[UntilThen]

It appears to be an RCA 1635.

https://www.radiomuseum.org/tubes/tube_1635.html

It is RCA 1635 but what is it? It's not a 6sn7 equivalent is it?

 

[gibosi]

It is RCA 1635 but what is it? It's not a 6sn7 equivalent is it?

No, while it is a double triode, it is very different than a 6SN7. It has an amplification factor of 65, close to that of a 6SL7. However, it has two separate control grids connected in parallel, and I suspect it is too strange to use in a typical audio amp. That said, perhaps Ultrasonic Studio might consider building something interesting with it?

 

[senseitedj]

Happy to fully join the Ultrasonic family.

My Telemachus has entered more than 1 month of service and has already caused many sleepless nights..

 

[bcowen]

It is RCA 1635 but what is it? It's not a 6sn7 equivalent is it?

It's a tube for the golf cart audio system, obviously. No more yelling at me when I drive into the lake.

 

[UntilThen]

It's a tube for the golf cart audio system, obviously. No more yelling at me when I drive into the lake.

This is what you will be driving next year.

 

[UntilThen]

Ain't I glad that I found all my good CDs.

 

[UntilThen]

Odyssey powering my speakers instead of Oblivion. Amazing !

 

[baronbeehive]

It's a tube for the golf cart audio system, obviously. No more yelling at me when I drive into the lake.

A tube based sonar obviously for the purposes of finding those missing golf balls .

 

[baronbeehive]

Odyssey made it to 14 months and Oblivion is coming up to 3 years. Using both everyday.

A world record?

 

[UntilThen]

A world record?

A record for me. I have never kept an amp for so long.

 

[bcowen]

A tube based sonar obviously for the purposes of finding those missing golf balls .

LOL! If @UntilThen could keep his balls in the fairway, I wouldn't be the only caddy on the course dressed in scuba gear.

 

[audiargent]

Speaking about sleepless nights, some night shots of the new LinLai tubes.

Been abroad for the entire week, I still have not had the time to fully listen to them - I was told 40 hours of burn in, and still far from that, but I am liking what I hear, especially in terms of detail and balance.

These are not the top of the line. The SL7s are their "basic" offering, the 274Bs, you could call "mid-range".

Still makes my HE-6SEs sing! Never saw a blue glow on driver tubes!

 

[senseitedj]

These are not the top of the line. The SL7s are their "basic" offering, the 274Bs, you could call "mid-range".

Still makes my HE-6SEs sing! Never saw a blue glow on driver tubes!

Same here. The tubes I'm rollin right now are not exactly TOTL but having a great time

 

[jonathan c]

LOL! If @UntilThen could keep his balls in the fairway, I wouldn't be the only caddy on the course dressed in tuba gear.

FTFY…[Reg. TM; © bcowen: 2021]

 

[UntilThen]

I'm back to using the Telefunken tubes EL11 and EL12 spez with 5U4G rectifier. In UL mode, driving my speakers or Susvara. Amp is cooler with these tubes but amazing clarity and tone. Has to be one of the best combo in Odyssey. Source is my Pioneer sacd player, playing Eagles Hell Freezes Over JVC xrcd2 album.

See the volume knob is only there driving Susvara. Lots more headroom.