[JKDJedi]

I noticed yours came with a braided two conductor wire. Mine came with a cheap three conductor gray insulated wire (red, white and black). That I’m replacing with a short section of Mogami 4 conductor cable.

IMO, You might as well remove that hot glue and unsolder all three. Heat it a little with the iron and it will pull right off. It remains an easy reversible operation.

This! ^

 

[SHIMACM]

I noticed yours came with a braided two conductor wire. Mine came with a cheap three conductor gray insulated wire (red, white and black). That I’m replacing with a short section of Mogami 4 conductor cable.

IMO, You might as well remove that hot glue and unsolder all three. Heat it a little with the iron and it will pull right off. It remains an easy reversible operation.

I'll do it this way, disconnecting the three wires.

 

[therremans]

Does anyone know who manufactured the Canadian Marconi brand? Licensed by Radiotron.. is this affiliated with RCA? Regardless, these sound very nice.

Edit: I read that RCA trademarked Radiotron in the 20s and left it in the 80s.

 

[JKDJedi]

Does anyone know who manufactured the Canadian Marconi brand? Licensed by Radiotron.. is this affiliated with RCA? Regardless, these sound very nice.

RCA

 

[therremans]

I replaced the input RCA jacks with rhodium plated ones. New wire is shielded Mogami four conductor ran straight into the alps pot. Output holes will be plugged with silicone caps.

Results: The noise floor dropped even more and the amp now has zero background noise, even at maximum volume. This is probably due to the wire? I didn’t expect to hear any difference.

 

[SHIMACM]

I released the preamp wires. My initial impression was to feel a greater recovery of details in the music. Now it's the courage to make the LED Mod.

 

[therremans]

I released the preamp wires. My initial impression was to feel a greater recovery of details in the music. Now it's the courage to make the LED Mod.

Yes! I initially wanted my amp stock. It all started with the output removal and hearing a difference. I have LEDs I can recommend when you are ready.

 

[SHIMACM]

Yes! I initially wanted my amp stock. It all started with the output removal and hearing a difference. I have LEDs I can recommend when you are ready.

I would like your recommendation for LEDs. . The problem is that I have to see if I can get them in Brazil. .

 

[therremans]

I would like your recommendation for LEDs. . The problem is that I have to see if I can get them in Brazil. .

Mouser #: 630-HLMP-6000
Mfr. #: HLMP-6000

(product link)
(datasheet)

 

[SHIMACM]

[QUOTE = "therremans, post: 15960396, membro: 537425"]
Mouser #: 630-HLMP-6000
Mfr. #: HLMP-6000

( link do produto )
( folha de dados )
[/CITAR]

Bem, obrigado pela indicação. Porém, como moro no Brasil, terei que tentar encontrar o LED bem aqui. Mas vou colocar aqui fotos e especificações para sua aprovação antes de fazer o MOD.

Ontem fiz uma longa sessão de escuta. Estou impressionado como a eliminação da pré-saída melhorou o som do Darkvoice. Já foi dito aqui e posso concordar que levantou o véu de Darkvoice. O palco foi ampliado, tanto em largura quanto em profundidade. A separação dos instrumentos melhorou. O som é mais refinado, com mais detalhes em todos os lugares. Eu apenas senti que o impacto de baixo característico do Darkvoice foi um pouco reduzido.

Muito obrigado a todos pela dica.

Ouvi dizer que este MOD em conjunto com o MOD LED torna o Darkvoice muito próximo do Crack.

Quão verdadeira é esta afirmação e quão perto ela chega? Alguém comparou o Darkvoice MODIFICADO ao Crack?

 

[SHIMACM]

I looked in my city and found these led models. Both are 3v. I couldn't find other models. One is red and the other is blue. Do they serve to make the Mod?

 

[therremans]

I looked in my city and found these led models. Both are 3v. I couldn't find other models. One is red and the other is blue. Do they serve to make the Mod?

Do you know the forward voltage? I read that makes all the difference.

The first time I attempted this mod, I used “bright orange” LEDs from a local store. They right away didn’t sound good, increased gain too much and the whole sound was “hot”. I’ve read that you want a dim red LED. However I heard UV voltage works too. Google the various people attempting other forward voltages and colors.

I went with mine because someone else tried many and understood the data sheets well enough to know that little diffused red led is an ideal choice.

 

[SHIMACM]

Do you know the forward voltage? I read that makes all the difference.

The first time I attempted this mod, I used “bright orange” LEDs from a local store. They right away didn’t sound good, increased gain too much and the whole sound was “hot”. I’ve read that you want a dim red LED. However I heard UV voltage works too. Google the various people attempting other forward voltages and colors.

I went with mine because someone else tried many and understood the data sheets well enough to know that little diffused red led is an ideal choice.

The direct voltage is 3v. I saw that some people used 5v, 3.4v, but they did not report the result. Is there any other place where people argue about this mod?

 

[therremans]

The direct voltage is 3v. I saw that some people used 5v, 3.4v, but they did not report the result. Is there any other place where people argue about this mod?

You will be replacing the 1k ohm resistors with LEDs. Negative side points away from the 6sn7 tube socket.

https://www.diyaudio.com/forums/tubes-valves/324722-led-tube-biasing-pros-cons.html
https://audiokarma.org/forums/index...the-darkvoice-336se-otl-headphone-amp.923899/
https://drop.com/buy/dark-voice-366se/talk?search=LED
https://www.superbestaudiofriends.org/index.php?threads/darkvoice-and-crack-mods.5621/

 

[JKDJedi]

The direct voltage is 3v. I saw that some people used 5v, 3.4v, but they did not report the result. Is there any other place where people argue about this mod?

I used 2v version with no problems https://www.digikey.com/en/products/detail/lite-on-inc/LTL-4221N/214530
You could try out what you have , it's good soldering practice, and always reversible if it doesn't work out, just don't throw away the stock resistors .