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Hi! What is the secondary voltage of the transformer? 2x15VAC or 2x18VAC ?

Where do you get bobbins and laminate core from?

Encontré un texto del manual 26 de RCA de tubes en la página 90 que contiene algo interesante con acoplamiento en etapaa de salida cito "Dispositivos de acoplamiento de salida Se utiliza un dispositivo de acoplamiento de salida en el circuito de placa de un tubo de salida de potencia para mantener la corriente de placa comparativamente alta proveniente del devanado de un altavoz electromagnético y, también, para transferir potencia de manera eficiente desde la etapa de salida a un altavoz de tipo electromagnético o dinámico. Los dispositivos de acoplamiento de salida son de dos tipos: (1) condensador de estrangulación y (2) transformador. El tipo condensador de estrangulación incluye un estrangulador de núcleo de hierro que tiene una inductancia de no menos de 10 henries que se coloca en serie con la placa y la fuente de alimentación B. El estrangulador ofrece una resistencia muy baja al componente de corriente de placa de la tensión de señal, pero se opone al flujo del componente fluctuante. Un condensador de derivación de 2 a 6 microfaradios proporciona una ruta al devanado del altavoz para la tensión de señal. Sin embargo, el dispositivo de acoplamiento de salida de bobina de estrangulación ahora solo tiene interés histórico. El tipo de transformador se construye con dos devanados separados, uno primario y otro secundario enrollados sobre un núcleo de hierro. Esta construcción permite diseñar cada devanado para cumplir con los requisitos de su posición en el circuito"

why do youtubers wear gloves these days

What is that noise?

Heard all these recapping will 100% change the character of the au 101 which in the 1st place unintended ..

It's a beautiful good sounding Amp ❤

Please! Buy a pot nut runner !

Нихуя не понятно, чо он делает

how about to spdif input to pwm for class d? need to downsample for lower the frequency for the mosfets. Oke can I order a pcb from you for build and test? I like it.

You dont know what you are doing with that piece of shit. Stop before you kill yourself and let someone who knows what they are doing work on it. Your as bad as the chinese who dont know how to build tube amps either.

You do realize your wasting a 100 k thats effectively non existant because your shorting it out. maybee you can get a fake car using this idea.The fact your using a 160 henry inductor tells me it takes up as much room as an interstage. a Luhndal interstage isnt much bigger than a cap.

What about picoreplayer ?

Your winding technique is quite impressive that the eindings rarely overlap.

Raspberry PI already has HDMI output for audio.

i have a dead amp i'd like to use as the chasis and power supply for the Amp Camp kit... how to I get the ACA, which is meant to take a 5A meanwell supply feed, to interface with the toroidal?

That is a “directional” RCA cable, which is the proper construction. It will be less prone to noise and also have better sonics. Glad to see someone doing it right

Nice video bro..can you help me..i need to know the data for 40%ultap 8kohms OPT for my on going tube amplifier..i build one opt but the sounds distorted..i need to know what is the internal connection of the winding..thanks a lot

Great Job ! Can you give me an idea were the phase (hot wire) at the main connestion terminal is? Left or right side. Unfortunately both uses wires inside are blue and not black and blue. Thanks!

Hi. My trusty Pathos Logos amplifier, having served me faithfully for nearly 20 years old, bit the dust recently. I turned it off and pulled out the original still-working tubes to replace them with new ones I got off eBay. When I turned back on there was no sound whatsoever! I put back the old tubes, even tried a third pair, and even ordered a 4th pair and still no luck. No sound at all. I'm also not seeing any glow from the tubes When I turn up the volume, I can hear the left speaker tic with each volume increment, (but not the right speaker), and otherwise no sound. Any ideas what might have caused this problem and what the fix might be? Any help is appreciated. Thanks!

VPG (Vishay precision group) make 0.001% resistors (HZ and H lines) they have leads and therefore can be soldered without heating the resisitor itself with hot air - however they are impossible to find for sale anywhere. this could make an absolutely precise 16bit r2r

Wow…?! 🤷‍♂️

Beautiful job. Thanks for the great vid 🔊😊🎶

❤Weltklasse❤

So you've taken a balanced cable an unbalanced it? Why not just use an unbalanced cable instead?

I bought a pair of these Akai "tunnel reflex" speakers cheap in 1974 when I was in high school. I had high hopes because they looked so cool but was rather disappointed by the sound. Not much bass to speak of despite the reflex enclosure, highs are muted and midrange has a hooty, cupped hands coloration. Recently I ran into another pair and they sounded much as I remember 45 years earlier. Maybe some EQing might bring some joy but otherwise don't get too excited. I read rumours that the driver was made by Fostex but I kind of doubt it.

Symphonic-mpd turns off usb, thus less noise. Fing leaps in audio quality, can't go back to any other os.

This device is a Chinese replica of a German original - search for IXION Handbetriebene Standbohrmaschine (IXION Handcranked Drillpress). The company existed in Hamburg from 1919 to 2011. These hand drills were produced between 1920 and 1940. After the 2nd World War, the company manufactured heavy electric stand drilling machines for industrial use (deep drilling machines). These hand-operated drill presses were also copied in the Soviet Union and Cheslovakia. Thanks for your video - I didn't know there were Chinese copies until now.

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We recently released the PecanPi+ DAC and Streamer. The DAC features the latest AKM 4499EXEQ R-2R chip.

Am I hearing the magic of Class A single-ended triodes plus full range open baffle speakers?

In the final demonstration here, what software are you using on the Pi? Is it actually 'player' software (e.g. Roon) or is it just functioning as a Bluetooth-enabled audio device?

Your DAC went from being overpriced in my mind to a tremendous bargain during the course of watching your TH-cam videos and the articles on your website. A tremendous amount of love, knowledge and effort goes into the many iterations of development and the creation of these pieces. It was a joy for me to witness your journey. Bravo!

the internal opamps in the ad1865 cip are garbage....you should use the current output and make your own i/v with some opa1612 or 1656 :) and that will bring the soul out of the ad1865 ;)

Sir its maid in Chana have name of company.

Mate, keep producing such good videos, and selling your DIY stuff, that's looks amazing <3

Lajada

what is the transformer type that you used this build

SAD

Hi the primary inductance is high (45H) as expected for an iron core transformer. How is it possible to push any meaningful power thru such high resistance XL=282f esp at higher frequencies?

Sounds terrible! Maybe it’s that speaker causing the crunchy distortion and warble?

I have like same bench drill very good can do many work. .

hi nice video. is it better to use a thicker cable like 8762 Belden

Really nice mate!😁

Yet another voiceless video!

Thanks

Great Video!. Do you know if the power transformer can be connected for 220V operation? Thank you

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Hello, I'm a beginner in electronics, I did some recaps on devices and always got excellent results. I'm going to restore a telefunken hr 240 receiver, it has a tired sound and needs a recap, I'm not sure which capacitors should be audio and which ones don't, mainly, the source needs to be a capacitor for audio?

Country or State are you located?