aha! exactly was my question in the original post - so will look out for these upgrades, thanks! where did you source the tube from?
Le Classe A - DIY Jean Hiraga Super 30W Class A Amplifier
- Thread starter all4music
- Start date
saikatbiswas82
Well-Known Member
I think I haven't made myself clear. My apologies.
I did not have any issues with the stock chinese tubes or the wall wart PSU. I'm guessing the issue lies with your preamp itself. I may be wrong.
I've bought those GE tubes from eBay USA. My brother hand carried them during last December. Those tubes were available in Amazon India as well.
BTW....I'm using this tube pre (with Bluetooth DAC) -
NP Saikat and thanks for the details
for now, I've got my passive pre-amp working - just a powered ALPS pot with source selection board. will see what I can do with this tube pre little later.
soundnovice
Active Member
from where u got alps pot?
from thediocrafts.com [Aminder]
It's been quite some time i updated this thread. blame it on the whatsapp group .. kidding.
In the past few months, I've built an Aikido 12Vac tube pre and added a 3KVA Servo Stabilizer for power supply.
Hiraga + Alpair 10.3 M playing:
Servo Stabilizer innards:
Aikido build is still kinda WIP - I hear a lot of hissing noise and need to get a nice chassis too.
Aikido board:
Board dropped in Pre chassis:
Tube Glow:
Stabilizer:
In the past few months, I've built an Aikido 12Vac tube pre and added a 3KVA Servo Stabilizer for power supply.
Hiraga + Alpair 10.3 M playing:
Servo Stabilizer innards:
Aikido build is still kinda WIP - I hear a lot of hissing noise and need to get a nice chassis too.
Aikido board:
Board dropped in Pre chassis:
Tube Glow:
Stabilizer:
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For Akido build you can easily ,make it dead silent by using star topology ground.If that wont work after trying the last option is rod Eliot ground loop breaker.But a proper star ground will solve this issue All ground should be in star you can select appropriate position in your cabinet.
Hi @hifiramr
Sure, grounding is something I'm yet to experiment with. For now I've followed whatever was updated as part of a pdf guide. It took me a while to get it working as I had to toy with various resistors values.
jayakrishnan k
Member
o/p of aikido is fed to k buffer or reverse?
Hi Jayakrishnan, K buffer is not part of the chain anymore. It's DAC to Aikido to amps. And right now I've bypassed even the Aikido as i didn't have patience to troubleshoot the noise issue. Probably will pick it back up as part of lockdown updates.
Cross-posting from a different thread:
Volumio player has temporarily replaced my laptop as source. Managed to add volume control and track next/prev rotary encoders. But still some issues need to be sorted:
https://www.hifivision.com/threads/picoreplayer-jivelite-with-rpi-7inch-touchscreen.80644/page-2
Volumio player has temporarily replaced my laptop as source. Managed to add volume control and track next/prev rotary encoders. But still some issues need to be sorted:
https://www.hifivision.com/threads/picoreplayer-jivelite-with-rpi-7inch-touchscreen.80644/page-2
I will also be upgrading my Jean Hiraga soon. I have got new PCBs from Jims Audio with the Kubota regulator. A beer can size caps from Sharda ( 8 Nos) the one like you have used, a massive heat sinks weighting about 10 KG each, an R-Core transformer 18-0-18 / 22 Amp weighting about 10.2 Kg
I have assembled the PS and it also weight about 12 Kgs. This one is going to be the Monster. A small teaser.
Thats 1 Ltr Bottle in below photo to get an idea about its size. The R Core will be fitted below the Capacitor Bank.
Check the Size thats tata sky remote for comparison.
Wow!! Perfect!
Go Big or Go Home!! That thing is gonna be a Huge Monster!
Though I don't have any complaints with my build as of now but given a chance, will add extra large radiators/ R Core Transformers and Kubota Regulator based board -albeit will continue with Mono block configuration.
Go Big or Go Home!! That thing is gonna be a Huge Monster!
Though I don't have any complaints with my build as of now but given a chance, will add extra large radiators/ R Core Transformers and Kubota Regulator based board -albeit will continue with Mono block configuration.
HUUUUUUUUUUUUUUUGEEEEEEEEEE
Bhai what are you up too?
Except for the DAC in my chain, rest everything is DIY/Assembled by me. Probably will try Soekris sometime in the future. But for now here is a short video of my media player build log:
Rotary encoders make it so much handy to operate this set-up. Volume control and Media control are simple to operate by anybody at home. But I couldn't get the 'push' functionality to mute/pause to work on these. But still happy with what it is doing for now
Rotary encoders make it so much handy to operate this set-up. Volume control and Media control are simple to operate by anybody at home. But I couldn't get the 'push' functionality to mute/pause to work on these. But still happy with what it is doing for now
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