Schiit Lyr 3 Tube rolling thread.....
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Wes S

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Motocrossman24

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bcowen

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Do you have any experience with the CBS-Hytron 5692?
I do. Let me see if I can find the right descriptors: it sucks. Killer midrange, sweet treble, a bump (but pleasing bump) in the bass, and no friggin' dynamics. Boring. Uninvolving. Uninteresting. Makes you want to watch TV. What's strange is that this tube was one of my top two favorites in the Vali2. Just doesn't make friends with the Lyr3 for whatever reason...or maybe it's just a synergy issue with my 'phones and/or my ears.
 
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eagerears

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This isn't really Lyr-specific, but I figure people here might know: I bought an old 6SN7/VT-231 made in 1945. It sounds really good in the Lyr, but occasionally, the left channel gets fairly quiet (doesn't cut out entirely) for a few seconds and then comes back. Is this a sign of age? I'm not hearing any buzzing or other noise from it. Anything that can be done about it?

(I'm pretty sure I've narrowed it down to the tube being at fault here, I haven't heard that with the other tubes in the same setup.)
 
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Motocrossman24

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Is this definately a sylvania 6sn7wgt? It was advertised as such, but all markings are worn off besides made in USA and “607” on the base which I’m assuming is a date code? It definately has the sylvania style plates.
 

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bcowen

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This isn't really Lyr-specific, but I figure people here might know: I bought an old 6SN7/VT-231 made in 1945. It sounds really good in the Lyr, but occasionally, the left channel gets fairly quiet (doesn't cut out entirely) for a few seconds and then comes back. Is this a sign of age? I'm not hearing any buzzing or other noise from it. Anything that can be done about it?

(I'm pretty sure I've narrowed it down to the tube being at fault here, I haven't heard that with the other tubes in the same setup.)
"Old" as in having been used for a long time, or old just because of when it was manufactured? Any idea (roughly) how many operating hours it has or how long it's been in use? I've never personally experienced what you're describing, but it sounds like signs of failing emission -- the tube is just worn out. One triode is still going, but the other is gasping its last breath.
 
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JohnBal

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Is this definately a sylvania 6sn7wgt? It was advertised as such, but all markings are worn off besides made in USA and “607” on the base which I’m assuming is a date code? It definately has the sylvania style plates.
I would say it is. The etched markings look real enough and the numbers could be a date code indicating the seventh week of 1956. But I'm no expert...
 
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eagerears

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"Old" as in having been used for a long time, or old just because of when it was manufactured? Any idea (roughly) how many operating hours it has or how long it's been in use? I've never personally experienced what you're describing, but it sounds like signs of failing emission -- the tube is just worn out. One triode is still going, but the other is gasping its last breath.
Old as in "around for a long time" – it's not necessarily NOS, but looks unused and apparently tests very well. But either way, it's probably not the tube that's at fault, I've now heard the same thing happen with a different tube. So I'm wondering of the Lyr has an issue. Testing right now with the LISST, my suspicion is that one of the heaters is cutting out intermittently.
 
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Motocrossman24

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That sylvania wgt that I posted above is my new favorite tube in the lyr3. It has a midrange and treble that just sounds so alive in this amp.
 
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Wildcatsare1

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A brief update the Foton, 1962’s have nice tone, but are a bit forward and don’t extend as deep in the bass as either the Sylvanias, the ‘52, or the ‘48 VT-231, which remain my favorite tubes.
 
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bcowen

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A brief update the Foton, 1962’s have nice tone, but are a bit forward and don’t extend as deep in the bass as either the Sylvanias, the ‘52, or the ‘48 VT-231, which remain my favorite tubes.
Got any pics by chance? Or have you posted some already?
 
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Wildcatsare1

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Got any pics by chance? Or have you posted some already?
I don’t yet, the 52 is a rebranded Sylvania, in Philco garb, I’ll post some latter today.

I’m having surgery Friday morning, so I’ll be out of pocket for a bit, so I may not get the pics until next week.
 
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bcowen

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I don’t yet, the 52 is a rebranded Sylvania, in Philco garb, I’ll post some latter today.

I’m having surgery Friday morning, so I’ll be out of pocket for a bit, so I may not get the pics until next week.
Hope it's nothing serious? I guess any surgery is serious, but you know what I mean.
 
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