bbest
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Posts posted by bbest
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9 hours ago, JoaMat said:
If it’s ksc5026 in KGSShv style power supply you can probably use stn0216 intstead. Solder it standing on the to126 pads (might be to220 pads on your board?). Power dissipation there is something like 40 – 60 mW, I think.
you mean this one
https://www.mouser.com/ProductDetail/STMicroelectronics/STN0214?qs=pmcUWs1B1IKOCzUPe9wAgg%3D%3D
stn0214? So tiny
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20 hours ago, Craig Sawyers said:
It's an ONSemi part. I really don't know what has happened with ONsemi. They bought Fairchild and Sanyo, and have obsoleted most of the really useful audio parts. Anything remaining has ended up on ridiculous lead times.
We're well beyond the Covid excuse, and I'm left with bungling corporate incompetence as the only explanation remaining
so may be find some analog for KSC5026MOS, on Aliexpress some shops try to sell 1pcs for 24$ 🤔
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On 8/20/2022 at 8:02 PM, sbelyo said:
I need at least 4 but could use 12 of KSC5026MOS for GRHV. Does anyone hve 4 that they could spare? Or a trusted source?
I also needs KSC5026MOS, for T2. On mouser it will be available in summer of next year. How know where to buy it ...
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Hello!
I could get now DynaMight 4pcs boards version 2004. Does anybody know is there any difference for balance amplifier between: DynaMight and Susy Dynahi v 1.43?
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2 hours ago, RonH10 said:
So bbest, what type of tvc are you enjoying?
There are custom TVCs from some Russian DIY master. Those one are balanced.
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I tried to buy 2SK216 here:
wehavethatitem
https://www.ebay.com/itm/283871974560
also fake, seller agree on refund
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Does anyone knows where to buy 2SK216 8 pcs?
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19 hours ago, Helium said:
Hi starcat. What are P/N of the connectors and housings and pins you are using?
I'm tempted to try these. As far as my quick search revealed, pins and wire entry seals don't come in bundle and are sold separately, aren't they?
My concerns is that CPC series seems to be rated for 250VDC/VAC only, and that there is no space between the thread and the gasket, which means that the gasket itself will be outside the panel/case. Any considerations?
I used 3 different connectors, different for AC and DC. Something like this:
https://www.aliexpress.com/item/4000011885330.html?spm=a2g0s.9042311.0.0.27424c4dG8z02S
https://www.aliexpress.com/item/32814240840.html?spm=a2g0s.9042311.0.0.27424c4dG8z02S
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http://www.cardas.com/chassis_wire.php
Quoteultra pure copper, Golden Ratio
Good choice who likes musical, audiophile sound.
In my TVC (volume control) I used replica of Nordost Valhalla 7N
Balanced, transparent, not colorized sound. Good choice for internal wiring.
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1 hour ago, kevin gilmore said:
newdocuments - downloaded ok now
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On 10/24/2021 at 9:13 AM, jamesmking said:
is the mill spec cable silver or silver plated?
personally I have always found cables which are silver or silver plated to be bright, shouty and lack ambience. I only use un-plated copper cables. I use Cardas chassis wire for my builds and use Cardas golden reference for speaker, power and some inter-connects. Van den hull first is not bad but I think it lacks a bit of bass - its cheaper second hand than the Cardas. I even find silver plated/solid silver fuses to be bright.
For my HiFiMan HE-6 were made custom cable with pure silver + UPOCC copper, proportion 1/3. And it sounds balanced and transparent at same time.
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On 10/23/2021 at 9:01 PM, kevin gilmore said:
here are the current google share links
https://drive.google.com/drive/folders/1r3g2TAtBUaBdiMorTWX7yYgeJ7maQbYW?usp=sharing
someone please verify that both links are viewable.
1. boards - ok
2. documents - has 311 errors:
QuoteYou are prohibited from downloading this document.
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I am in process of collecting parts for T2. All available except those one:
KSC5026MOS
IXCP10M90SAnd time of delivery always move right. For example for IXCP10M90S it was around 04/2022 but now in both shops mouser, digikey phrases like this:
QuoteOn Order: 1,843 Expected 8/9/2022
It took some time 😪
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On 6/29/2021 at 4:50 PM, starcat said:
Hey John,
I have the HE-6 but not yet 🙂 the CFA (it is on my build list however).
