem solved and great sounding caps. Grover had another cap recommendation that has worked well for me: Cornell Dubilier Knowles 942C series. Look for the highest voltage available. https://www.digikey.com/en/products/filter/film-capacitors/62?s=N4IgjCBcoEwAwBYCcVQGMoDMCGAbAzgKYA0IA9lANohwB0YABAK0BiIpdYArM2x7TBi92NWggDswgLqkADgBcoIAKoA7AJbyA8pgCyhbPgCuAJ0IgAvqQC0MVCAyR5JoyXJUQXEFKshrEaAcsPCJSCkhqAGZIgA5vX2sEe0ccAjdw6jA4JG54iwsgA The catch is, they don't sell a 0.33uF. Depending on the circuit, you may be just fine with a 0.22 (LF Rolloff?)or 0.47 (stability?) Or, you could parallel a 0.1uF & 0.22uF. Stuart Well, if you're going to try the Cornell-Dubiliers you can go up to 1uF. The only reason I recommended the smaller Miflex is because the 1uF's are just so enormous. They won't fit on the board but you could off-board them to a terminal strip. But they're also pretty expensive. |
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| Author: | Cogito [ July 7th, 2026, 10:51 pm ] |
| Post subject: | Re: Acknowledgement |
I will get to upgrading the caps eventually. Have a couple of higher priorities. As I am running audio thru HQPlayer upsampling, intend to try out room correction with HQPlayer’s convolution engine. Just installed Linlai WB2A3s, I got from China-hifi-audio. They are driving the mid horns from 700Hz to 2400Hz. They do bring life-like quality to vocals. |
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| Author: | Cogito [ July 31st, 2026, 12:02 pm ] |
| Post subject: | Re: Acknowledgement |
Here is a light edit that polished the flow, corrected minor typos, and leaned slightly into audiophile terminology while keeping your exact voice, structure, and tone completely intact: Since I got the Tubes4HiFi VTA SP14 preamp about three months ago, I’ve been having a blast with audio again—it’s been a welcome distraction from life. I've made numerous changes and improvements to the system recently, with a couple of key lessons learned along the way: Holo Spring 3 R2R DAC performs significantly better with a PCM signal at 1.4112 MHz compared to 705.6 kHz. As of now, I actually prefer PCM 1.4112 MHz over DSD1024. I’m finding DSD to be a bit "polite" by comparison—though obviously, I need more long-term listening sessions to really nail down the subtle nuances. HQPlayer elevates the entire system. Using it for upsampling has proven to be perhaps the best bang-for-the-buck upgrade. Going back to standalone Roon (no oversampling) sounds "crude" in comparison. My prior experiences with DSP were disappointing, but I recently tried HQPlayer's convolution engine for room correction, and I am completely sold. I couldn't detect a trace of signal degradation—instead, I notice better texture, details, and soundstage. It's a fantastic tool; definitely worth trying out even if you're running traditional box speakers. |
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| Author: | Grover Gardner [ July 31st, 2026, 7:49 pm ] |
| Post subject: | Re: Acknowledgement |
Thanks for the update! Glad things have come together and you're enjoying your system! |
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| Author: | Cogito [ August 1st, 2026, 12:19 pm ] |
| Post subject: | Re: Acknowledgement |
Thanks Grover. As you can tell, I am obviously excited. My system never sounded this good. |
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