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Has anyone tried these?
The Siemens draws a bit more juice than a typical 6922 variant but I don't think it would cause a problem.
I contacted Cary and they "can't recommend it."
Does anyone have any experience?
Follow Ups:
Cary is right to say not recommend.The differance between the 2 tubes is large, all te current and voltage settings in the amplifier will change and there is a possebility to damage the circuit.
The 7308 (e188cc) is a much better solution because all the parameter are the same except some more current for the heaters.
Edits: 06/28/20
This is the kind of information I was looking for.
I canceled the E288cc order and have a pair of Telefunken Selected 6dj8 tubes from the '60s coming instead.
Thanks for chiming in.
Right solution.
I am just curious - why should you use the e288cc tubes if the manufacturer doesn't recommend them?
A trusted tube source recommended them. He's been selling them for 20 years.
Since the electrical values are slightly different and they have no personal experience with the particular tube, the manufacturer is reluctant to bless them, out of an abundance of caution.
If a 'trusted tube source' is Kevin Deal, he knows his tubes and knows
the Cary SLI-80 perfectly well.
This is what buying off-the-rack stuff buys you. If you built it, one you might not want to try something else. Or it would have run something else in the first place. You'd also know what 'something else' needs. Or you would be able to examine the circuit you built, and understand what the 'something else' offers.
cheers,
Douglas
Friend, I would not hurt thee for the world...but thou art standing where I am about to shoot.
There are only so many hours in the day and most of mine are occupied.
And now we get to hear how you wish to have yer cake and eat it too.
Have to say, it takes very little skill to design and build something that will kick off-the-rack stuff around the block. If you think this is wrong, you have been reading too much audio advertisements. Or perhaps indulging in selling yourself short.
cheers,
Douglas
Friend, I would not hurt thee for the world...but thou art standing where I am about to shoot.
that your smug condescension is world class.
I can't wait to see your self designed and built automobile and cell phone.
By the way, the correct phrase is "eat your cake and have it too," not the other way around, despite rampant improper usage.
'the correct phrase is "eat your cake and have it too,"'
no it's not
https://idioms.thefreedictionary.com/have+your+cake+and+eat+it%2c+too
https://knowyourphrase.com/you-cant-have-your-cake-and-eat-it-too
there's plenty more links to the correct idiom form
be well,
You have no idea what you are talking about. The age of one man accomplishments went out before RJ Mitchell's Spitfire. Kelly Johnson didn't do the Oxcart; he led the team that designed it. There are near exceptions; the Trieste comes to mind...:)
I am not doing cell phones or cars...tube circuits are much simpler.
cheers,
Douglas
Friend, I would not hurt thee for the world...but thou art standing where I am about to shoot.
AAhhhh Douglas, you are an acquired taste but none the less correct.
It sucks to get old. It really sucks to get old and bitter.
Edits: 06/27/20
I have not tried them, but be sure you have enough vertical clearance for them. They're ~1/2 inch taller than your typical 6922/6DJ8.
Also, be aware they tend to be microphonic. Out of curiosity, why the 8223 and not the 7308? 7308 is much more available, cheaper and more than one manufacturer to pick from. AFAIK, Siemens is the only one to make the E288CC/8223.
Plenty of room on the Cary.
I'm currently using the Amperex 7308 and it's great. Every other tube in the amp is Sophia Electric blue glass. They're also great.
The system in general is slightly on the warm/sweet side of neutral. The E288cc was suggested to me as a more transparent alternative to the Amperex. I thought I'd try a "roll" in that sonic direction.
My main concern is that a search of AA found someone claiming that the extra current draw could fry a transformer. I was hoping that someone who tried this tube in the SLI-80 could tell me of their experience.
The Siemens 7308 may be the tube for you. IME, it's more extended on both ends of the frequency range than the Amperex. But it lacks some of the midrange magic the Amperex possesses. That may sound like a bad thing, however these differences result in a more lively, slightly brighter, sharper presentation than the Amperex.
Thanks for the recommendation. I think you're on to something. Right now I'm drowning in mid-range magic.
What are you using in the 6SN7 spot?
Never mind. You already said the Sophia. Im not familiar with the sound of the Sophia.Another idea ... a Sylvania VT231 in the 6SN7 spot. Just spitballing
Edits: 06/25/20 06/25/20
I personally don't like the Sylvania VT-231 with the SLI-80 - too thin, with excellent highs but exaggerated mid-bass.
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