LampizatOr Golden Atlantic + TRP

[WildPhydeaux]

Very nice pictures, Boris, and welcome to the forum and this thread! It sounds as though you have spent a lot of time putting your TRP through many combinations and I bet you enjoyed every minute.

Most of the tubes you mentioned are not readily available here in Canada and I assume the US, other than by eBay extortion or overseas order. Either way rather expensive. So it's nice to have someone like yourself provide such positive information so it's not such a gamble to purchase blind (or should I say deaf).

As you may have read recently here many of us are using relatively inexpensive small signal triodes and having fabulous luck. Have you tried any such tubes like the 6J5 and it's many variants?

This picture shows a Wizard type 80 rectifier with a pair of STC 2C26a triodes. The STCs are likely more common in Europe, incidentally.

Cheers,
Robert

 

[Pollux]

Thank you Robert. Exactly, it was very peasant journey. I have Sylvania type 80 rectifier but I haven"t used it in Lampi.I also haven't used any of mentioned small signal triodes.
I have used small inexpensive output pentodes el84 (EI Niš, Tesla, Telefunken), El86 (Telefunken) and Russian 6p14p and 6p15p from various producers. Out of all this only satisfactory results were with 6p15p, but not even close to big output Pentodes.

Cheers Boris

 

[Designsfx]

In my humble opinion, for my system at least, best combination of tubes for Lampi TRP (tried at leat 30 combination) are as follows:

1. U18/20 rectifier (any brand), EL 12 spec Telefunken output

2. U 52 Brimar rectifier, F2a11 Siemens output

3. USAF 596 rectifier, Tesla 4654 (very close to this is Tesla EL51) output

Hello Boris!
Welcome to the forum and the TRP thread. Great pictures! I’m sure you’ve spent a lot of time working with the tubes you’ve mentioned above- all really good stuff!

These combinations are definitely part of the original TRP playbook which I’m leaving a copy of with you. This file lists all comments on TRP used pentodes/rectifiers as they were commented on up until the point at which I purchased my Golden Atlantic. Anything posted after that is in the thread.

I think you’ll be really surprised when you give indirectly heated single or dual triodes a try- they definitely push things in a different direction and are in a way more suited for the way the TRP is designed to run. Many single triodes will run directly but always confirm against the data sheets before purchasing. The dual triodes will need adapters.

There is a small group of us here that are running triodes pretty much exclusively now and if you’d like any suggestions just let us know as we often share our experiences within the thread or via direct messaging. Good to hear from you!

Designsfx

 

[Pollux]

Thank you Designsfx. For sure I will try inderectly heated trioda. DHT tubes are my favorites and complete system revolves around it.
In order to avoid trial and error which is time consuming, please send me you recommendation for small inderectly heated triods. For rectifiers I have here more tnan 50 different options already checked.

KR Boris

 

[Designsfx]

Thank you Designsfx. For sure I will try inderectly heated trioda. DHT tubes are my favorites and complete system revolves around it.
In order to avoid trial and error which is time consuming, please send me you recommendation for small inderectly heated triods. For rectifiers I have here more tnan 50 different options already checked.

KR Boris

I’m not sure if you’re dac is SE or Balanced but if you’d like to creep up on this just to get a taste I would recommend buying a matched set/quad of black metal 6J5’s to start with.
I believe my first quad were 1940’s GE but Tungsol, KenRad and Raytheon are also really good if they’re NOS. Give it a shot!

 

[Pollux]

My DAC is SE, one rectifier and two output tubes.

 

[WildPhydeaux]

And just to add to what Designsfx suggested, the 6J5 will plug directly in to your DAC, there is no adaptor required.

Cheers,
Robert

 

[Pollux]

Excellent Robert, thank you