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Conrad-Johnson It just sounds right

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  #11  
Old 03-02-2016, 12:13 AM
joe_marsh joe_marsh is offline
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Originally Posted by plurn View Post
Hi Joe,

One other thing, the E288CC does not seem to be an equivalent of 6922. It has different electrical characteristics, with the E288CC drawing about 50% more heater current, and drawing double the anode current. It might be fine, or it might damage your preamp if it draws more current than it can handle. I recommend checking with conrad johnson to determine if it is safe to use in the ET3 SE.

example 6922/E88CC:

heater current (If): 300mA
anode current (Ia): 15mA

http://www.mif.pg.gda.pl/homepages/f...09/e/E88CC.pdf


example E288CC:
heater current (If): 475mA
anode current (Ia): 30mA

http://www.mif.pg.gda.pl/homepages/f...0/e/E288CC.pdf

Anthony
Anthony

Again, another good point. I just listed my 6922 related stash. The E288cc's may not be right for this application - I'm aware that they draw a different current. Words to the wise.
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  #12  
Old 03-02-2016, 05:51 PM
joe_marsh joe_marsh is offline
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Anthony

I spoke to Jeff at Conrad Johnson and he stated that a load did NOT need to be conducted for burn in. He suggested that running music through the preamp set at 60 in gain would be sufficient.
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  #13  
Old 03-03-2016, 09:19 AM
plurn plurn is offline
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Hi Joe,

That is good to know. Thanks for finding that out. I am sorry for providing incorrect information regarding that earlier.

Anthony

Last edited by plurn; 03-03-2016 at 09:25 AM.
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  #14  
Old 03-03-2016, 12:12 PM
bgiliberti bgiliberti is offline
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Default teflon burn in

Quote:
Originally Posted by plurn View Post
Hi Joe, That is good to know. Thanks for finding that out. I am sorry for providing incorrect information regarding that earlier.
Anthony
I think there's more voodoo than science behind all of this, but I burned in my Classic SE with a load at all times, on the theory of "it can't hurt." Not that I doubt in the least what the CJ rep said, but I'm personally not comfortable running amplification equipment designed to run with a load without a load. Call me superstitious. I also believe the break-in source should be music rather than pink/white/other noise, because the former is what you'll be listening to. Again, superstition everywhere (as the song goes).

Last edited by bgiliberti; 03-03-2016 at 12:36 PM.
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  #15  
Old 03-03-2016, 06:45 PM
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turntable turntable is offline
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On my GAT, I have have had great success with the Telefunken E88CC / 6922.

upscaleaudio.com/6922-6dj8-7308-pcc88/telefunken-e88cc-6922/ Vacuum Tubes :: Preamp Tubes :: 6922 / 6DJ8 / 7308 / PCC88 :: Telefunken E88CC / 6922

Last edited by jdandy; 11-06-2016 at 12:09 AM. Reason: active link to non-sponsor seller against forum rules
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  #16  
Old 03-05-2016, 10:05 PM
joe_marsh joe_marsh is offline
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Quote:
Originally Posted by bgiliberti View Post
I think there's more voodoo than science behind all of this, but I burned in my Classic SE with a load at all times, on the theory of "it can't hurt." Not that I doubt in the least what the CJ rep said, but I'm personally not comfortable running amplification equipment designed to run with a load without a load. Call me superstitious. I also believe the break-in source should be music rather than pink/white/other noise, because the former is what you'll be listening to. Again, superstition everywhere (as the song goes).
I did as well. Just supplying information...
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  #17  
Old 03-05-2016, 10:06 PM
joe_marsh joe_marsh is offline
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Quote:
Originally Posted by turntable View Post
On my GAT, I have have had great success with the Telefunken E88CC / 6922.

upscaleaudio.com/6922-6dj8-7308-pcc88/telefunken-e88cc-6922/ Vacuum Tubes :: Preamp Tubes :: 6922 / 6DJ8 / 7308 / PCC88 :: Telefunken E88CC / 6922
Will have to pick one up!

Last edited by jdandy; 11-06-2016 at 12:10 AM. Reason: remove active link from quote
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  #18  
Old 03-08-2016, 04:10 PM
medwardo medwardo is offline
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I really liked the EAT E88CC in the ET3SE...made it just a bit more mellow to my ears. The tube was pretty microphonic, however, and I ultimately went back to the CJ sourced 6922.
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  #19  
Old 03-24-2016, 08:55 PM
Forte 4A Forte 4A is offline
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I haven't changed tubes yet but the ET3 SE has really changed!! More detail, wider soundstage. The Teflon caps are breaking in. The performance gets better every day.
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  #20  
Old 03-28-2016, 06:48 AM
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GreginNH1 GreginNH1 is offline
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Enjoy the process!
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