I am ising the HE-6 with RSA The Dark Star atm and it is just magnificent. Compared it to the HD-800 as well but clearly prefer the HE-6 and traded the HD-800.
I am using modified HE-6 with balanced beta22. Sounds also great.
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Good approach 👍 I also trying to buy a litte more, but not too much. From my practise all projects completely unique. So parts are not shareable. I built several general amplifiers, balanced beta22, some DACs and so on. As for repairing: mine projects are very cool and I am trying to build them very reliable, so don't need to repair them. If realy something will broke, I will better build new more modern and more performance gardget. This is from my practise of 8 years in DIY. So in conclusion: if extra parts doesn't costs too much - then buy them, otherwise exact count or +1.
But anyway: it is usefull to buy 10m90s and fill excel with extra inventory - good idea.
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Yes, you are right. But without IXCP10M90S all work is useless. May be it make sence to buy maximim parts now and then the rest of another. Because when IXCP10M90S will be available, could be absent another items. The question that it could be loose some money on extra shippings.
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Tried to estimate possibility to collect BOMs for T2 on mouser. First struggle was with MOQ=100 of resitors 273 Xicon MF-RC. Second step is long lead time. Some examples:
595-LF353P
512-KSA1156YS
747-IXCP10M90S
512-FQPF8N80C
512-2N3904BU
655-RT424012
512-BC547BTA
512-KSC5026MOS
512-FQPF8N80C
512-2N3904BU
863-1N4007RLGBaddest times for DIY arrived 😅
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5 hours ago, sbelyo said:
That's cool! I'd like to see those as I want to use for two other projects where space is at a premium
PM me if needed gerbers or boards itself.
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5 minutes ago, sbelyo said:
yeah, that's what I ended up going with. Salas's stuff is great!
+1 agree with you. I like his boards. I redesigned L-Adapter and UltraBib 1.3, made them more compact. Both has great specs.
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On 7/4/2018 at 4:12 AM, sbelyo said:
So I was thinking of building a linear psu for a new PC.
I came across this kit on ebay
Anyone ever use something like this kit? The Teradak products are really cool but pricey
I used this one: https://www.diyaudio.com/forums/power-supplies/336685-adapter.html
My project:
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Not so far ago built HTPC. 5 independent lines on Salas L-Adapter
https://www.diyaudio.com/forums/power-supplies/336685-adapter.html
MB: +3.3v
MB: +5v
MB: + 12v
SSD: +5v
CPU: +12v
JCat Femto PCI-E USB card, deeply customized Linux for low latency (without RT kernel).
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On 9/12/2021 at 4:31 PM, Beefy said:
Finished up a Soekris dam1021 build. This is the new rev7 board with a lot of improvements trickling down from the flagship dac2541. HiFi2000 case, FPE panels, JLSounds I2SoverUSB v.III input, LT3045-based power supplies, direct R-2R output intended for my headphone amp, and buffered output for my powered desk speakers.
My aesthetic stylings and DIY skills haven't advanced even the tiniest bit since 2010, but I like the brutal elegance and minimalist functionality. Most importantly, it sounds really nice.
As I heard Soekris good DAC but not perfect.
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I am wandering when people here assambled T2 and use it with Alps RK50 potentiometer from past age. Some years ago I inverstigated question about volume controls. Looked even on Bridged-T attenuator:
https://www.electronics-tutorials.ws/attenuators/bridged-t-attenuator.html
And as a conclusion: best attenuators are transformer TVCs. Until some music level resistors (even z-foil) is the best. But for Ultra HiEnd is TVC.
In attachments is mine. FR @1kHz=0db almost flat up to 1MGHz. It is better then Stevens and Billington TX-102 TVC, Music First Audio - Passive Magnetic Preamplifier and so on. Even this not the toppest one, but it is very very pleasent for hears.
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It is possible to buy C2M1000170D on aliexpress, but for testing fake parts could be usefull "p-n junction breakdown voltage meter ". I wanted to build one of Russian variant:
The ultimate DIY? A Stax SRM-T2!
in Do It Yourself
Posted
I have 4 sets of T2 boards of morden jamesmking's design. If smb wanted just pm me.